CPC Subgroup
G02F 1/17 based on variable-absorption elements not provided for in groups G02F1/015 - G02F1/169
Full Title
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics > for the control of the intensity, phase, polarisation or colour (G02F1/29, G02F1/35 take precedence) > based on variable-absorption elements not provided for in groups G02F1/015 - G02F1/169
4 direct subcodes
Child Classifications
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