Optical low-pass filter

Details Optical low-pass filter Optical low-pass filter

1981-04-17

1984-09-18

Arnold, Bruce Y.

Facsimile and static presentation processing

Static presentation processing

Attribute control

350167, H04N 907, G02B 520

Patent

active

044727356

ABSTRACT:
An optical low-pass filter is used in a television camera which has an optical system including an iris and a color stripe filter. The optical low-pass filter comprises a base plate, and a plurality of bi-prisms respectively formed on at least one surface of the base plate, and extending parallel with respect to one direction, where the plurality of bi-prisms are arranged at a pitch which is smaller than the diameter of a minimum aperture used of the iris.

REFERENCES:
patent: 2733291 (1956-01-01), Kell
patent: 3716666 (1973-02-01), Larsen
patent: 3781091 (1973-12-01), Ferguson
patent: 3821795 (1974-06-01), Okano
patent: 4093346 (1978-06-01), Nishino et al.
patent: 4178611 (1979-12-01), Okano

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