LIGHTING DEVICE AND PROJECTOR Russian patent published in 2018 - IPC G03B21/14 

FIELD: lighting.

SUBSTANCE: lighting device contains a light source device, rotating angle plate that including a first surface with a dissipation section on it and a second surface, detection section, located at least on one of the first surface and a second surface, and supplied with the light from the light source device, light collecting optical system, supplied with light by dissipation section, detector made with the ability to detect the light from the detection section and control unit, made with the ability to control the light in accordance with the output signal from the detector, wherein the detection section is in position different from the position in which the light from the light source device is included in the dissipation section. The projector contains a lighting device described above, light modulating device made with the ability to modulate light lighting according to the images, and projection optical system with opportunity to project light images.

EFFECT: ensuring high reliability.

15 cl, 19 dwg