G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
Introduced: September 1968
Last revised: July 1974
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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.
Scope Notes
Limiting references: Non-optical measurement of temperature Semiconductor devices sensitive to light , , | Application references: Measuring length, thickness or similar linear dimensions by optical means; Instruments therefor , Investigating or analysing materials by optical means, e.g. by ellipsometry Prospecting or detecting by optical means Controlling or varying light intensity, spectral composition or exposure time in photographic printing apparatus Exposure in photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces
Related Keywords
7 direct subcodes
Child Classifications
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- G01J 1/00 Photometry, e.g. photographic exposure meter
- 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; Determining degree of coherence; Measuring optical wavelength