Plane Mirror Projector Optical Engine and Projector
A projector optical machine and plane mirror technology, applied in the field of projection, can solve problems such as abnormal operation of the projector and local temperature rise
Active Publication Date: 2016-02-17
SHENZHEN ACTO DIGITAL VIDEO TECH
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Problems solved by technology
[0004] Based on this, it is necessary to provide a plane mirror projector optical machine and projection device for the problem that the small area of the IRIS light-shielding sheet absorbs a large amount of heat and cannot dissipate heat in time, so that the local temperature rises sharply, thereby causing the projector to work abnormally. machine
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[0024] In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.
[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only ...
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The invention provides a plane mirror projector optical engine and a projector. The optical engine of the plane mirror projector includes: a casing, a driving mechanism set on the first wall of the casing, including a motor and a transmission shaft connected to the motor, and the two ends of the transmission shaft are respectively provided with a first helical thread and a second helical thread . The first half-plane mirror cooperates with the first screw thread. The second half-plane mirror cooperates with the second screw thread. The motor drives the transmission shaft to rotate, and drives the first and second half-plane mirrors to move toward each other to close the optical path or move opposite to each other to open the optical path. A heat-absorbing block arranged opposite to the first and second half-plane mirrors. The light engine of the above-mentioned plane mirror projector, using the first half-plane mirror and the second half-plane mirror, can reflect the light emitted by the bulb, and evenly shoot the light on the heat-absorbing block, so that it is absorbed, and there will be no large amount of absorption in a small area. Light causes the temperature of this part to rise sharply and burn out the components, which makes the projector work abnormally.
Description
technical field [0001] The invention relates to the technical field of projection, in particular to a flat mirror projector optical machine and a projector. Background technique [0002] With the progress of society, people's understanding of projectors has become more and more profound, and the requirements for projectors have become higher and higher, such as his noise, clarity, contrast and so on. [0003] Traditional projectors generally control the contrast by controlling the dynamic iris (IRIS) light blocking plate, but the current projector contrast is not very high, and light can still pass through when it is completely black, because the IRIS light blocking area is too large. Small reason, if you continue to increase the light blocking area of the IRIS, the projector will be overheated and melted when it is completely black, and the light reflected by the IRIS will rapidly increase the temperature of the bulb sphere, affecting the use of the bulb. The IRIS light ...
Claims
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IPC IPC(8): G03B21/14G03B21/16G02B7/182
Inventor 梁志强曾万军梁向东
Owner SHENZHEN ACTO DIGITAL VIDEO TECH