发明名称 |
Optical system comprising a diffractive optical element, and method of designing the same |
摘要 |
The invention relates to a method of easily and quantitatively determining the diffraction efficiency of a relief type diffraction optical element, and provides a method of designing an optical system comprising a diffractive optical element using diffraction efficiency as at least one estimation index. The diffractive optical element is a transmission blaze grating constructed of a relief having a sawtooth shape in section. The transmission blaze grating having a side wall substantially vertical to a grating surface. The estimation index is given by a predetermined mathematical expression including at least a phase difference due to a relief discontinuity and shadow effects thereof. The mathematical expression includes as the shadow effects of said discontinuity at least a light attenuation effect dependent on an angle-of-incidence and a light attenuation effect independent on the angle-of-incidence in a separate manner.
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申请公布号 |
US2001043397(A1) |
申请公布日期 |
2001.11.22 |
申请号 |
US20010840867 |
申请日期 |
2001.04.25 |
申请人 |
ISHII TETSUYA |
发明人 |
ISHII TETSUYA |
分类号 |
G02B5/18;G02B27/44;(IPC1-7):G02B27/44 |
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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