The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 1990
Filed:
Feb. 08, 1989
Jiro Arima, Osaka, JP;
Hiroji Tsujimura, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A pyrometer according to the present invention calculates a temperature of a target to be measured by means of light emitting device for emitting reference light having three wavelengths to the target, and light measuring portions for measuring the intensity of the reference light, the intensity of light reflected by the target, the intensity of light transmitted through the target and the intensity of light radiated by the target, respectively with respect to each of the three wavelengths. The transmitted light measured value of the reference light transmitted through the target is used for temperature calculation in addition to the measured values of the reference light, the reflected light and the radiated light, and therefore even if the target is a semi-transparent object, the true temperature thereof can be calculated.