发明名称 |
Photosensor and image scanner utilizing the same. |
摘要 |
<p>A photosensor (20a) has a pair of n-type semiconductor layers (21U, 21D) formed on the major surface of a p-type semiconductor substrate (31). A light-shielding pattern (24) comprised of unit light-shielding layers (33) is formed on the major surface of the substrate. When the major surface is scanned by a light beam in the direction (DX) in which the unit light-shielding layers are aligned, a couple of photo-conversion signals indicating a current position of the light beam on the photosensor are generated in the photosensor. Since the light-shielding pattern is directly provided on the sensor body, no grating glass is required other than the photosensor. <IMAGE></p> |
申请公布号 |
EP0446812(A2) |
申请公布日期 |
1991.09.18 |
申请号 |
EP19910103607 |
申请日期 |
1991.03.08 |
申请人 |
DAINIPPON SCREEN MFG. CO., LTD. |
发明人 |
KISHIDA, YOSHIHIRO, DAINIPPON SCREEN MFG. CO. LTD. |
分类号 |
H04N1/028;H01L27/14;H04N1/047;H04N1/113;H04N1/12 |
主分类号 |
H04N1/028 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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