发明名称 |
DIFFRACTION GRATING ELEMENT |
摘要 |
<p>The prisent invention provides a diffraction grating element that allowsthe temperature control mechanism to be dispensed with or simplified. The diffraction grating element of the present invention comprises a transparent plate having a first surface and a second surface that are substantially parallel with one another; and a diffraction grating which is formed on a first surface side with respect to the second surface and is substantially parallel with the first surface. At any temperature within a temperature range -20 DEG C to +80 DEG C, the sum of the rate of change in the period per unit length of the diffraction grating with respect to a temperature change, and the temperature coefficient of the refractive index of a medium that surrounds the diffraction grating element is 0.</p> |
申请公布号 |
WO2004066003(A1) |
申请公布日期 |
2004.08.05 |
申请号 |
WO2004JP00558 |
申请日期 |
2004.01.22 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD.;SHIOZAKI, MANABU;SHIGEHARA, MASAKAZU |
发明人 |
SHIOZAKI, MANABU;SHIGEHARA, MASAKAZU |
分类号 |
G02B5/18;G02B6/34;(IPC1-7):G02B5/18;G02B6/16 |
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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