An optional multi-light source lighting device

Abstract

The invention discloses a selectable multiple light source illumination device which comprises a first light source module, a second light source module and at least one rotatable reflecting mirror array, wherein each rotatable reflecting mirror array comprises at least one reflecting optical element and at least two working positions; a beam emitted by the first light source module is subjected to penetration emitting when the rotatable reflecting mirror array is rotated to the first working position; and a beam emitted by the second light source module is subjected to reflecting emergency when the rotatable reflecting mirror array is rotated to the second working position. According to the selectable multiple light source illumination device, the rotatable reflecting mirror array is arranged between multiple light sources, and the required light source is selected from the multiple light sources for the reflecting emergency or the penetration emitting by rotation of the reflecting mirror array, so that the selectable multiple light source illumination device is simple in structure, small in size and flexible to use, and more choices are provided for a user.

Description

technical field [0001] The invention relates to a light source, in particular to a selectable multi-light source lighting device. Background technique [0002] A light-emitting diode (Light Emitting Diode, LED) is a light-emitting device made of semiconductor materials such as gallium phosphide (GAP) and gallium nitride (GAN), which can directly convert electrical energy into light energy. Due to its high luminous efficiency, long life, sensitive response, and no toxic substances, it is used more and more widely, such as: stage lighting, liquid crystal projection, mobile phone backlight, display screen, etc. [0003] At present, the existing lighting devices are often equipped with only one light source: either a monochromatic light source or a white light source. Among them, there are many ways to realize the white light source. One of the methods is to use multiple monochromatic lights to mix together to produce white light. , For example: a three-wavelength white LED tha...

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Problems solved by technology

[0003] At present, the existing lighting devices are often equipped with only one light source: either a monochromatic light source or a white light source. Among them, there are many ways to realize the white light source. One of the methods is to use multiple monochromatic lights to mix together to produce white light. , For example: a three-wavelength white LED that uses red, green, and blue LED chips at the same time. This white light source is used as a lighting source. Although the color is rich, it is affected by the luminous efficiency of the current single-color LED. Low and lacks wavelengths required in some industrial applications in addition to the dominant wavelength of the LED used, such as yellow, amber, etc.

Another method is to use a blue LED chip with a phosphor to produce white light, that is, the blue light emitted by the blue LED chip excites the phosphor to emit light in other bands, and is combined with a part of the blue light that passes through the phosphor to form white light. Although this light source is white The field brightness is high, but its color is too single, and the color rendering index is not high, generally only 70-75

However, if you want to use different light sources, you can only configure different lighting devices to be used in combination, which is expensive and inflexible. In addition, in some occasions, such as stage lighting, it is desirable to use other colors in addition to white light lighting. Lighting to enrich the stage effect

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