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:
Dec. 05, 2000
Filed:
Jul. 18, 1997
Nobuchika Momochi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In an apex-angle variable prism comprising a combination of a planoconcave lens and a planoconvex lens, at least one lens is simply and stably rotated along the spherical surfaces of these lens by using a compact actuator. In order to rotate the planoconvex lens along the spherical surface of the planoconcave lens, the one end of the planoconvex lens is supported by a pivot bearing disposed on the rotational center line X.sub.2 which passes through the center O.sub.2 of the radius of curvature of the sphere of the planoconvex lens, and the other end of the planoconvex lens is rotated along the rotational reference plane Z perpendicular to the rotational center line X.sub.2 by using a compact DC motor.