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Lens and method for regulating lens eccentricity

A lens and eccentric technology, applied in installation, optics, instruments, etc., can solve the problems of lens scrapping, reducing the time for lens installation and alignment, and time-consuming lens maintenance.

Inactive Publication Date: 2008-01-16
PREMIER IMAGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a lens that can be easily adjusted and its method, which can reduce the time for installing the lens and adjusting the lens, and can effectively solve the problems of time-consuming maintenance and lens scrapping when the lens is off-center.

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  • Lens and method for regulating lens eccentricity
  • Lens and method for regulating lens eccentricity
  • Lens and method for regulating lens eccentricity

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Embodiment Construction

[0035] The following embodiments will take the rear group lens assembly of the rear projection lens as an example, because generally the assembly sensitivity of the rear projection lens is higher than that of the front projection lens, and the lens eccentricity of the rear group lens assembly in the rear projection lens is particularly sensitive. Meanwhile, the following embodiments will be illustrated by taking a rear lens assembly of a liquid crystal on silicon (LCoS) rear projection lens with a total of nine lenses as an example. However, it should be noted that the present invention is not limited to the LCoS rear projection lens or its rear group lens assembly, and the present invention can also be applied to lenses of digital cameras, camera phones or other electronic devices, and the present invention includes Lenses are not limited to nine pieces.

[0036] First, please refer to FIG. 2A and FIG. 2B together for the lens of the present invention. 2A is an exploded pers...

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Abstract

The invention provides a camera lens and a method regulating the lens eccentricity; the camera lens in the invention comprises a first lens cylinder, a second lens cylinder and a fixing device; wherein the first lens cylinder can contain at least one first lens, which has a first optical axle; the second lens cylinder can contain at least one second lens, which has a second optical axle; the first lens cylinder is equipped on the second lens cylinder; under the condition that the first lens cylinder is rotated, the eccentric quantity of the first optical axle and the second optical axle can be converged to be within a preset tolerance value; furthermore, the first lens cylinder and the second lens cylinder can be fixed with each other by the fixing device.

Description

technical field [0001] The invention relates to a lens and a method for adjusting lens eccentricity, in particular to a lens composed of two lens barrels and a method for adjusting lens eccentricity. Background technique [0002] Since the projector is a high-precision optical-mechanical-electrical integration product, the market requires its appearance to be slim and short, and its projection brightness and resolution must also be improved, resulting in a relative increase in the number of lenses in the projector lens. However, when each lens in the projector is assembled, the optical accuracy of the entire lens is very sensitive to the eccentricity generated by the optical axis deviation of each lens, so that the eccentricity of each lens seriously affects its projection. quality. Generally speaking, once the optical axis of the lenses in the lens is eccentric, one of the lenses in the lens must be fixed as a reference, and the other lens must be rotated to correct the er...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/02
Inventor 陈嘉鸿王金清
Owner PREMIER IMAGE TECH