Double-lens split-screen light splitting optical path and optical equipment

A dual-lens, light-splitting technology, applied in optics, optical components, instruments, etc., can solve problems such as brightness loss, large volume, and complex mass production process
CN112526751APending Publication Date: 2021-03-19深微光电科技(深圳)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
深微光电科技(深圳)有限公司
Publication Date
2021-03-19

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Abstract

The invention relates to a double-lens split-screen light splitting optical path which comprises a chip, a prism, an image transferring lens, a main lens, a split-screen reflector, a steering reflector and an auxiliary lens. The image transferring lens is added at the light emitting position of the prism, an effective display area of a chip is imaged in air on the other side of the image transferring lens, a reflecting mirror is used near the position of a real image to reflect one part of the real image into a light path of a second lens, a screen splitting effect is achieved, and other lightrays pass through the first imaging lens according to an original light path. The chip can realize the overlapping of two scenes at the screen only by displaying respective contents in the corresponding areas, thereby being beneficial to improving the final projection brightness, reducing the cost of optical and electronic components, canceling a polarization modulation optical path, and being small in size and easy for mass production.
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Description

technical field

[0001] The invention relates to the technical field of double-lens split-screen light splitting, and more specifically, to a double-lens split-screen light path and optical equipment. Background technique

[0002] In similar AR HUD and 3D projection displays, two different lenses are generally required to project different scene contents respectively, and finally overlapped together to produce the effect of virtual reality.

[0003] At present, the existing solution in AR HUD is to use two display chips, one is DMD or LCOS, and the other is LCD. The two chips share part of the optical path to project scenes with different object distances. Similar patents such as: CN109471262A. The LCD display chip is directly used as a light source, and the divergence angle is very large. Most of the light cannot be collected into the imaging system, resulting in a huge loss of brightness. At the same time, the use of the two chips also increases the complexity of the circ...

Claims

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