A device and method for determining the parallelism of the optical axis of a continuous zoom TV

Abstract

The invention provides a device and a method for determining parallelism of a continuous zooming television optical axis. The determining method of the optical axis includes: placing a continuous zooming television on an adjustable platform, and aligning with a parallel optical pipe with a cross division; connecting an eclectic cross generator and a display at the same time; due to that when the television zooms, a cross division image on the display generates approximately linear displacement, adjusting relative position of the zooming television to ensure that the cross division image on the display is immovable when the television zooms, at the moment the optical axis of the parallel optical pipe being the optical axis of the continuous zooming lens; further adjusting space position of the zooming television CCD, thus ensuring that the zooming axis is accordant with the center position of the target surface of CCD. Deviation between the cross partition of the parallel optical pipe and the electric cross partition of the zooming television can be observed on the display through aligning the preset lens of a square pipe with the cross partition of the parallel optical pipe and placing the same tightly adjacent to the side reference of the zooming television, and the deviation can be eliminated by two reference surface of the zooming television, namely ensuring the parallelism of the zooming axis and the optical axis of the installing base plane.

Description

technical field [0001] The invention belongs to the technical field of optical adjustment, and specifically relates to a device and a determination method for determining the parallelism of optical axes of a continuous zoom television. Background technique [0002] During the optical-mechanical assembly process of the continuous zoom optical system, it is necessary to adjust the center of the image sensor to the optical axis of the continuous zoom lens. If the continuous zoom lens has no reference plane, or the reference plane is not accurate, it is necessary to determine the The optical axis of the lens, and then the center of the image sensor can be adjusted to the optical axis of the continuous zoom lens. [0003] At present, there are many ways to determine the zoom axis of the continuous zoom optical system. For the continuous zoom lens with a reference plane, it is usually the end face of the lens barrel. The method of determining the optical axis is relatively simple....

AI Technical Summary

Problems solved by technology

[0006] 1. It can only be used to determine the optical axis of the zoom lens. There is no shape and position tolerance relationship between the zoom axis and the installation reference, and it cannot be directly used in the photoelectric stabilization device;

[0007] 2. During debugging, it is necessary to adjust the collimator so that the cross reticle does not move during the zooming process. In case of a large collimator, it is difficult to adjust, and the zoom lens and CCD need to search for images again, and the work is repeated during adjustment. large

[0008] The above methods and patents only determine the zoom axis of the continuous zoom optical system, and do not establish a spatial position relationship between this virtual zoom axis and any reference, and cannot be used in upper-level devices or product equipment

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