Photographic optical apparatus

Details Photographic optical apparatus Photographic optical apparatus

1985-05-01

1987-07-21

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358909, H04N 5225, G02B 1316

Patent

active

046822372

ABSTRACT:
A photographic optical apparatus including a beam splitter for splitting the optical path of an objective lens, a video pickup device arranged in one of the split optical paths, an optical low pass filter and a color separation filter arranged between the beam splitter and the video pickup device, a prism for changing the direction of the optical path arranged on the other split optical path, an eyepiece arranged on the optical path of the light coming through the prism, a pre-assumed image plane lying between the beam splitter and the prism and an image correcting plate of equal optical thickness to the sum of the lengths of the optical paths of the optical low pass filter and the color separation filter. The plate is arranged between the pre-assumed image plane and the beam splitter. The image correcting plate also serves to split off part of the light and then to guide it to a sensor for light metering.

REFERENCES:
patent: 3710699 (1973-01-01), Mitani
patent: 4172646 (1979-10-01), Matsumoto
patent: 4366501 (1982-12-01), Tsunekawa et al.
patent: 4626918 (1986-12-01), Morisawa

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