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Mini projection module

A projection module and small-scale technology, applied in the field of projection, can solve the problems of low luminous flux, large loss of light angle, and large energy loss of projection modules, etc., achieve low integration, increase luminous flux, improve long-term reliability and product quality.

Active Publication Date: 2019-06-04
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 mini projection module, and belongs to the technical field of projection. The mini projection module comprises a light source, a reflection cup, a double-layer focusing film,a microlens array, an imaging screen, an imaging lens, a reflector and a lens, the reflection cup is arranged on the light source, the double-layer focusing film is arranged in a light outlet of thereflection cup, the microlens array and the imaging screen are arranged behind the double-layer focusing film successively and in parallel with the double-layer focusing film, and the imaging lens isarranged behind the imaging screen and in parallel with the imaging screen. An LED array light source, the double-layer focusing film and the microlens array increase the reflection area of the reflection cup, multiple array LEDs in small size are used to reduce the size of a dodging part, a DF+DBEF micro structure film is used to rearrange the light, and the same light efficacy is realized on thepremise of lower cost and smaller size.

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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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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