Plane mirror projector optical machine and projector
A projector optical machine and plane mirror technology, applied in the field of projection, can solve the problems of local temperature increase, abnormal operation of the projector, etc.
Active Publication Date: 2013-12-11
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 the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[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 there can also be an intervening element. 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 are used herein for purposes of ill...
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The invention provides a plane mirror projector optical machine and a projector. The plane mirror projector optical machine comprises a machine case, a drive mechanism arranged on a first wall plate of the machine case, and heat-absorbing blocks, wherein the drive mechanism comprises a motor and a transmission shaft connected with the motor. The two ends of the transmission shaft are respectively provided with a first spinning thread and a second spinning thread. A first semi-plane mirror is matched with the first spinning thread, and a second semi-plane mirror is matched with the second spinning thread. The motor drives the transmission shaft to rotate to drive the first semi-plane mirror and the second semi-plane mirror to move towards each other for closing a light path or move away from each other for opening the light path. The heat-absorbing blocks are arranged opposite to the first semi-plane mirror and the second semi-plane mirror. According to the plane mirror projector optical machine, the first semi-plane mirror and the second semi-plane mirror are utilized for reflecting light emitted by a bulb, the light is evenly reflected on the heat-absorbing blocks and absorbed by the heat-absorbing blocks, and the problems that a component is burnt out and the projector can not work normally due to the fact that a large amount of light is absorbed by a small area and the temperature of the small area rises rapidly can be avoided.
Description
technical field [0001] The invention relates to the field of projection technology, in particular to a plane mirror projector light engine and a projector. Background technique [0002] With the progress of society, people's understanding of projectors is getting deeper and deeper, and the requirements for projectors are getting higher and higher, such as its noise, clarity, contrast and so on. [0003] Traditional projectors generally control the contrast by controlling the dynamic iris (IRIS) light blocking film, but the current projector contrast is not very high, and light can still pass through when it is completely dark, because the IRIS light blocking area is too large The reason is small, if you continue to increase the light blocking area of IRIS, the temperature of the projector will be too high to melt when it is completely dark, and the light reflected back by IRIS will make the temperature of the bulb sphere rise rapidly, affecting the use of the bulb Longevi...
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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