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:
Jun. 25, 2002
Filed:
Feb. 08, 2000
Akishige Ito, Tokyo, JP;
Katsushi Ohta, Tokyo, JP;
Toshiyuki Yagi, Tokyo, JP;
Mitsuru Shinagawa, Isehara, JP;
Tadao Nagatsuma, Sagamihara, JP;
Junzo Yamada, Ebina, JP;
Other;
Abstract
An electro-optic probe is provided which is able to prevent unnecessary reflected light from optical components in the electro-optic probe from entering photodiodes. The optical components which constitutes an isolator are disposed inclining from an optical path of a parallel light emitted from a collimating lens , such that the unnecessary reflected light beams from these optical component surfaces are not incident to the photodiodes and . The inclination angle of these optical components are set within a range from an angle formed by an optical path from said optical component to a light receiving element in said photodiode, and the diameter of said light receiving element to an angle allowable for the optical component to maintain the transmittance thereof.