G01J1/30 - CPC Classification Index

ClassID:

165862 ⎘

G01J1/30 - CPC Classification

Classification description:

Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors

Sub-classes:

G01J1/32 » adapted for automatic variation of the measured or reference value 357

Recent Application in this class:

20250369799

BACKGROUND-BASED CORRECTION OF PHOTODETECTOR DRIFT

20230033014

OPTICAL MEASURING DEVICE, OPTICAL MEASURING METHOD, DATA PROCESSING DEVICE, AND PROGRAM

20200400493

Automated delay line alignment

20180347797

Light emitting diode sensor device including a contoured structure

20180245977

Automated delay line alignment

20170264690

Low-voltage alternating current-based LED light with built-in cooling and automatic or manual dimming

20170193920

Display device displaying a plurality of patterns receiving luminance and color coordinates data for said patterns from an external user device

20170131140

Non-contact methods of measuring insertion loss in optical fiber connectors

20160058278

Optical coupling efficiency detection

20160033325

Non-contact methods of measuring insertion loss in optical fiber connectors

20100134791

METHOD AND APPARATUS FOR MEASURING OPTICAL POWER OF A LIGHT BEAM PRODUCED IN A MICROSCOPE

20080111079

Method for stabilizing the temperature dependency of light emission of an LED

20070295912

Method for Stabilizing the Temperature Dependency of Light Emission of an Led

20060118705

Apparatus and method for adjusting amount of light emitted by registration sensor

20050263680

Method for stabilizing the temperature dependency of light emission of an LED

16532062

Thermopile bias method for low voltage infrared readout integrated circuits