CN101509767B - Viewing distance and walk-off angle detecting method and device for simulation training virtual image display system - Google Patents
Viewing distance and walk-off angle detecting method and device for simulation training virtual image display system Download PDFInfo
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- CN101509767B CN101509767B CN2009100665095A CN200910066509A CN101509767B CN 101509767 B CN101509767 B CN 101509767B CN 2009100665095 A CN2009100665095 A CN 2009100665095A CN 200910066509 A CN200910066509 A CN 200910066509A CN 101509767 B CN101509767 B CN 101509767B
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Abstract
The invention provides a method and a device for testing the sight distance and walk-off angle of a simulated training virtual image display system. The device consists of a laser, an optical combined mechanism and other devices. A telescope objective group, a prism group, a beam splitter, a two-dimensional silicon photoelectric displacement transducer and an ocular group of the optical combined mechanism are sequentially arranged and parallel to the axis of a semi-conductor laser; the transmitted light of the laser is radiated toward the direction needing to be tested of the virtual image display system, the telescope objective group receives the reflected light that is imaged on an image surface; the light is reflected for a plurality of times by the prism group and then divided into two beams of light by the beam splitter; a beam of light passes through the ocular group to be imaged on an observation area; and the other beam of light enters the two-dimensional silicon photoelectricdisplacement transducer and an A/D converting and feeding singlechip to process and display data. The method and the device can carry out the quantized measurement of the sight distance and walk-off angle of a large viewing field virtual image display system by imitating the principle that human eyes observe an object for sight distance judgment.
Description
Technical field
The present invention discloses the method for a kind of simulation training virtual image display system sighting distance and walk-off angle, be to carry out display system sighting distance and walk-off angle detection according to eye-observation object method at the fly simulation training virtual image display system, the pick-up unit that is applicable to this method also is provided simultaneously, has belonged to the optical test equipment field.
Background technology
According to the needs of present fly simulation training what comes into a driver's virtual image display device development, require a kind of eye-observation object that imitates of invention to carry out the virtual image display system proving installation that sighting distance is judged principle.This is because fly simulation training virtual image display device can not adopt conventional entity chi to detect, laser ranging also can't be finished virtual image distance detecting, owing to adopt penlight, must carry out display system sighting distance and walk-off angle according to the mode of eye-observation image and detect and to satisfy the detection needs that the virtual image of fly simulation training what comes into a driver's shows from the imaging shaft mode.The product of present domestic no the type.
Summary of the invention
The present invention discloses the method that a kind of simulation training virtual image display system sighting distance and walk-off angle detect, and can imitate the eye-observation object and carry out the principle that sighting distance judges and carry out the sighting distance of big visual field virtual image display system and the measures of quantization of walk-off angle.
The invention also discloses the pick-up unit that is applicable to said method, solved the problem that virtual image display system detects, this equipment volume is little, and is easy to use, detects accurately.
Technical solution of the present invention is as follows: form scattered reflection light by the laser instrument emission laser beam through virtual image display system, the reflection ray of the telephotolens group of received laser beam of optics combined mechanism, this reflection ray is imaged on the image planes, after the repeatedly reflection by the prism group, be divided into two bundle light through spectroscope again; Ray Of Light is imaged on by the eyepiece group and observes the district; Another bundle light enters two-dimentional silicon photoelectric displacement sensor, and the offset distance of formation and optical centre position causes the variation of silicon semiconductor hole migration speed, causes the two ends potential change, puts detection and finish spot displacement; 2 D photoelectric displacement transducer two ends potential change is transformed into numerical value by calculating to be shown on data presentation device, the offset distance of luminous point and optical centre position on the numerical value representative sensor interface calculates sighting distance and walk-off angle that this distance can be extrapolated this point.
Be applicable to above-mentioned detection method device, concrete structure is as follows:
Form by laser instrument, optics combined mechanism, A/D conversion and data processing single-chip microcomputer, data presentation device, the optics combined mechanism comprises that telephotolens group, prism group, spectroscope, two-dimentional silicon photoelectric displacement sensor and eyepiece group place successively and form integral body by physical construction, its optical main axis is connected to become straight line, and with the semiconductor laser parallel axes at a distance of 60mm ~ 65mm; The laser instrument emission detects and points to the orientation that laser rays directive virtual image display system need detect, the reflection ray of the telephotolens group of received laser instrument of optics combined mechanism, this reflection ray is imaged on the image planes, after the repeatedly reflection by the prism group, light is divided into two bundle light through spectroscope again; Ray Of Light is imaged on by the eyepiece group and observes the district; Another bundle light enters two-dimentional silicon photoelectric displacement sensor, and two-dimentional silicon photoelectric displacement sensor is defeated by single-chip microcomputer with the potential change signal through the A/D conversion and is handled and video data.
Prism group in the above-mentioned optics combined mechanism by two primary event right-angle prisms and one repeatedly reflecting prism combine; Spectroscope is made of a semi-transparent semi-reflecting right-angle prism of analysing light and unidimensional another piece right-angle prism gummed.
The eye-observation object carries out the principle that sighting distance is judged: when binocular vision object point A, two the optical axis is aimed at object point A, and the angle between two optical axis is called parallactic angle, and the line of 2 ophthalmic segment points is called the vision baseline.Object is far and near different, the parallactic angle difference.If two object points and observer's distance is different, their formed pictures in two have different distances with the macula lutea center, i.e. the corresponding different parallactic angle of the object of different distance.
Enthusiasm of the present invention place: disclose a kind of eye-observation object that imitates and carried out principle that sighting distance judges and carry out the device that simulation training virtual image display system sighting distance and walk-off angle detect, can carry out the sighting distance of big visual field virtual image display system and the measures of quantization of walk-off angle, detect accurately.Adopt structures such as rib type mirror group, make equipment volume little, easy to use, be easy to carry.
The invention solves the problem that simulation training virtual image display system detects, imitation eye-observation object carries out the principle that sighting distance is judged, can finish the sighting distance of big visual field virtual image display system and the measures of quantization of walk-off angle.
Description of drawings
Fig. 1 is apparatus of the present invention structure principle chart;
1, semiconductor laser; 2, telephotolens group; 3, prism group; 4, spectroscope; 5, two-dimentional silicon photoelectric displacement sensor; 6, eyepiece group; 7, observe the district; 8---the A/D conversion; 9, single-chip microcomputer;
Fig. 2 detects light path principle figure for the present invention
Embodiment
As shown in Figure 1, form by laser instrument 1, optics combined mechanism, A/D conversion 8 and data processing single-chip microcomputer 9, the optics combined mechanism comprises that telephotolens group 2, prism group 3, spectroscope 4, two-dimentional silicon photoelectric displacement sensor 5 and eyepiece group 6 place successively and form integral body by physical construction, its actual optical main axis is connected to become straight line, and with semiconductor laser 1 parallel axes at a distance of 60mm ~ 65mm; Wherein, telephotolens group 2 is made up of protruding, recessed two kinds of lens, lens combination radius 50mm, thickness 10mm; Prism group 3 is made up of three prisms, and overall dimensions is 50mm * 30mm * 50mm; Spectroscope is of a size of 50mm * 50mm * 50mm; Spectroscope 4 is made of a semi-transparent semi-reflecting right-angle prism of analysing light and unidimensional another piece right-angle prism gummed, and two-dimentional silicon photoelectric displacement sensor 5 apparent sizes are 30mm * 20mm, and effective dimensions is 20mm * 20mm, thickness 10mm; Eyepiece group 6 is made up of two groups of lens combination, is divided into protruding, recessed two kinds of lens, lens combination radius 25mm, thickness 20mm.According to The Calculation of Optical Path result assembling, the image planes adjustable positions of telephotolens lens combination and eyepiece group is convenient to the debugging of device to overall dimension in device.
Laser instrument 1 emission detects and points to the orientation that laser rays directive virtual image display system need detect, the telephotolens group 2 of optics combined mechanism receives the reflection ray of laser instrument 1, this reflection ray is imaged on the image planes, after the repeatedly reflection by prism group 3, light is divided into two bundle light through spectroscope 4 again; Ray Of Light is imaged on by eyepiece group 6 and observes district 7; Another bundle light enters two-dimentional silicon photoelectric displacement sensor 5, and two-dimentional silicon photoelectric displacement sensor 5 is defeated by single-chip microcomputer 9 with the potential change signal through the A/D conversion and is handled and video data.
Claims (3)
1. the detection method of simulation training virtual image display system sighting distance and walk-off angle, form the reflection ray of scattering through virtual image display system by the laser instrument emission laser beam, the reflection ray of the telephotolens group of received laser beam of optics combined mechanism, this reflection ray is imaged on the image planes, after the repeatedly reflection by the prism group, be divided into two bundle light through spectroscope again; Ray Of Light is imaged on by the eyepiece group and observes the district; Another bundle light enters two-dimentional silicon photoelectric displacement sensor, and the offset distance of formation and optical centre position causes the variation of silicon semiconductor hole migration speed, causes the two ends potential change, detects and finish spot displacement; 2 D photoelectric displacement transducer two ends potential change is transformed into numerical value by calculating to be shown on data presentation device, the offset distance of luminous point and optical centre position on the numerical value representative sensor interface calculates sighting distance and walk-off angle that this distance can be extrapolated this point.
2. the pick-up unit of the described method of claim 1, it is characterized in that: form by semiconductor laser (1), optics combined mechanism, A/D conversion (8) and data processing single-chip microcomputer (9), the optics combined mechanism comprises that telephotolens group (2), prism group (3), spectroscope (4), two-dimentional silicon photoelectric displacement sensor (5) and eyepiece group (6) place successively and form integral body by physical construction, its optical main axis is connected to become straight line, and with semiconductor laser (1) parallel axes setting; Semiconductor laser (1) emission detects and points to the orientation that laser rays directive virtual image display system need detect, the telephotolens group (2) of optics combined mechanism receives the reflection ray of semiconductor laser (1), this reflection ray is imaged on the image planes, after the repeatedly reflection by prism group (3), light passes through spectroscope (4) again and is divided into two bundle light; Ray Of Light is imaged on by eyepiece group (6) and observes district (7); Another bundle light enters two-dimentional silicon photoelectric displacement sensor (5), and two-dimentional silicon photoelectric displacement sensor (5) is defeated by single-chip microcomputer (9) with the potential change signal through the A/D conversion and is handled and video data.
3. device according to claim 2 is characterized in that: the prism group (3) in the optics combined mechanism by two primary event right-angle prisms and one repeatedly reflecting prism combine; Spectroscope (4) is made of a semi-transparent semi-reflecting right-angle prism of analysing light and unidimensional another piece right-angle prism gummed.
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| CN2009100665095A CN101509767B (en) | 2009-02-11 | 2009-02-11 | Viewing distance and walk-off angle detecting method and device for simulation training virtual image display system |
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| CN2009100665095A CN101509767B (en) | 2009-02-11 | 2009-02-11 | Viewing distance and walk-off angle detecting method and device for simulation training virtual image display system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607407A (en) * | 2012-03-19 | 2012-07-25 | 复旦大学 | Telescope-based multifunctional digital photoelectric measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607407A (en) * | 2012-03-19 | 2012-07-25 | 复旦大学 | Telescope-based multifunctional digital photoelectric measuring system |
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