Optical system of a radiation thermometer

Details Optical system of a radiation thermometer Optical system of a radiation thermometer

1987-04-21

1988-09-13

Rosenberger, R. A.

Optics: measuring and testing

Optical pyrometers

350444, 374130, G01J 548

Patent

active

047705280

ABSTRACT:
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.

REFERENCES:
patent: 778694 (1904-12-01), Mustin
patent: 2761720 (1956-08-01), Wormser
patent: 2813203 (1957-11-01), Machler
patent: 2869369 (1959-01-01), Howell
patent: 3064526 (1962-11-01), Lindsay
patent: 3187574 (1965-06-01), Mason et al.
patent: 3411852 (1968-11-01), Marinozzi
patent: 4664515 (1987-05-01), Imura et al.

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