04770528 is referenced by 7 patents and cites 12 patents.

The present invention relates to an optical system of a radiation thermometer in which the measuring optical system and the finder optical system can be focused. The central portion of the sub-mirror in Cassegrainian type optical system is used as a finder lens of the finder optical system. The third mirror is located between the main and sub-mirrors in order to reflect the light passed through the central portion of the sub-mirror. The light reflected on the third mirror is used for finder observation.

Title
Optical system of a radiation thermometer
Application Number
632812
Publication Number
4770528
Application Date
April 21, 1987
Publication Date
September 13, 1988
Inventor
Tetsuyuki Tanimoto
Sakai
JP
Kenji Imura
Osaka
JP
Agent
Price Gess & Ubell
Assignee
Minolta Camera Kabushiki Kaisha
JP
IPC
G01J 5/48
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