BRIGHTNESS METER Russian patent published in 2015 - IPC G01J1/36 G02F7/00 G06T9/00 

FIELD: instrumentation.

SUBSTANCE: brightness meter contains an opaque light filter attached to a piezoelectric element which is connected to a frequency divider output, a lens, a pyramidal mirror octahedron with four external smooth surfaces and four disk photodetectors, each with two photoreception sectors. Photoreception sectors are fitted with colour light filters. The output of each photoreception sector is connected to the input of an analogue-digital converter. Each analogue-digital converter comprises the pulse amplifier to the output of which pulse light-emitting diodes are connected. Radiation from each light-emitting diode enters the group of eight identical photodetectors, each of which has on the reception side a neutral light filter with a ratio respectively of the register digit weight to which the output of each photodetector is connected.

EFFECT: possibility of synchronous receiving of brightness codes of eight colour components of the spectrum.

2 dwg, 1 tbl