阅读说明：本技术 一种三片式投影装置 (three-piece type projection device ) 是由 蔡静 于 2019-10-12 设计创作，主要内容包括：本发明涉及投影显示技术领域,公开了一种三片式投影装置,用以解决目前三片式投影设备难以处理画面轮廓上出现“单色描边”的问题。本发明包括音视频处理单元、光阀、合束器、投影镜头、数字光控单元、致动器驱动器以及至少两个致动器,所述光阀包括红光光阀、绿光光阀和蓝光光阀,各个致动器均单独设置在红光光阀与合束器之间的光路上、绿光光阀与合束器之间的光路上或则蓝光光阀与合束器之间的光路上,各个致动器均包括一个可偏转的平板镜片,平板镜片用于透射由光阀射向合束器的光线,平板镜片可在致动器驱动器驱动下,沿光轴方向偏转一定角度,使得由平板镜片透射的光线平移一段距离。本发明适用于三片光阀式投影设备。(The invention relates to the technical field of projection display, and discloses a three-piece type projection device which is used for solving the problem that the existing three-piece type projection equipment is difficult to process 'monochrome trailing' on a picture outline. The light valve comprises a red light valve, a green light valve and a blue light valve, each actuator is independently arranged on a light path between the red light valve and the beam combiner, a light path between the green light valve and the beam combiner or a light path between the blue light valve and the beam combiner, each actuator comprises a deflectable flat lens, the flat lenses are used for transmitting light emitted to the beam combiner from the light valves, and the flat lenses can deflect a certain angle along the direction of an optical axis under the driving of the actuator driver, so that the light transmitted by the flat lenses can be translated for a certain distance. The invention is applicable to three-plate light valve type projection equipment.)

1. A three-piece type projection device comprises an audio and video processing unit, a light valve, a beam combiner and a projection lens, wherein the light valve comprises a red light valve, a green light valve and a blue light valve, and the beam combiner is used for combining red, green and blue light beams emitted by the red light valve, the green light valve and the blue light valve; the device is characterized by further comprising an actuator driver and at least two actuators, wherein the actuator driver is electrically connected with the audio and video processing unit, and the audio and video processing unit is used for receiving, decoding and playing audio and video signals and controlling the actuator driver;

each actuator is independently arranged on an R light path, a G light path or a B light path, wherein the R light path, the G light path and the B light path are respectively a light path between a red light valve and a beam combiner, a light path between a green light valve and the beam combiner and a light path between the blue light valve and the beam combiner; each actuator comprises a deflectable flat lens, the flat lens is used for transmitting light emitted by the light valve to the beam combiner, and the flat lens can be deflected by a certain angle along the direction of the optical axis under the driving of the actuator driver, so that the light transmitted by the flat lens is translated for a certain distance.

2. The three-piece projection device of claim 1, wherein the maximum distance that the flat panel lens translates light is greater than or equal to half the pixel size of the DMD.

Technical Field

the invention relates to the technical field of projection display, in particular to a three-piece type projection device.

Background

projection has been widely used in general homes, office meeting rooms, educational institutions, entertainment venues, and the like. The three-plate light valve type projection apparatus is not only high in efficiency but also better in image quality than the single-plate light valve type projection apparatus. During production debugging and use, the three-piece projection equipment has the condition that three color pictures of red, green and blue are partially staggered and not completely overlapped, so that the condition of 'single-color edge tracing' on the picture outline is caused, and the watching effect of a user is influenced. Generally, the method for solving the problem is to disassemble the fine tuning optical path and then install the start-up and view debugging effect, and an ordinary user cannot operate the method, so that the operation is complex and the efficiency is low for professionals.

Therefore, a simple and easy-to-use projection apparatus is needed, which can adjust the red, green and blue light paths to make the three color images completely coincide with each other by real-time and simple operation.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the three-piece projection device is used for solving the problem that the existing three-piece projection equipment is difficult to process 'monochrome trailing' on the picture outline.

in order to solve the problems, the invention adopts the technical scheme that: a three-piece type projection device comprises an audio and video processing unit, a light valve, a beam combiner and a projection lens, wherein the light valve comprises a red light valve, a green light valve and a blue light valve, and the beam combiner is used for combining red, green and blue light beams emitted by the red light valve, the green light valve and the blue light valve; the three-piece projection device is characterized by further comprising an actuator driver and at least two actuators, wherein the actuator driver is electrically connected with the audio and video processing unit, and the audio and video processing unit is used for receiving, decoding and playing audio and video signals and controlling the actuator driver;

Each actuator is independently arranged on an R light path, a G light path or a B light path, wherein the R light path, the G light path and the B light path are respectively a light path between a red light valve and a beam combiner, a light path between a green light valve and the beam combiner and a light path between the blue light valve and the beam combiner; each actuator comprises a deflectable flat lens, the flat lens is used for transmitting light emitted by the light valve to the beam combiner, and the flat lens can be deflected by a certain angle along the direction of the optical axis under the driving of the actuator driver, so that the light transmitted by the flat lens is translated for a certain distance.

Furthermore, in order to ensure that the translation amplitude of the flat lens has at least one pixel, the maximum distance of the flat lens for translating the light ray should be more than or equal to half of the pixel size of the DMD.

The invention has the beneficial effects that: according to the three-piece type projection device provided by the invention, the actuator is arranged in the monochromatic light path, the actuator can conveniently adjust the superposition of the red, green and blue three-color images, and the complicated processes of disassembly, assembly, debugging and the like are greatly reduced. The three-piece type projection device provided by the invention is convenient to use, simple in system and reliable in performance.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention.

Wherein 101 is a red light valve, 102 is a green light valve, 103 is a blue light valve, 200 is an actuator, 300 is a beam combiner, and 400 is a projection lens

Detailed Description

Aiming at the problem that the existing projection equipment is difficult to process 'monochrome edge tracing' on the picture outline, the invention provides a three-piece type projection device. The three-piece type projection device provided by the invention is convenient to use, simple in system and reliable in performance.

The invention specifically comprises an audio and video processing unit, a light valve, a beam combiner 300, a projection lens 400, a digital light control unit, an actuator driver and at least two actuators 200, wherein as shown in fig. 1, the light valve comprises a red light valve 101, a green light valve 102 and a blue light valve 103, and the beam combiner 300 is used for combining red, green and blue light beams emitted by the red light valve 101, the green light valve 102 and the blue light valve 103; each actuator 200 is independently arranged on an R light path, a G light path or a B light path, wherein the R light path, the G light path and the B light path respectively refer to a light path between the red light valve 101 and the beam combiner 300, a light path between the green light valve 102 and the beam combiner 300, and a light path between the blue light valve 103 and the beam combiner 300;

In the present invention, the actuator driver 200 is electrically connected to the audio/video processing unit; the audio and video processing unit is used for receiving, decoding and playing audio and video signals and controlling the actuator driver; the digital light control unit is used for controlling the work of a light valve, a light source, a fan and the like; the light valve is used for realizing micro-images; the invention comprises three sets of digital light control units and light valves, which respectively process red, green and blue information; the beam combiner 300 is used for combining the red, green and blue light beams; the actuator driver is used for controlling the actuator 200 to work; each actuator 200 includes a flat plate lens capable of deflecting, for transmitting the light emitted from the light valve to the beam combiner, the flat plate lens being driven by the actuator driver to deflect at a certain angle along the optical axis direction, so that the light transmitted by the flat plate lens translates for a certain distance; the projection lens 400 images the image on the light valve onto a display screen;

Furthermore, in order to ensure that the translation amplitude of the flat lens has at least one pixel, the maximum distance of the flat lens for translating the light ray should be more than or equal to half of the pixel size of the DMD.