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:
Aug. 06, 2002
Filed:
Oct. 19, 1999
Haruo Tanaka, Kyoto, JP;
Hironobu Sai, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
It is an object of the present invention to provide a surface light-emitting device that can realize a lightweight and compact-profile optical input/output device with reasonable price, especially the one that emits light. The beam generator comprises a surface light-emitting device having a stacked-layer formed of a cathode , a luminescent layer made of organic material(s) and an anode in that order, the stacked-layer being located adjacent to a glass substrate . The anode is a transparent electrode that is formed to correspond to a hologram pattern of a condensing lens. When a DC voltage is applied between the cathode and the anode with the DC power source, the luminescent layer illuminate corresponding to the hologram pattern of the condensing lens, and the light will converge to a focal point of the condensing lens. Therefore, the surface light-emitting device can play the both roles of the light source and the condensing lens. Thus, the use of this surface light-emitting device permits realization of a lightweight and compact-profile beam generator with reasonable price.