There are three main types of IR illuminators: diodes, lamps, and lasers. Diodes are small, inexpensive, and good for short-range illumination.
They also require relatively little power to operate. Infrared lamps are more expensive to buy and maintain, but they can operate at greater distances and are often better for facial identification.
Lasers are excellent for long-range image clarity, even in inclement weather, but they’re expensive, and potentially harmful to the eye if not handled correctly-which is why they’re usually reserved for industrial and military use.
Dear Sir. Concerning your issue about the types of IR illuminators . There are different types of IR illumination devices including LED light, laser type and filtered incandescent lamps. These are high power lamps that are covered by an infrared filter. It lets the infrared radiation pass and blocks the visible light component. LED illuminators utilize a group of standard infrared emitting LEDs. The laser types are the most efficient among IR illuminators. These devices are based on an infrared laser diode which produces near infrared energy. As IR illuminators have several advantages over other night vision technologies, they have merged as the most in demand among a wide range of industries and businesses. Apart from being cost-effective as compared to other options, IR illuminators also offer better quality as they can perform high-speed video capture; see through darkness, mist, fog, rain and snowfall etc; and eliminate the inconsistency of ambient light. As the market has a growing demand for these, Axton Technologies brings a range of IR illuminators along with LED light and other professional lighting solutions for security and surveillance. I think the following below links may help you in your analysis:
https://irilluminators.wordpress.com/
http://www.midlantic.net/forms/infrared%20specification%20guide_020408.pdf
https://thegunzone.com/best-ir-illuminator-infrared-flashlight-floodlight-outdoor-night-vision-reviews/
Thanks
thank you for this interesting topic, can anyone share a paper for illumination type
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