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:
Sep. 16, 1997
Filed:
May. 24, 1996
Applicant:
Inventor:
Takayasu Shishido, Tokyo, JP;
Assignee:
Asahi Seimitsu Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359634 ;
Abstract
A color separation prism assembly includes an imaging lens, a blue light separation prism, a red light separation prism and a green light transmission prism, arranged in this order behind the imaging lens. A blue light reflecting dichroic layer is located between the blue light separation prism and the red light separation prism. A red light reflecting dichroic layer is located between the red light separation prism and the green light transmission prism. The prism assembly satisfies the relationships defined by