WO2021077704A1

WO2021077704A1 - Method of cutting optical imaging element

Info

Publication number: WO2021077704A1
Application number: PCT/CN2020/086932
Authority: WO
Inventors: 颜展; 张兵; 韩成
Original assignee: 像航（上海）科技有限公司
Priority date: 2019-10-25
Filing date: 2020-04-26
Publication date: 2021-04-29
Also published as: CN110780457A

Abstract

Disclosed is a method of cutting an optical imaging element, comprising the following steps: determining a viewpoint of an aerial image on the basis of an application scenario, where the viewpoint is a point from which a user views the aerial image; determining a specific display position of the aerial image on the basis of the viewpoint; determining an optimal reflection region of an optical imaging element on the basis of the position of the viewpoint and the specific display position of the aerial image; determining a posture and a position of the optical imaging element on the basis of the optimal reflection region; projecting the viewpoint along multiple directions to a plane in which the optical imaging element is located, where the multiple directions are directions connecting the viewpoint to each point of an outline of the aerial image, the viewpoint is not within the aerial image, and the aerial image is located between the viewpoint and the optical imaging element; forming a projection region by enclosing all projected points of the viewpoint on the plane in which the optical imaging element is located; and performing cutting on the optical imaging element on the basis of the outline of the projection region. The present invention is capable of ensuring an unchanged image quality, reducing costs, saving floor space, and expanding application scenarios.

Description

Cutting method of optical imaging element

Technical field

The present invention relates to the manufacturing technology of optical elements, in particular to a cutting method of optical imaging elements.

Background technique

The prior art optical imaging element (microchannel matrix optical waveguide plate) is used for non-medium floating imaging, but now it is generally manufactured by standardized or modular manufacturing, and its size and shape are fixed, and in actual manufacturing, the element The size of is generally large, and in actual application scenarios, there are often site and space restrictions. Not only may the size be smaller, but also strict requirements may be imposed on the specific shape. At the same time, due to the limitation of the imaging principle, Many imaging units in the components actually fail to function. Therefore, the size and shape of the existing optical imaging components are difficult to adapt to actual application scenarios, and commercial promotion and large-scale applications are quite difficult.

Summary of the invention

According to an embodiment of the present invention, a method for cutting an optical imaging element is provided, which includes the following steps:

Determine a viewpoint of aerial imaging according to the application scenario, where the viewpoint is a viewpoint from which a user views aerial imaging;

Determine the specific display position of aerial imaging according to the viewpoint;

Determining the optimal reflection area of the optical imaging element according to the position of the viewpoint and the specific display position of the aerial imaging;

Determining the posture and position of the optical imaging element according to the optimal reflection area;

Project the viewpoint to the plane where the optical imaging element is located in multiple directions, where the multiple directions are the connection directions between the viewpoint and each point of the contour of the aerial imaging, and the viewpoint is not inside the aerial imaging , The aerial imaging is located between the viewpoint and the optical imaging element;

All projection points of the viewpoint on the plane where the optical imaging element is located enclose a projection area;

The optical imaging element is cut out according to the outline of the projection area.

Further, taking the viewpoint as a starting point, the aerial imaging is irradiated with several rays, and the several rays form a shadow of the aerial imaging on the plane where the optical imaging element is located, and the shadow is a projection area.

Further, the ray is a virtual light, and the shadow is a virtual shadow.

Further, the actual rays of the ray are simulated by real objects in the aerial imaging, and the shadows are actual shadows.

Further, the optical imaging element is a microchannel matrix optical waveguide plate.

Further, the optical imaging element includes a light-transmitting laminate arranged in multiple layers, and each layer of the light-transmitting laminate includes a plurality of transparent strips attached side by side, and the bonding surface of the transparent strip and/or the bonding surface The opposite surface is provided with a reflective surface, the reflective surface is made of vaporized/plated metal, or a pasted reflective film, and the transparent strips of the adjacent layers are orthogonal to each other.

Further, the angle between the two sides of the optimal reflection area and the two orthogonal transparent bars is not less than 15°.

Further, the body of the aerial imaging and the aerial imaging are symmetrical with respect to the optical imaging element, and the viewpoint is located in the optimal reflection zone.

The posture of the optical imaging element includes the direction of the plane of the light-transmitting laminate and the direction of the transparent strip.

According to the cutting method of the optical imaging element according to the embodiment of the present invention, the imaging quality can be kept unchanged, the cost can be reduced, the occupied space can be saved, and the use scene can be expanded.

It should be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the claimed technology.

Description of the drawings

FIG. 1 is a method flowchart of a method for cutting an optical imaging element according to an embodiment of the present invention;

2 is a schematic diagram of an orthogonal structure of an optical imaging element according to an optical imaging element cutting method according to an embodiment of the present invention;

3 is a schematic diagram of the principle of the optimal reflection area of the cutting method of the optical imaging element according to the embodiment of the present invention;

4 is one of the schematic diagram examples of the projection of the viewpoint on the plane of the optical imaging element according to the cutting method of the optical imaging element according to the embodiment of the present invention;

5 is a schematic diagram of the structure of the optical imaging element cut according to the projection area in FIG. 4;

6 is the second example of the projection of the viewpoint on the plane of the optical imaging element according to the cutting method of the optical imaging element according to the embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of the optical imaging element cut according to the projection area in FIG. 6.

Detailed ways

Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the present invention will be further explained.

First, the cutting method of the optical imaging element according to the embodiment of the present invention will be described with reference to FIGS. 1-7, which is used for the production of optical imaging elements, which can cut various shapes of optical imaging elements, and has a wide range of application scenarios.

As shown in Figures 1-7, the optical imaging element cutting method according to the embodiment of the present invention, in this embodiment, as shown in Figures 2 and 3, the optical imaging element is a micro-channel matrix optical waveguide flat plate, including a multilayer stack The light-transmitting laminate 1 is provided, and each layer of the light-transmitting laminate 1 includes a plurality of transparent strips 11 attached side by side. The bonding surface of the transparent strip 11 and/or the opposite surface of the bonding surface is provided with a reflective surface. Pasted reflective film or vaporized/plated metal layer, vaporized/plated silver or aluminum, etc., the transparent strips 11 of adjacent layers are orthogonal to each other, and the method of cutting the optical imaging element includes the following steps:

In step 1, as shown in Figures 1, 4, and 6, the aerial imaging viewpoint E is determined according to the application scenario, assuming that the coordinates of the viewpoint are E(x0, y0, z0), and the viewpoint is the viewing point of the user viewing aerial imaging point.

In step 2, as shown in Figures 1, 4, and 6, according to the viewpoint E, the specific display position of the aerial imaging Q is determined, assuming that the set of points of the aerial imaging Q {Tn(xn,yn,zn)|n∈ N}.

In step 3, as shown in Figures 1 and 3, the optimal reflection area 2 of the optical imaging element is determined according to the position of the viewpoint E and the specific position of the aerial imaging Q; in this embodiment, two of the optimal reflection area 2 The angle between the side boundary and the two orthogonal transparent strips 11 is not less than 15°, the boundary angle range of the optimal reflection zone 2 is not more than 60°, and 60° is the best and maximum range to ensure the best imaging effect .

In step 4, as shown in Figures 1, 4, and 6, the posture and position of the optical imaging element are determined according to the optimal reflection zone 2; in this embodiment, the body of the aerial imaging Q and the aerial imaging Q are symmetrical with respect to the optical imaging element , The viewpoint E is located in the optimal reflection zone 2, therefore, the posture of the optical imaging element includes: the direction of the plane of the light-transmitting laminate 1 and the direction of the transparent strip 11.

In step 5, as shown in Figures 1, 4, and 6, the viewpoint E is projected to the plane where the optical imaging element is located in multiple directions. Assuming that the plane is Ax+By+Cz+D=0, the multiple directions are the viewpoints. The direction of the line connecting each point of the contour of E and the aerial imaging Q, that is, the viewpoint E is projected to the plane where the optical imaging element is located through the ray ETn. In this embodiment, the viewpoint E is not inside the aerial imaging, and the aerial imaging Q is located at the viewpoint E and Between optical imaging elements.

In step 6, as shown in FIGS. 1, 4, and 6, the viewpoint E is on the plane where the optical imaging element is located, that is, all the projection points of Ax+By+Cz+D=0 enclose a projection area.

In this embodiment, the projection of point E on the plane where the optical imaging element is located can be achieved by the following two methods, and the projection area can be obtained:

method one:

As shown in Figures 1, 4, and 6, taking the viewpoint E as the starting point, the coordinates of the ray ETn are obtained, and the aerial image Q is irradiated virtually, ie {Tn(xn,yn,zn)|n∈N}, the ray ETn and Ax+By +Cz+D=0 intersect, after the point set of aerial imaging Q is virtually occluded, the set of all the intersection points of the shadow formed is {Tn'(xn',yn',zn')|n∈N}, this set is Projection area. Therefore, in this method, the user's line of sight is simulated through the coordinate system and the viewpoint E, the aerial imaging Q, and the coordinates of the plane where the optical imaging element is located, and virtual light rays are used as rays to obtain virtual shadows.

Method Two:

As shown in Figures 1, 4, and 6, taking the viewpoint E as the starting point, the real object is illuminated by the actual light source. The real object is simulated according to the contour of the aerial imaging Q. After the real object is blocked, it is left on the plane where the optical imaging element is located. The actual shadow is the projection area.

In step 7, as shown in Figures 1, 5, and 7, the optical imaging element is cut out according to the outline of the projection area, that is, the minimum shape and size of the optical imaging element of the microchannel matrix optical waveguide plate, which greatly saves consumables and costs. , And save floor space. Moreover, the shape of the projection area can be various shapes, therefore, the application scenarios are greatly expanded.

Above, the cutting method of the optical imaging element according to the embodiment of the present invention is described with reference to FIGS. 1-7, which can not only ensure the imaging quality is unchanged, but also reduce the cost, save the occupied space, and expand the use scene.

It should be noted that in this specification, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements , But also includes other elements that are not explicitly listed, or elements inherent to this process, method, article, or equipment. Without more restrictions, the element defined by the sentence "including a cutting method of an optical imaging element" does not exclude the existence of other same elements in the process, method, article, or equipment including the element.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as limiting the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

A method for cutting an optical imaging element, which is characterized in that it comprises the following steps:

Determine a viewpoint of aerial imaging according to the application scenario, where the viewpoint is a viewpoint from which a user views aerial imaging;

Determine the specific display position of aerial imaging according to the viewpoint;

Determining the optimal reflection area of the optical imaging element according to the position of the viewpoint and the specific display position of the aerial imaging;

Determining the posture and position of the optical imaging element according to the optimal reflection area;

Project the viewpoint to the plane where the optical imaging element is located in multiple directions, where the multiple directions are the connection directions between the viewpoint and each point of the contour of the aerial imaging, and the viewpoint is not inside the aerial imaging , The aerial imaging is located between the viewpoint and the optical imaging element;

All projection points of the viewpoint on the plane where the optical imaging element is located enclose a projection area;

The optical imaging element is cut out according to the outline of the projection area.
The method for cutting an optical imaging element according to claim 1, wherein the aerial imaging is irradiated with a plurality of rays from the viewpoint as a starting point, and the plurality of rays form the optical imaging element on the plane where the optical imaging element is located. The shadow imaged in the air, the shadow is the projection area.
3. The method for cutting an optical imaging element according to claim 2, wherein the rays are virtual rays, and the shadows are virtual shadows.
The cutting method of an optical imaging element according to claim 2, wherein the ray is actual light, the aerial imaging is simulated by a real object, and the shadow is an actual shadow.
8. The method for cutting an optical imaging element according to claim 1, wherein the optical imaging element is a microchannel matrix optical waveguide plate.
The method for cutting an optical imaging element according to claim 5, wherein the optical imaging element comprises a light-transmitting laminated body laminated in multiple layers, and each layer of the light-transmitting laminated body comprises a plurality of transparent strips attached side by side. , The bonding surface of the transparent strip and/or the opposing surface of the bonding surface is provided with a reflective surface, the reflective surface is a vaporized/plated metal, or a pasted reflective film, and the transparent strips of the adjacent layers are aligned with each other cross.
8. The method for cutting an optical imaging element according to claim 6, wherein the angle between the two sides of the optimal reflection area and the two orthogonal transparent bars is not less than 15°.
7. The method for cutting an optical imaging element according to claim 7, wherein the aerial imaging body and the aerial imaging are symmetrical with respect to the optical imaging element, and the viewpoint is located in the optimal reflection zone.
8. The method for cutting an optical imaging element according to claim 8, wherein the posture of the optical imaging element includes the direction of the plane of the light-transmitting laminate and the direction of the transparent strip.