The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1987
Filed:
May. 19, 1986
Yoshihisa Yamaguchi, Tokyo, JP;
Yamaguchi Cinema Corporation, Tokyo, JP;
Abstract
A shutter for use in a television camera, including: a casing having a first wall having a first opening formed therethrough for allowing incident light from a lens of the television camera to pass through the first opening and a second wall opposingly disposed to the first wall and having a second opening aligned to the first opening for allowing the incident light to pass through the second opening into a body of the television camera; a first disc member supported within the casing to be rotatable about an axis thereof and in parallel with the first and the second walls, the first disc member having a first shutter hole formed therethrough; a second disc member supported within the casing to be rotatable about an axis thereof and in parallel with the first and the second walls, the second disc member having a second shutter hole formed therethrough, the first disc member and the second disc member being disposed to overlap at overlapping areas at peripheries thereof with a gap, the first and second shutter holes formed to be aligned to each other and to the first and second openings at the overlapping areas to define a shutter opening when the first and second disc members rotate; a rotating mechanism, mounted on the casing, for rotating the first and the second disc members in the same direction; and a controlling mechanism for controlling the rotating mechanism to thereby control the rotation of the first and the second disc members so that the forming of the shutter opening is synchronized with a field scanning of the television camera, whereby the incident light is allowed to pass through the first opening, the shutter opening and the second opening in synchronism with the field scanning of the television camera.