Method of setting collimator for infinity

FIELD: optics.

SUBSTANCE: proposed method comprises fitting the collimator, to be set for infinity on optical bench, so that TV camera adjusted for infinity with respect to distant object receives, via collimator lens, the collimator reticule image, and focuses the collimator till producing high-quality reticule image on TV camera monitor.

EFFECT: simplified method of setting collimator for infinity.

3 cl, 1 dwg

 

The invention relates to measuring technique and can be used during alignment, adjustment and Assembly of optical systems.

Known installation method to infinity collimator lens remote subject [1, p.132]. Installation of the collimator lens at infinity by this method is calculated according to the star or object located at a distance not closer than 1000 focal length of the lens. Do some pointing and take samples when combining the images of the object with a grid of threads of the eyepiece. Installation of the collimator at infinity corresponds to the position of the sharp image of the subject without any parallax.

Known installation of the collimator at infinity by way of autocollimation [1, p.132]. According to this way in front of the lens of the collimator with the autocollimating eyepiece set flat mirror with high quality external coating or plane-parallel glass plate. The optimal combination of the image grid, reflected from the mirror with a grid eyepiece corresponds to the installation of the collimator at infinity.

The continuation of this method is a method of installation of the collimator at infinity using a plane-parallel glass plates with additional collimator [1, s].

Closest to the proposed invention the two what is the installation method of the collimator infinity auxiliary collimator [1, s]. According to this method exhibited at infinity collimator and auxiliary collimator are mounted on the optical bench against each other and consistently focus on one another until, until it is completely destroyed parallax when combining the images of the grids of each of the collimator.

Analogues and the prototype of the present invention have one, but decisive drawback. Putting on infinity in these ways collimators cannot be used as measuring (testing) equipment when configuring optical devices operating in different spectral wavelength ranges. In particular configured such ways collimators you cannot configure the optical system with detectors operating in different spectral wavelength ranges, i.e. the detectors have different spectral sensitivity.

When configuring optical systems collimators, exhibited at infinity in the ways specified above, and formed by them the image is set on the focal length corresponding to the wavelength λ=0,55. Reception as the equipment operates in different spectral ranges, in particular, the spectral maximum of some photodetectors has a wavelength λ=0,70 mm. In this regard, the setup is ICA optical system when the focal length of the collimator, obtained during visual setting for λ=0.55 m, leads to a defocusing of the system in the case when the system should be configured for operation at a wavelength of λ=0,70 mm. Hence the impossibility of an exact configuration of the equipment, photodetectors which have a maximum spectral sensitivity at a wavelength of λ=0,70 mm.

The objective of the invention is to create conditions for the installation of the collimator at infinity when configuring devices, the spectral sensitivity which is different from the curve vidnosti eyes, with the operational choice of the optimal spectrum radiation, the installation of the collimator at infinity for a specific wavelength from this optimal range. The technical result of the invention is the achievement of metrological efficiency in the simplicity of the method and means of support.

The technical result is achieved in that in the method of installation of the collimator at infinity, including mutual accommodation on the optical bench of the main and auxiliary set at infinity collimators, serial mutual focusing collimators until complete disappearance of parallax when the coincidence of the images of the grids of each of the collimator according to the invention the auxiliary collimator then replace previously exhibited at infinity on UD is subject to certain television camera (hereinafter referred to TV camera) and the main focus of the collimator achieve high-quality image of the test chart collimator on a TV monitor, having first TV camera set to infinity on the remote object and the monitor is a high-quality image of this remote object.

Metrological effectiveness of the proposed method lies in the fact that the TV camera in the guidance system managed by the munition is at the same time, and the configuration tool main collimator at infinity, which are configured optical simulators goals.

Hence, automatically implies the coincidence of the spectral characteristics of all test and control apparatus. The possibility of using TV cameras with sensors of different spectral range defines a wide selection of these ranges. The presence of TV cameras filters allows you to adjust the collimator to infinity for almost any wavelength. The simplicity of the method and of measuring instruments used, no doubt.

Implementation of the proposed method are presented in the drawing.

Based on 1 optical bench USC-CL installed collimator 2 with a focal length of 1600 mm with a set of world 3. Previously exhibited at infinity on a remote object of the TV camera 4 receives through the lens climateresilient one of world 3 and displays it on the monitor 5, electrically connected with the TV camera 4 cable 6. The focus of the collimator 2 achieve clear and high quality image worlds on the monitor. This corresponds to the setting of the collimator at infinity for the spectral range corresponding to TV-camera.

The proposed method is used when configuring optical systems, which are intended to control equipment operating IR range of wavelengths.

Sources of information

1. Vaatimasi. "Optical measurements", Publishing house of surveying the literature, Moscow, 1961, SCR-133.

1. The method of installation of the collimator at infinity, including placing on the optical bench set at infinity collimator so that exhibited at infinity remote subject television camera receives through the lens of the collimator image grid collimator, and focus collimator to obtain high-quality image of the grid on the monitor TV cameras.

2. The method of installation of the collimator at infinity according to claim 1, characterized in that a television camera set photodetectors with different spectral sensitivity.

3. The method of installation of the collimator at infinity according to claim 1, characterized in that a television camera set different optical filters.



 

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