The image above shows one of my three my high power 50-150-250 watt IR light sources NOTE: This is a way to have cheap hi-power infrared outdoor lighting. At your local hardware store (I found mine at walmart) Look for 50 to 150 watt outdoor flood lamps with red lens, the best flood lamps are maded by Sylvania par 38 Red 100 watts flood lamp these have a infra-red filter coating. The following lamp I consider experimental and dangerous using a bathroom type infrared heat lamp that is nearer to the IR frequency with less visibly to the eye. You need an all weather open front enclosuer (I use two coffee cans strap together with a open front and bottom vent holes) for outside use to keep rain off as they get very hot and would explode, and a common light dimmer to run it at half power to keep it cooler, the newer CCD had exview cameras will work fine to view the bright IR long distance light, to control the flood light brightness and heat I install a common light 300 watt dimmer..
Common red flood lights have visible red glow and work well with just about any kind of b/w video camera, and are fairly safe to view from a distance.
The human eye sees electromagnetic radiation in the 380 to 760 nm band as visible light. Energy at the short end of the visible spectrum 380 - 450 nm is violet, blue 450 - 490 nm, green 490 - 560 nm, orange 590 - 630 nm. While the longest visible waves 630 - 780 nm appear red. As you go toward 905nm infrared radiation it becomes invisible to the eyes, but you could sense it with your skin. Anything that is warmer than its surroundings emit infrared rays.
Not knowing when an invisible IR light source is on you will always be tempted to look toward the IR LED, viewing upclose near IR-invisible LEDs with a quarter of one watt power will destroy your eyes if you stare into them, be at least 3 feet away.
Radio shack 276-0099 IR detector works good on seeing invisible IR. Looking at the frequency 905nm IR LED is truly invisible to the human eye, at 780nm this approaches the limit of most peoples vision, at 880nm only a few people can see this one. As you near the invisible IR frequency your regular b/w CCD, CCTV cameras are not senitive enough and requires much more expense cameras, lens and filters for a total invisible system.
INVISIBLE GLOWING LEDS 940nm (No red glow).
Covert surveillance with no detection that you have night vision
displayed through your security system. 56 IR invisible LEDs night vision illuminator found on the internet for $65.00..This light source works fine on exview cameras .05 lux or lower..
ALL OTHER LEDS SOLD ON EBAY HAVE GLOWING ILLUMINATION, EXCEPT OURS! We also carry a gold ball sized 24 led model. 104ir is also available.
THE OTHER LED CAMERAS WE SELL THAT GLOW RED, OR PURPLE, ARE A BIT MORE POWERFUL, BUT WILL BE SEEN AT NIGHT IF YOU LOOK UP AT THEM.
DEFENDER 56-IR ILLUMINATOR:
940NM WITH CdS SENSOR CIRCUITS TO AUTO ON-OFF THE ILLUMINATOR AUTOMATICALLY WHEN IT STARTS TO GET DARK.
NOTE: Most Black/White video cameras will work on red glow Infared.
Color exview cameras .05 lux will work with the invisible LED night vision (No red glow)
My home security system theme is like in The old castle days with a water mold around the walls for protection, only I have a barb wire chain link security fence with a electronic IR beam, guard dog, and twenty IR day/night cameras covering my property line perimeter..
NOTE: When your older cameras need maintance it would be cheaper to replace them with the CCD Super Had cameras or for more money the CCD HAD Ex-View B/W .0003 lux or color .05 lux auro Iris type of cameras
EX-View is a proprietary SONY technology in which the P/N junction of each photodiode in the CCD matrix is specially fabricated to have much better photon-to-electron conversion efficiency. In addition, each photodiode (representing one pixel in an image) has a microscopic lens fabricated over it to better capture and focus light onto the active semiconductor junction. This results in an improvement in light sensitivity of 2 times for visible light and 4 times for near-infrared (800 ~ 900 nm) compared to the conventional CCD versions offered by SONY. The lux rating of the EX-View CCD is two times better than the premium SONY "Super HAD" CCD for both visible and near-infrared wavelengths.
There are more latent imperfections in the photodiodes of the EX-View CCD chip compared to the Super HAD sensors. These few defective CCD elements may break down, thereby causing "dead pixels", which leave white or black spots on the image which cannot be removed. Dead pixels are known to develop whether the CCD chip is in storage or in active use. An EX-View CCD might ship from SONY's factory with only 3 dead spots but the number might increase to 5 during transportation and then perhaps grow to 7 while sitting in the camera manufacturer's warehouse and grow further to, say, 12..The number of dead pixels might later grow to 15 to 30 by the time the camera is received by the end user. This process will continue until the latent defects in the photodiodes stabilize. The growing number of dead pixel elements is caused by cosmic rays that bombard the more vulnerable junctions of some of the photodiodes in the CCD array.
Plug your CCD camera into your VCR if you want to record or you can plug directly into the (yellow) video input on your TV for a good security camera monitor.
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