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. 01, 2002
Filed:
Mar. 08, 2002
Jung Hyun Lee, Suwon, KR;
Yoon Shik Hong, Sungnam, KR;
Hyun Kee Lee, Suwon, KR;
Sung Cheon Jung, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Abstract
A variable optical attenuator to provide a new drive mechanism for an actuator, whereby the amount of attenuation does not increase in geometric progression as voltage increases, and an exceptional resolution effect is achieved. The variable optical attenuator comprises a transmission fiber for transmitting beams of light, a reception fiber arranged on the same axis with the transmission fiber and receiving the light beams transmitted by the transmission fiber, a variable shutter arranged between the transmission and reception fibers, and moving vertically to cut off or transmit the light beams, thereby controlling an amount of attenuation, the variable shutter cutting off the light to have a maximum amount of attenuation at an initial position, a comb actuator for driving the variable shutter, and a spring for generating a spring force to return the variable shutter to its initial position, the spring force not being applied in the initial position having the maximum amount of attenuation when a drive voltage of the comb actuator is not applied, and spring force being applied when the variable shutter is driven.