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. 10, 1978
Filed:
Feb. 15, 1977
Applicant:
Inventors:
Shoichi Ohneda, Wakayama, JA;
Yukio Okano, Mimamikawachi, JA;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JA;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; G02B / ;
U.S. Cl.
CPC ...
358 44 ; 350166 ;
Abstract
A combination optical low pass filter adapted for use in a single or double tube color television camera is provided with a phase retarding pattern on a transparent substrate. The pattern includes optical elements having a transmissivity which varies with the wavelength of light passing there through so that the optical low pass filter functions as both a phase diffraction and an amplitude diffraction filter. Medium indexed filler material can further supplement the pattern to eliminate any light scattering.