D4mm laser collimating and focusing optical lens aspheric lens focal length 4mm
Product Code|AL-02
Material D-ZK3
Design wavelength 405nm
NA (numerical aperture) 0.4
CA (effective clear aperture)|3.2mm
EFL (Effective Focal Length)|4.00mm
Working distance|2.92mm
Outer diameter|(p4.0(0/-0.02)mm
Center thickness|2.0(±0.02)mm
Wavefront aberration (RMS)<0.051
Coating|AR coating:Rmax<0.5%@design wavelength ±20nm
LD glass cover thickness 0.25mm
LD glass cover material BK7
 
 
★【Precautions for use】(Buyer must read)★
 
1. Some laser modules emit infrared and ultraviolet light that are invisible to the human eye when they work. Do not think that the laser is malfunctioning and check with your eyes. When inspecting the laser module, make sure that the laser module is powered off.
2. Do not look directly at the launch port of the laser module even if you wear laser protective goggles.
3. Do not look directly at the reflected light of laser modules above Class IV (>500mW). Please wear laser protective glasses when using such laser modules.
4. It is forbidden to place flammable, explosive materials and black paper, cloth, leather and other low-ignition materials on the laser path (except for laser damage experiments)
5. Lasers above Class IIIa (5mW) may cause burns to the human body. Do not direct this laser to the human body.
6. Do not place the laser module where non-professionals can reach it.
7. It is forbidden to direct the laser to the glass in front of you. Conventional glass has a reflectivity of about 4%, which may cause the reflected laser light to enter the eyes and cause damage.
8. When you build the experimental platform, there will be a "working plane" at the height of the laser module launch port. Please do not bring your head close to this working plane during laser work, because the light reflected and transmitted by the lens and mirror group may be It may get into eyes and cause injury. Do not raise the launch port and reflector of the laser module, which may cause the upward laser beam to enter the eyes and cause injury.
9. When you work with the laser module, please take off your watch and jewelry to avoid the reflected light from entering your eyes and causing damage.
10. When using infrared laser modules, lasers with wavelengths> 800nm ​​are almost completely invisible. Please use a detector or upconverter to determine the position of the laser beam.
11. Please note that the visual intensity of lasers in some bands (such as lasers with a wavelength below 430nm or above 700nm) will be significantly weaker than the actual intensity.
12. The peak power of the pulsed laser is extremely high, which may cause damage to the experimental components. Please confirm the damage resistance threshold of your experimental components before use.
13. It is forbidden to use laser modules to irradiate moving vehicles such as cars and airplanes.
14. Please place a black metal plate at the end of the experimental environment to prevent the laser from leaking to the space outside the working area.
15. The laser module products below 1mW launched by our company will not cause harm to the human body, please rest assured to use.
Suggestions for using laser:
1. When you use laser, we strongly recommend that you wear laser protective glasses with corresponding wavelength to protect your eyes from the threat of laser.
2. We recommend that you wear long white clothes, so that even if the laser irradiates your body, it will not burn your clothes and cause fire.
3. When using ultraviolet lasers, we recommend that you apply sunscreen above SPF30 on the surface of your bare skin to protect your skin from ultraviolet light.
Packing: 1pc
Shelf life: 120 days
DataCaciques