Housing for temperature measuring apparatus

Details Housing for temperature measuring apparatus Housing for temperature measuring apparatus

1991-11-21

1993-05-18

Cuchlinski, Jr., William A.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374144, 374208, G01J 502

Patent

active

052114783

ABSTRACT:
A light guide has a window through which radiation passes to a detector. The light guide is provided with a housing which defines a duct through which a flow of cooling fluid passes. The duct is arranged so that a proportion of the fluid flow passes over the external surface of the window to prevent deposition of contaminants thereon. A circumferential shield extends around the window to control the flow of radiation therethrough. The circumferential shield has a curved radial recess therein which imparts a rotational component of velocity to the flow of fluid passing over the surface of the window to promote cooling of the shield. The shield is further provided with an annular internal step which prevents radiation reflected from the inner wall of the shield passing through the shield.

REFERENCES:
patent: 1318516 (1919-10-01), Wallis et al.
patent: 3584509 (1971-06-01), Comptor et al.
patent: 4650318 (1987-03-01), Pointer et al.
patent: 4657385 (1987-04-01), Pointer
patent: 4738528 (1988-04-01), Craft
patent: 4786188 (1988-11-01), Myhre
patent: 4836689 (1989-06-01), O'Brien et al.
patent: 4986672 (1991-01-01), Beynon

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