Optical engine and projector
An optical engine and optical surface technology, applied in optics, instruments, projection devices, etc., can solve the problems of large size and large installation space of projectors, and achieve the effect of small size
Pending Publication Date: 2019-08-27
成都晶华光电科技股份有限公司
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- Claims
- Application Information
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Problems solved by technology
[0003] However, each optical element of the optical engine in the existing projector is arranged in an L shape, which requires a large installation space for the optical engine of the projector, which in turn leads to a relatively large overall volume of the projector.
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0031] It should be noted that the descriptions involving "first", "second" and so on in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of...
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The invention discloses an optical engine and a projector. The optical engine comprises a lighting unit, an imaging unit, a lens unit, a polarization unit and an LCOS chip, wherein the imaging unit ismounted on a light emerging side of the lighting unit; the lens unit is mounted between the lighting unit and the imaging unit, and provided with a caustic surface facing towards the lighting unit, an optical surface facing towards the imaging unit, and a reflective surface located on the same side of the caustic surface and the optical surface; light emitted by the optical surface and the lighting unit forms an included angle; the polarization unit is mounted between the lens unit and the imaging unit, and provided with a polarization surface facing towards the imaging unit; an included angle between the polarization surface and the optical surface is greater than 0 degree; and the LCOS chip is mounted between the polarization unit and the imaging unit, and reflects light transmitting the polarization surface to the polarization surface to allow the light reflected by the LCOS chip to be reflected by the polarization surface to the imaging unit. With the adoption of the arrangement,the structural dimension of the optical engine is reduced, and the size of the projector is further reduced.
Description
technical field [0001] The invention relates to the technical field of projection equipment, in particular to an optical engine and a projector. Background technique [0002] Existing projectors generally include a housing and an optical engine installed in the housing. The optical engine includes a light source, a condensing lens, a reflector, a dodging sheet, an imaging prism, an LCOS chip (Liquid Crystal on Silicon, liquid crystal attached silicon) and Lens, wherein the condenser lens is installed on the light emitting side of the light source, the light homogenizing sheet is installed on the light emitting side of the condenser lens, and the polarizer is installed on the light emitting side of the light uniform sheet, and the polarization plane of the polarizing sheet is in a 45-degree angle to the light Angle setting, the LCOS chip is installed on one side of the polarizer and is used to receive the light reflected by the polarizer, and the LCOS chip deflects the light ...
Claims
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Login to View More IPC IPC(8): G03B21/20
CPCG03B21/2073G03B21/2066G03B21/20
Inventor 郭佳
Owner 成都晶华光电科技股份有限公司