G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N)
Description
G01J encompasses instruments and methods for measuring physical properties of electromagnetic radiation in the infrared, visible, and ultraviolet wavelength ranges. The subclass covers intensity measurement, spectral analysis, polarization characteristics, phase determination, and temporal pulse properties of light, as well as colorimetric analysis and radiation pyrometry for non-contact temperature measurement. Applications include spectrophotometers, photometers, spectrographs, polarimeters, interferometers, and thermal imaging systems used in scientific research, manufacturing quality control, and materials characterization.
7 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G01J 1/00 Photometry, e.g. photographic exposure meter (spectrophotometry G01J3/00; specially adapted for radiation pyrometry G01J5/00 )
- G01J 11/00 Measuring the characteristics of individual optical pulses or of optical pulse trains
- G01J 3/00 Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J 4/00 Measuring polarisation of light
- G01J 5/00 Radiation pyrometry, e.g. infrared or optical thermometry
- G01J 7/00 Measuring velocity of light
- G01J 9/00 Measuring optical phase difference (devices or arrangements for controlling the phase of light beams G02F1/01); Determining degree of coherence; Measuring optical wavelength (spectrometry G01J3/00)
Top Applicants
Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 21,460
- ROBERT BOSCH DE 17,801
- SGCC(STATE GRID CORPORATION OF CHINA) 17,347
- SAMSUNG ELECTRONICS COMPANY KR 13,192
- QUALCOMM US 9,900
- HALLIBURTON ENERGY SERVICES GROUP US 9,742
- PHILIPS ELECTRONICS NL 7,249
- MITSUBISHI ELECTRIC CORPORATION JP 6,503
- ZHEJIANG UNIVERSITY 6,414
- DENSO CORPORATION JP 6,382