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发明授权
CN1601244B 焦点检测单元和使用其的折射率测定装置与非接触温度计 失效 - 权利终止

焦点检测单元和使用其的折射率测定装置与非接触温度计
摘要：
本发明提供一种焦点检测单元和使用其的折射率测定装置与非接触温度计，该焦点检测单元具有：射出准直光的光源单元；由具有透光性的容器和设置在该容器内的透镜以及液体所构成的被测光学单元；将来自上述光源单元的光衍射并照射到上述被测光学单元的照射部件；配置在上述被测光学单元的后侧焦平面附近、检测通过透过上述被测光学单元所形成的光斑位置的光斑位置检测部件；使用该光斑位置检测部件检测出的光斑位置计算上述被测光学单元的透镜与液体的合成焦点距离的运算部件。
摘要（英）：

This focal point detection unit has a light source unit for emitting a collimated light, an inspection optical unit comprising a translucent vessel, a lens provided on the vessel and liquid, an irradiation means for diffracting the light from the light source unit 1 and irradiating the inspection optical unit therewith, a spot position detecting means arranged near the rear-side focal plane of theinspection optical unit, for detecting the spot position formed by transmission of the light through the inspection optical unit, and an operation means for calculating the composite focal distance ofthe lens and the liquid in the inspection optical unit, by using the spot position detected by the spot position detecting means.

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