Hartmann sensor relay lens with multiplying power fine-adjustment mechanism

Abstract

The invention discloses a Hartmann sensor relay lens with a multiplying power fine-adjustment mechanism, and belongs to the field of photoelectric detection and adaptive optics. In order to overcome the shortcoming that the multiplying power in the traditional Hartmann sensor relay lens is fixed, a front component, a rear component and an adjusting component are arranged in a relay lens barrel; a front component lens is fixed by a pressure ring; a rear component lens is arranged in a rear component seat and is fixed by a rear component pressure ring; an adjusting component lens is arranged on an adjusting component seat and is fixed by an adjusting component pressure ring; the adjusting component lens can move in the front-back direction by shifting an adjusting component shifting column, so that fine adjustment on the multiplying power of the relay lens is realized; after the relay lens is adjusted to an accurate position, an adjusting component set screw is screwed down to fix the adjusting component; the front component is a combination of a negative lens and a positive lens which are adhered to each other; the focal power of the front component is positive; the negative lens is a meniscus lens; the positive lens is a double-convex-shaped lens; the rear component is a combination of a positive lens and a negative lens which are adhered to each other; the focal power of the rear component is positive; the positive lens is a double-convex-shaped lens; the negative lens is a meniscus lens; and the multiplying power adjusting component is a meniscus lens with positive focal power.

Description

technical field [0001] The invention relates to a Hartmann sensor relay lens with a magnification fine-tuning mechanism, which belongs to the field of photoelectric detection and adaptive optics. Background technique [0002] The Hartmann sensor is an optical measurement device that obtains phase information of the wavefront by measuring the slope of the wavefront. It is the most important wavefront detection instrument in the fields of adaptive optics, active optics, and laser beam inspection. [0003] Such as figure 1 As shown, the Hartmann sensor is composed of microlens array, relay lens, CCD camera and corresponding data acquisition and processing system. Among them, the relay lens is used to image the speckle image formed by the microlens on the target surface of the camera according to a certain magnification, so as to realize the matching between the size of the microlens and the pixel of the camera. Especially in the wavefront detection of the adaptive optics syst...

AI Technical Summary

Problems solved by technology

It can be seen that due to the magnification error, the number of pixels occupied by the sub-aperture size is not an integer, and the spot shape changes irregularly after the discrete sampling of the CCD pixel, which will affect the centroid calculation accuracy

[0005] The current Hartmann sensor relay lens is a fixed magnification lens. Although the magnification is strictly designed according to the matching between the microlens size and the CCD pixel size, due to processing and assembly errors, there is a certain amount of difference between the final magnification of the system and the design value. deviation

In particular, optical processing errors are unavoidable, and generally the magnification error cannot be compensated by simple interval adjustment, which will definitely affect the performance of the Hartmann sensor

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