CN201716174U - Parallax measuring apparatus for aviation airborne head-up display - Google Patents
Parallax measuring apparatus for aviation airborne head-up display Download PDFInfo
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- CN201716174U CN201716174U CN2010202573306U CN201020257330U CN201716174U CN 201716174 U CN201716174 U CN 201716174U CN 2010202573306 U CN2010202573306 U CN 2010202573306U CN 201020257330 U CN201020257330 U CN 201020257330U CN 201716174 U CN201716174 U CN 201716174U
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Abstract
The utility model relates to a parallax measuring apparatus for an aviation airborne head-up display. The prior art can not overcome the influence of the artificial factor upon the parallax reading, therefore, objective or precise measurement is difficult to perform on the parallax, and the adjustment quality and efficiency of products can not be improved. The photoelectric receiving assembly in the device provided in the utility model is composed by a light splitting prism, a Schmidt prism, a CCD receiving object lens and a CCD camera, the light splitting prism is disposed between an ocular lens and a reticle plate with the same optical axis, the CCD receiving object lens and the CCD camera are sequentially located on the light splitting optical axis of the light splitting prism, the Schmidt prism is located at one side of the image of the focusing object lens optical axis. The parallax measuring apparatus in the utility model can completely eliminate reading determination error generated by different people's observation of parallax and eliminate parallax reading determination error by different observers, the parallax measuring apparatus is advantaged by higher measurement precision.
Description
Technical field
The utility model relates to the optical devices technologies field, is specifically related to a kind of equipment that can be used for the detection of head-up display and the high precision parallax measurement in the assembling process, further relates to a kind of parallax measurement device of airborne head-up display.
Background technology
Head-up display is a kind of comprehensive electro-optical display device, is one of important component part of airborne command system, is installed in the top of passenger cabin central control board usually, is the main window of exchange message between pilot and the aircraft.Head-up display this machine of aircraft parameter as height, speed, attitude, course and take off, information such as navigation, approach, after handling as calculated, selectively the form with visicode is presented on the video screen of cathode-ray tube (CRT), after the collimated (focusing at infinity) of optical module, by the combination glass-reflected, make driver's observation again to one group of dynamic glyph image that overlaps with extraneous real background.The head-up display optical system is to adopt the work of collimation principle, request for utilization to this optical system is: the boresight direction that same luminous point provides on the image source must be identical, and the aiming wire harness that same luminous point provides on the image source in other words must be a pencil of parallel lines.The malalignment of the aiming wire harness that same luminous point provides on the image source is called the parallax of head-up display.The malalignment of aiming wire harness can show as convergences, disperses or interlace, and when observe this luminous point that has parallax simultaneously with binocular, when receiving uneven aiming wire harness, eyeball can very easily produce visual fatigue owing to need the anxiety adjusting not feel well.This is to eliminate one of reason of head-up display parallax.Airborne driver's head position can vibrate the variation that has up and down with aircraft, and eyes can not strictness be fixed in same position, and this just requires the boresight direction that same head-up display character provides in whole head position allowed band identical.If parallax is arranged, driver's head is in diverse location will concentrate one's gaze on different directions, thereby brings pointing error.This be must eliminate the head-up display parallax former therefore two.
Want to eliminate the parallax of head-up display, should at first find out the root of its generation, take corresponding countermeasure, the parallax of head-up display could be controlled in the scope of military standard of China at every kind of root.The root that the head-up display parallax produces mainly contains following three kinds: 1) design root 2) processing root 3) adjustment root.
In order to make adjustment reach requirement, eliminate the head-up display parallax that causes because of adjustment, be absolutely necessary thereby carry out parallax measurement elimination parallax.
Traditional parallax measurement method mainly contains two kinds of visibility measure ment method and weavings:
(1) visibility measure ment method is directly to measure the diopter difference of image and graduation picture with diopter cylinder, but this method precision is lower, improve measuring accuracy and can adopt the semi-permeable mirror diopter cylinder to measure,, and can not be used widely because this method is subjected to the restriction of various logo images (graduation sign); Also can adopt stereoscopic parallax apparatus to measure (coming down to a special stereoscopic range finder) in addition, because stereoscopic parallax apparatus can only find that system under test (SUT) has no parallax, and can not read parallax amount, institute thinks the acquisition quantitative measurment, must place the parallel light tube of an adjustable focus at the object space of system under test (SUT), utilizing the method for parallel light tube compensation system under test (SUT) parallax is to read parallax amount from parallel light tube, sees on the slave unit, the method of this measurement parallax obviously is very complicated, and cost is also high.
(2) weaving is present most widely used a kind of method, and this method is directly to swing in the emergent pupil plane with human eye, and obtains the relative changing of the relative positions amount of maximum between image and the graduation picture.Compare with the visibility measure ment method, this method have measure quick and easy, and characteristics such as cost is low.But this method precision is low, in human eye yaw process, find parallax, the decision errors precision depends on whether observer's eyes are located on the emergent pupil plane of optical system, and eyes do about the experience judged of (or up and down) precision, therefore there is certain reading decision errors in different people's observation parallaxes.
In sum, prior art can't overcome the influence of human factor to parallax reading, therefore is difficult to parallax is carried out measurement objective and that precision is higher, also just can't improve product adjustment quality and adjustment efficient.
Summary of the invention
The utility model patent provides a kind of parallax measurement device of airborne head-up display, to overcome the problem that human factor that prior art exists impacts parallax reading.
For overcoming the problem that prior art exists, the technical solution of the utility model is: a kind of parallax measurement device of airborne head-up display, comprise the action adjusting mechanism, the action adjusting mechanism is provided with the visual observation assembly, described visual observation assembly is made up of focusing object lens and eyepiece, graticule is positioned on the focusing focal plane, object lens picture side, its special character is: also comprise the photoelectricity receiving unit, described photoelectricity receiving unit is by Amici prism, Schmidt prism, CCD receiving objective and CCD camera are formed, Amici prism with optical axis be arranged between eyepiece and the graticule, CCD receiving objective and CCD camera are positioned on the beam split optical axis of Amici prism successively, and Schmidt prism is positioned at picture side's one side of focusing objective lens optical axis.
The utility model has designed the two-way receiving system, and one the tunnel is traditional visual observation system, the photoelectric receiving system that another road is made up of receiving objective, CCD camera etc.Compared with prior art, the utility model has the advantages that:
1, can eliminate the reading decision errors that different people is produced fully when observation parallax: adopt the two-way receiving system to realize head-up display is carried out parallax measurement.Visual measuring system can be by eyepiece Direct observation head-up display parallax whether in the margin tolerance that requires, be beneficial to the quick test of product; Photoeletric measuring system can directly be measured the parallax of head-up display in conjunction with the CCD camera, and by computing machine and automatic calculating of special algorithm and demonstration measurement result, this drive test amount can solve different people when observation parallax, the reading decision errors that is produced, and simple to operate, precision is high, speed is fast, objectivity is good, have good repeatability, provide the reliable technique means improving product adjustment quality and adjustment efficient.In order to reduce the volume of stereometer, the shared focusing object lens of two-way receiving system, its relative aperture is 1/4, guaranteed that eyepiece in the visual measuring system and the CCD receiving objective in the photoeletric measuring system and CCD receive enough parallax energy informations, for eye-observation and accurate interpretation of electro-optical system and measurement.A Schmidt prism and an Amici prism in the light path of optical system, have been added, so that human eye observes and photoeletric measuring system can receive the product parallax information simultaneously on 45 degree directions; Optical filter is equipped with in the optical system front, this optical filter both can be protected the internal optics system, prevent that dust from entering, simultaneously only make the light beam of 0.486 μ m～0.650 mu m waveband scope enter optical system again, other band light beam is suppressed, reduced scattered noise, improved the signal to noise ratio (S/N ratio) of system, for the subsequent optical signal Processing provides effective information; In addition, optical system adopts the interior focusing structure, both can realize the focusing range of 254mm～∞, in this scope, can discern under accuracy of identification the parallax of any kind of head-up display.Therefore the utility model can solve different people effectively when observation parallax, and the reading decision errors that is produced can improve product adjustment quality and adjustment efficient.
2, precision height: this parallax instrument can be adjusted and measure head-up display optical system parallax or all kinds of optical system that has cross division line, and but direct quantitative is read parallax value, eliminated the different parallax reading decision errors that produce owing to the observer, the measuring accuracy of total system can reach 30 ".
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model fundamental diagram.
Reference numeral is as follows:
1-eyepiece, 2-Amici prism, 3-graticule, 4-Schmidt prism, the 5-object lens of focusing, 6-CCD receiving objective.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
Referring to Fig. 1, a kind of parallax measurement device of airborne head-up display, comprise the visual observation assembly, described visual observation assembly is made up of focusing object lens 5 and eyepiece 1, graticule 3 is positioned on the focusing focal plane, object lens 5 picture side, its special character is: also comprise the photoelectricity receiving unit, described photoelectricity receiving unit is by Amici prism 2, Schmidt prism 4, CCD receiving objective 6 and CCD camera are formed, Amici prism 2 with optical axis be arranged between eyepiece 1 and the graticule 3, CCD receiving objective 6 and CCD camera are positioned on the beam split optical axis of Amici prism 2 successively, and Schmidt prism 4 is positioned at picture side's one side of focusing object lens 5 optical axises.
Said visual observation assembly (visual optical system) is typical telescopic system, form by focusing object lens 5 and eyepiece 1, graticule 3 is positioned on the focusing focal plane, object lens 5 picture side, can observe the graduation groove picture of parallax instrument and tested instrument in eyepiece 1 emergent pupil plane simultaneously.Focusing object lens 5 have focus adjusting mechanism, and the focusing amount can read from focusing handwheel.
Said photoelectricity receiving unit is made up of CCD receiving objective, CCD and computing machine.The CCD receiving objective receives the Amici prism reflection, and CCD receives imaging, gives computer stored and analysis.
Conventional func such as governor motion such as telescopic system can be realized pitching, horizontally rotates, moves horizontally, vertical moving and carrying fixed mechanism.
Referring to Fig. 2, during use:
1, the debuging on the station of head-up display, tested head-up display is placed between big visual field parallel light tube and the stereometer, adjust big visual field parallel light tube and stereometer, the optical axis of three in certain distance is consistent.
2, adjust eyepiece 1 diopter, make the graduation groove of the clear in the best condition resolution parallax of observer instrument.The visual observation assembly and the photoelectricity receiving unit of parallax instrument are synchronous, adjust the interior focusing handwheel on the parallax instrument object lens, observe by parallax instrument eyepiece or graphoscope, on the graticule 3 of graduation groove blur-free imaging at the parallax instrument on the parallel light tube of big visual field, the reading value on the focusing handwheel is the standard figures of detection system at this moment; Further adjust the interior focusing handwheel, until the graduation picture of seeing clearly in the best condition in the head-up display, the scale value that handwheel relative standard numerical value is turned over is the focusing amount.
3, defocusing amount is imported computing machine, can calculate parallactic angle.By to parallactic angle and out of focus quantitative analysis, adjust the axial location of head-up display dividing plane, finish the adjustment of parallax.Afterwards, residual parallax is carried out final test obtain data, come the parallax of the tested head-up display of interpretation whether to meet design requirement with this.
Claims (1)
1. parallax measurement device of airborne head-up display, comprise the action adjusting mechanism, the action adjusting mechanism is provided with the visual observation assembly, described visual observation assembly is made up of focusing object lens (5) and eyepiece (1), graticule (3) is positioned at focusing object lens (5) as on the square focal plane, it is characterized in that: also comprise the photoelectricity receiving unit, described photoelectricity receiving unit is by Amici prism (2), Schmidt prism (4), CCD receiving objective (6) and CCD camera are formed, Amici prism (2) with optical axis be arranged between eyepiece (1) and the graticule (3), CCD receiving objective (6) and CCD camera are positioned on the beam split optical axis of Amici prism (2) successively, and Schmidt prism (4) is positioned at picture side's one side of focusing object lens (5) optical axis.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202573306U CN201716174U (en) | 2010-07-14 | 2010-07-14 | Parallax measuring apparatus for aviation airborne head-up display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202573306U CN201716174U (en) | 2010-07-14 | 2010-07-14 | Parallax measuring apparatus for aviation airborne head-up display |
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| CN201716174U true CN201716174U (en) | 2011-01-19 |
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| CN2010202573306U Expired - Fee Related CN201716174U (en) | 2010-07-14 | 2010-07-14 | Parallax measuring apparatus for aviation airborne head-up display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865763A (en) * | 2010-07-14 | 2010-10-20 | 西安工业大学 | Parallax measurement device of airborne head-up display |
| CN104359656B (en) * | 2014-11-13 | 2016-12-07 | 中国航空工业集团公司洛阳电光设备研究所 | Small field of view optical system optical parallax detection method and the equipment of enforcement the method |
-
2010
- 2010-07-14 CN CN2010202573306U patent/CN201716174U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865763A (en) * | 2010-07-14 | 2010-10-20 | 西安工业大学 | Parallax measurement device of airborne head-up display |
| CN104359656B (en) * | 2014-11-13 | 2016-12-07 | 中国航空工业集团公司洛阳电光设备研究所 | Small field of view optical system optical parallax detection method and the equipment of enforcement the method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20120714 |