Projector

Abstract

The invention discloses a projector, which comprises a light combination module, a light supply module, an image display module and a lens, and is characterized in that the light combination module comprises a first prism unit and a second lens unit; the light supply module comprises a first light source group and a second light source group; the image display module is used for generating a projection image; the lens is used for receiving an image which comes from the image display module and reflected by the light combination module; a gap is reserved between the first prism unit and the second lens unit of the light combination module, and surfaces, which are close to each other, of the first prism unit and the second lens unit are flat surfaces; the image display module and the second light source group are oppositely placed and respectively located at two sides of the light combination module; the lens and the first light source group are oppositely placed and respectively located at the other two sides of the light combination module respectively; the light combination module is used for transmitting and reflecting light from the first light source group and the second light source group so as to enable the light from the first light source group and the second light group to be projected to the image display module after being combined to perform modulation display; and the image displayed by the image display module is shot to the lens after being reflected by the light combination module.

Description

technical field [0001] The invention relates to the technical field of projection display, in particular to a projector. Background technique [0002] Most of the current miniature projection light machines adopt the DLP technology of Texas Instruments, and its main image and light control devices are generally called DMD light modulators. It is a micro-mirror array with extremely high reflectivity. It needs to cooperate with the illumination optical system and the projection optical system to convert the commonly used RGB three primary colors into a projection image that is easy to see for our eyes. One of the commonly used methods of combining the illumination optical system and the projection optical system is to use a total internal reflection element having a lens surface. [0003] At present, projectors generally use one light source as the projection light source. Although the structure is simplified, it also happens that only one light source is used in high-brightn...

AI Technical Summary

Problems solved by technology

[0003] At present, projectors generally use one light source as the projection light source. Although the structure is simplified, it also occurs that only one light source is used in a high-brightness environment, and the brightness cannot meet user needs, such as outdoor

The existing method of increasing brightness is to use fluorescent powder or fluorescent color wheel, which not only makes the structure more complicated, but also increases the volume of the projector, and also causes a large heat dissipation burden on the projector, which affects the service life

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