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:
Feb. 19, 2002
Filed:
Dec. 18, 2000
Yasunori Igasaki, Hamamatsu, JP;
Narihiro Yoshida, Hamamatsu, JP;
Haruyoshi Toyoda, Hamamatsu, JP;
Tsutomu Hara, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu, JP;
Abstract
A signal image is transmitted by write light from a transmission type liquid crystal element to an optically-addressed type parallel-aligned nematic-liquid-crystal spatial light modulator . The numerical aperture NA of a relay lens , the pitch P of the pixel structure of the transmission type liquid crystal element , and the wavelength &lgr; of light from the write light source are set with the condition 1/2P<NA /&lgr;<1/P. As a result, the signal component caused by the pixel structure can be erased. Furthermore, no degradation is generated in the entire range of the spatial frequencies of the signal image that can be produced by the transmission type liquid crystal element