发明名称 |
Optical low pass filter |
摘要 |
An optical low pass filter including a phase grating for obtaining useful picture image characteristics by provision of preferable low pass effects for each of wave form zones about the spatial frequency components beyond Nyquist limit which are required to be removed as the picture images are discretely sampled in nature in an optical system of a single tube color television camera having a color separating filter, a color video camera using solid state imaging elements, and so on, which is easier in construction to be constructed.
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申请公布号 |
US5375013(A) |
申请公布日期 |
1994.12.20 |
申请号 |
US19930054134 |
申请日期 |
1993.04.30 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD. |
发明人 |
OKAYAMA, HIROAKI;ONO, SHUSUKE |
分类号 |
G02B5/18;G02B27/46;H04N5/225;H04N9/07;(IPC1-7):G02B5/04 |
主分类号 |
G02B5/18 |
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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