Am trying to put together a focusable infrared laser illuminator good to 300+yds for the economy and fun of it all.
I am interested in hunting at night hogs here in South Texas and maybe troublesome coyotes.
Some questions for the more learned among us.
I just bought and am waiting to receive a KT&C "EJ230" bullet infrared camera and the specs indicate that its SONY 960H CCD sensor is designed to be most sensitive to infrared light at a wavelenght of 850nm. I plan to generate images from this camera with a laser illuminator and view them on a digital LCD monitor.
From what I have heard others say and I have seen on videos, this EJ230 camera loses sensitivity and brightness when IR illumination exceeds 900nm (i.e. 940nm IR flashlight).
But how do CCD chip sensors react to reflections from illumination at less than 850nm, specifically 808nm?
My main question then is:
How would images generated via an 808nm laser diode appear compared to those of 850nm on my camera?
The reason for this question is that I have been looking for a high powered 850nm diode or module to match this camera, but I have discovered that the most common mass produced IR industrial laser diodes over 300mW seems to be the 808nm, hence prices are very low internationally for 808nm diodes.
For example on ebay an 850nm-300mW diode sells for $54 whereas an 808nm 300mW sells for only $3.
And a full laser module with heat sink (808nm-800mW) can be bought for less than $100 whereas a similar 850nm is almost 4x that cost.
So if this project is going to fly it will likely have to be with an 808nm diode or module in order to keep cost down.
Does anyone have an educated guess as to what this infrared camera is going to pick up when viewing reflections of light generated by an 808nm diode emitter?
I am interested in hunting at night hogs here in South Texas and maybe troublesome coyotes.
Some questions for the more learned among us.
I just bought and am waiting to receive a KT&C "EJ230" bullet infrared camera and the specs indicate that its SONY 960H CCD sensor is designed to be most sensitive to infrared light at a wavelenght of 850nm. I plan to generate images from this camera with a laser illuminator and view them on a digital LCD monitor.
From what I have heard others say and I have seen on videos, this EJ230 camera loses sensitivity and brightness when IR illumination exceeds 900nm (i.e. 940nm IR flashlight).
But how do CCD chip sensors react to reflections from illumination at less than 850nm, specifically 808nm?
My main question then is:
How would images generated via an 808nm laser diode appear compared to those of 850nm on my camera?
The reason for this question is that I have been looking for a high powered 850nm diode or module to match this camera, but I have discovered that the most common mass produced IR industrial laser diodes over 300mW seems to be the 808nm, hence prices are very low internationally for 808nm diodes.
For example on ebay an 850nm-300mW diode sells for $54 whereas an 808nm 300mW sells for only $3.
And a full laser module with heat sink (808nm-800mW) can be bought for less than $100 whereas a similar 850nm is almost 4x that cost.
So if this project is going to fly it will likely have to be with an 808nm diode or module in order to keep cost down.
Does anyone have an educated guess as to what this infrared camera is going to pick up when viewing reflections of light generated by an 808nm diode emitter?
