Dimmable light emitting diode (LED) integrated optical source based on annular distribution

Abstract

The invention discloses a dimmable light emitting diode (LED) integrated optical source based on annular distribution. The dimmable LED integrated optical source based on the annular distribution comprises a substrate, wherein regular geometric figure areas are arranged on the substrate and are divided into different annular areas with the same center, annular areas included in a cool white optical source area and annular areas included in a warm white optical source area are arranged alternately from inside to outside, LED chips in the cool white optical source area are in electrical connection with a first controllable power supply unit arranged outside, and LED chips in the warm white optical source area are in electrical connection with a second controllable power supply unit arranged outside. According to the dimmable LED integrated optical source based on the annular distribution, a single-body LED optical source is constructed in a mode of combination by different areas, the areas are distributed evenly and alternately, the light emitting effect is even, and color temperature of the whole optical source can be controlled and enabled to be continuously adjustable; the areas are closely arranged with no spacing basically, and therefore a lens can be arranged on the light-emitting surface of the optical source for light condensation, and requirements of a film and television shoot optical source are met; the area division method is suitable for wiring; and light emitting power can reach to dozens of watts or even hundreds of watts.

Description

technical field [0001] The invention relates to a single LED light source product, in particular to a dimmable LED integrated light source. Background technique [0002] The color temperature of traditional film and television lighting is a single design, which is related to the principle of the light source. The light source itself can only emit a single color temperature from 2700K to 6400K according to the principle of light source at the time of design, and cannot achieve from low-end (3000K) to high-end ( 6000K) continuously adjustable. [0003] LED tri-primary color (RGB) color mixing method realizes the function of continuously adjustable color temperature and color through some technical means, but this solution has low efficiency and complicated driving circuit, so it cannot be used for film and television shooting. [0004] At present, there is a scheme to realize continuous color temperature adjustment by using high and low color temperatures. The specific method...

AI Technical Summary

Problems solved by technology

On film and television lamps that require spotlight processing, the uneven color of the light source is reflected in the effective light spot when spotlighting, which will cause color unevenness or color distortion on the video screen, seriously affecting the effect of film and television shooting

Therefore, the lamps realized by this scheme are not suitable for professional film and television lighting

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