OLPF(33380-850+AR)) Filter

Detailed Product Description

   When we use the CCD, CMOS photon sensor parts to screen color scenery, because for color, the response of CCD, CMOS is different from peoples eye, so we should eliminate infrared which photon sensor parts can sense but peoples eye cant, at the same time adjust its reaction for color in the visible light scope, and to make the color of the image accord with peoples eyes felling. So we do IR (AR) coating (interference type) on the OLPFs surface or put the OLPF go with a glass (absorb type) first, then to use them. Because refractive index of quartz is different from air, so it will bring glint on the interface then lower incident lights strength. In order to lower reflective loss, on the other side of the OLPF do a reflective coating to advance the airs transmittance, and raise quality of image.  

No.	Item	Thickness	θ		Flatness (NR)
1	quartz	0.75±0.05   DN850 Coating	45°	45°	3
2	quartz	1.08±0.05	45°	0°	3
3	quartz	0.75±0.05  AR Coating	45°	135°
4	CCD Sensor:ICX408AK;ICX409AK

Specification of defect::

Natural of Defect	Effective area
Inclusion/Bubble/Pit	40µmMax
Dust	Can be blew away is acceptable
Scratch	20µm Max.In width; Invisible after rotated
Edge Chips	Max.0.3mm
Memark	Inspection environment: With class1000 clean room/class100clean booth and 60W bull lamp and around 15cm to objective with normal net eyes.

Durability test:
1)Any defect shall not be found after 500hours at 85;
2)Any defect shall not be found after 500 hours at -20,
3)Any defect shall not be found after 10 cycles of test as follows:
-2030minutes~+2530 minutes~+8530 minutesas 1 cycle.
Package:
 Packing shall be made with a container which is made of a vacuum molded conductive PVC(polyvinyl chloride)and not touch the main surface of optical low pass filter.