Invention Grant
US07079232B2 Focus detecting unit, and refractive index measuring apparatus and non-contact thermometer using the same
失效
聚焦检测单元，折射率测量装置和使用其的非接触式温度计
- Patent Title: Focus detecting unit, and refractive index measuring apparatus and non-contact thermometer using the same
- Patent Title (中): 聚焦检测单元，折射率测量装置和使用其的非接触式温度计
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Application No.: US10945098Application Date: 2004-09-21
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Publication No.: US07079232B2Publication Date: 2006-07-18
- Inventor: Mitsuru Namiki
- Applicant: Mitsuru Namiki
- Applicant Address: JP Tokyo
- Assignee: Olympus Corporation
- Current Assignee: Olympus Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kenyon & Kenyon LLP
- Priority: JP2003-330210 20030922
- Main IPC: G01N21/41
- IPC: G01N21/41 ; G01N21/00
Abstract:
The focus detecting unit includes, a light source unit emanating a collimated light, an optical unit to be inspected, which is equipped with a container having translucency, a lens and liquid, a deflection unit which irradiates a light to the unit to be inspected by diffracting a light from the light source, a spot position detecting means 4 arranged near a backside focus plane of the optical unit to be inspected, and an operating means which calculates the composite focal length of a lens and liquid in the optical unit to be inspected by using the spot position detected by the spot position detecting means.
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