Lens cover and projector
A lens cover and lens technology, applied in the field of lens cover, can solve the problems of reducing the shading effect, unable to achieve shading, visual disturbance of users, etc., to achieve the effect of increasing the heat dissipation area and slowing down the temperature rise rate
Inactive Publication Date: 2011-08-24
QISDA OPTRONICS (SUZHOU) CO LTD +1
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- Application Information
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Problems solved by technology
To solve this problem, there is currently a lens cover made of a light-transmitting plastic material, which uses light-transmitting properties to reduce the energy absorbed by the lens cover itself, thereby avoiding softening or even melting. However, through the lens cover The light will cause visual disturbance to the user, and will still reduce the shading effect, or even fail to achieve the purpose of shading
Method used
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[0019] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.
[0020] see Figure 1 to Figure 2 , figure 1 It is a schematic diagram of the lens cover 1 covering the lens 22 of the projector 2 according to a preferred embodiment of the present invention; figure 2 for figure 1 A schematic diagram of the middle lens cover 1 at another viewing angle; image 3 for figure 2 The sectional view of the middle lens cover 1 along the section line X-X. The lens cover 1 includes a cover body 12 and a connecting portion 14. The connecting portion 14 includes two cantilever holding structures, which are relatively arranged around the cover body 12. The cantilever holding structure utilizes a flange 142 thereon to clamp the lens 22, so as to Realize the purpose of connecting the lens cover 1 and the lens 22; but the present invention is ...
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The invention discloses a lens cover for covering a lens. The lens cover comprises a cover body and a connecting part, wherein the cover body is provided with a surface and a multi-surface reflection structure on the surface; the connecting part is used to be connected to the lens and make the cover body cover the lens; and the multi-surface reflection structure faces the lens so as to reflect light rays from the lens. The lens cover cannot absorb all the light rays irradiated to the lens cover by a reflection effect of the multi-surface reflection structure, so that the rising speed of the temperature of the lens cover is reduced, and a phenomenon that the common rubber cover is softened and even molten within a short time when covered on the lens which is still used for projection in the prior art is eliminated. In addition, the multi-surface reflection structure is favorable for increasing the heat dissipation area of the lens cover and further reducing the rising speed of the temperature.
Description
technical field [0001] The invention relates to a lens cover, in particular to a lens cover for a projector lens. Background technique [0002] At present, projectors have been widely used in various occasions, such as watching movies, meeting briefings, case discussions, etc. In the case of case discussion, the projector is mostly an auxiliary tool, so it is often necessary to temporarily turn off the projector to facilitate written discussions or other manuscript discussions. At present, most common projectors use halogen lamps as the projection light source, which is not suitable for frequent switching operations, and it takes a long time to re-light the halogen lamps, which is not conducive to users to quickly change the discussion situation. In addition, most of the current projectors have a light source protection mechanism, which makes users feel confused when operating the control panel, so there may be erroneous operations or repeated operations. Therefore, users ...
Claims
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IPC IPC(8): G03B21/54G03B21/00G02B5/122
Inventor 吴中暄林焕佑
Owner QISDA OPTRONICS (SUZHOU) CO LTD