发明名称 |
OPTICAL INSTRUMENT AND OPTICAL ELEMENT THEREOF |
摘要 |
An optical instrument is described in which a diffractive element (25) is located at a focal or image plane (3) of the instrument and the diffractive element (25) is effective to produce an array (6) of a plurality of exit pupils at a viewing position for the instrument and thereby to form an enlarged exit pupil for the instrument. The diffractive element is formed to provide a plurality greater than two of optical diffractive gratings each being disposed angularly relative to others of the plurality of optical diffractive gratings. |
申请公布号 |
CA2275819(A1) |
申请公布日期 |
2000.12.21 |
申请号 |
CA19992275819 |
申请日期 |
1999.06.21 |
申请人 |
FREEMAN, ROBIN JOHN |
发明人 |
FREEMAN, ROBIN JOHN |
分类号 |
G02B5/18;G02B21/00;G02B27/44;(IPC1-7):G02B27/02;G02B27/42 |
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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