CN205450445U - Augmented reality is lens for glasses based on free -form surface - Google Patents

Abstract

The utility model relates to a augmented reality technique. Augmented reality is lens for glasses based on free -form surface, including a fiber waveguide lens, the fiber waveguide lens is equipped with light -emitting end, a light transfer unit, an income light end, the fiber waveguide lens is equipped with at least three -layer transflective film, and each transflective film is parallel to each other, and transflective film is located the light -emitting end, the fiber waveguide lens still is equipped with a coupling prism, and the coupling prism lies in into the light end, and the lower terminal surface of coupling prism is a transmission curved surface, and the transmission curved surface is the convex surface shape of an evagination, and the up end of coupling prism is a reflecting surface, and reflecting surface is the convex surface shape of an evagination, scribbles reflective coating on reflecting surface 's the inside wall.

Description

Augmented reality spectacle lens based on free form surface

Technical field

This utility model relates to augmented reality, is specifically related to augmented reality glasses.

Background technology

Augmented reality is a kind of by new technique integrated to real world information and virtual world information, can be that people offer convenience in daily life.It can realize surmounting the visual experience of electronic curtain, while representing the information of real world, virtual information is shown simultaneously, and the information of digital world and real world is complementary to one another and superposition, and the two perfectly combines and is presented in user's eye.

But the most existing augmented reality glasses, generally deposit that the angle of visual field in use is too small causes the user visual field the best, and the thickest defect causing entirety to lay particular stress on of eyeglass, thus reduce satisfaction of users.

Utility model content

The purpose of this utility model is, it is provided that augmented reality spectacle lens based on free form surface.

This utility model is solved the technical problem that to realize by the following technical solutions:

Augmented reality spectacle lens based on free form surface, including a fiber waveguide eyeglass, described fiber waveguide eyeglass is provided with one and goes out light end, an optical transport portion, a light inputting end；It is characterized in that, described fiber waveguide eyeglass is provided with at least three layers of semi-transparent semi-reflecting film, and each described semi-transparent semi-reflecting film is parallel to each other, described semi-transparent semi-reflecting film be positioned at described in go out light end；

Described fiber waveguide eyeglass is additionally provided with a couple prism, described couple prism is positioned at described light inputting end, the lower surface of described couple prism is a transmission curved surface, described transmission curved surface is the convex shape of an evagination, the upper surface of described couple prism is a reflecting curved surface, described reflecting curved surface is the convex shape of an evagination, and the medial wall of described reflecting curved surface scribbles reflective coating.

In described transmission curved surface, described reflecting curved surface, the equation of at least one meets one of three below equation:

A () anamorphic aspherical surface, he has the radius of curvature of both direction, and can differ, and this curved surface is plane symmetry curved surface, and it has two planes of symmetry, respectively about yoz, xoz plane symmetry.

$z=\frac{C_x{x}^2+C_y{y}^2}{1+{\{1-(1+K_x)C_x^2{x}^2-(1+K_y)C_y^2{y}^1\}}^{1/2}}+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{A}_i{\{(1-P_i)x^2+(1+P_i)y^2\}}^{i+1}$

C_xIt is the radius of curvature of X-direction, C in curved surface X Z plane_yIt is the curved surface radius of curvature of Y-direction, K in Y Z plane_xIt is the whose conic coefficient of curved surface X-direction, K_yIt is the whose conic coefficient of curved surface Y-direction, A_iIt it is 4,6,8 ... 2n rank rotation asymmetry coefficient.

(b) XY polynomial surface,

$\begin{array}{c}z(x,y)=\frac{C(x^2+y^2)}{1+{\[1-(1+k)C^2(x^2+y^2)\]}^{1/2}}\\ +c_4{y}^2+c_6{x}^2\\ +c_7{y}^3+c_9{\mathrm{yx}}^2\\ +c_{11}{y}^4+c_{13}{y}^2{x}^2+c_{15}{x}^4\\ +c_{16}{y}^5+c_{18}{y}^3{x}^2+c_{20}{\mathrm{yx}}^4\\ +c_{22}{y}^6+c_{24}{y}^4{x}^2+c_{26}{y}^2{x}^4+c_{28}{x}^6\\ +c_{29}{y}^7+c_{31}{y}^5{x}^2+c_{33}{y}^3{x}^4+c_{35}{\mathrm{yx}}^6\\ +...\end{array}$

Wherein C is surface curvature, c_jFor multinomial coefficient.

C () toroid is a circle or the surface of revolution of plane curve of order n shape, a circle or plane curve of order n are generated around coplanar with this curve axle revolution.

$z=\frac{{\mathrm{cx}}^2}{1+{\[1-(1+k)c^2{x}^2\]}^{1/2}}+\underset{\‾}{A}{x}^4+\underset{\‾}{B}{x}^6+\underset{\‾}{C}{x}^8+\underset{\‾}{D}{x}^{10}$

Wherein c is radius of curvature, and k is quadratic surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.

This utility model is in use, the light that image display sends is transmitted into couple prism via the transmission curved surface of couple prism, then fiber waveguide sheet is entered after being reflected by reflecting curved surface, advance in described light wave guide card inner total reflection, there is certain reflection and transmission in light, finally occurs the light of reflection through the pupil entering observer bottom glass substrate successively after being irradiated to the incidence surface of semi-transparent semi-reflecting film.

As a kind of preferred version, described fiber waveguide eyeglass is additionally provided with a plate-shaped light wave guide card, and using described light wave guide card as described optical transport portion, described couple prism is positioned at described light wave guide card one end, and described reflective coating is towards described light wave guide card；Described semi-transparent semi-reflecting film is positioned at the described light wave guide card other end, can be provided with transparent glass between two adjacent described semi-transparent semi-reflecting films, and the semi-transparent semi-reflecting film near described light wave guide card connects described light wave guide card by transparent glass.

As another kind of preferred version, described fiber waveguide eyeglass is additionally provided with a plate-shaped light wave guide card, and using described light wave guide card as described optical transport portion, described couple prism is positioned at described light wave guide card one end, and described reflective coating is towards described light wave guide card；Described semi-transparent semi-reflecting film embeds in described light wave guide card, and described semi-transparent semi-reflecting film is positioned at the described light wave guide card one end away from described couple prism.

Described semi-transparent semi-reflecting film is an angle with the lower surface of described light wave guide card, and described angle is 20～30 degree, preferably 24.5 degree.Using this angle, the angle of visual field more existing augmented reality glasses improve a lot, and the angle of visual field can reach 36 degree, and visual range is about 18mm.Angle formed by each described semi-transparent semi-reflecting film and described light wave guide card is the most equal.

Described semi-transparent semi-reflecting film more increases the closer to described couple prism, reflectance, and transmitance more subtracts.

Described light wave guide card thickness is 1.8mm～2.2mm, preferably 2mm.Light wave guide card thickness reduces, and reduces the weight of glasses, improves the comfort of user.

Accompanying drawing explanation

Fig. 1 is that this utility model is at the light path schematic diagram used.

Detailed description of the invention

For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, this utility model is expanded on further below in conjunction with being specifically illustrating.

With reference to Fig. 1, augmented reality spectacle lens based on free form surface, including a lens body, the fiber waveguide eyeglass that lens body includes mirror holder, is arranged on mirror holder, fiber waveguide eyeglass is provided with one and goes out light end, an optical transport portion, a light inputting end；Fiber waveguide eyeglass is provided with at least three layers of semi-transparent semi-reflecting film 2, and each semi-transparent semi-reflecting film 2 is parallel to each other, and semi-transparent semi-reflecting film 2 is positioned at light end；Fiber waveguide eyeglass is additionally provided with a couple prism, couple prism is positioned at light inputting end, the lower surface of couple prism is a transmission curved surface 4, transmission curved surface 4 is the convex shape of an evagination, the upper surface of couple prism is a reflecting curved surface 3, reflecting curved surface 3 is the convex shape of an evagination, and the medial wall of reflecting curved surface scribbles reflective coating.

In transmission curved surface, reflecting curved surface, the equation of at least one meets one of three below equation:

A () anamorphic aspherical surface, he has the radius of curvature of both direction, and can differ, and this curved surface is plane symmetry curved surface, and it has two planes of symmetry, respectively about yoz, xoz plane symmetry.

$z=\frac{C_x{x}^2+C_y{y}^2}{1+{\{1-(1+K_x)C_x^2{x}^2-(1+K_y)C_y^2{y}^1\}}^{1/2}}+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{A}_i{\{(1-P_i)x^2+(1+P_i)y^2\}}^{i+1}$

C_xIt is the radius of curvature of X-direction, C in curved surface X Z plane_yIt is the curved surface radius of curvature of Y-direction, K in Y Z plane_xIt is the whose conic coefficient of curved surface X-direction, K_yIt is the whose conic coefficient of curved surface Y-direction, A_iIt it is 4,6,8 ... 2n rank rotation asymmetry coefficient.

(b) XY polynomial surface,

$\begin{array}{c}z(x,y)=\frac{C(x^2+y^2)}{1+{\[1-(1+k)C^2(x^2+y^2)\]}^{1/2}}\\ +c_4{y}^2+c_6{x}^2\\ +c_7{y}^3+c_9{\mathrm{yx}}^2\\ +c_{11}{y}^4+c_{13}{y}^2{x}^2+c_{15}{x}^4\\ +c_{16}{y}^5+c_{18}{y}^3{x}^2+c_{20}{\mathrm{yx}}^4\\ +c_{22}{y}^6+c_{24}{y}^4{x}^2+c_{26}{y}^2{x}^4+c_{28}{x}^6\\ +c_{29}{y}^7+c_{31}{y}^5{x}^2+c_{33}{y}^3{x}^4+c_{35}{\mathrm{yx}}^6\\ +...\end{array}$

Wherein C is surface curvature, c_jFor multinomial coefficient.

C () toroid is a circle or the surface of revolution of plane curve of order n shape, a circle or plane curve of order n are generated around coplanar with this curve axle revolution.

$z=\frac{{\mathrm{cx}}^2}{1+{\[1-(1+k)c^2{x}^2\]}^{1/2}}+\underset{\‾}{A}{x}^4+\underset{\‾}{B}{x}^6+\underset{\‾}{C}{x}^8+\underset{\‾}{D}{x}^{10}$

Wherein c is radius of curvature, and k is quadratic surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.

This utility model is in use, the light that image display sends is transmitted into couple prism via the transmission curved surface of couple prism, then fiber waveguide sheet is entered after being reflected by reflecting curved surface, advance in light wave guide card inner total reflection, there is certain reflection and transmission in light, finally occurs the light of reflection through the pupil entering observer bottom glass substrate successively after being irradiated to the incidence surface of semi-transparent semi-reflecting film 2.

As a kind of preferred version, fiber waveguide eyeglass is additionally provided with a plate-shaped light wave guide card, and using light wave guide card as optical transport portion, couple prism is positioned at light wave guide card one end, and reflective coating is towards light wave guide card；Semi-transparent semi-reflecting film is positioned at the light wave guide card other end, can be provided with transparent glass between two adjacent semi-transparent semi-reflecting films, and the semi-transparent semi-reflecting film near light wave guide card connects light wave guide card by transparent glass.As another kind of preferred version, such as Fig. 1, fiber waveguide eyeglass is additionally provided with a plate-shaped light wave guide card 1, and using light wave guide card 1 as optical transport portion, couple prism is positioned at light wave guide card 1 one end, and reflective coating is towards light wave guide card 1；Semi-transparent semi-reflecting film 2 embeds in light wave guide card 1, and semi-transparent semi-reflecting film 2 is positioned at the light wave guide card 1 one end away from couple prism.Semi-transparent semi-reflecting film 2 more increases the closer to couple prism, reflectance, and transmitance more subtracts.Light wave guide card thickness is 1.8mm～2.2mm, preferably 2mm.Light wave guide card thickness reduces, and reduces the weight of glasses, improves the comfort of user.

Semi-transparent semi-reflecting film 2 is an angle with the lower surface of light wave guide card, and angle is 20～30 degree, preferably 24.5 degree.Using this angle, the angle of visual field more existing augmented reality glasses improve a lot, and the angle of visual field can reach 36 degree, and visual range is about 18mm.Angle formed by each semi-transparent semi-reflecting film 2 and light wave guide card is the most equal.

Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.

Claims (8)

1. augmented reality spectacle lens based on free form surface, including a fiber waveguide eyeglass, described fiber waveguide eyeglass is provided with one and goes out light end, an optical transport portion, a light inputting end；It is characterized in that, described fiber waveguide eyeglass is provided with at least three layers of semi-transparent semi-reflecting film, and each described semi-transparent semi-reflecting film is parallel to each other, described semi-transparent semi-reflecting film be positioned at described in go out light end；

Described fiber waveguide eyeglass is additionally provided with a couple prism, described couple prism is positioned at described light inputting end, the lower surface of described couple prism is a transmission curved surface, described transmission curved surface is the convex shape of an evagination, the upper surface of described couple prism is a reflecting curved surface, described reflecting curved surface is the convex shape of an evagination, and the medial wall of described reflecting curved surface scribbles reflective coating.

Augmented reality spectacle lens based on free form surface the most according to claim 1, it is characterised in that in described transmission curved surface, described reflecting curved surface, the equation of at least one meets one of three below equation:

(a)

C_xIt is the radius of curvature of X-direction, C in curved surface X Z plane_yIt is the curved surface radius of curvature of Y-direction, K in Y Z plane_xIt is the whose conic coefficient of curved surface X-direction, K_yIt is the whose conic coefficient of curved surface Y-direction, A_iIt it is 4,6,8 ... 2n rank rotation asymmetry coefficient；

(b)

Wherein C is surface curvature, c_jFor multinomial coefficient；

(c)

Wherein c is radius of curvature, and k is quadratic surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.

Augmented reality spectacle lens based on free form surface the most according to claim 1, it is characterized in that, described fiber waveguide eyeglass is additionally provided with a plate-shaped light wave guide card, using described light wave guide card as described optical transport portion, described couple prism is positioned at described light wave guide card one end, and described reflective coating is towards described light wave guide card；Described semi-transparent semi-reflecting film is positioned at the described light wave guide card other end, is provided with transparent glass between two adjacent described semi-transparent semi-reflecting films, and the semi-transparent semi-reflecting film near described light wave guide card connects described light wave guide card by transparent glass.

Augmented reality spectacle lens based on free form surface the most according to claim 3, it is characterised in that described semi-transparent semi-reflecting film is an angle with the lower surface of described light wave guide card, and described angle is 20～30 degree.

Augmented reality spectacle lens based on free form surface the most according to claim 4, it is characterised in that described semi-transparent semi-reflecting film more increases the closer to described couple prism, reflectance, and transmitance more subtracts.

Augmented reality spectacle lens based on free form surface the most according to claim 1, it is characterized in that, described fiber waveguide eyeglass is additionally provided with a plate-shaped light wave guide card, using described light wave guide card as described optical transport portion, described couple prism is positioned at described light wave guide card one end, and described reflective coating is towards described light wave guide card；Described semi-transparent semi-reflecting film embeds in described light wave guide card, and described semi-transparent semi-reflecting film is positioned at the described light wave guide card one end away from described couple prism.

Augmented reality spectacle lens based on free form surface the most according to claim 6, it is characterised in that described semi-transparent semi-reflecting film is an angle with the lower surface of described light wave guide card, and described angle is 20～30 degree.

Augmented reality spectacle lens based on free form surface the most according to claim 7, it is characterised in that described semi-transparent semi-reflecting film more increases the closer to described couple prism, reflectance, and transmitance more subtracts.