CN110794585A - Binocular alignment calibration method for helmet display - Google Patents
Binocular alignment calibration method for helmet display Download PDFInfo
- Publication number
- CN110794585A CN110794585A CN201910984372.5A CN201910984372A CN110794585A CN 110794585 A CN110794585 A CN 110794585A CN 201910984372 A CN201910984372 A CN 201910984372A CN 110794585 A CN110794585 A CN 110794585A
- Authority
- CN
- China
- Prior art keywords
- target plate
- helmet
- distance
- binocular alignment
- right eye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0189—Sight systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
A binocular alignment calibration method for a helmet display belongs to the field of helmet display adjustment, and relates to a method for calibrating binocular alignment indexes of the helmet display, which comprises the following steps: firstly, measuring the parallax of a collimator with a large visual field under a certain moving distance; secondly, calculating the imaging distance of the light pipe; then, the interpupillary distance and the testing distance of the tester are given, and the distance between the target plates is calculated by utilizing the similar triangle principle; then, manufacturing a target plate according to the calculation result; and finally, according to the binocular alignment calibration principle of the helmet-mounted display, adjusting the product by using the target plate to finish the binocular alignment index calibration of the helmet-mounted display. The invention can calibrate the binocular alignment index of the helmet display under the conditions of non-production environment and equipment absence, can complete the calibration of products on the use site of the helmet display, avoids the return maintenance of the products or the carrying of a large amount of equipment to debug and calibrate the products, greatly improves the maintenance adaptability of the helmet display and is very convenient.
Description
Technical Field
A binocular alignment calibration method for a helmet-mounted display belongs to the field of helmet-mounted display adjustment, relates to a helmet-mounted display calibration method, in particular to a calibration method for binocular alignment indexes of the helmet-mounted display, and is mainly used for calibrating the binocular alignment indexes of the helmet-mounted display under the conditions that the helmet-mounted display is not produced and adjustment equipment is not available.
Background
With the continuous development of the comprehensive technology of the photoelectric aiming display system, the helmet display becomes a new photoelectric aiming display system, and the helmet display directly projects the display picture to the eyes of a wearer, so that the information transmission is faster, more agile and more efficient, and the helmet display is a display device with better development prospect.
The helmet display projects display pictures into the left eye and the right eye of a person through a built-in optical system respectively, and the left eye and the right eye fuse the pictures to complete information transmission. The binocular alignment index of the helmet-mounted display directly influences the display performance of a product, the binocular alignment index of the helmet-mounted display needs to be calibrated to a certain range, the left eye and the right eye of a person can fuse the display images which are independently received, once the binocular alignment index exceeds the index, the eyes of the person cannot complete fusion of the left eye image and the right eye image, the phenomenon of display image double images can occur, and even vertigo symptoms can occur to a wearer.
According to the traditional binocular alignment calibration method for the helmet-mounted display, an adjustment person wears the helmet-mounted display, a display picture is generated by electrifying in front of the large-view-field collimator, the reference of the display picture is compared with the reference of the large-view-field collimator, and the adjustment is carried out. The adjusting method needs the large-view-field collimator and corresponding equipment support, and is easy to realize on a product production site, but the binocular alignment correction of the helmet display is troublesome in places outside the production site, particularly on a customer use site, because the large-view-field collimator and the corresponding equipment need to be equipped and the product is calibrated on different customer sites, the consistency of the product after the product is calibrated is poor due to different calibrators and different site environments. When a customer needs to calibrate a product in the past, production equipment can only be transported to a customer site for assembly and adjustment, or the product is returned to the production site, so that the use of the product is influenced, and the cost is high.
Disclosure of Invention
The purpose of the invention is as follows: in order to improve the maintenance adaptability of the helmet display, the binocular alignment calibration method of the helmet display can be used for calibrating binocular alignment indexes of the helmet display under the conditions that a non-production environment and debugging equipment do not have, can be used for completing product calibration on a product use site, avoids product return maintenance or carrying a large amount of equipment to perform product debugging and calibration, reduces the product maintenance period and maintenance cost, and greatly improves the maintainability of the helmet display.
The technical scheme provided by the invention provides a binocular alignment calibration method for a helmet-mounted display, which is characterized in that according to a binocular alignment principle, a light path of the helmet-mounted display when observing the central target position of a large-view-field collimator is simulated, a left eye reference and a right eye reference are selected, and binocular alignment indexes of the helmet-mounted display are calibrated through the left eye reference and the right eye reference.
Preferably, the binocular alignment calibration method for the helmet display comprises the following steps:
step 2: calculating the imaging distance H of the collimator with the large view field;
and step 3: according to the binocular alignment principle of the helmet display, as long as the pupil distance L of a tester, the target plate placing distance H1 and the light pipe imaging distance H in the step 2 are known, the left and right reference distances L1 on the target plate can be calculated by using similar triangles, and the left and right eye references are respectively determined;
step 4, manufacturing a left and right eye reference target plate according to the calculated left and right reference distance L1;
and 5: and finally, according to the binocular alignment calibration principle of the helmet-mounted display, adjusting the product by using the target plate to finish the binocular alignment index calibration of the helmet-mounted display.
Preferably, the binocular alignment calibration method for the head-mounted display, in step 5, includes:
the target plate is placed at a certain distance away from the test product, a tester wears the product, left and right eye imaging is aligned with a horizontal reference 6 on the target plate, a left eye imaging position 2 is aligned with a left eye reference 3 on the target plate, relative positions of a right eye imaging position 4 and a right eye reference 5 on the target plate are observed, the product is adjusted to enable the right eye imaging position 4 to be aligned with the right eye reference 5 on the target plate, and binocular alignment index calibration of the helmet-mounted display is completed.
Preferably, the binocular alignment calibration method for the head-mounted display, in step 5, includes:
the target plate is placed at a certain distance away from the test product, a tester wears the product, left and right eye imaging is aligned with a horizontal reference 6 on the target plate, a right eye imaging position 4 is aligned with a right eye reference 5 on the target plate, the relative positions of a left eye imaging position 2 and a left eye reference 3 on the target plate are observed, the product is adjusted to enable the left eye imaging position 2 to be aligned with the left eye reference 3 on the target plate, and binocular alignment index calibration of the helmet-mounted display is completed.
5. The binocular alignment calibration method for the head-mounted display according to claim 2, wherein the step 3 comprises:
the pupil distance L of the tester is a known quantity, the target plate placing distance H1 is determined according to the requirement of a test site, the central imaging distance H of the collimator in the large field of view is obtained by calculation in the step 2, and the left and right eye references can be obtained by calculating the left and right reference distance L1 on the target plate by using a similar triangle.
Preferably, the binocular alignment calibration method for the helmet-mounted display can give different interpupillary distances L according to different testers when the target plate spacing is calculated, give different target plate placing distances H1 according to different site sizes, calculate corresponding target plate left and right reference distances L1, and manufacture different target plates to meet the test requirements of different testers and sites with different sizes.
The invention has the advantages that: the invention can calibrate the binocular alignment index of the helmet display under the conditions of non-production environment and unavailable debugging equipment, can rapidly complete product calibration on the product use site according to corresponding calibration target plates manufactured by different testers and different size sites, avoids product return maintenance or product debugging and calibration carried by a large amount of equipment, reduces the product maintenance period and maintenance cost, and greatly improves the maintainability of the helmet display.
Drawings
FIG. 1 is a schematic view of the binocular alignment principle of a head mounted display;
FIG. 2 is a schematic view of a target plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
The present invention is described in further detail below.
A binocular alignment calibration method for a helmet display is characterized by comprising the following steps: firstly, measuring the parallax of a collimator with a large visual field under a certain moving distance; secondly, calculating the imaging distance of the light pipe; then, the interpupillary distance and the testing distance of the tester are given, and the distance between the target plates is calculated by utilizing the similar triangle principle; then, manufacturing a target plate according to the calculation result; and finally, according to the binocular alignment calibration principle of the helmet-mounted display, adjusting the product by using the target plate to finish the binocular alignment index calibration of the helmet-mounted display.
The method comprises the following specific steps:
and step 3: according to the binocular alignment principle of the helmet display, the interpupillary distance L of a tester is the distance between a left eye imaging position 2 and a right eye imaging position 4, the target plate placing distance H1 is the distance between a target plate and human eyes, the left and right reference distance L1 of the target plate is the distance between a left eye reference 3 and a right eye reference 5, the left and right reference distances L1 on the target plate are calculated by using similar triangles, different interpupillary distances L and target plate placing distances H1 can be given according to different testers and different field sizes during calculation, and the corresponding left and right reference distances L1 of the target plate are calculated, so that the target plate is suitable for different people and different field sizes;
and 4, step 4: manufacturing a target plate with a left-right eye reference distance of L1 according to the calculation result;
and 5: the target plate is placed at a distance H1 from the test product, a tester wears the product, left and right eye imaging is aligned with a horizontal reference 6 on the target plate, a left eye imaging position 2 is aligned with a left eye reference 3 on the target plate, relative positions of a right eye imaging position 4 and a right eye reference 5 on the target plate are observed, the product is adjusted to enable the right eye imaging position 4 to be aligned with the right eye reference 5 on the target plate, and binocular alignment index calibration of the helmet-mounted display is completed.
In one embodiment of the present invention, a tester is required to perform a binocular alignment calibration of the head mounted display at the customer site. The method comprises the following steps:
step 1: measuring the parallax of the collimator with a large visual field at the early stage to be 3.5', wherein the horizontal movement distance is 0.1 m;
step 2: calculating the imaging distance H of the collimator with the large field of view to be 0.1m/tan 3.5' to be 100 m;
and step 3: the pupil distance L of the tester is 64mm, the target plate placing distance H1 is 2m, and the left and right reference distance L1 is (100-2)/100 × 64mm is 62.72mm by using a similar triangle L1/L is (H-H1)/H;
and 4, step 4: manufacturing a target plate with the reference distance L1 of the left eye and the right eye being 62.72mm according to the calculation result;
and 5: the target plate is placed at a distance of 2m away from the test product, a tester wears the product, left and right eye imaging is aligned with a horizontal reference 6 on the target plate, a left eye imaging position 2 is aligned with a left eye reference 3 on the target plate, relative positions of a right eye imaging position 4 and a right eye reference 5 on the target plate are observed, the product is adjusted to the right eye imaging position 4 and the right eye reference 5 on the target plate are aligned, and binocular alignment index calibration of the helmet-mounted display is completed.
The calibration may also be accomplished by aligning the right eye imaging position 4 with the right eye reference 5 and adjusting the left eye imaging position 2.
Claims (6)
1. A binocular alignment calibration method for a helmet display is characterized by comprising the following steps: according to a binocular alignment principle, simulating a light path of a helmet display when the helmet display observes the central target position of a large-view-field collimator, selecting a left eye reference and a right eye reference, and calibrating binocular alignment indexes of the helmet display through the left eye reference and the right eye reference.
2. The binocular alignment calibration method of the head-mounted display according to claim 1, comprising the steps of:
step 1, measuring the parallax of a collimator with a large visual field, and recording the horizontal movement distance when the parallax is measured;
step 2: calculating the imaging distance H of the collimator with the large view field;
and step 3: according to the binocular alignment principle of the helmet display, as long as the pupil distance L of a tester, the target plate placing distance H1 and the light pipe imaging distance H in the step 2 are known, the left and right reference distances L1 on the target plate can be calculated by using similar triangles, and the left and right eye references are respectively determined;
step 4, manufacturing a left and right eye reference target plate according to the calculated left and right reference distance L1;
and 5: and finally, according to the binocular alignment calibration principle of the helmet-mounted display, adjusting the product by using the target plate to finish the binocular alignment index calibration of the helmet-mounted display.
3. The binocular alignment calibration method for the head-mounted display according to claim 2, wherein the step 5 comprises:
the target plate is placed at a certain distance away from the test product, a tester wears the product, left and right eye imaging is aligned with a horizontal reference 6 on the target plate, a left eye imaging position 2 is aligned with a left eye reference 3 on the target plate, relative positions of a right eye imaging position 4 and a right eye reference 5 on the target plate are observed, the product is adjusted to enable the right eye imaging position 4 to be aligned with the right eye reference 5 on the target plate, and binocular alignment index calibration of the helmet-mounted display is completed.
4. The binocular alignment calibration method for the head-mounted display according to claim 2, wherein the step 5 comprises:
the target plate is placed at a certain distance away from the test product, a tester wears the product, left and right eye imaging is aligned with a horizontal reference 6 on the target plate, a right eye imaging position 4 is aligned with a right eye reference 5 on the target plate, the relative positions of a left eye imaging position 2 and a left eye reference 3 on the target plate are observed, the product is adjusted to enable the left eye imaging position 2 to be aligned with the left eye reference 3 on the target plate, and binocular alignment index calibration of the helmet-mounted display is completed.
5. The binocular alignment calibration method for the head-mounted display according to claim 2, wherein the step 3 comprises:
the pupil distance L of the tester is a known quantity, the target plate placing distance H1 is determined according to the requirement of a test site, the central imaging distance H of the collimator in the large field of view is obtained by calculation in the step 2, and the left and right eye references can be obtained by calculating the left and right reference distance L1 on the target plate by using a similar triangle.
6. The binocular alignment calibration method of the helmet-mounted display according to claim 5, wherein different interpupillary distances L can be given according to different testers when calculating the target plate spacing, different target plate placement distances H1 can be given according to different field sizes, the corresponding left and right reference distances L1 of the target plates can be calculated, and different target plates can be manufactured to meet the test requirements of different testers and fields of different sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984372.5A CN110794585B (en) | 2019-10-16 | 2019-10-16 | Binocular alignment calibration method for helmet display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984372.5A CN110794585B (en) | 2019-10-16 | 2019-10-16 | Binocular alignment calibration method for helmet display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110794585A true CN110794585A (en) | 2020-02-14 |
| CN110794585B CN110794585B (en) | 2022-05-24 |
Family
ID=69440322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910984372.5A Active CN110794585B (en) | 2019-10-16 | 2019-10-16 | Binocular alignment calibration method for helmet display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110794585B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692708A (en) * | 2012-06-15 | 2012-09-26 | 中航华东光电有限公司 | Method for regulating two ocular optical systems of helmet display |
| CN105091849A (en) * | 2014-05-05 | 2015-11-25 | 南京理工大学 | Optical axis nonlinear binocular range finding method |
| US20170099482A1 (en) * | 2015-10-02 | 2017-04-06 | Atheer, Inc. | Method and apparatus for individualized three dimensional display calibration |
| CN109040738A (en) * | 2014-07-10 | 2018-12-18 | 精工爱普生株式会社 | It is calibrated using the head-mounted display of direct Geometric Modeling |
| CN109300146A (en) * | 2018-08-29 | 2019-02-01 | 博瓦（武汉）科技有限公司 | A kind of binocular distance measuring method of band point cloud reparation |
| WO2019085487A1 (en) * | 2017-10-30 | 2019-05-09 | 华为技术有限公司 | Display apparatus and method and device for adjusting image display of the display apparatus |
-
2019
- 2019-10-16 CN CN201910984372.5A patent/CN110794585B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692708A (en) * | 2012-06-15 | 2012-09-26 | 中航华东光电有限公司 | Method for regulating two ocular optical systems of helmet display |
| CN105091849A (en) * | 2014-05-05 | 2015-11-25 | 南京理工大学 | Optical axis nonlinear binocular range finding method |
| CN109040738A (en) * | 2014-07-10 | 2018-12-18 | 精工爱普生株式会社 | It is calibrated using the head-mounted display of direct Geometric Modeling |
| US20170099482A1 (en) * | 2015-10-02 | 2017-04-06 | Atheer, Inc. | Method and apparatus for individualized three dimensional display calibration |
| WO2019085487A1 (en) * | 2017-10-30 | 2019-05-09 | 华为技术有限公司 | Display apparatus and method and device for adjusting image display of the display apparatus |
| CN109300146A (en) * | 2018-08-29 | 2019-02-01 | 博瓦（武汉）科技有限公司 | A kind of binocular distance measuring method of band point cloud reparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110794585B (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102944935B (en) | Binocular head-wearing display device and method thereof for adjusting image spacing | |
| CN105866949B (en) | The binocular AR helmets and depth of field adjusting method of the depth of field can be automatically adjusted | |
| JP6368872B1 (en) | Individual data measurement of glasses | |
| CN103763550B (en) | Method for fast measuring crosstalk of stereoscopic display | |
| US20190246889A1 (en) | Method of determining an eye parameter of a user of a display device | |
| CN206627077U (en) | A kind of freeform optics surface detection means for heavy caliber depth rise | |
| US7794085B2 (en) | Method and device for determining the eye's rotation center | |
| US10429669B2 (en) | Method and system for improving an ophthalmic prescription | |
| CN109922707A (en) | Method for determining the eye parameters of the user of display device | |
| WO2014112626A1 (en) | Prism prescription value acquisition system, acquisition method, acquisition device, and program for correcting fixation disparity | |
| US20210325276A1 (en) | Method and device for measuring an optical lens for individual wearing situations by a user | |
| CN109528156A (en) | A kind of self-help intelligent visual function screening system | |
| CN204578692U (en) | Three-dimensional display system | |
| CN110794585B (en) | Binocular alignment calibration method for helmet display | |
| CN102404605A (en) | Method and device for measuring crosstalk of 3D display system | |
| CN111868605B (en) | Method of calibrating a display device wearable on a user's head for a specific user for enhancing the display | |
| CN111505837A (en) | Sight distance detection automatic zooming optical system based on binocular imaging analysis | |
| CN203039817U (en) | Device for measuring visual angle of stereoscopic television | |
| CN205079860U (en) | 3D display effect testing arrangement | |
| CN106445174A (en) | Virtual reality helmet distortion verification method and device | |
| CN109729349B (en) | Naked eye screen test system and test method thereof | |
| CN107014592A (en) | Safety goggles visual field detecting system and detection method | |
| CN103512731B (en) | The measuring method of vertex lens power after a kind of eyeglass | |
| CN103118271A (en) | Testing device and testing method of three-dimensional television visible angles | |
| CN201359493Y (en) | Stadia distance and walk-off angle detection device used on simulated training virtual image display system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |