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Double-path laser projection equipment

A technology of laser projection and dual lasers, which is applied in the direction of using projection device image reproducers, color TV parts, electrical components, etc., can solve the problems of large-screen laser projection brightness and clarity reduction, and achieve large-screen projection Effects of brightness reduction, quality improvement, and projection brightness enhancement

Inactive Publication Date: 2021-06-01
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

[0006] This application provides a dual-channel laser projection device, which fundamentally solves the problem of decreased brightness and clarity in large-screen laser projection

Method used

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Embodiment Construction

[0016] The implementation of the design proposed in the application will be described in detail below with reference to the accompanying drawings.

[0017] Based on the existing laser projection device, this application proposes a two-way laser projection device, according to the attached figure 2 As shown, the application mainly includes dual laser groups 1 and 5, dual optical channel 6, dual DMD chips 4 and 8, dual channel lens 10, signal division control module 12, and dual DLP image display control modules 13 and 14.

[0018] Specifically, the laser groups 1 and 5 are independent of each other and are located in different optical channels 9, and the laser light passes through the optical components in the optical channel and irradiates on the double DMDs 4 and 8 respectively; wherein each DMD in the double DMDs 4 and 8 Composed of tens of thousands of micro-elements 22, the image information of each micro-element can reflect the laser light irradiated on the double DMD 4 ...

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Abstract

The invention discloses double-path laser projection equipment, which comprises a double-laser group, a double-optical-path channel, a double-DMD imaging chip, a double-channel laser lens and a signal control and processing module. Common laser projection or projection equipment completes picture display through a single DMD, and due to the fact that the DMD bears temperature and is limited by the technology, high-pixel and high-brightness display under a large screen cannot be completed. According to the double-path laser projection equipment provided by the invention, video and image signals are divided into a left half part and a right half part through an FPGA / DSP or other CPUs, the left half part and the right half part are respectively sent to a DLP1 chip and a DLP2 chip, the two chips respectively control two DMDs to complete image imaging of the left half part and the right half part, and images of the left half part and the right half part are transmitted in a double-channel lens and are synthesized into a complete picture to be projected on a screen. Each DMD is responsible for displaying half of an image, the resolution ratio is improved, the two DMDs are imaged at the same time, the chip can bear higher laser energy, and then the projection brightness of the whole machine is improved.

Description

technical field [0001] The invention belongs to the technical field of laser display, in particular to a two-way laser projection device. Background technique [0002] As a new generation of display technology, laser display technology has the characteristics of high color gamut and high brightness. At the same time, it supports large-screen display, but in order to keep the projection brightness unchanged while increasing the size of the projection screen, it is necessary to increase the energy emitted by the laser. Since the imaging chip DMD itself has a normal working temperature range, the emission of the laser is greatly improved. Energy will inevitably cause the actual temperature of the imaging chip to exceed the normal operating temperature, resulting in a system crash. At the same time, since the resolution supported by a single imaging chip DMD is fixed, the increase of a single projection size will lead to a decrease in image definition. At present, in order to ...

Claims

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Application Information

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IPC IPC(8): H04N9/31
CPCH04N9/3161
Inventor 李丽郑业双孔明陈丽敏
Owner QINGDAO UNIV OF SCI & TECH