CN-115683567-B - Parallax quantization detection device, detection and adjustment method for head-up display

CN115683567BCN 115683567 BCN115683567 BCN 115683567BCN-115683567-B

Abstract

The invention belongs to the technical field of optical system adjustment, in particular to a parallax quantification detection device and a detection and adjustment method of a head-up display, wherein the parallax quantification detection device of the head-up display comprises a photoelectric theodolite, a large-view-field collimator, a mounting bracket, a reference plate reflector, a base, a detector, a precise linear guide rail, a precise lifting platform and an optical platform, the invention can rapidly and objectively interpret and adjust the parallax of the head-up display by using the characteristics of the photoelectric theodolite for observing and aiming the imaging characters of the head-up display and the adjustment direction of the image source at the focal plane, and has wider application value in the field of optical machine adjustment.

Inventors

LI HONGWEI
PENG XIAOLONG
LIANG JIAWEI
LI HAOJIE

Assignees

中国航空工业集团公司洛阳电光设备研究所

Dates

Publication Date: 20260505
Application Date: 20221012

Claims (5)

1. A parallax quantification detection method of a head-up display is characterized by comprising a head-up display parallax quantification detection device, wherein the device comprises a photoelectric theodolite, a large-view-field collimator, a mounting bracket, a reference plate reflector, a base, a detector, a precise linear guide rail, a precise lifting platform and an optical platform, wherein the precise lifting platform is fixed on the optical platform, the precise linear guide rail is fixed on the precise lifting platform, the mounting bracket is fixed on the base, the base is fixed on the optical platform, the photoelectric theodolite is fixed on the precise linear guide rail, and the large-view-field collimator is fixed on the optical platform; The method comprises the following steps: 1) Building a parallax quantization detection device of the head-up display; 2) Fixing the mounting bracket on the base, mounting the reference plate reflector on the mounting bracket, adjusting the photoelectric theodolite to be self-aligned with the reference plate reflector, removing the reference plate reflector, and adjusting the large-view collimator to align the center of the photoelectric theodolite with the center of the large-view collimator; 3) Mounting the head-up display on the mounting bracket, and opening the detector to load the head-up display with the star image; 4) The intersection point of the pitching axis and the azimuth axis of the photoelectric theodolite is positioned at the eye position center of the head-up display by adjusting the precise lifting table and the precise linear guide rail, and the photoelectric theodolite is adjusted to normally display the azimuth angle and the pitching angle; 5) Aiming a cross star point at the position of the optical axis of a starfish picture of a head-up display by using a photoelectric theodolite telescope to enable a cross line of the photoelectric theodolite telescope to coincide with the starfish cross star, and then locking the pitching and the azimuth of the photoelectric theodolite; 6) Adjusting a precise linear guide rail to enable the photoelectric theodolite to move in the left-right direction respectively, observing an aiming cross star through a telescope, if a telescope cross line always coincides with a star of a full sky, enabling a head-up display to have no parallax in a 0-degree view field, judging whether the parallax is converging parallax or diverging parallax through a shielding upper combination if the telescope cross line is not coincident with the star of the full sky when the photoelectric theodolite is moved, and judging whether the parallax is converging parallax or diverging parallax if a branching line generated by the upper combination is found on the upper side of the original cross line through the shielding upper combination, and converging parallax if the branching line is diverging parallax; 7) Moving the photoelectric theodolite leftwards from the middle position of the eye position to the edge of the view field by adjusting a precise linear guide rail in the view field of 0 degrees, aiming the telescope at the cross star, and recording the position angle of the position Then the photoelectric theodolite is moved rightwards until the edge of the field of view aims the telescope at the cross star, and the azimuth angle of the position is recorded The parallax of the 0-degree view field azimuth is as follows Then, the parallax magnitudes of different view field orientations of the head-up display are measured based on the same method.
2. The method for quantitatively detecting parallax of head-up display according to claim 1, wherein the large-view-field parallel light tube has pitching, azimuth, rolling, lifting and translation functions.
3. The method for quantitatively detecting parallax of the head-up display according to claim 1, wherein an included angle between a reference plane of the reference plate reflector and a normal line of the reflector is 90 degrees plus or minus 5 percent.
4. The head-up display parallax quantification detection method based on claim 1, wherein the magnification of the photoelectric theodolite telescope is greater than or equal to 30 times.
5. A parallax adjustment method for a head-up display, implemented by the parallax quantization detection method for a head-up display according to any one of claims 1 to 4, comprising the steps of: S201, reducing convergence parallax of the head-up display by adding an adjusting gasket at the front side of an image source, and reducing divergence parallax of the head-up display by reducing the gasket at the front side of the image source; s202, adjusting a precision lifting platform in the vertical direction by using the method of the step 7) to measure pitching parallaxes of different fields of view of the head-up display; And S203, when the pitching parallax is measured, if the parallax types of the upper side and the lower side of the central position of the eye position are different, adjusting the pitching parallax by adjusting the jack screw on the lower side of the reflector base to change the angle of the reflector.

Description

Parallax quantization detection device, detection and adjustment method for head-up display Technical Field The invention belongs to the technical field of optical system adjustment, and particularly relates to a parallax quantification detection device of a head-up display, a detection and adjustment method. Background Head-up displays are an important on-board aiming display device carried by modern fighters. The basic principle is that the collimation optical system is used for projecting aiming characters and main flight parameters at infinity, so that a pilot observes the main flight parameters while aiming at a target, and the attack efficiency and the flight safety are greatly improved. Head-up displays require that the lines of sight from the same spot on the image source be parallel beams, and that the non-parallelism of the beams of the same spot be referred to as parallax of the head-up display. Parallax is an important optical performance index of a head-up display, and parallax adjustment is performed on the basis of parallax detection. In the conventional parallax detection method, a large-view-field collimator is used as detection equipment, as shown in fig. 1, only a head-swing observation method can be adopted, and the type of parallax and the parallax size are determined by the movement of an image source character of a head-up display relative to a collimator division image. The method needs to be interpreted by human eyes, and has the advantages of high subjectivity, low measurement precision and high uncertainty in parallax detection. Disclosure of Invention In view of this, in order to solve the current situation that the existing parallax detection and adjustment method is high in subjectivity and low in precision, the invention provides a parallax quantification detection device and a parallax quantification detection and adjustment method for a head-up display. In order to achieve the technical purpose, the invention adopts the following specific technical scheme: the parallax quantification detection device of the head-up display comprises a photoelectric theodolite, a large-view-field collimator, a mounting bracket, a reference plate reflecting mirror, a base, a detector, a precise linear guide rail, a precise lifting platform and an optical platform; the precise lifting platform is fixed on the optical platform, the precise linear guide rail is fixed on the precise lifting platform, the mounting bracket is fixed on the base, the base is fixed on the optical platform, the photoelectric theodolite is fixed on the precise linear guide rail, and the large-view-field collimator is fixed on the optical platform. Furthermore, the large-view-field parallel light pipe has pitching, azimuth, rolling, lifting and translation functions. Further, the lifting straightness of the precision lifting platform is less than or equal to 20 seconds, and the lifting range is more than or equal to 150mm. Further, the included angle between the reference plane of the reference plate reflector and the normal line of the reflector is 90 degrees plus or minus 5 percent. Further, the straightness of the precise linear guide rail is smaller than or equal to 20 seconds, and the movement range is larger than or equal to 200mm. Furthermore, the magnification of the photoelectric theodolite telescope is larger than or equal to 30 times, and the angle measurement precision is higher than 2 seconds. Furthermore, the invention also provides a head-up display parallax quantization detection method realized based on the head-up display parallax quantization detection device, which is characterized by comprising the following steps: 1) Building a parallax quantization detection device of the head-up display; 2) Fixing the mounting bracket on the base, mounting the reference plate reflector on the mounting bracket, adjusting the photoelectric theodolite to be self-aligned with the reference plate reflector, removing the reference plate reflector, and adjusting the large-view collimator to align the center of the photoelectric theodolite with the center of the large-view collimator; 3) Mounting the head-up display on the mounting bracket, and opening the detector to load the head-up display with the star image; 4) The intersection point of the pitching axis and the azimuth axis of the photoelectric theodolite is positioned at the eye position center of the head-up display by adjusting the precise lifting table and the precise linear guide rail, and the photoelectric theodolite is adjusted to normally display the azimuth angle and the pitching angle; 5) Aiming a cross star point at the position of the optical axis of a starfish picture of a head-up display by using a photoelectric theodolite telescope to enable a cross line of the photoelectric theodolite telescope to coincide with the starfish cross star, and then locking the pitching and the azimuth of the photoelectric theodolite; 6) Adjusting a precise linear guide ra