发明名称 |
Optical component, zinc sulfide sintered compact, and fabricating method thereof |
摘要 |
Zinc sulfide and an optical component are provided that significantly reduces transmission for visible light and infrared rays of not more than 3 mu m in wavelength, having high transmittance for infrared rays in the wavelength range of 8-12 mu m, and that shields visible light. The optical component is constituted by a polycrystalline zinc sulfide sintered compact formed by hot compression molding fine zinc sulfide powder of high impurity at the temperature of 900-1000 DEG C. and the pressure of 150-800 kg/cm2. The light transmittance at the region where the thickness is 2 mm is 0% to 3% at the wavelength range of visible light, 0% to 20% at the wavelength range of 2.5-3 mu m, 30% to 75% at the wavelength range of 8-12 mu m, and 50% to 90% at the same wavelength range with the formation of antireflection coating film.
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申请公布号 |
US6111689(A) |
申请公布日期 |
2000.08.29 |
申请号 |
US19990289718 |
申请日期 |
1999.04.12 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
SHIBATA, KENICHIRO |
分类号 |
G01J1/02;C04B35/547;G02B1/02;G02B5/22;G02B13/14;(IPC1-7):G02B13/14;G02B1/00;B29D11/00 |
主分类号 |
G01J1/02 |
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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