CN106324833A - Method of designing projection-type helmet objective lens with ideal retina imaging as target - Google Patents
Method of designing projection-type helmet objective lens with ideal retina imaging as target Download PDFInfo
- Publication number
- CN106324833A CN106324833A CN201610805900.2A CN201610805900A CN106324833A CN 106324833 A CN106324833 A CN 106324833A CN 201610805900 A CN201610805900 A CN 201610805900A CN 106324833 A CN106324833 A CN 106324833A
- Authority
- CN
- China
- Prior art keywords
- helmet
- projection
- lens
- retina
- objective lens
- 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.)
- Pending
Links
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
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
-
- 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
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- 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
- G02B27/0101—Head-up displays 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
- G02B27/0172—Head mounted characterised by optical features
Abstract
The embodiment of the invention discloses a method of designing a projection-type helmet objective lens with ideal retina imaging as a target. A helmet wearer eye optical system is arranged at the projection-type helmet objective lens exit pupil position which is the first face of the eye optical system, that is, the front surface of cornea is located at the helmet objective lens exit pupil position. The projection-type helmet objective lens is composed of seven lenses, partial or all parameters such as curvature radiuses of front faces and rear faces of the seven lenses for forming the projection-type helmet objective lens, lens thicknesses and distances between the lenses are set to be variables, the optimization target is to obtain an ideal image on the helmet wearer retina, the optimization target is that the external information image obtained on the retina is minimum in aberration and maximum in resolution, and optimization design is carried out on the projection-type helmet objective lens.
Description
Technical field
The present invention relates to optical field, particularly relate to the projection head of the image quality obtained at actual eyes retina
Helmet objective designing method.
Background technology
Headgear system shows in commercial production, microtechnique, medical treatment, computer entertainment, palmtop, virtual reality, solid
Show, there is important application in palmtop, the field such as simulation training, and this requires that headgear system image quality is high, portable construction is compact
Convenient with wearer comfortable, the optical system that thus be accordingly used in Helmet Mounted Display not only should have high-resolution, big visual field, big emergent pupil
The optical property such as diameter and big distance of exit pupil, and structurally to simplify light.For based on eyepiece optical system
For direct-view Helmet Mounted Display and perspective Helmet Mounted Display, big visual field, big distance of exit pupil and big exit pupil diameter, it is meant that big weight
Amount, large volume and distorting greatly, even if using binary optical elements, free form surface can not fundamentally solve the height of headgear system
Performance and light littleization problem.Head-mounted projective displays (the headmounted projective that twentieth century end grows up
Displays, HMPDs) there is compared with eyepiece system light weight, volume visual field little, big, low distortion, big distance of exit pupil and go out greatly
Pupil diameter, real-world object and dummy object correct " inaccessible ", the degree of depth perception, virtual information can be limited in particular space, multiplex
The feature such as it does not interfere with each other under the environment of family, make it show huge using value.
External information is supplied to human eye by Helmet Mounted Display, is finally received by human eye, on the retina imaging, is then passed through
Optic nerve uploads to visual centre, carries out the processing of information at cerebral cortex, arranges and apply.So, Helmet Mounted Display imaging
Quality should be evaluated by the picture element on human eye retina, thus, helmet display optical system design is it is also contemplated that human eye
The imaging contexts of optical system.People are when helmet design of Optical System, and majority is all by entrance pupil (the i.e. headgear system of human eye
Emergent pupil) carry out ray tracing to image source (micro-display), last image quality evaluation spouts in micro-display space row.Y.Ha is first
Having carried out the evaluation in visual space of the helmet optical system, he carries out visual space with perfect lens simulation human eye to helmet optical system
Evaluate；Zhao Shunlong remains and human eye is reduced to perfect lens helmet optical system in the case of " eye rotation " is carried out visual space
Evaluate；The eye model that Fan Haiying uses Hwey-Lan Liou to propose replaces human eye, is evaluated headgear system in visual space,
And devise projection helmet object lens based on eye model.Hwey-Lan Liou eye model systematic parameter is the flat of numerous human eye
Average, headgear system based on eye model design does not mate with the individual optics of the eye system of wearer, and headgear system is regarding sky
Between evaluation result do not conform to the actual conditions yet.So helmet object lens of design the most really consider helmet wearer optics of the eye system
Aberration, then the aberration of wearer's optics of the eye system can reduce the resolution of retinal images, reduces the definition of image.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of with actual persons optics of the eye system ideal image as target
Projection helmet objective designing method.The method is in helmet objective lens design, it is contemplated that the picture of helmet wearer optics of the eye system
Difference situation, and is corrected, make helmet wearer pass through external information image resolution ratio that the helmet obtains on the retina is higher,
Apparent.
The invention discloses the projection helmet objective designing method with actual eyes retina ideal image as target, the party
Method includes projection helmet objective lens optical system, spectroscope, reflection-type screen and helmet wearer actual optics of the eye system.
Described projection helmet objective lens optical system uses and be suitable to big view field imaging counter to take the photograph remote system is the projection helmet
The initiating structure of object lens；This projection helmet object lens initiating structure includes 7 lens；Near image source (micro display in 7 lens
Device) three lens form the first optical system, the focal power of the first optical system is negative, makes divergence of beam, so near image source
The light angle of visual field of (micro-display) is relatively big, and the most more external information enters headgear system；Near human eye in 7 lens
Four lens form the second optical system, and the focal power of the second optical system is just, makes convergence of rays, and so light near human eye regards
Rink corner diminishes, and owing to the angle of visual field is the least, optical aberration is the least, and therefore the light angle of visual field near human eye diminishes beneficially light
System aberration is corrected.
Described spectroscope becomes-45° angle with the optical axis of projection helmet objective lens optical system, i.e. rotates counterclockwise from optical axis
45 ° is spectroscopical position.
Before described reflection-type screen is placed in projection image formed by projection helmet objective lens optical system.
Described wearer actual optics of the eye system includes cornea, anterior chamber, crystalline lens, vitreous body and retina；Optics of the eye system
System is placed in projection helmet object lens exit pupil position, i.e. opthalmic optics's system first, and namely anterior surface of cornea is in helmet thing
Mirror exit pupil position, the light that such image source (micro-display) sends, after projection helmet object lens, enters wearer's eye
System, then arrives retina image-forming.Therefore, the image of the external information shown when image source (micro-display) is imaged on and regards
Time on nethike embrane, retina epigraph had both included the aberration of projection helmet object lens, also included wearer's optics of the eye system
Aberration.
The present invention is in projection helmet objective lens design process, by 7 lens front-backs of composition projection helmet object lens
Part or all of parameter in distance between radius of curvature, lens thickness, lens is set to variable；With on wearer's retina
Obtaining ideal image is optimization aim, and the external information image aberration obtained the most on the retina is minimum, resolution is to the maximum excellent
Change target, projection helmet object lens are optimized.The light that so image source (micro-display) sends is through the projection helmet
After object lens and wearer's optics of the eye system, arriving retina image-forming, the image of the external information obtained the most on the retina was both
Correct the aberration of projection helmet object lens, also correct the aberration of wearer's optics of the eye system.The projection obtained after optimization
The aberration of projection helmet object lens both corrected by helmet object lens, had also corrected the aberration of wearer's optics of the eye system.The method sets
The projection helmet object lens of meter ensure that and obtain the external information image that aberration is minimum, resolution is maximum on wearer's retina.
Accompanying drawing explanation
Fig. 1 is the present invention projection helmet objective designing method schematic diagram with eyes retina ideal image as target.
Fig. 2 is that on micro-display, the external information image of display by embodiment of the present invention projection helmet object lens and is worn
After person's optics of the eye system, modulation transfer function (MTF) (the Modulation Transfer of imaging on retina under 66 ° of angles of visual field
Function, MTF) curve chart.
Fig. 3 is that on micro-display, the external information image of display by embodiment of the present invention projection helmet object lens and is worn
After person's optics of the eye system, the curvature of field figure of imaging on the retina under 66 ° of angles of visual field.
Fig. 4 is that on micro-display, the external information image of display by embodiment of the present invention projection helmet object lens and is worn
After person's optics of the eye system, the distortion figure of imaging on the retina under 66 ° of angles of visual field.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the embodiment of the present invention
It is described in further detail.
As it is shown in figure 1, the light 2 that on image source i.e. micro-display 1, the external information image of display sends is through projection
After helmet object lens 17, by becoming with optical axis 18-(symbol of angle is consistent, i.e. with acute angle with the symbolic rule in Application Optics for 45° angle
Tolerance, is forwarded to minute surface by optical axis, is counterclockwise negative) the half-reflection and half-transmission spectroscope 19 placed reflects to form projection image 20, back-to-screen
Before screen 21 is placed in projection image 20, the most actually light is formed without projection image 20, but back-to-screen screen 21 make incident ray 2 by
Backtracking, and arrive at the emergent pupil 22 of projection helmet object lens 17 through spectroscope 19；Wearer's actual optics of the eye system 29
Being positioned at first of the position of emergent pupil 22, i.e. opthalmic optics's system 29, namely anterior surface of cornea 23 is positioned at the position of emergent pupil 22；
The light 2 arriving emergent pupil 22 enters wearer's actual optics of the eye system 29, through cornea 24, anterior chamber 25, crystalline lens 26, vitreous body
27, finally arrive retina 28, and the external information image of display on micro-display 1 is imaged on retina 28.
As it is shown in figure 1, projection helmet object lens 17 use, be suitable to big view field imaging counter to take the photograph remote system be initiating structure；Should
The initiating structure of projection helmet object lens 17 includes 7 lens, respectively L1, L2, L3, L4, L5, L6 and L7；Wherein near micro-
Three lens L1, L2 and L3 of display 1 form the first optical system, and the focal power of the first optical system is negative, makes divergence of beam, this
Sample is relatively big near the field angle of object of micro-display 1, and the most more external information enters headgear system；Near opthalmic optics it is
Four lens L4, L5, L6 and L7 of system 29 form the second optical system, and the focal power of the second optical system is just, makes convergence of rays, this
Sample diminishes near the field angle of image of opthalmic optics's system 29, and owing to the angle of visual field is the least, optical aberration is the least, the most close
The field angle of image of opthalmic optics's system 29 diminish beneficially optical aberration correct.
In projection helmet object lens 17 design process, by the lens L1 front surface 3 of composition projection helmet object lens 17 and after
The radius of curvature on surface 4, L1 front surface 3 and the distance of rear surface 4, lens L2 front surface 5 and the radius of curvature of rear surface 6, L2
Front surface 5 and the distance of rear surface 6, lens L3 front surface 7 and the radius of curvature of rear surface 8, L3 front surface 7 and rear surface 8
Distance, lens L4 front surface 9 and the radius of curvature of rear surface 10, L4 front surface 9 and the distance of rear surface 10, lens L5 front surface
11 and the radius of curvature of rear surface 12, L5 front surface 11 and the distance of rear surface 12, lens L6 front surface 13 and rear surface 14
Table before radius of curvature, L6 front surface 13 and the distance of rear surface 14, lens L7 front surface 15 and the radius of curvature of rear surface 16, L7
Several or whole parameters in the parameters such as the distance of face 15 and rear surface 16 are variable, to obtain ideal on wearer's retina 28
Image is optimization aim, and the external information image aberration i.e. obtained on retina 28 is minimum, resolution is optimization aim to the maximum,
Projection helmet object lens 17 are optimized.Projection helmet object lens both corrected by the projection helmet object lens 17 obtained after optimization
The aberration of 17, has also corrected the aberration of wearer's optics of the eye system 29.The projection helmet object lens 17 of the method design ensure that
The external information image that aberration is minimum, resolution is maximum is obtained on wearer's retina 28.
Table 1 is according to the present invention projection helmet object lens 17 with actual eyes retina 28 ideal image as target design
Embodiment.The operation wavelength of the present embodiment projection helmet object lens 17 is visible ray, and maximum field of view angle is 66 °, and effective focal length is
24mm, exit pupil diameter is 10mm, and distance of exit pupil is more than 25mm.
Table 1
Fig. 2 is that on micro-display 1, the external information image of display by above-described embodiment projection helmet object lens 17 and is worn
After wearer's optics of the eye system 29 on retina 28 the modulation transfer function curve of imaging, its abscissa is spatial frequency,
Vertical coordinate is modulation degree.Lowest modulation degree required for human eye is 0.2, then when modulation degree is 0.2, and the horizontal seat that MTF curve is corresponding
It is designated as human eye ultimate resolution.The meansigma methods of resolution of eye is 58cycles/mm, and when in Fig. 2, modulation degree is 0.2,66 ° regard greatly
Under rink corner, the ultimate resolution of optogram arrives 71cycles/mm, exceeds well over the average mark resolution of human eye, this is because projection
The result that the aberration of opthalmic optics's system 29 is corrected by formula helmet object lens 17 design process.
The human eye that gullstrand-Le is given meansigma methods of the curvature of field under 66 ° of angles of visual field is 0.49mm, the meansigma methods of distortion
It is 21.0%.In Fig. 3, on micro-display 1, the external information image of display passes through embodiment of the present invention projection helmet object lens 17 He
After wearer's optics of the eye system 29, under 66 ° of angles of visual field, on retina, the curvature of field of imaging is 0.25mm, average much smaller than human eye
The curvature of field.In Fig. 4, on micro-display 1, the external information image of display by embodiment of the present invention projection helmet object lens 17 and is worn
After person's optics of the eye system 29, under 66 ° of angles of visual field, the distortion of imaging is 2.4% on the retina, the most abnormal much smaller than human eye
Become.
Claims (2)
1. the projection helmet objective designing method with eyes retina ideal image as target, it is characterised in that: helmet wearer
Optics of the eye system is placed in projection helmet object lens exit pupil position, i.e. opthalmic optics's system first, namely at anterior surface of cornea
In helmet object lens exit pupil position.
2. the projection helmet objective designing method with eyes retina ideal image as target as claimed in claim 1, its feature
It is: projection helmet object lens are made up of 7 lens, and the curvature of 7 lens front-backs by composition projection helmet object lens
The partly or entirely parameter such as the distance between radius, lens thickness, lens is set to variable, to obtain on helmet wearer retina
Being optimization aim to ideal image, the external information image aberration obtained the most on the retina is minimum, resolution is optimization to the maximum
Projection helmet object lens are optimized design by target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610805900.2A CN106324833A (en) | 2016-09-07 | 2016-09-07 | Method of designing projection-type helmet objective lens with ideal retina imaging as target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610805900.2A CN106324833A (en) | 2016-09-07 | 2016-09-07 | Method of designing projection-type helmet objective lens with ideal retina imaging as target |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106324833A true CN106324833A (en) | 2017-01-11 |
Family
ID=57786372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610805900.2A Pending CN106324833A (en) | 2016-09-07 | 2016-09-07 | Method of designing projection-type helmet objective lens with ideal retina imaging as target |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106324833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115336967A (en) * | 2022-09-19 | 2022-11-15 | 南开大学 | Method for obtaining retinal morphology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957502A (en) * | 2010-08-31 | 2011-01-26 | 吉林大学 | Design method of individualized cornea contact lens |
| CN101972135A (en) * | 2010-11-02 | 2011-02-16 | 吉林大学 | Detection method of individual lenticular surface shape data |
| CN102096194A (en) * | 2010-12-24 | 2011-06-15 | 北京理工大学 | Optical transmission projection type three-dimensional helmet display |
| CN103767673A (en) * | 2012-10-18 | 2014-05-07 | 佳能株式会社 | Ophthalmologic apparatus |
| CN104257346A (en) * | 2014-10-21 | 2015-01-07 | 吉林大学 | Visual-sign-free eye wavefront aberration detector |
| CN106646884A (en) * | 2016-12-30 | 2017-05-10 | 苏州苏大维格光电科技股份有限公司 | Projection objective and three-dimensional display device |
-
2016
- 2016-09-07 CN CN201610805900.2A patent/CN106324833A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957502A (en) * | 2010-08-31 | 2011-01-26 | 吉林大学 | Design method of individualized cornea contact lens |
| CN101972135A (en) * | 2010-11-02 | 2011-02-16 | 吉林大学 | Detection method of individual lenticular surface shape data |
| CN102096194A (en) * | 2010-12-24 | 2011-06-15 | 北京理工大学 | Optical transmission projection type three-dimensional helmet display |
| CN103767673A (en) * | 2012-10-18 | 2014-05-07 | 佳能株式会社 | Ophthalmologic apparatus |
| CN104257346A (en) * | 2014-10-21 | 2015-01-07 | 吉林大学 | Visual-sign-free eye wavefront aberration detector |
| CN106646884A (en) * | 2016-12-30 | 2017-05-10 | 苏州苏大维格光电科技股份有限公司 | Projection objective and three-dimensional display device |
Non-Patent Citations (2)
| Title |
|---|
| 《光学学报》 * |
| 《光学精密工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115336967A (en) * | 2022-09-19 | 2022-11-15 | 南开大学 | Method for obtaining retinal morphology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016086742A1 (en) | Microlens array based near-eye display (ned) | |
| CN103995355B (en) | The optical system of a kind of adjustable diopter for Helmet Mounted Display | |
| KR101860688B1 (en) | Chromatic aberration-free wide-angle lens for headgear,and headgear | |
| CN107209381A (en) | Hybrid lens system for head-mountable display | |
| US10268041B2 (en) | Wearable display for stereoscopic viewing | |
| US11675197B1 (en) | System and method for automatic vision correction in near-to-eye displays | |
| KR101632156B1 (en) | Calibration lens can be seen ultra short distance | |
| WO2020079906A1 (en) | Head-mounted display and method for designing wide-focus lens used in same | |
| WO2009067198A1 (en) | Optical system providing optical magnification | |
| TWI690733B (en) | Head-mounted display | |
| CN104345454A (en) | Head-mounted vision auxiliary system and imaging method thereof | |
| CN104142575A (en) | Airborne goggle type head mounted display optical system | |
| JP5607473B2 (en) | Diopter correction device | |
| WO2020008804A1 (en) | Stereoscopic glasses, method for designing spectacle lens used in same, and method for observing stereoscopic image | |
| CN110187506A (en) | Optical presentation system and augmented reality equipment | |
| JP2015219489A (en) | Display device | |
| Rogers et al. | Biocular display optics | |
| KR101651995B1 (en) | Glasses-free 3d display | |
| CN106324833A (en) | Method of designing projection-type helmet objective lens with ideal retina imaging as target | |
| CN218917840U (en) | Defocused display glasses | |
| JPH02168225A (en) | Spectacles for preventing fatigue for | |
| CN107102440A (en) | Wear-type/safety cover type locker/hand-held display methods and display device | |
| KR101490778B1 (en) | Calibration lens can be seen ultra short distance and device thereof | |
| CN108634924B (en) | Optometry and simulation method based on VR technology | |
| CN220603779U (en) | VR lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170111 |
|
| WD01 | Invention patent application deemed withdrawn after publication |