Optical low pass filter

Details Optical low pass filter Optical low pass filter

1985-09-16

1988-05-10

Arnold, Bruce Y.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 55, G02B 530, H04N 9097

Patent

active

047431008

ABSTRACT:
An optical low pass filter used in a video camera having a solid state image sensing device and a color separating filter is disclosed, which includes a first double refraction plate being arranged to separate an incident light ray to an ordinary light ray and an extraordinary light ray which is displaced from the ordinary light ray by a distance d in a direction with the angle substantially equal to .theta. relative to the horizontal scanning direction of the solid state image sensing device, wherein cos 2.theta.=.sqroot.2/3(0.degree.<2.theta.<90.degree.), and a second double refraction plate being arranged to separate an incident light ray to an ordinary light ray and an extraordinary light ray which is displaced from the ordinary light ray by a distance d in a direction with the angle substantially equal to -.theta. relative to the horizontal scanning direction of the solid state image sensing device, whereby the optical low pass filter has the spatial frequency characteristic having a first trap frequency u.sub.1 and a second trap frequency 2u.sub.1.

REFERENCES:
patent: 4539584 (1985-09-01), Otake
patent: 4575193 (1986-03-01), Greivenkamp, Jr.

Affiliated with

Also associated with

Rating

Optical low pass filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical low pass filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical low pass filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1316689