CN105629479A - Catadioptric head-wearing display optical system for displaying three-dimensional scene - Google Patents
Catadioptric head-wearing display optical system for displaying three-dimensional scene Download PDFInfo
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- CN105629479A CN105629479A CN201610208002.9A CN201610208002A CN105629479A CN 105629479 A CN105629479 A CN 105629479A CN 201610208002 A CN201610208002 A CN 201610208002A CN 105629479 A CN105629479 A CN 105629479A
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- 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
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0804—Catadioptric systems using two curved mirrors
- G02B17/0812—Catadioptric systems using two curved mirrors off-axis or unobscured systems in which all of the mirrors share a common axis of rotational symmetry
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- 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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0116—Head-up displays characterised by optical features comprising device for genereting colour display comprising devices for correcting chromatic aberration
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- 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
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
- G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
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Abstract
The present invention discloses a catadioptric head-wearing display optical system for displaying a three-dimensional scene. The system comprises left and right sets of optical systems with same structures, wherein the optical systems are symmetrically arranged; each optical system includes one display screen, one free-form surface reflector and an optics lens; the free-form surface reflector is disposed at front of the optics lens, and the display screen is disposed at the front side of the optical lens; the normal direction of the display screen is perpendicular to the normal direction of the optical lens, and angles of inclination are formed between the normal direction of the free-form surface reflector and the display screen and between the normal direction of the free-form surface reflector and the optics lens; and the light ray emitted by the display screen is reflected by the free-form surface reflector to generate turning, and enters human's eyes after being reflected by the optics lens. The catadioptric head-wearing display optical system for displaying a three-dimensional scene is able to reduce the size and the weight of a virtual reality helmet, is simple in structure, light in design and low in cost, and is applicable to industrialization production.
Description
Technical field
The present invention relates to the optics structure in a kind of virtual implementing helmet, particularly related to a kind of refraction-reflection for presenting three-dimensional scenic and worn display optical system.
Background technology
Virtual reality technology (VirtualReality, VR) technology be propose the eighties in 20th century a kind of utilize Practical computer teaching, can the virtual environment of vision mutual, that there is feeling of immersion, multiple virtual environment can be generated as required, it is widely used in city planning, driving training, the fields such as indoor design. In recent years along with the development of computer computation ability and each type sensor, the virtual implementing helmet of each type has occurred on market, eyepiece is made up of by substantially display screen or mobile phone and, people's eye can see the image amplified on screen by eyepiece, image in the change adjustment left and right screen of sensor sensing head part, people's eye can be seen three-dimensional, there is the visual pattern of interactivity.
In existing market, the optics structure of virtual implementing helmet is substantially all people's eye, eyeglass and screen three's normal conllinear, eyeglass is all generally single eyeglass formula, therefore image border is often clear not, and the increase along with visual angle, the dispersion at edge also can be increasing, greatly limit the visual experience of user, in order to strengthen feeling of immersion, and the volume of reduction equipment, it is necessary to adopt more complicated optics structure.
Summary of the invention
In order to solve Problems existing in background technology, it is an object of the invention to provide a kind of refraction-reflection for presenting three-dimensional scenic and worn display optical system, presenting for virtual reality scenario.
The technical solution used in the present invention is as follows:
The described helmet comprises the two groups of identical optical systems being arranged symmetrically with of structure in left and right, often organizes optical system and comprises display screen, free-form surface mirror and optical lens; Free-form surface mirror is placed in the right on of optical lens, and display screen is placed in the front side of optical lens, and the normal direction of display screen is vertical with the normal direction of optical lens, and the normal direction of free-form surface mirror is pitch angle with display screen, optical lens respectively. The light that display screen sends turns to after being reflected by free-form surface mirror, people's eye is entered again after optical lens reflects, the light that display screen sends can be received by eyes through optical lens transmission after speculum reflects again, it may also be useful to person can see the image on the display screen that optical system is amplified.
Two optical lenses of two groups of described optical systems are arranged in parallel along people's eye direction, often organize in optical system, interpupillary distance regulates back-end support to be arranged in free-form surface mirror housing, optical lens is arranged on dioptry and regulates in slide block, dioptry regulates the outside portion of slide block to be connected on the guide rail of free-form surface mirror housing inwall, dioptry regulates the interior sidepiece of slide block to be connected on the guide rail of interpupillary distance adjustment back-end support sidewall so that dioptry regulates slide block to move along the cutter rail in human eye sight direction; Interpupillary distance regulates support front end to be provided with flanged structure, free-form surface mirror housing front end is provided with flanged structure, the two ends of free-form surface mirror are connected together respectively and regulate in interpupillary distance between support front end boss and free-form surface mirror housing front end boss, and the plane of reflection of free-form surface mirror is positioned at side; Display screen is fixedly mounted on interpupillary distance and regulates the sidewall of support and its display projecting direction to be perpendicular to people's eye direction, the interpupillary distance of two groups of optical systems regulates support front end boss end face to be all connected to left and right screen connection guide rail and moves horizontally along guide rail, and left and right screen connection guide rail is along being perpendicular to human eye sight direction.
The opposing placement of display screen in described two groups of optical systems and centre normal conllinear, and vertical with people's eye normal.
The described free-form surface mirror often organized in optical system is tiltedly put between screen and optical mirror slip, the normal of free-form surface mirror is 30 �㡫60 �� angles respectively with the normal of display screen and optical lens, the light sent from display screen is turned back after free-form surface mirror reflects closely be perpendicular to optical lens after about 90 �� and enter people's eye, and the normal of the normal of the point of intersection of this light and free-form surface mirror and optical lens is the angle of 30 �㡫60 ��.
Described free-form surface mirror has positive focal power, and focal length is 50mm��100mm, and bore is 50mm��70mm, and thickness is 1mm��2mm.
Described optical lens surface adopts the face type with positive light coke, and optical lens specifically adopts sphere, aspheric surface or Fei Nieer face type or other face types with positive light coke.
The exterior contour of described free-form surface mirror is circular, rectangle or irregular shape.
The specular material of described free-form surface mirror is the aluminum or aluminum alloy through polishing, surface be coated with reflectivity higher than 95% highly reflecting films.
Described optical lens material adopts plastics or glass, and it is single lens, set of lenses or gummed lens that the structure of optical lens adopts.
Two optical lenses in described two groups of optical systems are movable along people's eye direction at the same time or separately, and mobile scope is 0��10mm.
Described two groups of optical systems near or away from regulation range be 0��15mm.
Described display screen is two pieces of complete identical LCD or OLED display screen, and described optical lens is two to the transmission optical component of identical rotational symmetry, it is possible to be simple lens, it is also possible to be many lens combinations, or gummed lens.
The invention has the beneficial effects as follows:
1. the focal power of originally single eyeglass is distributed on two optical elements by optical system of the present invention, under the prerequisite keeping original feeling of immersion, avoid and center edge thickness that manufacture difficulty is big especially occur than very big eyeglass, it is to increase the good article rate of eyeglass.
2. the free-form surface mirror in optical system light path of the present invention can not produce aberration, reduces system total dispersion, and has also shared a part of focal power. It is very thin that speculum can design, and reduces the total mass of system, and the mode adopting pressing mold is produced quicker than the production of optical mirror slip.
3. optical system of the present invention has more optimization variable, can obtain better picture quality, it may also be useful to the image that family is seen is more clear, it is to increase feeling of immersion.
Accompanying drawing explanation
Fig. 1 is the schematic appearance of the helmet of the present invention.
Fig. 2 overlooks section optical structure chart in the embodiment of the present invention.
Fig. 3 is any side of the present invention index path.
Fig. 4 is the minute surface graphic representation of embodiment of the present invention free-form surface mirror.
In figure: display screen 1, free-form surface mirror 2, optical lens 3, people's eye 4, left and right screen connection guide rail 5, free-form surface mirror housing 6, dioptry regulate slide block 7, interpupillary distance to regulate support 8.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As depicted in figs. 1 and 2, the helmet of the present invention comprises the two groups of identical optical systems being arranged symmetrically with of structure in left and right, often organizes optical system and comprises display screen 1, free-form surface mirror 2 and optical lens 3; Free-form surface mirror 2 is placed in the right on of optical lens 3, display screen 1 is placed in the front side of optical lens 3, the normal direction of display screen 1 is vertical with the normal direction of optical lens 3, the normal direction of free-form surface mirror 2 respectively with display screen 1, optical lens 3 in pitch angle.
As shown in Figure 2, two optical lenses 3 of two groups of optical systems are arranged in parallel along people's eye direction, often organize in optical system, interpupillary distance regulates support 8 rear end to be arranged in free-form surface mirror housing 6, optical lens 3 is arranged on dioptry and regulates in slide block 7, dioptry regulates the outside portion of slide block 7 to be connected on the guide rail of free-form surface mirror housing 6 inwall, dioptry regulates the interior sidepiece of slide block 7 to be connected on the guide rail of interpupillary distance adjustment support 8 rear end sidewall so that dioptry regulates slide block 7 to move along the cutter rail of people's eye 4 line-of-sight direction; Interpupillary distance regulates support 8 front end to be provided with flanged structure, free-form surface mirror housing 6 front end is provided with flanged structure, the two ends of free-form surface mirror 2 are connected together respectively and regulate in interpupillary distance between support 8 front end boss and free-form surface mirror housing 6 front end boss, and the plane of reflection of free-form surface mirror 2 is positioned at side; Display screen 1 is fixedly mounted on interpupillary distance and regulates the sidewall of support 8 and its display projecting direction to be perpendicular to people's eye direction, the interpupillary distance of two groups of optical systems regulates support 8 front end boss end face to be all connected to left and right screen connection guide rail 5 and moves horizontally along guide rail, and left and right screen connection guide rail 5 is along being perpendicular to people's eye 4 line-of-sight direction.
The flange of free-form surface mirror 2 front end extension, as shirt rim, regulates support 8 and free-form surface mirror housing 6 in order to connect interpupillary distance.
The opposing placement of display screen 1 in two groups of optical systems and centre normal conllinear, and vertical with people's eye normal.
The free-form surface mirror 2 often organized in optical system is tiltedly put between screen and optical mirror slip, and the normal of free-form surface mirror 2 is 30 �㡫60 �� angles respectively with the normal of display screen 1 and optical lens 3.
As shown in Figure 3, it is the light channel structure of side of the present invention, after light sends from display screen 1, after free-form surface mirror 2 reflects and converges, enter optical lens 3 and reflect, finally enter pupil from position of human eye 4, it may also be useful to person can see the image amplified on display screen 1.
Free-form surface mirror 2 surface adopts the face type with positive light coke, and focal length is 50mm��100mm, and bore is 50mm��70mm, and thickness is 1mm��2mm. The exterior contour of free-form surface mirror 2 is circular, rectangle or irregular shape. The specular material of free-form surface mirror 2 is the aluminum or aluminum alloy through polishing, surface be coated with reflectivity higher than 95% highly reflecting films.
Optical lens 3 for focal power be positive rotational symmetry optical element, material can adopt opticglass can also be optical plastics, surface can be coated with anti-reflection film, cured film, the functional rete such as waterproof membrane, its structure can be single eyeglass or gummed lens, it is also possible to is many lens set, face, surface type can be sphere, aspheric surface or Fei Nier combination, it is also possible to is the combination of several types.
Two groups of optical systems near or away from regulation range be 0��15mm. Two groups of optical systems of the left and right sides can be separated from each other or close, in order to adjust interpupillary distance, makes this virtual implementing helmet of use that the people of different interpupillary distances can be comfortable.
Two optical lenses 3 in two groups of optical systems are movable along people's eye direction at the same time or separately, and mobile scope is 0��10mm. Optical lens can move forward and backward along optical axis, in order to adjust the dioptry of optical system, makes the user of myopia or long sight also can see on display screen image clearly.
Display screen 1 adopts high-resolution LCD or OLED flat-faced screen, it is preferable that employing resolving power higher than the low-response time OLED flat-faced screen of 1k.
Specific embodiment of the invention working process is as follows:
Free-form surface mirror adopts the method for pressing mold to produce, and can reduce production cost, it is to increase production rate. Its internal surface face type has multiple description method, it is preferable that, the concrete aspheric surface implementing to adopt rotational symmetry, calculation formula is as follows:
Wherein, z is rise (i.e. ordinate zou in Fig. 4), and r is the distance (i.e. X-coordinate in Fig. 4) of any point on aspheric surface summit to aspheric surface, and c is curvature, and k is conical surface coefficient, A1��A5��ANBe respectively first, second, third, fourth, the 5th ..., N asphericity coefficient, N is positive integer, A1To ANItem number is any, and value is any. Fig. 4 is taking the aspheric surface centre normal of rotational symmetry as z-axis, and being perpendicular to z-axis direction is the system of coordinates that r axle is set up, and O point is the summit of aspheric surface. Curve represents the section profile line of aspheric surface. and owing to aspheric surface is rotational symmetry, therefore this curve can represent non-spherical surface face type. P is any point on curve, and its coordinate is P (r, z).
Free-form surface mirror 2 adopts the outer convex continuous curve surface with positive light coke of indent, material is the aluminium through polishing, and surface is coated with reflectivity higher than the highly reflecting films of 99%, can be bent by light to optical lens 3 downwards, the thickness of free-form surface mirror 2 is about 1.5mm, and profile is circular.
The catadioptric optical system that free-form surface mirror 2 and optical lens 3 combine has positive focal power, focal length is 25mm��80mm, relative aperture and aperture are f/2��f/5.6, and simple eye diagonal lines field angle is 80 �㡫120 ��, can cover the display screen 3 of 3 cun��4 cun.
Concrete implementing, free-form surface mirror 2 adopts thickness to be the rectangular reflection face of polishing inside the aluminium system of 1mm, plating highly reflecting films, and thickness is even, is of a size of 50mm*50mm, and its centre normal and optical mirror slip normal or display screen 1 normal angle are 45 ��. The light that screen center sends can be turned back after 90 ��, enters optical lens 3. The face type coefficient of free-form surface mirror 2 is respectively: c=0.0004, k=2647.1, A4=
2.311963E-008,A6=-1.650046E-011, A8=-4.277380E-014, all the other coefficients are 0; The face type coefficient of close people's eye of optical lens 3 is respectively c=-0.0104, k=-0.058268, A4=-1.104867E-007, A6=-3.971011E-010, A8=2.704699E-012, away from people's eye be face type coefficient is c=-0.003, k=1.288586E-003, A4=2.308404E-007, A6=8.429640E-010, A8=-1.112705E-012, lens materials is E48R, and center thickness is 5.53mm, and bore is 30mm. The width between centers of center of lens distance position of human eye 4 is 15mm, the width between centers of free-form surface mirror 2 is 20mm, the distance at the width between centers display screen center of free-form surface mirror 2 is 40mm, and the size size of display screen 1 is the 1080pOLED display screen of the 3:2 of 2.9 inches. The focal length of whole optical system is about 60mm, and relative aperture is f/5.6.
Optical lens 3 in concrete enforcement adopts single lens structure, and two surfaces all adopt axisymmetric aspheric surface, calculation formula is identical with upper formula, material adopts low dispersion optical plastics, abbe number is 45��65, and specific refractory power is 1.48��1.55, front and rear surfaces plating anti-reflection film, eyeglass bore is 30mm��50mm, and lens thickness is 2mm��15mm.
The width between centers screen 15mm��55mm of free-form surface mirror 2, optical lens 3 is apart from free-form surface mirror center 10mm��20mm, the closest range of position of human eye 4 apart from the surperficial center of optical lens 3 is 6mm��25mm, left and right two cover optical system can move left and right distance for 5mm��25mm, the distance that optical lens 3 can move forward and backward is 5mm��25mm, at the moment focal length is the longest away from people for optical lens 3, the people being applicable to myopia uses, along with it is near people's eye, focal length shortens, and the people being applicable to long sight uses.
Thus, present invention, avoiding and the big especially center edge thickness of manufacture difficulty occurs than very big eyeglass, it is to increase the good article rate of eyeglass, and maintain original feeling of immersion, reduce system total dispersion, shared focal power, be easier to produce.
Claims (10)
1. wear display optical system for presenting the refraction-reflection of three-dimensional scenic for one kind, it is characterized in that: the described helmet comprises the two groups of identical optical systems being arranged symmetrically with of structure in left and right, often organize optical system and comprise display screen (1), free-form surface mirror (2) and optical lens (3); Free-form surface mirror (2) is placed in the right on of optical lens (3), display screen (1) is placed in the front side of optical lens (3), the normal direction of display screen (1) is vertical with the normal direction of optical lens (3), the normal direction of free-form surface mirror (2) respectively with display screen (1), optical lens (3) in pitch angle; The light that display screen (1) sends turns to after being reflected by free-form surface mirror (2), then enters people's eye (4) after optical lens (3) reflects.
2. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterized in that: two optical lenses (3) of two groups of described optical systems are arranged in parallel along people's eye direction, often organize in optical system, interpupillary distance regulates support (8) rear end to be arranged in free-form surface mirror housing (6), optical lens (3) is arranged on dioptry and regulates in slide block (7), dioptry regulates the outside portion of slide block (7) to be connected on the guide rail of free-form surface mirror housing (6) inwall, dioptry regulates the interior sidepiece of slide block (7) to be connected on the guide rail of interpupillary distance adjustment support (8) rear end sidewall, dioptry is made to regulate slide block (7) to move along the cutter rail of people's eye (4) line-of-sight direction, interpupillary distance regulates support (8) front end to be provided with flanged structure, free-form surface mirror housing (6) front end is provided with flanged structure, the two ends of free-form surface mirror (2) are connected together respectively and regulate in interpupillary distance between support (8) front end boss and free-form surface mirror housing (6) front end boss, and the plane of reflection of free-form surface mirror (2) is positioned at side, display screen (1) is fixedly mounted on interpupillary distance and regulates the sidewall of support (8) and its display projecting direction to be perpendicular to people's eye direction, the interpupillary distance of two groups of optical systems regulates support (8) front end boss end face to be all connected to left and right screen connection guide rail (5) and moves horizontally along guide rail, and left and right screen connection guide rail (5) is along being perpendicular to people's eye (4) line-of-sight direction.
3. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterised in that: display screen (1) opposing placement in described two groups of optical systems and centre normal conllinear, and vertical with people's eye normal.
4. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterized in that: the described free-form surface mirror (2) often organized in optical system is tiltedly put between screen and optical lens (3), and the normal of free-form surface mirror (2) is 30 �㡫60 �� of angles respectively with the normal of display screen (1) and optical lens (3).
5. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterized in that: described free-form surface mirror (2) has positive focal power, focal length is 50mm��100mm, and bore is 50mm��70mm, and thickness is 1mm��2mm.
6. a kind of refraction-reflection for presenting three-dimensional scenic wears display optical system according to claim 1 or 5, it is characterised in that: described optical lens (3) surface adopts the face type with positive light coke.
7. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterised in that: the exterior contour of described free-form surface mirror (2) is circular, rectangle or irregular shape.
8. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterized in that: the specular material of described free-form surface mirror (2) is the aluminum or aluminum alloy through polishing, surface be coated with reflectivity higher than 95% highly reflecting films.
9. a kind of refraction-reflection for presenting three-dimensional scenic according to claim 1 wears display optical system, it is characterized in that: described optical lens (3) material adopts plastics or glass, it is single lens, set of lenses or gummed lens that the structure of optical lens (3) adopts.
10. wear display optical system according to a kind of refraction-reflection for presenting three-dimensional scenic shown in claim 1, it is characterized in that: two optical lenses (3) in described two groups of optical systems are movable along people's eye direction at the same time or separately, and mobile scope is 0��10mm.
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| CN106681003A (en) * | 2017-01-20 | 2017-05-17 | 广东烨嘉光电科技股份有限公司 | VR (virtual reality) lens system |
| CN106842573A (en) * | 2017-01-26 | 2017-06-13 | 西安可视可觉网络科技有限公司 | A kind of AR or VR imaging methods and can be used for the glasses of AR or VR |
| CN108445637A (en) * | 2018-05-18 | 2018-08-24 | 嘉兴玄视信息科技有限公司 | A kind of virtual reality visor based on non-paraxial imaging |
| CN109613982A (en) * | 2018-12-13 | 2019-04-12 | 叶成环 | Wear-type AR shows the display exchange method of equipment |
| CN110780433A (en) * | 2019-11-29 | 2020-02-11 | 联想(北京)有限公司 | Off-axis reflective optical system and electronic equipment |
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