Solid imaging device integrated with optical low-pass filter

Application Number: 00120455
Application Date: 2000.07.10
Publication Number: 1297161
Publication Date: 2001.05.30
Priority Information: 1999/11/17 KR 51028/1999
International: G02B27/46
Applicant(s) Name: Harvit Co., Ltd.
Inventor(s) Name: Lee Jae-Cheol;Leim Sung-Wu;Go Chun-Soo
Patent Agency Code: 11038
Patent Agent: ma gao
Abstract There is provided a solid-state imaging device into which an optical low pass filter serving as the transparent window thereof is integrated. This integrated structure simplifies the configuration of the imaging system, reducing its size and manufacturing cost. The optical low pass filter is configured of an optical phase grating low pass filter to obtain satisfactory frequency characteristics. The optical low pass filter is constructed in such a manner that a grating with a predetermined thickness, generating the phase shift of phi , a grating whose thickness is twice the phi -phase shift grating, generating the phase shift of 2 phi , and a grating portion generating the phase shift of 0 form a basic pattern, the basic pattern being periodically arranged.