CN105652445A - Ultra-high-definition internal focusing virtual reality optical system - Google Patents
Ultra-high-definition internal focusing virtual reality optical system Download PDFInfo
- Publication number
- CN105652445A CN105652445A CN201610121165.3A CN201610121165A CN105652445A CN 105652445 A CN105652445 A CN 105652445A CN 201610121165 A CN201610121165 A CN 201610121165A CN 105652445 A CN105652445 A CN 105652445A
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- Prior art keywords
- lens
- optical system
- virtual reality
- ultra high
- aspheric surface
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Classifications
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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
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
Abstract
The invention discloses an ultra-high-definition internal focusing virtual reality optical system. The system comprises an aperture (100), and a first lens (1), a second lens (2), a third lens (3), a fourth lens (4) and a display screen (200) are sequentially arranged behind the aperture (100); the first lens (1) adopts a bi-convex aspherical lens, the second lens (2) adopts a crescent-shaped aspherical lens, the third lens (3) adopts a bi-convex aspherical lens, and the fourth lens (4) adopts a crescent-shaped aspherical lens; the first lens (1) and the second lens (2) are bound together through optical glue to form a glued lens set (300), and the glued surface bends towards the aperture (100). The ultra-high-definition internal focusing virtual reality optical system is simple in structure, high in definition, large in view field angle and wide in application range.
Description
[technical field]
The present invention relates to a kind of optical system, more specifically a kind of ultra high-definition, interior focusing virtual reality optical system.
[background technology]
Current virtual reality (VirtualReality) is the development rising stage, and the principle of VR glasses (virtual reality glasses) is similar to magnifier, it is simply that picture is amplified, this picture being exaggerated of human eye perception. Current main product is single piece type, it is possible to achieve 3D effect, but definition is poor, and during viewing 3D image, spinning sensation is stronger. The parameter being confined to optimize is very few, the image quality of eyeglass is difficult to improve, such as this kind of aberration of dispersion distortion, and single eyeglass almost cannot eliminate, for this, the scheme of lens set is the development trend of eyeglass in the following VR helmet (eyeglass is contained on the helmet becomes VR glasses).
Therefore, the present invention is based on above deficiency and produces.
[summary of the invention]
The present invention seeks to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, definition is high, and field of view angle is big, ultra high-definition applied widely, interior focusing virtual reality optical system.
The present invention is achieved by the following technical solutions:
A kind of ultra high-definition, interior focusing virtual reality optical system, it is characterized in that: include diaphragm 100, the first lens 1 it are sequentially provided with backward from described diaphragm 100, second lens 2, 3rd lens 3, 4th lens 4 and display screen 200, the first described lens 1 are lenticular non-spherical lens, the second described lens 2 are falcate non-spherical lens, the 3rd described lens 3 are lenticular non-spherical lens, the 4th described lens 4 are falcate non-spherical lens, and the first described lens 1 and the second lens 2 optical glue are adhesively-bonded together to form balsaming lens group 300, and cemented surface bends towards diaphragm 100.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterized in that: the focal power of the first described lens 1 is for just, the focal power of the second described lens 2 is negative, and the focal power of the 3rd described lens 3 is just, the focal power of the 4th described lens 4 is negative.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: the focal power of described balsaming lens group 300 is just, and maintains static relative to display screen 200;Three described lens 3 are positive light coke and the energy lens that display screen 200 is movable relatively; The 4th described lens 4 are negative power and relative to the fixed lens of display screen 6.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: from diaphragm 100 to display screen 200 direction, first of the first described lens 1 is hyperbola aspheric surface, second for parabola aspheric surface; First of the second described lens 2 be parabola aspheric surface, second be oval aspheric surface; First of the 3rd described lens 3 is hyperbola aspheric surface, second for hyperbola aspheric surface; First of the 4th described lens 4 be parabola aspheric surface, second be oval aspheric surface.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: the second described lens 2 and the 4th lens 4 are towards diaphragm 100 curving.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: the object distance of described optical system is-125mm��-4000mm.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: the diaphragm 100 of described optical system and the distance of the first lens 1 are fixed value 14mm.
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: first described lens the 1, second lens the 2, the 3rd lens 3 and the 4th lens 4 are plastic aspheric lens
Ultra high-definition as above, interior focusing virtual reality optical system, it is characterised in that: first described lens the 1, second lens the 2, the 3rd lens 3 and the aspherical surface shape of the 4th lens 4 meet below equation: In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate, and its unit is identical with length of lens unit, and k is circular cone whose conic coefficient; When k-factor is less than-1, the face sigmoid curves of lens is hyperbola, and when k-factor is equal to-1, the face sigmoid curves of lens is parabola; When k-factor is between-1 to 0, the face sigmoid curves of lens is oval, and when k-factor is equal to 0, the face sigmoid curves of lens is circular, and when k-factor is more than 0, the face sigmoid curves of lens is oblate; ��1To ��8Represent the coefficient corresponding to each radial coordinate respectively.
Compared with prior art, the present invention has the following advantages:
1, the angle of visual field of the present invention is very big, and the angle of visual field can reach 120 ��, and 3D effect becomes apparent from, and has perfect impression on the spot in person during viewing image.
2, the definition of the present invention is very high, and picture is uniform, and no matter how glasses rotate, and can both see whole picture clearly.
3, the present invention is applicable to total experience person, it is possible to regulating diopter, any user, such as through regulating diopter, sees picture.
4, the present invention distorts only small, and one piece construction common on the market is in order to pursue the big angle of visual field, and distortion is all very big, has obvious picture to deform, does not substantially deform in the whole picture of the present invention.
5, the eyeglass of the present invention all adopts glass lens, and system is very light, and has higher permeability.
6, the present invention can reasonably distribute amplification, distorts only small, and after image planes are amplified, sense of reality is guaranteed, and more meets the requirement of virtual reality.
[accompanying drawing explanation]
Fig. 1 is optical system diagram of the present invention.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the invention will be further described:
A kind of ultra high-definition, interior focusing virtual reality optical system, including diaphragm 100, the first lens 1 it are sequentially provided with backward from described diaphragm 100, second lens 2, 3rd lens 3, 4th lens 4 and display screen 200, the first described lens 1 are lenticular non-spherical lens, the second described lens 2 are falcate non-spherical lens, the 3rd described lens 3 are lenticular non-spherical lens, the 4th described lens 4 are falcate non-spherical lens, and the first described lens 1 and the second lens 2 optical glue are adhesively-bonded together to form balsaming lens group 300, and cemented surface bends towards diaphragm 100.
Diaphragm 100 is arranged at the first 14mm position, lens 1 front, the pupil size of its simulation human eye, the light that display screen 200 sends enters human eye after the 4th lens the 4, the 3rd lens the 3, second lens the 2, first lens 1 and diaphragm 100, and time actually used, light is reverse propagation. Diaphragm 100 is arranged on while the first lens 1 front 14mm is in the whole optical system high-quality imaging of guarantee and ensure that optical system structure is compact.
First lens 1 and the second lens 2 formation balsaming lens group 300 glued together, it is possible to well correct various aberrations on axle. Additionally, from diaphragm 100 toward display screen 200 direction, first of first lens 1 adopts hyperbola aspheric surface, light has obvious turnover at this aspheric surface place, make can enter optical system smoothly by all light of the aperture of the diaphragm, also effectively reduce the size of eyeglass behind, reduce optical system volume.
First lens 1 and the second lens 2 formation balsaming lens group 300 glued together, and cemented surface bends towards diaphragm 100, not only make the first auxiliary light have a good trend, but also spherical aberration can be corrected and sine is poor, utilize the characteristic of balsaming lens, well correct the aberration of optical system. Meanwhile, in optical system, the 3rd lens 3 and the 4th lens 4 are used separately, it is possible to well correct the curvature of field and the distortion of optical system, it is achieved high-resolution.
Whole optical system adopt simple lens and balsaming lens group with the use of, not only eliminate the aberration of whole optical system, also well balance the aberration of whole optical system so that there is at a relatively high resolution at the image plane center of optical system and edge.
First described lens the 1, second lens the 2, the 3rd lens 3 and the 4th lens 4 are plastic aspheric lens. All adopting glass lens, system is very light, and has higher permeability. Effectively control cost, reduce optical system volume, alleviate the weight of optical system.
The focal power of the first described lens 1 is just, the focal power of the second described lens 2 is negative, and the focal power of the 3rd described lens 3 is just, the focal power of the 4th described lens 4 is negative. The first described lens 1 are plastic aspherical element plus lens, make all light by diaphragm 100 aperture can enter whole optical system smoothly, achieve the big angle of visual field, the angle of visual field can reach 120 ��, realizing obvious 3D effect, the first lens 1 mainly assume responsibility for the effect that image amplifies and image throwing is remote. The first described lens 1 and the 3rd lens 3 can adopt low-refraction optical plastic. Second lens 2 and the 4th lens 4 adopt the optical plastic of high index of refraction.
The focal power of described balsaming lens group 300 is just, and maintains static relative to display screen 200; Three described lens 3 are positive light coke and the energy lens that display screen 200 is movable relatively; The 4th described lens 4 are negative power and relative to the fixed lens of display screen 6. The relative display screen 200 of balsaming lens group 300 maintains static, and the 3rd lens 3 can move forward and backward by display screen 200 relatively, and the 4th relative display screen 200 of lens 3 maintains static. Therefore, utilizing human eye image-forming principle, when myopia user uses, picture need to move to eyes direction, regulates the position of the 3rd lens 3, compensates the picture moving amount caused by myopia so that system can focus on display screen 200 all the time. Utilize light path principle of reversibility, the light that display screen 200 sends also is able to enter human eye, focus on the retina, the people of different diopters, as long as the 3rd lens 3 being adjusted suitable position, it becomes possible to see picture, it is achieved the internal focusing of optical system, diopter adjustment, suitable in total experience person, improve product on the market and be only used for the limitation of twenty-twenty vision user.
From diaphragm 100 to display screen 200 direction, first of the first described lens 1 is hyperbola aspheric surface, second for parabola aspheric surface; First of the second described lens 2 be parabola aspheric surface, second be oval aspheric surface; First of the 3rd described lens 3 is hyperbola aspheric surface, second for hyperbola aspheric surface; First of the 4th described lens 4 be parabola aspheric surface, second be oval aspheric surface. Such structural design definition is very high, and picture is uniform, distorts only small, and image quality is high.
The second described lens 2 and the 4th lens 4, towards diaphragm 100 curving, distort only small, and after image planes are amplified, sense of reality is guaranteed, and more meets the requirement of virtual reality.
The object distance of described optical system is-125mm��-4000mm.
First described lens the 1, second lens the 2, the 3rd lens 3 and the aspherical surface shape of the 4th lens 4 meet below equation: In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate, and its unit is identical with length of lens unit, and k is circular cone whose conic coefficient; When k-factor is less than-1, the face sigmoid curves of lens is hyperbola, and when k-factor is equal to-1, the face sigmoid curves of lens is parabola; When k-factor is between-1 to 0, the face sigmoid curves of lens is oval, and when k-factor is equal to 0, the face sigmoid curves of lens is circular, and when k-factor is more than 0, the face sigmoid curves of lens is oblate; ��1To ��8Represent the coefficient corresponding to each radial coordinate respectively.
Claims (9)
1. a ultra high-definition, interior focusing virtual reality optical system, it is characterized in that: include diaphragm (100), the first lens (1) it are sequentially provided with backward from described diaphragm (100), second lens (2), 3rd lens (3), 4th lens (4) and display screen (200), described the first lens (1) are lenticular non-spherical lens, described the second lens (2) are falcate non-spherical lens, the 3rd described lens (3) are lenticular non-spherical lens, the 4th described lens (4) are falcate non-spherical lens, and described the first lens (1) are adhesively-bonded together to form balsaming lens group (300) with the second lens (2) optical glue, and cemented surface bends towards diaphragm (100).
2. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterized in that: the focal power of described the first lens (1) is for just, the focal power of described the second lens (2) is negative, the focal power of the 3rd described lens (3) is just, the focal power of the 4th described lens (4) is negative.
3. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterised in that: the focal power of described balsaming lens group (300) is just, and maintains static relative to display screen (200); Described three lens (3) are positive light coke and the energy lens that display screen (200) is movable relatively; The 4th described lens (4) are for negative power and relative to display screen (6) fixed lens.
4. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterized in that: from diaphragm (100) to display screen (200) direction, first of described the first lens (1) is hyperbola aspheric surface, second for parabola aspheric surface; First of described the second lens (2) be parabola aspheric surface, second be oval aspheric surface; First of the 3rd described lens (3) is hyperbola aspheric surface, second for hyperbola aspheric surface;First of the 4th described lens (4) be parabola aspheric surface, second be oval aspheric surface.
5. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterised in that: described the second lens (2) and the 4th lens (4) are towards diaphragm (100) curving.
6. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterised in that: the object distance of described optical system is-125mm��-4000mm.
7. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterised in that: the diaphragm (100) of described optical system and the distance of the first lens (1) are fixed value 14mm.
8. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterised in that: described the first lens (1), the second lens (2), the 3rd lens (3) and the 4th lens (4) are plastic aspheric lens.
9. ultra high-definition according to claim 1, interior focusing virtual reality optical system, it is characterised in that: the aspherical surface shape of described the first lens (1), the second lens (2), the 3rd lens (3) and the 4th lens (4) meets below equation: In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate, and its unit is identical with length of lens unit, and k is circular cone whose conic coefficient; When k-factor is less than-1, the face sigmoid curves of lens is hyperbola, and when k-factor is equal to-1, the face sigmoid curves of lens is parabola; When k-factor is between-1 to 0, the face sigmoid curves of lens is oval, and when k-factor is equal to 0, the face sigmoid curves of lens is circular, and when k-factor is more than 0, the face sigmoid curves of lens is oblate; ��1To ��8Represent the coefficient corresponding to each radial coordinate respectively.
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| CN201610121165.3A CN105652445B (en) | 2016-03-03 | 2016-03-03 | A kind of ultra high-definition, interior focusing virtual reality optical system |
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| CN201610121165.3A CN105652445B (en) | 2016-03-03 | 2016-03-03 | A kind of ultra high-definition, interior focusing virtual reality optical system |
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| CN105652445B CN105652445B (en) | 2018-06-01 |
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| CN108319015A (en) * | 2017-04-21 | 2018-07-24 | 北京耐德佳显示技术有限公司 | The nearly eye display device of retinal projection's formula |
| WO2019033284A1 (en) * | 2017-08-15 | 2019-02-21 | 深圳市柔宇科技有限公司 | Head-mounted display device |
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| CN105652445B (en) | 2018-06-01 |
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