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:
Feb. 18, 1986
Filed:
Jan. 25, 1983
Kimio Uematsu, Tokyo, JP;
Nippon Kagaku K.K., Tokyo, JP;
Abstract
A light control device includes a planar light-intercepting blade disposed across the optical path of an optical device and driving means for holding the light-intercepting blade and moving the light-intercepting blade in the direction of the surface thereof. The planar light-intercepting blade includes a first area having a substantially constant thickness, a second area surrounded by the first area and thinner than the first area and a coupling portion provided in the first area and coupled to the driving means. The first and second areas are formed so that the proportion of the blade occupied by the second area relative to the first area in the direction of movement of the light-intercepting blade gradually increases in the direction away from the coupling portion.