Vandis2
0
- Joined
- Jul 3, 2013
- Messages
- 11
- Points
- 0
I'm a newb and glad to be on the forum.
Am trying to put together a relatively high powered focusable Laser illuminator good to 300+yds for the economy and fun of it all.
I just bought and am waiting to receive an infrared EJ230 bullet camera from Kt&C and the specs indicate that its SONY 960H CCD sensor is calibrated for ~850nm IR spectrum light radiation.
From what I have learned from videos and others, and if my memory serves me right, this EJ230 camera loses sensitivity and brightness to IR illumination exceeding 900nm (i.e. 940nm IR flashlight).
But what happens within the chip sensor when exposed to reflected light illumination at longer than 850nm wavelengths, specifically at 808nm?
Would this wavelength generate brighter images?
The reason I ask is because I am looking to pay considerably money for an 850nm laser diode or module, which begins to defeat the whole purpose of the build.
In looking for a high powered 850nm diode or module, I have discovered that the most common mass produced IR industrial laser diodes over 300mW, and the most available, seem to be the 808nm diodes.
Hence prices are very low internationally relative to the 808nm diode, as most of you know.
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.
Can anyone give an educated guess as to what my 850nm camera will give me when recording illumination generated at 808nm wavelengths as verses 850nm?
And BTW, I do know of the safety risks involved in using high powered IR laser illuminators over IR LEDs.
Am trying to put together a relatively high powered focusable Laser illuminator good to 300+yds for the economy and fun of it all.
I just bought and am waiting to receive an infrared EJ230 bullet camera from Kt&C and the specs indicate that its SONY 960H CCD sensor is calibrated for ~850nm IR spectrum light radiation.
From what I have learned from videos and others, and if my memory serves me right, this EJ230 camera loses sensitivity and brightness to IR illumination exceeding 900nm (i.e. 940nm IR flashlight).
But what happens within the chip sensor when exposed to reflected light illumination at longer than 850nm wavelengths, specifically at 808nm?
Would this wavelength generate brighter images?
The reason I ask is because I am looking to pay considerably money for an 850nm laser diode or module, which begins to defeat the whole purpose of the build.
In looking for a high powered 850nm diode or module, I have discovered that the most common mass produced IR industrial laser diodes over 300mW, and the most available, seem to be the 808nm diodes.
Hence prices are very low internationally relative to the 808nm diode, as most of you know.
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.
Can anyone give an educated guess as to what my 850nm camera will give me when recording illumination generated at 808nm wavelengths as verses 850nm?
And BTW, I do know of the safety risks involved in using high powered IR laser illuminators over IR LEDs.