CN106154566A - A kind of 3 d light fields display system and display parameters determine method - Google Patents
A kind of 3 d light fields display system and display parameters determine method Download PDFInfo
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- CN106154566A CN106154566A CN201610528509.2A CN201610528509A CN106154566A CN 106154566 A CN106154566 A CN 106154566A CN 201610528509 A CN201610528509 A CN 201610528509A CN 106154566 A CN106154566 A CN 106154566A
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- 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
- G02B30/26—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 of the autostereoscopic type
- G02B30/27—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 of the autostereoscopic type involving lenticular arrays
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Abstract
The invention discloses a kind of 3 d light fields display system and display parameters determine that method, described 3 d light fields display system include: display panels, two dimension convex lens array and hologram functional screen；Described two dimension convex lens array is arranged between described display panels and described hologram functional screen；Described two dimension convex lens array is l with the distance of described display panels, distance between described two dimension convex lens array and described hologram functional screen is L, a diameter of P of each convex lens in described two dimension convex lens array, the focal length of described convex lens is f, and the center distance of adjacent described convex lens is g；Described two dimension convex lens array and distance l of described display panels, distance L between described two dimension convex lens array and described hologram functional screen and the focal distance f of described convex lens meet Gaussian imaging equation；The angle of divergence of described hologram functional screen is α.Dissipating by hologram functional screen, it is possible to correct the distortion of integration imaging three dimensional display content, improves the experience of beholder.
Description
Technical field
The present invention relates to 3 d light fields Display Technique field, particularly to a kind of 3 d light fields display system and display parameters
Determine method.
Background technology
Along with developing rapidly of current science and technology, traditional two dimensional surface Display Technique cannot meet the most far away at present
Industry-by-industry field is for the demand of depth data Yu space multistory sense.Increasing application, such as medical imaging, science
Research, outer space exploration, important teleconference and military affairs etc., it is desirable to be capable of the true reconstruction of three-dimensional scenic, so that
Beholder can capture relevant information more accurately, carries out on-the-spot judgement accurately.Free 3 D display technology can make sight
The person of seeing passes through naked eyes and directly experiences 3D vision, makes 3-D view more life-like display true picture.
Light field shows the one as free 3 D display technology, and its representative is integration imaging three dimensional display, by
IP (integral photography, the integrated photography) technology that Lippmann proposes develops, and this technology can be spectators
The free stereo effect of full parallax is provided.Existing integration imaging dimension display technologies is mainly based upon being integrated into of lens arra
As three dimensional display, light field shows and also includes that light field based on projector array shows.
Owing to there is the aberration problems of image content for perfect lens in real lens, therefore based on lens array
Row integration imaging three dimensional display reproduce light field there is great error, as it is shown in figure 1, Fig. 1 be prior art based on thoroughly
The imaging schematic diagram of the integration imaging three dimensional display of lens array, figure includes two dimension convex lens array 101.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of 3 d light fields display system and display parameters to determine method, to rectify
The aberration problems that positive integration imaging three dimensional display content exists.
For reaching above-mentioned purpose, first aspect, the embodiment of the invention discloses a kind of 3 d light fields display system, including:
Display panels, two dimension convex lens array and hologram functional screen；
Described two dimension convex lens array is arranged between described display panels and described hologram functional screen；
Described two dimension convex lens array is l with the distance of described display panels, described two dimension convex lens array and institute
Stating the distance between hologram functional screen is L, a diameter of P of each convex lens in described two dimension convex lens array, described convex lens
The focal length of mirror is f, and the center distance of adjacent described convex lens is g；
Described two dimension convex lens array and distance l of described display panels, described two dimension convex lens array are with described
Distance L between hologram functional screen and the focal distance f of described convex lens meet Gaussian imaging equation:
The angle of divergence alpha of described hologram functional screen is:
α=arctan (g/L)-arctan (P/L).
It is also preferred that the left the generally circular in shape or regular polygon of described convex lens.
It is also preferred that the left described convex lens is generally circular in shape, described diameter P is the diameter of described convex lens.
It is also preferred that the left described convex lens be shaped as regular polygon, described diameter P is the circumscribed circle diameter of described convex lens.
It is also preferred that the left the square arrangement of convex lens array of described two dimension or cellular arrangement.
Second aspect, the display parameters that the embodiment of the invention also discloses a kind of 3 d light fields display system determine method,
It is applied to the 3 d light fields display system described in first aspect, including:
View angle theta and formula is may be viewed by according to default system
Determine described two dimension convex lens array with in distance l of described display panels and adjacent described convex lens
The first relation between g in the heart；
According to default monocular resolution Rsingle, total resolution R of described display panelstotal, beholder is to described
Distance D of hologram functional screen and formula
Determine distance L between described two dimension convex lens array and described hologram functional screen and described two dimension convex lens battle array
The second relation between row and distance l of described display panels；
Value according to distance L preset between described two dimension convex lens array and described hologram functional screen, described first pass
System and described second relation, calculate adjacent described convex lens center distance g and described two dimension convex lens array with described
The value of distance l of display panels；
Value according to distance L between described two dimension convex lens array and described hologram functional screen, described two dimension convex lens
The value of distance l of array and described display panels and formula
Determine the focal distance f of each convex lens in described two dimension convex lens array and the value of diameter P；
Value according to described diameter P, the value of center distance g of adjacent described convex lens, described two dimension convex lens array with
The value of distance L between described hologram functional screen and formula
α=arctan (g/L)-arctan (P/L),
Determine the angle of divergence alpha of described hologram functional screen.
It is also preferred that the left described default system may be viewed by view angle theta scope it is: 30 degree≤θ≤60 degree.
It is also preferred that the left described first relation is:
Described second relation is:
It is also preferred that the left the square arrangement of convex lens array of described two dimension or cellular arrangement.
As seen from the above technical solutions, the embodiment of the present invention provides 3 d light fields display system and display parameters determine
Method, is diffused imaging, effectively by the angle of divergence alpha of hologram functional screen by 3-D view formed by two dimension convex lens array
Correct the distortion of actual lens image content；The display parameters of the 3 d light fields display system obtained, including: described two dimension is convex
The diameter P of each convex lens in lens arra, center distance g of adjacent described convex lens, described two dimension convex lens array with
Distance L between described hologram functional screen, described two dimension convex lens array and distance l of described display panels and described
The angle of divergence alpha of hologram functional screen, can make beholder watch with different distance from different perspectives；Additionally, from system structure
Can obtain, the 3 d light fields display system that the embodiment of the present invention provides shows compared to light field based on projector array, tool
Have that volume is little, the advantage of easy regulation.Certainly, arbitrary product or the method for implementing the present invention must be not necessarily required to reach above simultaneously
Described all advantages.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the imaging schematic diagram of the integration imaging three dimensional display based on lens arra of prior art；
Fig. 2 is the structural representation of the 3 d light fields display system of the embodiment of the present invention；
Fig. 3 is the 3 d light fields display system imaging effect figure of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the square arrangement of two-dimentional convex lens array of the embodiment of the present invention；
Fig. 5 be the two-dimentional convex lens array of the embodiment of the present invention be the schematic diagram of cellular arrangement；
Fig. 6 is the coding principle schematic diagram of the volumetric pixel Mapping implementation two dimensional image of the embodiment of the present invention；
Fig. 7 is the schematic flow sheet that the display parameters of the 3 d light fields display system of the embodiment of the present invention determine method；
Fig. 8 is the application scenarios schematic diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Fig. 2 is the structural representation of the 3 d light fields display system of the embodiment of the present invention, described 3 d light fields display system
Including: display panels 201, two dimension convex lens array 101 and hologram functional screen 202；
Described two dimension convex lens array 101 be arranged on described display panels 201 and described hologram functional screen 202 it
Between；
Described two dimension convex lens array 101 is l with the distance of described display panels 201, described two dimension convex lens battle array
Distance between row 101 and described hologram functional screen 202 is L, each convex lens straight in described two dimension convex lens array 101
Footpath is P, and the focal length of described convex lens is f, and the center distance of adjacent described convex lens is g；
Described two dimension convex lens array 101 and distance l of described display panels 201, described two dimension convex lens array
Distance L between 101 and described hologram functional screen 202 and the focal distance f of described convex lens meet Gaussian imaging equation:
The angle of divergence alpha of described hologram functional screen is:
α=arctan (g/L)-arctan (P/L).
The application embodiment of the present invention, according to the angle of divergence of hologram functional screen, by graphics formed by two dimension convex lens array
As being diffused imaging, the 3-D view after diffusion can reduce the light that integration imaging three dimensional display based on lens arra reproduces
The error that field exists.
Fig. 3 is the 3 d light fields display system imaging effect figure of the embodiment of the present invention.
3 d light fields display system disclosed in the present embodiment passes through hologram functional screen 202 by two dimension convex lens array 101 institute
The 3-D view become is diffused imaging, and the imaging of two dimension convex lens array 101 has been spread α angle more, effective rectification
The distortion of actual lens image content.
Concrete, the generally circular in shape or regular polygon of the described convex lens of the embodiment of the present invention.The shape of described convex lens
Shape is circular, and described diameter P is the diameter of described convex lens；Described convex lens be shaped as regular polygon, described diameter P is institute
State the circumscribed circle diameter of convex lens.
Fig. 4 is the schematic diagram of the square arrangement of two-dimentional convex lens array of the embodiment of the present invention, and Fig. 5 is that the present invention implements
The two-dimentional convex lens array of example is the schematic diagram of cellular arrangement.During the described square arrangement of two dimension convex lens array, each
Two dimension the size of convex lens, shape and parameter is identical and ranks alignment arrange；Described two dimension convex lens array is honeycomb
Shape arrangement time, each two dimension the size of convex lens, shape and parameter is identical and ranks press hexagon setting.
When two dimension convex lens array difference, the method for pixel coder, concrete institute on display panels 201 will be changed
State pixel coder process on display panels 201, see the volumetric pixel Mapping implementation two dimension that Fig. 6, Fig. 6 are the embodiment of the present invention
The coding principle schematic diagram of image, pixel coder process includes:
Step 1, determines the information of body image vegetarian refreshments in 3 d light fields: the light intensity that at location A, body image vegetarian refreshments sends in directionb
Information can use IABRepresent.
Step 2, utilizes center distance g of adjacent described convex lens, described two dimension convex lens array 101 and described liquid crystal
Show the distance of panel 201 be l, distance between described two dimension convex lens array 101 and described hologram functional screen 202 be L and body
The positional information A of pixel, directional information B determine arrangement information C of pixel on display panels 201.
Step 3, forms the intensity signal I sent in directionb by described location A body image vegetarian refreshmentsABTo described liquid crystal
Show the intensity signal I of arrangement information C of pixel on panel 201CPixel-map relation.
In the embodiment of the present invention, display panels 201 is for loading the coded image of two dimension, and described coded image passes through
The modulating action of lens arra 101 and hologram functional screen 202 can realize the reconstruction of 3 d light fields.Display panels 201
Resolution is the highest, and the information of reconstruction is the most complete, and the degree of accuracy of content is the best.The application embodiment of the present invention, hologram functional screen
Imaging obtains the intensity signal of respective pixel on display panels 201 by mapping relations.
Fig. 7 is the schematic flow sheet that the display parameters of the 3 d light fields display system of the embodiment of the present invention determine method, bag
Include:
Step 701, may be viewed by view angle theta and formula according to default system
Determine described two dimension convex lens array with in distance l of described display panels and adjacent described convex lens
The first relation between g in the heart.
Step 702, according to default monocular resolution Rsingle, total resolution R of described display panelstotal, viewing
Person is to distance D of described hologram functional screen and formula
Determine distance L between described two dimension convex lens array and described hologram functional screen and described two dimension convex lens battle array
The second relation between row and distance l of described display panels.
Step 703, according to the value of distance L preset between described two dimension convex lens array and described hologram functional screen, institute
State the first relation and described second relation, calculate center distance g of adjacent described convex lens and described two dimension convex lens battle array
The value of distance l of row and described display panels.
Step 704, according to described two dimension convex lens array and described hologram functional screen between the value of distance L, described two
The value of distance l of dimension convex lens array and described display panels and formula
Determine the focal distance f of each convex lens in described two dimension convex lens array and the value of diameter P.
Step 705, according to the value of described diameter P, the value of center distance g of adjacent described convex lens, described two dimension convex lens
The value of distance L between lens array and described hologram functional screen and formula
α=arctan (g/L)-arctan (P/L),
Determine the angle of divergence alpha of described hologram functional screen.
Concrete, in the embodiment of the present invention, predetermined system may be viewed by view angle theta scope and is: 30 degree≤θ≤60 degree.
Concrete, in the embodiment of the present invention, described first relation is:
Described second relation is:
The application embodiment of the present invention, according to the systematic parameter of three-dimensional display system, obtains the display ginseng of three-dimensional display system
Number, three-dimensional display system realizes the image flame detection to two dimension convex lens array imaging by angle of divergence alpha, and formed 3-D view is more
Close to real image, reduce error produced by two dimension convex lens array imaging.
Fig. 8 is the application scenarios schematic diagram of the embodiment of the present invention.
The application embodiment of the present invention, the two dimensional image that display panels 201 loads is by two dimension convex lens array
101, carry out three-dimensional imaging, and through the diffusion imaging of hologram functional screen 202, beholder stands in can watch three with bore hole at X point
3-D view formed by dimension display system, due to the diffusion of hologram functional screen, the 3-D view that beholder watches can
Close to real image, there is less image error.
Application the embodiment of the present invention, by default system may be viewed by view angle theta obtained described two dimension convex lens array with
The first relation between distance l and center distance g of described convex lens of described display panels；By default monocular
Resolution Rsingle, total resolution R of described display panelstotal, and beholder to distance D of described hologram functional screen,
Distance L between described two dimension convex lens array and described hologram functional screen and described two dimension convex lens array are arrived with described
The second relation between distance l of display panels；Derived by the first relation obtained, the second relation and Gauss formula
The display parameters of 3 d light fields display system, including the distance of: described two dimension convex lens array with described display panels
L, described two dimension convex lens array and described hologram functional screen between distance L, described two dimension convex lens array in each convex
The diameter P of lens, the focal distance f of described convex lens, center distance g of adjacent described convex lens, and described hologram functional screen
Angle of divergence alpha.The 3 d light fields display system obtained by said method has certain angle of divergence, and beholder can be made from difference
Angle is watched with different distance, and has effectively corrected the distortion of actual lens image content.Additionally, from system structure
Can obtain, the 3 d light fields display system that the embodiment of the present invention provides shows compared to light field based on projector array, tool
Have that volume is little, the advantage of easy regulation.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
Each embodiment in this specification all uses relevant mode to describe, identical similar portion between each embodiment
Dividing and see mutually, what each embodiment stressed is the difference with other embodiments.Real especially for system
For executing example, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant part sees embodiment of the method
Part illustrate.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in protection scope of the present invention
In.
Claims (9)
1. a 3 d light fields display system, it is characterised in that including: display panels, two dimension convex lens array and holography
Function screen；
Described two dimension convex lens array is arranged between described display panels and described hologram functional screen；
The distance of described two dimension convex lens array and described display panels is l, described two dimension convex lens array with described entirely
Distance between breath function screen is L, a diameter of P of each convex lens in described two dimension convex lens array, described convex lens
Focal length is f, and the center distance of adjacent described convex lens is g；
Described two dimension convex lens array and distance l of described display panels, described two dimension convex lens array and described holography
Distance L between function screen and the focal distance f of described convex lens meet Gaussian imaging equation:
The angle of divergence alpha of described hologram functional screen is:
α=arctan (g/L)-arctan (P/L).
3 d light fields display system the most according to claim 1, it is characterised in that described convex lens generally circular in shape or
Regular polygon.
3 d light fields display system the most according to claim 2, it is characterised in that described convex lens generally circular in shape,
Described diameter P is the diameter of described convex lens.
3 d light fields display system the most according to claim 2, it is characterised in that being shaped as of described convex lens is the most polygon
Shape, described diameter P is the circumscribed circle diameter of described convex lens.
3 d light fields display system the most according to claim 1, it is characterised in that described two dimension convex lens array is pros
Shape arrangement or cellular arrangement.
6. the display parameters of a 3 d light fields display system determine method, it is characterised in that be applied to described in claim 1
3 d light fields display system, including:
View angle theta and formula is may be viewed by according to default system
Determine described two dimension convex lens array with in distance l of described display panels and adjacent described convex lens in the heart
The first relation between g；
According to default monocular resolution Rsingle, total resolution R of described display panelstotal, beholder is to described holography
Distance D of function screen and formula
Determine described two dimension convex lens array and described hologram functional screen between distance L and described two dimension convex lens array with
The second relation between distance l of described display panels；
According to preset described two dimension convex lens array and described hologram functional screen between the value of distance L, described first relation and
Described second relation, calculates center distance g of adjacent described convex lens and described two dimension convex lens array and described liquid crystal
The value of distance l of display floater；
Value according to distance L between described two dimension convex lens array and described hologram functional screen, described two dimension convex lens array
Value and formula with distance l of described display panels
Determine the focal distance f of each convex lens in described two dimension convex lens array and the value of diameter P；
Value according to described diameter P, the value of center distance g of adjacent described convex lens, described two dimension convex lens array are with described
The value of distance L between hologram functional screen and formula
α=arctan (g/L)-arctan (P/L),
Determine the angle of divergence alpha of described hologram functional screen.
The display parameters of 3 d light fields display system the most according to claim 6 determine method, it is characterised in that described pre-
If system may be viewed by view angle theta in the range of: 30 degree≤θ≤60 degree.
The display parameters of 3 d light fields display system the most according to claim 6 determine method, it is characterised in that described
One relation is:
Described second relation is:
The display parameters of 3 d light fields display system the most according to claim 6 determine method, it is characterised in that described two
The dimension square arrangement of convex lens array or cellular arrangement.
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| CN106507096A (en) * | 2016-11-24 | 2017-03-15 | 北京邮电大学 | A kind of tracing type ground light field 3D display packing and system with super large visual angle |
| CN107563088A (en) * | 2017-09-14 | 2018-01-09 | 北京邮电大学 | A kind of light field display device emulation mode based on Ray Tracing Algorithm |
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| CN109001852A (en) * | 2018-08-01 | 2018-12-14 | 张家港康得新光电材料有限公司 | A kind of lens array, 3D rendering acquisition system and 3D display imaging system |
| CN110133858A (en) * | 2018-02-08 | 2019-08-16 | 深圳市泛彩溢实业有限公司 | A kind of information reduction lens array plate |
| CN110297333A (en) * | 2019-07-08 | 2019-10-01 | 中国人民解放军陆军装甲兵学院 | A kind of light field display system adjusting method and system |
| CN114815286A (en) * | 2022-04-11 | 2022-07-29 | 北京邮电大学 | Parameter determination method, device and equipment of full-parallax three-dimensional light field display system |
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| CN114815286B (en) * | 2022-04-11 | 2023-07-21 | 北京邮电大学 | Parameter determination method, device and equipment of full parallax three-dimensional light field display system |
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