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:
May. 22, 2001
Filed:
Jul. 25, 2000
Akira Sato, Shiga-ken, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An optical head device which has an optical element and an optical fiber. The optical element is made of a material with a high refractive index and has a planar first reflective surface and a spheroidal second reflective surface. A hole which serves as a light transmitting portion is made in the center B of the first reflective surface, and a concave portion which transmits a divergent bundle of rays emitted from a radiating point A of the optical fiber is made in the center of the second reflective surface. The points A and B are optically in conjugation with each other. The divergent bundle of rays emitted from the radiating point A passes through the concave portion and is incident to the optical element. Then, the light is reflected by the reflective surfaces, thereby being converged on the hole, and is emergent from the optical element through the hole.