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lens protector

A technology for protecting parts and lenses, which is applied to optics, instruments, projection devices, etc., can solve the problems that cannot be considered, casting is difficult to achieve, etc., and achieves the effect of avoiding casting difficulties, simple structure, and cost reduction.

Inactive Publication Date: 2016-08-03
HANGZHOU BRANCH NEC VIEWTECH TRADING SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this solution has the following problems: as mentioned above, a flange (or groove) needs to be formed on the front side of the lens protector to install the lens cap, and a cone shape needs to be formed on the rear side, but this is difficult to achieve in casting. of
Therefore, the above solutions can hardly be considered in actual production

Method used

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Embodiment Construction

[0039] Hereinafter, a specific structure of the lens protector of the present invention will be described with reference to the drawings.

[0040] figure 1 It is a front view of the projector equipped with the lens protector of this invention. figure 2 yes figure 1 Partial enlarged view of part A in middle. Reference numeral 10 denotes a projector, 20 denotes a lens protector of the present invention, and 16 denotes a lens.

[0041] exist image 3 The figure shows the housing structure of the projector 10. The housing of the projector 10 is formed by joining the upper housing 12 and the lower housing 13, and an opening is formed at the junction of the upper housing 12 and the lower housing 13. 14. The opening is used to expose the lens of the projector installed in the casing to enable projection. In the present invention, the front and rear directions are defined based on the projection direction of the lens, that is, the front refers to the front side of the projection...

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PUM

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Abstract

The present invention provides a lens protector, which is arranged on the housing of the optical device to expose the opening of the lens, comprising a main body and a fitting, the main body has an annular outer peripheral surface and an inner peripheral surface concentric with the outer peripheral surface, The fitting has an annular outer peripheral surface, a first fastening part on the main body, a second fastening part on the fitting, and the first fastening part and the second fastening part pass between the main body and the fitting In the fastened and mated state, the outer peripheral surface of the fitting part is opposite to the inner peripheral surface of the main body. The lens protector of the present invention can appropriately cope with mounting lenses of different sizes in the same housing. Moreover, the present invention also provides a structure for preventing vibration noise, which can prevent vibration noise caused by looseness between the main body and the fitting.

Description

technical field [0001] The present invention relates to a lens-guard for an optical device, in particular to a lens-guard for a lens of a projector. Background technique [0002] Projectors are used more and more in daily life and production. Most of the projectors currently on the market are equipped with a ring-shaped lens protector, which is installed on the upper casing that constitutes the projector casing. Between the lower casing and the front of the lens, it serves to connect the upper and lower casings of the projector, and blocks the line of sight entering from the lens opening of the casing, preventing the user from seeing the internal structure of the projector and causing a sense of clutter. Moreover, a flange or a groove is usually formed on the front side of the annular inner wall of the lens protector so that the lens cover can be snapped onto the lens protector. [0003] The lens protectors currently used in commercially available projectors are all single ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/00
Inventor 邵政淇宋倾江彩
Owner HANGZHOU BRANCH NEC VIEWTECH TRADING SHENZHEN