IPC Definitions - January 01, 2012
G01J - Definition
This subclass covers:
Photometry, e.g. photographic exposure meters, per se (covered by G01J 1/00).
Spectrometers and spectroscopy, e.g. measurement of the spectral content of incident light and spectroscopic methods used in this process (covered by G01J 3/00).
Colorimetry (covered by G01J 3/00).
Polarimeters and polarimetry, e.g. passive measurement of the state of polarisation of incident light (covered by G01J 4/00).
Measurement of temperature by optical means, e.g. remote detection of infrared radiation, non-contact measurement (covered by G01J 5/00).
Measurement of the velocity of light (covered by G01J 7/00).
Measurement of optical phase differences, e.g. wave-front or coherence measurements (covered by G01J 9/00).
Measurement of the wavelength of incident light (covered by G01J 9/00).
Measurement of the characteristics of optical pulses (covered by G01J 11/00).
Detection of the presence or absence of infra-red, visible, or ultra-violet light, not otherwise provided for.
Relationship between large subject matter areas
G01J relates in general to the passive optical detection per se of the quantities referred to in the Definition Statement. Arrangements or methods in a specific related field are to be found in their environment.
References relevant to classification in this subclass
This subclass does not cover:
Non-optical measurement of temperature | G01K |
Semiconductor devices sensitive to light | H01L 27/14, H01L 31/00, H01L 51/42 |
Measuring length, thickness or similar linear dimensions by optical means; Instruments therefor | G01B 11/00, G01B 9/00 |
Investigating or analysing materials by optical means, e.g. by ellipsometry | G01N 21/00 |
Prospecting or detecting by optical means | G01V 8/00 |
Controlling or varying light intensity, spectral composition or exposure time in photographic printing apparatus | G03B 27/72 |
Exposure in photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces | G03F 7/20 |
Attention is drawn to the following places, which may be of interest for search:
Apparatus for testing or examining the human eyes | A61B 3/00 |
Colour determination, selection, or synthesis in painting or artistic drawing, e.g. use of colour tables | B44D 3/00 |
Indicating or recording measured values in general | G01D |
Testing of optical apparatus | G01M 11/00 |
Sunshine-duration recorders | G01W 1/12 |
Optical elements, systems or apparatus, e.g. filters, gratings, lenses | G02B |
Control of light by devices or arrangements the optical operation thereof is modified by changing the optical properties of the medium of the devices or arrangements | G02F 1/00 |
Control of light, e.g. intensity, colour, phase | G05D 25/00 |
Mass spectrometers | H01J 49/00 |
Thermoelectric elements per se | H01L 35/00, H01L 37/00 |
Lighting | F21 |
Discharge lamps | H01J 61/00, H01J 63/00, H01J 65/00 |
Electric incandescent lamps | H01K |
Semiconductor devices for light emission, e.g. LED's | H01L 27/15, H01L 33/00, H01L 51/50 |
Lasers | H01S 3/00, H01S 5/00 |
Electric arc lamps | H05B 31/00 |
Electroluminescent light sources | H05B 33/00 |