CN215296620U

CN215296620U - Wide-range distortion measuring device

Info

Publication number: CN215296620U
Application number: CN202121732734.0U
Authority: CN
Inventors: 聂亮; 刘宝元; 陈玉娇
Original assignee: Xian Technological University
Current assignee: Xian Technological University
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-24
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a wide-range distortion measuring device, which comprises a distortion target module, a large-view-field collimator, an adjusting platform module and an illuminating light source; the large-view-field collimator is positioned in the middle of the distortion target module, and the optical axis is superposed with the central normal of the distortion target module; the adjusting platform module is positioned on the ground and is connected with the ground through an expansion screw; the illumination light sources are positioned on two sides of the distortion target and used for illuminating the distortion target. The utility model discloses the reasonable combination of the big visual field collimator that will measure little visual field photoelectric measurement system and the standard distortion target that measures big visual field photoelectric measurement system has simplified photoelectric measurement's complexity greatly in same photoelectric measurement system. The application of the photoelectric measurement system in military affairs is simpler and more convenient.

Description

Wide-range distortion measuring device

Technical Field

The utility model relates to an optical system, concretely relates to distortion measuring device of wide range.

Background

At present, the distortion of an optical system has a great influence on the measurement, and the distortion measuring devices on the market are only single small-field distortion measurement or large-field distortion measurement. The photoelectric system has the advantages of high precision, strong anti-interference performance and the like, and is widely applied to various fields, particularly military fields. However, the conventional small-field or large-field optoelectronic system has certain limitations, and in order to solve this problem, it is necessary to provide a wide-range distortion measuring apparatus.

Disclosure of Invention

A primary object of the present invention is to provide a wide-range distortion measuring device, which combines a large view field collimator for measuring the distortion of a small view field photoelectric system and a standard distortion target for measuring the distortion of the large view field photoelectric system to combine the large view field collimator and the standard distortion target into a distortion comprehensive target for measuring the distortion of the large view field photoelectric system.

The utility model adopts the technical proposal that: a wide-range distortion measuring device comprises a distortion target module, a large-view-field collimator, an adjusting platform module and an illuminating light source; the large-view-field collimator is positioned in the middle of the distortion target module, and the optical axis is superposed with the central normal of the distortion target module; the adjusting platform module is positioned on the ground and is connected with the ground through an expansion screw; the illumination light sources are positioned on two sides of the distortion target and used for illuminating the distortion target.

Further, the distortion target module comprises a marble supporting structure, an aluminum plate target pattern and a laser pointer; the marble supporting structure supports and fixes the marble panel through the two marble columns; the distorted pattern is made by laser marking, and the pattern is in a dot matrix-grid form.

Furthermore, the large-view-field collimator comprises a laser indicator installation datum, a shell structure, an objective lens, a reticle, ground glass and a halogen tungsten lamp; the shell structure is a supporting main body of the large-view-field collimator; the frosted glass mainly has the function of enabling the emergent light of the light source to be uniform.

The halogen tungsten lamp is used for lighting the collimator reticle with a large view field and is supplied with power through a 12V direct current transformer.

Furthermore, the adjusting table module is used for adjusting the position, the pitch, the elevation (height) and the position (left and right) of the product; the adjusting platform module comprises a left-right translation adjusting platform, a height adjusting platform, an azimuth adjusting platform, a pitching adjusting platform, a rear translation guide rail and a laser range finder; the left-right translation adjusting platform is mainly used for left-right translation micro-motion of the product to the optical axis; the height adjusting platform is mainly used for lifting adjustment of a tested product so as to adapt to the tested products with different center heights; the azimuth and elevation adjusting platform is mainly used for adjusting the azimuth and elevation angle of a tested product, and is convenient for aligning an optical axis; the front and back translation guide rail is mainly used for adjusting the distance between the product and the target so as to adapt to the products of a telescopic system and a photographic system.

Still further, the illumination source is primarily used for distorted target illumination.

The utility model has the advantages that: the utility model discloses the reasonable combination of the big visual field collimator that will measure little visual field photoelectric measurement system and the standard distortion target that measures big visual field photoelectric measurement system has simplified photoelectric measurement's complexity greatly in same photoelectric measurement system. The application of the photoelectric measurement system in military affairs is simpler and more convenient.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

FIG. 1 is a schematic diagram of a wide range distortion measurement apparatus of the present invention;

fig. 2 is a schematic structural diagram of a distortion target module of the present invention;

FIG. 3 is a schematic structural view of a collimator with a large field of view according to the present invention;

fig. 4 is a schematic structural diagram of the adjusting table module of the present invention.

Reference numerals:

1 is a distortion target module, 2 is a large-view-field collimator, 3 is an adjusting platform module, and 4 is an illumination light source;

11 is a marble supporting structure, 12 is an aluminum plate target pattern, and 13 is a laser indicator; 21 is a laser indicator installation reference, 22 is a shell structure, 23 is an objective lens, 24 is a reticle, 25 is ground glass, and 26 is a halogen tungsten lamp; 31 is a left and right translation adjusting table, 32 is a height adjusting table and an azimuth adjusting table, 33 is a pitching adjusting table, 34 is a rear translation guide rail, and 35 is a laser range finder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1 to 4, a wide-range distortion measuring device includes a distortion target module 1, a large-view-field collimator 2, an adjusting table module 3, and an illumination light source 4; the large-view-field collimator 2 is positioned in the middle of the distortion target module 1, and the optical axis is superposed with the central normal of the distortion target module 1; the adjusting platform module 3 is positioned on the ground and is connected with the ground through an expansion screw; the illumination light sources 4 are positioned on two sides of the distortion target and used for illuminating the distortion target.

The distortion target module comprises a marble supporting structure 11, an aluminum plate target pattern 12 and a laser pointer 13; the marble supporting structure supports and fixes the marble panel through the two marble columns; the distorted pattern is made by laser marking, and the pattern is in a dot matrix-grid form.

The large-view-field collimator 2 comprises a laser indicator installation reference 21, a shell structure 22, an objective lens 23, a reticle 24, ground glass 25 and a halogen tungsten lamp 26; the housing structure 22 is the support body for the large field of view collimator; the frosted glass mainly has the function of enabling the emergent light of the light source to be uniform.

The halogen tungsten lamp 26 is used for large-view field collimator reticle illumination and is powered by a 12V direct current transformer.

The adjusting platform module 3 is used for adjusting the position, pitch, elevation (height) and position (left and right) of a product;

the adjusting platform module 3 comprises a left-right translation adjusting platform 31, a height adjusting platform 32, an azimuth adjusting platform 33, a back translation guide rail 34 and a laser range finder 35; the left-right translation adjusting platform is mainly used for left-right translation micro-motion of the product to the optical axis; the height adjusting platform is mainly used for lifting adjustment of a tested product so as to adapt to the tested products with different center heights; the azimuth and elevation adjusting platform is mainly used for adjusting the azimuth and elevation angle of a tested product, and is convenient for aligning an optical axis; the front and back translation guide rail is mainly used for adjusting the distance between the product and the target so as to adapt to the products of a telescopic system and a photographic system.

The illumination source 4 is mainly used for distortion target illumination.

Example 2

A wide range distortion measurement apparatus method, comprising: firstly, adjusting the alignment of a tested photoelectric imaging system (arranged in an adjusting platform module) and a test target plate, adjusting the distance between the tested photoelectric imaging system and a standard target according to the field of view of the tested photoelectric system to ensure that a distorted target image is full of the field of view of the tested photoelectric system, and adjusting the lifting, the direction, the pitching and the position of the tested photoelectric system according to a target image of a collimator with a large field of view to ensure that the optical axis of the tested photoelectric system is aligned with the center of a distorted target; and for an infinite imaging system with a view field of 10-22.5 degrees, a large-view-field collimator is adopted for measurement. Placing a distortion target on a focal plane, adjusting the position of a measured photoelectric system to ensure that an entrance pupil of the measured photoelectric system is superposed with an exit pupil of a large-view-field collimator, collecting an image of the distortion target, and analyzing by test software to obtain a distortion quantity; for an imaging system with a field of view of 22.5-90 degrees, standard distortion target measurement is adopted; the standard distortion target image shot by the photoelectric system to be measured is converted into a digital image through analog-to-digital conversion and transmitted to a computer, and the distortion quantity can be obtained through distortion measurement and analysis software; the distortion measurement adopts a polynomial model, the coordinates of the ideal image point position and the coordinates of the image point position in the distorted image are respectively represented by extracting image control points, a mathematical expression of the polynomial model is given, and the distortion measurement precision can be ensured to reach 0.5%.

The utility model provides a target realization can measure the photoelectric distortion measurement system device of big middle and small visual field distortion simultaneously through the distortion of two kinds of targets constitution of big visual field collimator and real target. Wherein, a distortion target is placed on the focal plane of the collimator with a large view field, and the distortion of the infinite imaging system with a small view field is measured; the standard distortion target is used to measure the distortion of a large field-of-view imaging system.

The utility model discloses combine the big visual field collimator of the little visual field photoelectric system distortion of measurement and measure the standard distortion target of big visual field photoelectric system distortion and make it make up into the distortion comprehensive target of a measurable quantity big visual field photoelectric system distortion.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A wide-range distortion measuring device is characterized by comprising a distortion target module (1), a large-view-field collimator (2), an adjusting table module (3) and an illuminating light source (4); the large-view-field collimator (2) is positioned in the middle of the distortion target module (1), and the optical axis is superposed with the central normal of the distortion target module (1); the adjusting platform module (3) is positioned on the ground and is connected with the ground through an expansion screw; and the illumination light sources (4) are positioned on two sides of the distortion target and used for illuminating the distortion target.

2. The wide range distortion measurement apparatus of claim 1 wherein the distortion target module comprises a marble support structure (11), an aluminum plate target pattern (12), a laser pointer (13); the marble supporting structure supports and fixes the marble panel through the two marble columns; the distorted pattern is made by laser marking, and the pattern is in a dot matrix-grid form.

3. The wide range distortion measurement device of claim 1, wherein the large field of view collimator (2) comprises a laser pointer mounting datum (21), a housing structure (22), an objective lens (23), a reticle (24), ground glass (25), a tungsten halogen lamp (26); the shell structure (22) is a support body of the large-field collimator; the ground glass mainly has the function of enabling emergent light of a light source to be uniform; the halogen tungsten lamp (26) is used for the illumination of the large-view-field collimator reticle and is supplied with power through a 12V direct current transformer.

4. The wide range distortion measurement device of claim 1, wherein the adjustment stage module (3) is used for azimuth, pitch, elevation, position adjustment of the product; the adjusting platform module (3) comprises a left-right translation adjusting platform (31), a height adjusting platform (32), an azimuth and elevation adjusting platform (33), a rear translation guide rail (34) and a laser range finder (35); the left-right translation adjusting platform is mainly used for left-right translation micro-motion of the product to the optical axis; the height adjusting platform is mainly used for lifting adjustment of a tested product so as to adapt to the tested products with different center heights; the azimuth and elevation adjusting platform is mainly used for adjusting the azimuth and elevation angle of a tested product, and is convenient for aligning an optical axis; the front and back translation guide rail is mainly used for adjusting the distance between the product and the target so as to adapt to the products of a telescopic system and a photographic system.

5. The wide range distortion measurement apparatus of claim 1, wherein the illumination source (4) is primarily used for distortion target illumination.