SU1420428A1 - Apparatus for checking image quality in optical systems - Google Patents

Abstract

The invention relates to optical instrumentation and can be used both to control large-sized systems with an entrance pupil diameter of up to 2-3 m, and micro-optics. The purpose of the invention is to expand the spectral range of image quality control of optical systems by determining polychromatic wave aberrations. The goal is achieved by the fact that in a control device consisting of a lighting system, a Hartmann diaphragm and a photographic plate, the lighting system is made up of three point sources, one of which generates radiation with a wavelength JLi . Sources are located in a plane parallel to the Hartmann diaphragm, at the apexes of an equilateral triangle with a side (Y a, where a is the distance from the source plane to the photoplate; a is the aperture angle of the lighting system of the Hartmann aperture element, and K and 2 correspond to the boundaries of the spectral range. 1 Il. & (L

Description

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The invention relates to optical instrumentation and can be used to control the image quality of optical systems, manufacturing errors, assembly and alignment of components and products in general.

The purpose of the invention is to provide a device for monitoring the image quality of optical systems, allowing measurement of quality characteristics in a wide spectral region.

With source A, and flow rate w, the iy beam is recorded on photographic plate 9. Since the defocusing is significant, a set of spots (hartmanogram) is formed on the photographic plate, similar to the set of holes on the diaphragm 7. The light of the two other sources is similar to B, C Their images at points S and C, and two more Hartmannograms are formed on the photographic plate. All these three hartmanograms are from

The drawing shows a diagram of the proposed 10 three sources are not superimposed one on the r6 device. Another one and are exhibited simultaneously.

: The device contains an illumination system consisting of an incandescent lamp 1, a condenser 2, and three point sources 3, in front of which are installed interfering radiation filters 4 and 5, which emit radiation with wavelengths I | and K.

The sources are located in the focal plane of the system 6 under control. A Hartmann aperture 7 is installed between system 6 and a flat mirror 8. In a photo system, a photographic plate, characterized by a planed plane shifted by wired or what, to ensure quality control

order a from the focal plane of system 6, images in a wide spectral region,

Photoplate 9 is installed, on which the lighting system is designed as

a hartmanogram is being developed. three point sources, one of which

The device works as follows. generates radiation with a wavelength of |, and two

Claims (1)

Invention Formula A device for controlling the image quality of optical systems, including the lighting system and installed in series along the beam in front of the controlled optical system the Hartmann diaphragm, and beyond the controlled optical Radiation from a point source after passing through the system 6 is emitted by a parallel beam, passes a Hartmann diaphragm 7, is reflected from a flat mirror 8, passes a second aperture 7 and focuses the other wavelengths I.2, located in a plane parallel to the Hartmann diaphragm, at the corners of an equilateral triangle with a side, where a is the distance from the source plane to the photoplate. The system 6 is located in its focal plane — 30 — the aperture angle of the lighting system, for example, at point L, of the conjugate theme of the Hartmann aperture element. With source A, and flow rate w, the iy beam is recorded on photographic plate 9. Since the defocusing is significant, a set of spots (hartmanogram) is formed on the photographic plate, similar to the set of holes on the diaphragm 7. The light of the two other sources is similar to B, C Their images at points S and C, and two more Hartmannograms are formed on the photographic plate. All these three hartmanograms are from the three sources do not overlap one another and are exposed simultaneously. A photographic plate system, characterized in that, in order to ensure quality control Invention Formula A device for controlling the image quality of optical systems, including the lighting system and installed in series along the beam in front of the controlled optical system the Hartmann diaphragm, and beyond the controlled optical generates radiation with a wavelength of |, and two other wavelengths Я.2, located in a plane parallel to the Hartmann diaphragm, at the corners of an equilateral triangle with a side, where a is the distance from the plane of the sources to the photoplate.  - the aperture angle of the illumination system of the Hartmann aperture element. 9  i to bs y Compiler E. Lykasheva Editor A. DolinichTekhred I. VeresKorrector G. Reshetnik Order 4320/45 Circulation 847 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 five ъ /