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A small projection module

A projection module, small technology, applied in the field of projection, can solve the problems of large light angle loss, large energy loss of the projection module, low luminous flux, etc.

Active Publication Date: 2021-04-09
广西佳微科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a small projection module to solve the technical problems of large energy loss, large light angle loss and low luminous flux in existing projection modules

Method used

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0022] see figure 1 , the present invention provides a small projection module, comprising a light source 1, a reflective cup 2, a double-layer condensing film 3, a microlens array 4, an imaging screen 5, an imaging lens 6, a reflector 7 and a lens 8, the reflective cup 2 Set on the light source 1, the double-layer light-condensing film 3 is set at the light exit of the reflective cup 2, the microlens array 4 and the imaging screen 5 are arranged on the rear side...

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Abstract

The invention discloses a small projection module, which belongs to the field of projection technology, and comprises a light source, a reflective cup, a double-layer light-condensing film, a microlens array, an imaging screen, an imaging lens, a reflective mirror and a lens. The first layer of light-condensing film is arranged at the light exit of the reflective cup, the microlens array and the imaging screen are arranged on the rear side of the double-layer light-condensing film in turn, and are arranged in parallel with the double-layer light-condensing film, and the imaging lens is arranged on the back side of the imaging screen , and parallel to the imaging screen. Increase the reflective area of ​​the reflective cup through LED array light source, double-layer light-concentrating film and micro-lens array, use small-sized multi-array LEDs to reduce the volume of the uniform light part, and use DF+DBEF microstructure film to reintegrate the light to achieve The same light effect can be achieved under the premise of lower cost and smaller volume.

Description

technical field [0001] The invention relates to the field of projection technology, in particular to a small projection module. Background technique [0002] The projection module is an electronic device for providing images on a projection target so that viewers can watch the images. Generally speaking, a conventional projection module includes a light source and an optical unit, and the light from the light source is projected on the projection target after passing through the optical unit. Generally, the traditional projection module is a single device for projection, and can only perform a single projection along a specific direction, and does not have the function of projecting in multiple directions. However, with the development of technology, the volume of the projection module is getting smaller and smaller. The projection module can no longer be used as a single device, but can be embedded in handheld devices, such as mobile phones, tablet computers, positioning d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20
Inventor 李栋王鸣
Owner 广西佳微科技股份有限公司
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