Optical system for projecting an image onto a low resolution pho

Details Optical system for projecting an image onto a low resolution pho Optical system for projecting an image onto a low resolution pho

1987-12-01

1989-09-26

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

350432, H04N 5225

Patent

active

048704962

ABSTRACT:
The invention is generally directed to an optical system for a CCD light sensor based camcorder. A plastic lens mechanism focuses outside light onto the CCD light sensor. An infrared filtering member in the optical path between the outside light and CCD light sensor attenuates the infrared portion of the spectrum from the outside light. A second filtering mechanism in the optical path between the outside light and CCD light sensor attenuates a portion of the spectrum from the outside light having a wavelength shorter than a cutoff wavelength. As a result, only a portion of the outside light in a pass band between the cutoff wavelength and the infrared portion of the spectrum reaches the CCD light sensor.

REFERENCES:
patent: 4288513 (1981-09-01), Kilichowski et al.
patent: 4310222 (1982-01-01), Ikemori
patent: 4584606 (1986-04-01), Nagasaki
patent: 4687282 (1987-08-01), Ferrante

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