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:
Mar. 10, 1987
Filed:
Aug. 01, 1984
Norio Mizutani, Kawasaki, JP;
Toshiyuki Kasai, Matsudo, JP;
Nippon Kogaku K.K., Tokyo, JP;
Abstract
An illumination apparatus for testing photoelectric devices such as solid-state image sensors is capable of easily switching between sufficient uniform illumination and high-luminance spot illumination at high speed, and of performing various types of measurements by switching on/off various types of optical elements. The illumination apparatus has a main optical system for uniformly illuminating a test chart which is projected on a solid-state image sensor and an auxiliary optical system for supplying auxiliary light rays to the main optical system so as to achieve high-luminance spot illumination. The auxiliary optical system is detachably mounted with respect to the main optical system.