Light source device, light source generation method and laser projector comprising light source device

Abstract

The invention discloses a light source device, a light source generation method and a laser projector comprising the light source device. The light source device comprises light sources comprising a first light source, a second light source and a third light source which are provided with different main wavelengths; the light source device further comprises collimation part, a reflection part, a convergency and refection part, a convergency part and a dichroic part, wherein the collimation part is positioned on emergent sides of the first and the third light sources and is used for aligning the received light sources; the reflection part is used for reflecting the aligned first light source to the convergency and refection part; the convergency and refection part is used for reflecting the first light source reflected by the reflection part and converging the aligned third source; the convergency part is used for converging the first and the third light sources; and the dichroic part is used for leading the second light source plus the first and the third light source from the convergency part to be incident into a light receiving part in the same direction. By adopting the light source device, the number of parts in the light source device can be effectively reduced, a light path is simplified, the energy utilization rate is increased, and the mounting and the maintenance are simple.

Description

technical field [0001] The invention relates to laser projection technology, in particular to a light source device, a method for generating a light source and a laser projector including the light source device. Background technique [0002] In recent years, laser projectors have been widely used in various occasions due to their simple principle, low manufacturing difficulty, rich colors, and small visual impact, such as TV projection, miniature projection, and some commercial and entertainment systems. [0003] As we all know, an optical picture needs to be composed of at least light waves of different dominant wavelengths, such as blue, green and red light waves. Based on the current technology, usually a light source of one wavelength is used as excitation light to generate a light source of another wavelength, and then time-shared emission with light sources of other wavelengths to display various images on the projection screen. For example, the blue laser emitted by...

AI Technical Summary

Problems solved by technology

[0012] Although the above-mentioned existing light source device enables laser projection to be realized, from figure 1 It can be found very intuitively that there are too many optical components and the optical path is too long in the light source device.

Every time the beam passes through an optical component, it will lose some energy, and the length of the optical path will also affect the energy loss of the beam

Therefore, each light source is figure 1 After transmission in the light source device shown, the energy will be greatly reduced, and the energy utilization rate is low

[0013] Moreover, in the existing light source device, the number of optical components is large, resulting in a relatively complex overall structure, and the volume will be correspondingly large

Such a light source device obviously cannot meet the increasingly obvious miniaturization requirements

[0014] In addition, in order to ensure the normal operation of the light source device, it is necessary to ensure the correctness of the installation position and relative position of each optical component, which is difficult to assemble; when an optical component fails, the problem cannot be found in a short time, and the maintenance is difficult high

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