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:
Oct. 26, 1982
Filed:
Sep. 24, 1979
Hiroyoshi Funato, Chigasaki, JP;
Yoshio Fukushima, Machida, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A hologram lens capable of converting an output beam of light emitted from a semiconductor to a reconstruction light suitable for reconstructing holograms is prepared by use of the object light, which resembles a beam of light emitted divergently from a semiconductor laser for reconstructing holograms and which travels, in the opposite direction to the travelling direction of the beam of light from the semiconductor laser, in such a manner as to converge on a light emitting portion of the semiconductor laser, and the reference light which is an isotropic beam with a circular cross section. The object light is obtained by use of an optical system capable of converting an output beam emitted from semiconductor lasers to an isotropic beam of light with a circular cross section when the output beam of light is caused to pass through the optical system from its input side Lin to its output side Lout, and by causing an isotropic beam of light with a circular cross section to pass through the optical system from the output side Lout to the input side Lin.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile