Projection system and AR display device
A projection system and component technology, applied in optics, instruments, projection devices, etc., can solve the problems of high price, low comfort and difficulty of AR display equipment, reduce space volume, realize miniaturization development, and simplify light source structure Effect
Pending Publication Date: 2020-09-22
LIGHTIN INC
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[0026] At present, in the projection light machine of the conventional AR display device, the light is output by the projection light source, after being repeatedly modulated by multiple lenses or other optical devices, it is incident on the LCOS image source, and reflected by the LCOS image source to output the light carrying image information. The projection beam, the optical path of the entire projection light machine is complex and the optical path is long, which greatly increases the space volume required by the projection light machine, thereby increasing the space volume of the AR display device, which is not conducive to the small size of the AR device development.
[0027] For this reason, the present application provides a technical solution capable of reducing the spatial volume of the light projection machine, which is beneficial to the miniaturization of the light projection machine and the AR device to which the light projection machine is applied.
[0028] In or...
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The invention discloses a projection system, which comprises: a self-luminous image source, a light condensing lens arranged on the output light path of the self-luminous image source, a polarizationbeam splitter arranged on the output light path of the light condensing lens, a polarization conversion element arranged on the output light path of the polarization beam splitter, and a curved surface light reflection element arranged on the emergent light path of the polarization conversion element, wherein after divergent light of the self-luminous image source is converged by the light condensing lens, the light sequentially passes through the polarization beam splitter and the polarization conversion element and enters the curved surface light reflection element to be converted into parallel light to be output. The invention discloses a projection system, which is provided with the self-luminous image source with the light-emitting function, and adopts the matching action of the lightcondensing lens, the polarization beam splitter, the polarization conversion element and the curved surface light reflection element to convert the divergent light of the self-luminous image source into parallel light to be output so as to reduce the space volume occupied by the light path of the projection system and facilitate miniaturization development of the projection system and AR displayequipment.
Description
technical field [0001] The present invention relates to the technical field of projection equipment, in particular to a projection system and an AR display equipment. Background technique [0002] Augmented reality (AR, Augmented Reality) is a technology that increases users' perception of the real world through the information provided by the computer system, applies virtual information to the real world, and superimposes computer-generated virtual objects, scenes or system prompts on the real world. In the scene, so as to realize the enhancement of reality. [0003] AR is usually implemented in the form of a see-through helmet or glasses display system. In order to better user experience and improve the comfort of users wearing AR head-mounted devices, AR head-mounted display devices are required to be lightweight and miniaturized. The projection light machine used to project information in existing AR display devices is complex in design and expensive, making it difficul...
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Login to View More IPC IPC(8): G03B21/20G02B27/01
CPCG02B27/0101G03B21/2066G03B21/2073
Inventor 孔玉微丁毅魏一振张卓鹏
Owner LIGHTIN INC