G01J 1/28

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Description

Class  G01J : MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY


Subclass 1/28: Photometry, e.g. photographic exposure meter (spectrophotometry G01J 3/00; specially adapted for radiation pyrometry G01J 5/00) by comparison with reference light or electric value intensity of the measured or reference value being varied to equalise their effects at the detector, e.g. by varying incidence angle using variation of intensity or distance of source (G01J 1/34 takes precedence)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12241826 Optical measurement instrument, server device, and optical measurement methodMar 19, 20Mar 04, 25Hitachi, Ltd.
9891427 Variable modulation of radiation and componentsNov 03, 16Feb 13, 18HALLIBURTON ENERGY SERVICES, INC.
9519133 Variable modulation of radiation and componentsAug 07, 12Dec 13, 16HALLIBURTON ENERGY SERVICES, INC.
8885157 Test apparatus, test method, and device interface for testing a device under test using optical signalingMar 04, 11Nov 11, 14ADVANTEST CORPORATION
7828478 Apparatus and method for thermal detectionMay 26, 05Nov 09, 10DELPHI TECHNOLOGIES, INC.
5432331 Method and apparatus for detecting focus of moving images with tilted plane detector and time delay meansJun 07, 94Jul 11, 95INTELLECTUAL VENTURES FUND 83 LLC

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