bluelasermodule – Blue Laser Module Blog

Teaching Field Used 405nm Violet Laser Line Generator

When line projection work is processing for teaching fields, the short wavelength of 405nm made device of a violet laser line generator just assures quite nice violet laser light source emission and ultra clear violet reference line projection for a lot of experimental fields. It is made with ultra compact structure and high strength metal housing tube design, and getting constant electric power source supply. Based on the use of an external electric power source and proper installation or integration with desired experimental teaching device or equipment, it enables high precision, high stability and high straightness violet line indication effectively.

Being made with an import 405nm violet laser diode within 50mW to 100mW and high power range up to 150mW to 200mW, this 405nm violet laser line generator has just applied an external AC/DC adapter as its electric power source. It gets no limitation by manual labor force input, but also enables long time lasting violet laser line projection from beam aperture. The basic equipment of a metal heat sink cooling system is configured with a durable anodized aluminum alloy housing tube, thus violet line laser module obtains superior nice thermal emitting, increasing stability violet reference line projection within constant work time of more than 8 to 10 hours per day.

In various working environments, including wide range operating temperature, humidity and other harsh working environments etc, glass coated lens made 405nm violet laser line generator enables high linear quality and highly straight violet reference line projection. It is allowing freely selected fan angles of 10 to 110 degree. After its special use of adjustable focus optic lens design, it gets high density and highly powerful violet laser light source concentration, and converts into increasing brightness and fineness violet line projection in distance.

Applications of violet laser line generator in teaching field:

Physics teaching: In experimental teaching of optics, mechanics and other courses, highly clear violet laser line is used to demonstrate basic optical phenomena such as light propagation, reflection, and refraction, helping students to intuitively understand optical principles. In mechanical experiments such as rigid body rotation and vibration, it is used as a displacement or angle measurement mark to improve the accuracy and visualization of experimental measurements.

Engineering teaching: In the teaching of majors such as mechanical engineering and electrical engineering, violet line laser module is used to demonstrate the principles and applications of technologies such as laser processing and laser measurement. In automated control experiments, it is used as a light source for position sensors to help students understand the working principles of sensors and the design of control systems.

Experimental demonstration: In popular science activities or open laboratories, through simple experimental demonstrations, such as using violet line laser modules to conduct light interference and diffraction experiments, students’ interest in scientific research is stimulated and their observation and thinking abilities are cultivated.

Review of 405nm SM Violet Laser Diode

General introduction:

The 405nm single-mode violet laser diode is a semiconductor device that can emit violet laser light source with a wavelength of 405nm. It is based on the principle of the photoelectric effect of semiconductors. By injecting electric current into a specific semiconductor material, electrons and holes recombine and radiate photons, thereby generating lasers. Its single-mode characteristics ensure that the laser propagates in a specific mode and has unique optical properties.

Performance advantages:

Wavelength: short wavelength of 405nm is in the violet region of visible light and has a shorter wavelength. This makes it perform well in some applications that require high resolution, such as in Blu-ray disc reading, where a short wavelength can achieve a smaller spot size, thereby improving data storage density and reading accuracy.

High energy density: Due to the short wavelength, the photon energy of 405nm violet light is relatively high. This gives the 405nm single-mode laser diode an advantage in some applications that require high energy density, such as laser engraving, micromachining, etc., where materials can be processed and handled more efficiently.

Good monochromaticity: The characteristics of single-mode laser diodes make the violet lasers they emit have excellent monochromaticity, and the wavelength width is usually very narrow, generally within a few nanometers. This means that the violet laser light it emits has high color purity, and in applications that require specific wavelengths of light, such as fluorescence excitation, optical detection etc. It can provide accurate and stable violet laser light sources and reduce interference from other wavelengths of light.

High directivity: The beam emitted by the 405nm SM laser diode is highly directional, with a small divergence angle, usually within a few milliradians. This good directivity enables the violet laser beam to maintain high intensity and focus during long-distance transmission, which is conducive to improving the transmission efficiency of optical signals and the accuracy in various applications, such as laser indication, optical communication, etc.

Low threshold current: This type of 405nm SM violet laser diode usually has a lower threshold current, that is, laser emission can be achieved at a lower driving current. This not only reduces power consumption and improves energy efficiency, but also helps to extend the service life of the device and reduce operating costs. It is of great significance in some equipment and systems with strict requirements on power consumption.

Good stability: 405nm single mode laser diode has good power stability and wavelength stability. Within a certain range of working conditions, it can keep the output power and wavelength relatively constant, and is less affected by environmental factors (such as temperature, current fluctuations, etc.). This allows it to work reliably in a variety of complex working environments and is suitable for application scenarios that require high light source stability, such as scientific research, medical equipment, etc.

What is The General Use of 445nm Blue Parallel Line Laser Module?

In those of special working occasion of high precision parallel line alignment work in those of industrial and high tech work fields, it would be a quite efficient job to operate a 445nm blue parallel line laser module. It gets featured high precision optical components, including high quality 445nm blue laser diode, collimating lens and other optical componets. The laser diode generates a 445nm blue laser, and the collimating lens converts the divergent blue laser beam into a parallel beam so as to ensure the parallelism and stability of the light. These optical components are precisely processed and assembled to ensure that the module can output high-quality parallel light.

The overall structure of 445nm parallel line laser module is relatively compact and small in size, which is easy to integrate into various devices. Even though it applies an import 445nm blue laser diode within 50mW to 100mW output power, however, it still adopts reasonable internal layout, and the connection between each component is tight. It can achieve efficient optical functions in a limited space and meet the requirements of miniaturization of equipment in different application scenarios.

Based on the use of an inner metal heat sink cooling system inside a durable anodized aluminum alloy housing tube, the genuine use of a 445nm blue parallel line laser module gets good dissipation performance. Even though laser diode generates heat during continuous work, in order to ensure its performance and life, it has just achieved superior nice thermal emitting and ultra stable red reference line projection within long lasting measuring works. The heat dissipation structure can effectively dissipate the heat, maintain the normal operating temperature of the module, and ensure its stability and reliability.

After easy use of an AC/DC adapter, this ultra compact structure designed 445nm blue parallel line laser module is convenient for connection with external power supply and control system. It enables quite easy installation and debug, and can be quickly integrated into different equipment and system, improving its versatility and interchangeability.

Applications:

Laser display: as one of the three primary colors, 445nm blue laser light can be combined with red and green light so as to achieve high resolution, high color saturation color display. It is widely used in display devices such as laser TVs and projectors, and can provide a wider color gamut and clearer images.

Optical communication: In some high-speed optical communication systems, 445nm blue parallel line laser can be used as a light source for short-distance optical signal transmission. Its parallel line blue laser light are conducive to the efficient transmission of optical signals in media such as optical fibers, reducing signal attenuation and distortion.

Scientific research field: In scientific research fields, such as spectral analysis, quantum physics experiments, and photocatalysis, 445nm blue parallel line can be used as an excitation light source or a detection light source to excite the fluorescence of specific substances and study the interaction between light and matter. For example, in photocatalytic experiments, light of this 445nm wavelength can excite certain catalysts and promote chemical reactions.

Industrial inspection: Using its parallel light characteristics, high-precision dimensional measurement, surface flatness detection of objects, laser collimation and other industrial inspection tasks can be performed. For example, in automobile manufacturing, blue parallel line is used to detect the dimensional accuracy and surface flatness of body parts.

Medical field: In some medical equipment, such as a substitute for UV curing lamps, it is used to cure dental materials, phototherapy in dermatology, etc. 445nm blue parallel line laser light has a specific effect on certain photosensitive materials, which can achieve rapid curing of materials, and has better safety and controllability than traditional UV light sources.

Advantages:

High brightness and high energy density: The 445nm blue parallel line laser module can produce high-brightness blue laser light with high energy density. This makes it perform well in some applications that require high-energy light, such as laser processing, optical communication and other fields, and can achieve more efficient energy transmission and faster processing.

Good monochromaticity: The light emitted by this blue laser module has good monochromaticity and high wavelength stability. In the fields of scientific research, display, etc., it can ensure the color purity and accuracy of light, and avoid experimental errors or display color deviations caused by wavelength changes.

High parallelism: The output light beam has extremely high parallelism and can maintain a small divergence angle during long-distance transmission. This advantage gives it obvious advantages in applications such as laser collimation and long-distance optical communication, and can achieve high-precision positioning and signal transmission.

Strong stability: After careful design and optimization, the 445nm blue parallel line laser module can maintain stable performance during long-term operation. Its internal optical components and circuit systems have good anti-interference ability, can work normally under different environmental conditions, and reduce the frequency of maintenance and calibration.

Environmental protection and energy saving: Compared with some traditional light sources, such as mercury lamps, the 445nm blue parallel line laser module has higher photoelectric conversion efficiency, can generate enough light energy while consuming less electricity, and has better energy-saving effect. At the same time, it does not contain harmful substances such as mercury, which is more environmentally friendly.

How Can 445nm Blue Laser Line Generator Be Applied for Clothing Processing

What is the most efficient job to make clear and fine enough line indication for textile clothing processing works? It might not be limited by long distance, high height or other complex working environments etc. However, owing to its advanced use of an import 445nm blue laser diode and qualified optic lens inside a highly durable housing tube, it is able to work with high density blue laser beam emission at long extending distance. Either it is pointing at close or long distance line marking or line cutting on garment cloths, after its correct use of output power and optic lens fan angle, this direct diode emission made blue laser module just makes sure of high level of accuracy and high stability blue line indication onto multiple garment cloths effectively.

What is the exact use of a 445nm blue laser line generator?

Cutting positioning: During the clothing cutting process, the blue straight line projected by the 445nm blue laser line generator can be used as an accurate cutting mark. The worker places the cloth on the cutting table and cuts it according to the blue reference line, which can ensure that the cutting edge is neat and the size is accurate, reduce cutting errors, and improve cutting efficiency and quality. It is especially suitable for batch cutting in large-scale clothing production.

Folding positioning: 445nm blue line lase module is providing an accurate positioning blue reference line for clothing folding. When performing the folding operation, align the edge of the cloth with the blue straight laser line, and then fold and sew, which can ensure that the folding width is consistent and the line is straight, making the appearance of the clothing more beautiful and neat.

Auxiliary sewing: When the sewing machine is working, the blue reference line generated from a 445nm blue laser line generator can guide the worker to accurately control the direction of the stitching. Workers sew along the blue lines, which can make the seams straighter and more even, avoid skewing or deviation of the seams, and improve the sewing quality, especially for some parts that need straight sewing, such as trouser seams and sleeve seams.

Pattern positioning: If a specific pattern needs to be printed or embroidered on the garment, the 445nm blue line laser module can first project the outline or key lines of the pattern on the fabric as a positioning reference. Workers place the printing template or perform embroidery operations according to these lines, which can ensure the accurate and symmetrical position of the pattern and improve the printing and embroidery quality of the pattern.

What is The Exact Use of 445nm Blue Laser Diode Module?

In various raw material processing works, on consideration of ultra high precision and high brightness dot indication onto different working surfaces, it would be a quite efficient job to operate a high density beam emitted device, such as a 445nm blue laser diode module. It applies a short wavelength of 405nm, however the photon energy is much higher than other visible laser devices in all visible spectra, and higher energy can be concentrated on a smaller light spot. On condition that ultra compact structure made 445nm blue dot laser gets correct use of output power and operating voltage, it is suitable for processing and analysis scenarios that require high energy density.
Unlike the formal use of a blue laser pointer, the usual use of a 445nm blue laser diode module is in need to generate long time lasting blue laser beam and blue reference dot, thus which can be working together with other machine or equipment in real use. Its blue laser beam has good directivity and can provide precise blue dot indication onto different working surfaces. Owing to its basic equipment of thermal emitting system inside its durable metal housing tube, the genuine use of a blue dot laser is more stable and accurate than some traditional light source in industrial measurement, positioning and calibration work, and can achieve high precision dot positioning alignment and size measurement.
For a lot of industrial processing materials, especially metal materials, the absorption effect of 445nm blue laser diode module is good, which can effectively convert blue laser light energy into heat energy and achieve efficient processing, while other wavelengths of lasers may have insufficient absorption problems on some materials. Being made with a qualified glass coated and adjustable focus optic lens, whenever blue dot laser gets high concentration blue laser light, it also converts into ultra clear and precise blue dot alignment at longer distance and higher lighting occasions as well.
Being made with ultra compact structure and durable anodized aluminum alloy housing tube, available with 16mm and 26mm diameter diameter, 445nm blue laser diode module utilizing advanced semiconductor laser technology and packing technology, which is easily integrated into various equipment and systems. At the same time, it is equipped with high performance APC, ACC driving circuit board, which gets good heat dissipation, maintains stable output power and wavelength under different environmental conditions.
Applications:
Industrial processing: 445nm blue dot laser alignment can be used for welding, cutting and engraving of high-reflectivity metals such as copper and aluminum. Blue laser light source can be better absorbed by metals, achieve a controllable molten pool with lower energy, reduce vaporization, and improve processing accuracy and quality. In the fields of automobile manufacturing and additive manufacturing, high-precision material processing and surface treatment can be performed, and fine processing can be achieved by using its high energy density, high precision and high beam sensitivity.
Biomedicine: 445nm wavelength blue laser light radiation can excite the fluorescence of a variety of substances and is used in fluorescence microscopy, fluorescence spectroscopy, etc. to help observe the microstructure of biological samples and the distribution of biomolecules. It can also be used for calibration and positioning of medical equipment, as well as phototherapy applications in some new medical technologies.
Optical communication: As a light source in optical fiber communication, its short wavelength of 445nm can achieve higher data transmission rates and greater transmission capacity.
Scientific research: In the fields of photochemistry, photobiology, optoelectronics, etc., 445nm blue laser diode module can be used as an excitation light source or a detection light source to study the interaction between light and matter.

Structure Features of 445nm Blue Laser Diode Module

In order to make long time lasting and highly stable dot indication and measurement onto various working surfaces, it is not easily relying on manual dot projecting tool. When advanced 445nm semiconductor laser diode and a qualified optic lens are configured with a highly durable metal housing tube, it is manufactured into a quite professional dot measuring device of a 445nm blue laser diode module. It enables ultra clear and precise blue reference dot projection at long extending distance. When it gets constant electric power source supply and makes proper installation and integration with other machine or equipment, it is abl

e to make high speed, good directivity and low production cost dot indication for various raw material processing works.
In order to achieve ultra clear and precise dot indication, this 445nm blue laser diode module applies a qualified glass coated lens, which enables high transmittance blue laser light source emission at long extending distance. Cooperating with wide range output power range of 50mW to 100mW, and 150mW to 500mW, this shorter wavelength made laser device projects high energy density blue laser light source, and also converts into a highly precise and bright blue dot as long as 25 meters and multiple lighting occasions as well.
Cooperating with adjustable focus optic lens design, this 445nm blue dot laser gets high precision focusing system. After quite easy screw of beam aperture part, it enables highly concentrated blue laser light emission, and converts into increasing accuracy and brightness blue dot projection for greater distance and higher lighting occasions as well. Even though it is used under harsh occasion of moisture, rain, water or fog etc, it still maintains ultra stable laser beam emission and no light decay in proper use.
Being made with APC, ACC driving circuit board inside the durable housing tube, every time 445nm blue laser diode module gets constant power source from AC/DC adapter, it is able to work with constant electric power source supply and output power emitting. It can achieve the combination of low power consumption and high efficiency, and ensure the stable operation of the laser module. When it is making continuous dot indication, it gets good heat dissipation and thermal conductivity, thus it enables long time lasting blue dot projection and long serving lifetime in proper use. This structure made blue dot laser gets ultra compact size and durable housing tube design, which also has good waterproof and corrosion resistance, and can adapt to different environments.
Applications:
Industrial manufacturing: blue laser dot alignment is used for cutting and alignment of precision instruments in mechanical processing, providing alignment indicator dot for steel plate trimming in the metallurgical industry, precise marking for cutting in stone processing, and laying out and aligning in clothing cutting.
Material processing: 445nm blue laser module is capable of high-quality welding of reflective metals such as copper and aluminum, which can be used for fine engraving and cutting of materials such as wood, stainless steel, and granite.
Biomedical: wavelengths of 445nm can be used for fluorescence microscopy and microsectioning in biomedical imaging, laser therapy and laser surgery.
Optical storage and display: 445nm blue laser can be used for laser display technology and laser demonstration instruments.
Military field: it can be used as a dot sight in gun aiming applications to help with precise aiming.

Performance Advantages of 488nm Blue Laser Diode Module

How to get 488nm blue laser light source?

Not as bright as a pure 460nm blue laser light, the adoption of a 488nm blue laser diode module applies a 488nm frequency-stabilized blue laser diode as the laser light source, which achieves scientific research grade. Integrated with an import TEC temperature control system inside the durable anodized aluminum alloy housing tube, it ensures that the laser diode can work stably and output a stable 488nm wavelength laser light source at different ambient temperatures.

Generally 488nm blue laser includes a qualified glass coated lens and focusing lens, which collimate and focus the divergence blue laser beam by the 488nm blue laser diode, thus laser beam becomes a high bright and visible blue dot with ultra compact size, and makes sure of ultra clear and precise dot positioning results onto any targeting surface.

Supported by an AC/DC adapter, 488nm blue laser diode module enables highly stable laser output power, long time lasting blue laser beam and blue laser dot projection from beam aperture. Integrated with APC, ACC driving circuit board, it can prevent overheating and over current impact, thus it perfectly protected laser diode from being damage or burning out due to excessive current or high temperature.

Performance:
488nm blue laser has specific optical properties and energy, which can interact with specific substances, such as exciting specific fluorescent dyes. It is a frequency-stabilized laser which has a power stability (RMS, over 4 hours) of <3%, thus maintaining stable power output for a long time. Some of blue laser module supports TTL modulation, and the modulation rate can reach 0-50KHz, which can realize fast switching control and intensity modulation of the laser. Owing to its low laser beam divergence and good directionality, it always maintains highly concentrated blue laser light source emission and ultra compact size blue dot projection at long extending distance effectively.

Advantages:
488nm blue laser diode module has high monochromaticity, which helps a lot for precise optical measurement in a lot of application fields. Owing to its highly concentrated energy on a specific wavelength, it can effectively excite specific fluorescent substances, and has obvious advantages in fields such as fluorescence imaging. When it gets low laser beam divergence angle, it gets ultra compact size and bright blue reference dot projection with high positioning accuracy, which can be used in occasions where precise position indication is required. In materials science, blue laser beam can be used for Raman spectroscopy research to help analyze the molecular structure of materials.

Application Prospects

Biomedical field: 488nm blue laser diode module is used as an excitation light source in flow cytometry to analyze and classify cells, high-resolution three-dimensional imaging in confocal laser scanning microscopes.
Materials Science Field: when blue laser light source is used used for Raman spectroscopy analysis of materials to study information such as the molecular structure and chemical bonds of materials, it can also be used for micro-processing of materials, such as laser etching, laser annealing, etc., to perform fine processing of microelectronic devices.
Semiconductor Manufacturing Field: 488nm blue laser module can be used in photolithography processes so as to improve the accuracy and integration of chip manufacturing. In the detection and analysis of semiconductor materials, its high resolution and precise optical properties are used to detect defects and impurities in semiconductor materials.

Intense Beam Emitted 447nm Blue Laser Diode Module

How to get 447nm blue laser light?
Generally blue laser light is generated based on 447nm blue laser diodes, and the lasers are focused and shaped through an optical lens group to emit a clear and stable blue dot laser beam. Some all-solid-state blue lasers use LD pump crystals to achieve laser output, and use this as the fundamental wave to directly triple the laser frequency of a quasi-periodic structured LT light, thereby obtaining a 447nm blue laser.
Features:
447nm wavelength is in the blue light band and has specific optical properties. It has unique advantages in some applications that require a specific wavelength light source. It can emits a blue laser dot beam with high directivity and focusing, and mainly used for precise dot positioning, indication and other purposes etc.
In the field of industrial control, surveying and mapping, 447nm blue laser diode module can provide high precision measurement and positioning to ensure the accuracy of production and construction.
Applications:
In industrial fields, 447nm blue laser diode module can be used for precise dot positioning and calibration in laser cutting, laser welding, laser marking and other processing works. It is able to make clear blue reference dot indication and identification in industrial automation production lines.In laser medical fields, 447nm blue laser light is used for medical cosmetology, treatments such as removing spots and wrinkles. In medical testing, it can be used as a specific blue laser light source for analysis and diagnosis.
In scientific research fields, such as physics, chemistry, biology and other disciplines, 445nm blue dot laser can be used for experiments such as spectral analysis, fluorescence excitation, and optical tweezers technology, providing important research tools for researchers.
Employed by a qualified semiconductor blue laser diode, 447nm blue laser diode module applies a qualified glass coated lens inside a high duration anodized aluminum alloy housing tube. In process of long time lasting dot measuring works, it enables stable and bright blue laser light source emission within wide range operating temperature, and other harsh working occasion of mechanical moving, shocking or calibration etc. It generates high transmittance and high density blue laser light source at long extending distance, even though it is pointing under high lighting occasion, blue dot laser still makes ultra clear and bright blue dot generation as expected.
With the continuous advancement of science and technology, the performance requirements of 447nm blue laser diode module will continue to increase, and their applications in emerging fields such as 5G communications, artificial intelligence, and the internet of things will also be more extensive.

Unique Use of Short Wavelength 405nm blue violet dot laser alignment

When dot measuring work is processing under special work fields, such as detection or spectrum analysis etc, it is always a very helpful job for users to operate a short wavelength made device of a 405nm blue violet dot laser alignment. It gets a bit shorter wavelength than blue lasers, however, which still gets quite high thermal energy emission in continuous use. In those of industrial and high tech precise dot measuring work fields, owing to its good thermal emitting design and qualified semiconductor laser diode inside, this 405nm violet laser module always maintains ultra long time lasting, highly stable and reliable violet dot emission for all working occasions effectively.
the creation of a 405nm blue violet dot laser alignment makes the best use of an import 405nm violet laser diode within 50mW to 100mW. Cooperating with a good metal heat sink cooling system, it always gets superior nice thermal emitting and ultra stable violet laser dot projection within long time lasting work time of 10 hours per day. Owing to the use of durable anodized aluminum alloy housing tube, this 405nm violet laser module bears wide range operating temperature, and other mechanical moving or shocking as well. Even though it makes dot indication in quite harsh working environments, it still maintains highly stable violet dot projection, and long serving lifetime easily.
In a large variety of ambient temperature, this 405nm blue violet dot laser alignment can adapt to high temperature environments since it gets quite nice heat dissipation design and cooling system. Owing to its unique effects on many materials, it is also making a good performance for processing and inspections works of semiconductor materials, photosensitive materials, biological tissues, etc. When violet laser diode module is used as an accessory part of other device or equipment, it can also make good job for optical storage, biomedicine, laser processing, laser displaying technology etc.
When 405nm blue violet dot laser alignment gets constant power source supply from a 5V, 9V 1000mA DC power supply, cooperating with APC, ACC driving circuit board design, it assures long time lasting and high stability dot measurement and indication for all raw material processing works. At the same time, owing to its potential thermal energy hurt to human eyes and skins, it is a key issue to pay special attention to laser safety issue and wear correct laser safety goggles, thus this industrial stabilized alignment laser makes easy, secured and no danger use for all working occasions conveniently.

Easy Used 445nm Blue Crosshair Laser Module

If the genuine cross line projection work is processing at a quite long work distance, not simply relying on any manual labor force input, it should be a quite nice experience for users to operate a high density beam emitting tool of a blue crosshair laser module. It is keeping work with intense and highly visible blue laser beam emission from an import laser diode with wide range output power. Cooperating with the best quality glass coated lens with different fan angles and constant electric power source supply, this cross laser alignment tool always makes easy reaching, high precision and high brightness blue vertical and horizontal lines generation at long extending distance constantly.
Being made with an import 445nm blue laser diode within 50mW to 100mW, not the same as a formally used laser pointer used for temporary positioning work, this 445nm blue crosshair laser module is working together with other industrial machine or device. It gets advanced use of a 16mm diameter anodized aluminum alloy housing tube. Owing to its direct laser light source emission, not as bright as a 473nm blue DPSS laser system, this blue cross laser still gets quite nice thermal emitting and ultra stable blue reference line projection within long lasting work time of 10 hours per day.
According to quite special use of a qualified glass coated lens with different fan angles of 10, 15 and 110 degree, whatever kind of working surface it is pointing, this blue crosshair laser module always emits different dimension blue cross line source within 0.5 meter to 6 meters lengths in use. Being made with a glass window in front of laser beam aperture, even though it is used under moisture, dust, rain, water or fog, this blue cross laser alignment still gets no effect by harsh working occasion, and maintains highly clear and precise cross line projection for multiple fields, covering laser show, laser displaying, laser communication, spectrum analysis and high tech work etc.
Owing to its special use of electric wires extension for both of 445nm blue cross line laser module and DC power supply, not any longer limited by long distance, high height and other complex working environments etc, it enables quite easy installation and quick response blue cross line source generation within great distance of 25 meters. The unique use of adjustable focus optic lens enables freely adjusted cross line fineness and projecting direction, and brings users increasing accuracy and brightness cross line projection at long extending distance. Whenever blue alignment laser emits powerful blue laser radiation and potential thermal energy hurt to eyes, after proper wearing of laser safety goggles, it enables no danger, no track and no mistake use for all working occasions effectively.