Composite multi-plane wide-angle light reflex reflector

Abstract

The utility model relates to the technical field of imaging optics, in particular to a composite multi-plane wide-angle light reflex reflector. The retro-reflection lens is formed by combining two or more retro-reflection lenses located on different planes, a plurality of three-face right-angle reflection units are arranged on the upper surface or in the retro-reflection lens located on each plane, and any two reflection planes in each three-face right-angle reflection unit are perpendicular to each other. According to the composite multi-plane large-angle light reflex reflector, light in a large-angle divergent light beam emitted by a certain light emitting point in an object space image source can be retro-reflected according to the incident angles of the light, so that the retro-reflected light is converged to the same mirror image light spot in the air again, and the light is retro-reflected. And the re-diverging angle after the mirror image light spots are converged is greater than 90 degrees, so that a suspended mirror image with a visual angle greater than 90 degrees is provided for an observer.

Description

Technical Field

[0001] The utility model relates to the technical field of imaging optics, in particular to a composite multi-plane large-angle light return reflector. Background Art

[0002] With the development of optical display technology, more and more electronic products are using physical screens for display. The mobile phones, computers, car central control screens, etc. that we use daily need to be placed with one or more physical display screens to solve the problem of displaying information content.

[0003] Compared with physical display screens with media, the media-free floating display technology has a strong sense of technology due to its media-free floating display characteristics. At the same time, the media-free floating display avoids the contact between the user and the physical display device, reducing the possibility of cross-infection of germs. It has very broad application prospects in elevator buttons, hospital self-service registration and payment, ATM and other fields.

[0004] The non-medium suspended display needs to collect and reconstruct the imaging light emitted by the physical display screen, so that the divergent light can be converged in the air to form an image. The "two-sided right-angle reflective lens" or single-plane retroreflective film commonly used in the non-medium air suspended display is a traditional single-plane retroreflective film. Since the incident angle does not exceed 90 degrees, for the imaging light emitted from the same light point, if the angle between the light rays in the divergent light beam is greater than 90 degrees, then the retroreflective film on the same plane cannot reflect the incident light rays emitted from the same light point at an angle greater than 90 degrees at the same time and then converge again. Therefore, when used for non-medium air imaging, its viewing angle will not be greater than 90 degrees, which has application limitations.

[0005] like Figure 1 and Figure 2 As shown in the figure, the most relevant non-medium suspension display technology uses a DCRAdihedral corner reflector array lens to reflect the image of the physical display below or on either side to the other side of the DCRAdihedral corner reflector array lens, forming a non-medium suspension display effect in the air. This technology is made of two pieces of flat glass bonded by several glass strips through optical glue, and requires optical reflective surfaces to be plated on both sides of the glass strips. The process is complex, the yield is low, and the cost is high.

[0006] At present, there is a common technical difficulty in the DCRA dihedral corner reflector array lens technology or single plane retroreflective film, which affects the actual promotion and application of the technology. The existing products have the disadvantage of a viewing angle of less than 90°. Since a single DCRA dihedral corner reflector array lens or a single plane retroreflective film is used to reflect light and converge to form an image, in theory, the incident angle of the DCRA dihedral corner reflector array or the single plane retroreflective film will not exceed the 90° range, so the viewing angle of the retroreflected light point will not exceed ±45°, that is, if it exceeds the ±45° range directly in front of the suspended image, the suspended image is not visible, and the viewer's experience is limited. Utility Model Content

[0007] The utility model provides a composite multi-plane large-angle light return reflector, aiming to solve the technical defects of the existing medium-free air suspension display.

[0008] The utility model provides a composite multi-plane large-angle light return reflector, which is composed of two or more return reflective lenses located in different planes. A plurality of three-sided right-angle reflection units are arranged on the upper surface or inside of the return reflective lenses located in each plane, and any two reflection planes in each of the three-sided right-angle reflection units are perpendicular to each other.

[0009] As a further improvement of the present invention, a plurality of reflection areas are provided in the retro-reflective lens, and the plurality of reflection areas are arranged in an array on the upper surface or inside of the retro-reflective lens, and a three-sided right-angle reflection unit is provided in each of the reflection areas.

[0010] As a further improvement of the present invention, the vertices where the three reflection planes of the three-sided right-angle reflection unit intersect face toward the reflection area.

[0011] As a further improvement of the present invention, in each of the retro-reflective lenses, a plurality of the three-sided right-angle reflection units forming an array together constitute a lens reflection surface.

[0012] As a further improvement of the present invention, the angle formed by the lens reflective surface of each retro-reflective lens and the lens reflective surface of another retro-reflective lens is greater than 90°.

[0013] As a further improvement of the present invention, the types of array arrangements of the reflective areas include matrix arrangement, triangular staggered arrangement, petal-shaped arrangement, and concentric circle arrangement.

[0014] As a further improvement of the present invention, a plurality of the retro-reflective lenses are connected to each other, or a plurality of the retro-reflective lenses are spaced apart from each other.

[0015] As a further improvement of the present invention, the light incident into the three-sided right-angle reflection unit is reflected by the reflection planes three times and then retro-reflected in a direction parallel to the original incident direction.

[0016] As a further improvement of the present invention, a reflective film is plated on the inner side of the reflective plane.

[0017] The beneficial effect of the utility model is that the composite multi-plane large-angle light retro-reflector can retro-reflect the light in a large-angle divergent light beam (a divergent light beam greater than 90 degrees) emitted from a certain light-emitting point in the object-side image source according to the respective incident angles of the light beams, so that the retro-reflected light beams converge again on the same mirror light point in the air, and the angle of divergence of the mirror light point after convergence is greater than 90°, thereby providing an observer with a suspended mirror image with a viewing angle greater than 90°. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the first structural schematic diagram of the existing medium-free suspension display technology;

[0019] Figure 2 It is a second structural schematic diagram of the existing medium-free suspension display technology;

[0020] Figure 3 This is the overall structure diagram of the composite multi-plane large-angle light retro-reflector of the utility model;

[0021] Figure 4 It is a structural diagram of a single retro-reflective lens of the utility model;

[0022] Figure 5 This is a structural diagram of a three-sided right-angle reflection unit of the utility model;

[0023] Figure 6 This is a structural side view of the composite multi-plane large-angle light retro-reflector of the utility model;

[0024] Figure 7 It is a diagram showing the light emission direction of the light emitting point A in the composite multi-plane large-angle light retro-reflector of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 3 to 5As shown, a composite multi-plane large-angle light return reflector of the utility model is composed of two or more return reflective lenses 1 located in different planes, and a plurality of three-sided right-angle reflection units 2 are arranged on the upper surface or inside of the return reflective lens 1 located in each plane, and any two reflection planes 3 in each three-sided right-angle reflection unit 2 are perpendicular to each other.

[0027] The retro reflector is composed of two or more retro reflective lenses 1 on different planes, and a plurality of three-sided right-angle reflective units 2 are arranged on the upper surface or inside of each planar retro reflective lens 1. Any two planar reflective surfaces in the three-sided right-angle reflective unit 2 are perpendicular to each other, and the light incident into the three-sided right-angle reflective unit 2 is reflected by the three-fold reflective plane 3 and then retro-reflected in a direction parallel to the original incident direction.

[0028] A plurality of reflection areas 4 are arranged in an array on the upper surface or inside of the retro-reflective lens 1, and a three-sided right-angle reflection unit 2 is arranged in each reflection area 4. The vertices of the three reflection planes 3 of the three-sided right-angle reflection unit 2 face the reflection area 4, which can ensure that the three reflection planes face the direction of the incident light and reflect the incident light three times.

[0029] The types of array arrangement of the reflective area 4 include row-and-column arrangement, triangular staggered arrangement, petal-shaped arrangement, and concentric circle arrangement. The inner side of the reflective plane is coated with a reflective film. The core imaging component of the utility model adopts a flat-plate three-sided right-angle micro-mirror array, which can be realized by injection molding or embossing + coating process. The manufacturing process is convenient, which greatly reduces the cost and strongly promotes the large-scale popularization of medium-free suspension display products with large viewing angles.

[0030] In each retro-reflective lens 1, a plurality of three-sided right-angle reflective units 2 in an array together constitute a lens reflective surface. The angle formed by the lens reflective surface of each retro-reflective lens 1 and the lens reflective surface of another retro-reflective lens 1 is greater than 90°.

[0031] Multiple retro-reflective lenses 1 are connected to each other, or multiple retro-reflective lenses 1 are spaced from each other. Two or more retro-reflective lenses 1 are combined together, and the edges of the reflective lenses can be connected to each other or kept at a certain distance. The retro-reflective lenses 1 on different planes of the two reflective lenses, the reflective surface formed by the array of three right-angle reflective units 2 in each retro-reflective lens 1 and the reflective surface of another retro-reflective lens form an angle greater than 90°. In this way, the two reflector array panels are combined together to expand the retro-reflective angle to more than 90°.

[0032] like Figure 7As shown, the working principle of the composite multi-plane large-angle light return reflector is as follows: the divergent light emitted by the light point A forms a return reflection angle within 90 degrees on the reflection surface formed by a single three-sided right-angle reflector micro-unit array. When two reflector array plates with an angle greater than 90 degrees between them are combined together, the two return reflection lights with a return reflection angle within 90 degrees are superimposed and combined together, so that a return reflection light with a divergence angle greater than 90 degrees can be formed, thereby obtaining a real image point with a viewing angle greater than 90 degrees on the other side after the light point returns to convergence.

[0033] Compared with the optical materials of the medium-free suspension display currently on the market, since a single straight dihedral reflector is used to reflect light and converge into an image, light with an incident angle exceeding 45° is no longer reflected, so the actual visual angle cannot be greater than 90°, and the user experience is limited. The composite multi-plane large-angle light return reflector provided by the utility model can increase the visual angle. By combining two reflector array plates with an angle greater than 90 degrees between each other, the two return reflected light rays with a return reflection angle within 90 degrees are combined together, so that a return reflected light with a divergence angle greater than 90 degrees can be formed, making it possible to have a visual angle greater than 90°.

[0034] The composite multi-plane large-angle light return reflector proposed in the utility model effectively solves the problem of insufficient viewing angle of the current floating display, and brings feasibility to the implementation of medium-free floating display devices in the automotive industry. The relatively low production cost enables the technology to be applied to the consumer field, and it has a strong floating display effect, bringing significant economic and social benefits.

[0035] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A composite multi-plane large-angle light retroreflector, characterized in that: It is composed of two or more retro-reflective lenses in different planes, and a plurality of three-sided right-angle reflection units are arranged on the upper surface or inside of the retro-reflective lenses in each plane, and any two reflection planes in each of the three-sided right-angle reflection units are perpendicular to each other.

2. The composite multi-plane large-angle light retro-reflector according to claim 1, characterized in that: The retro-reflective lens is provided with a plurality of reflective regions, which are arranged in an array on the upper surface or inside of the retro-reflective lens, and each of the reflective regions is provided with a three-sided right-angle reflective unit.

3. The composite multi-plane large-angle light retro-reflector according to claim 2, characterized in that: The vertices of the three reflection planes of the three-sided right-angle reflection unit intersect toward the reflection area.

4. The composite multi-plane large-angle light retro-reflector according to claim 2, characterized in that: In each of the retro-reflective lenses, a plurality of the three-sided right-angle reflection units forming an array together constitute a lens reflection surface.

5. The composite multi-plane large-angle light retro-reflector according to claim 4, characterized in that: The angle formed by the lens reflection surface of each retro-reflective lens and the lens reflection surface of another retro-reflective lens is greater than 90°.

6. The composite multi-plane large-angle light retro-reflector according to claim 2, characterized in that: The types of array arrangements of the reflective regions include matrix arrangement, triangular staggered arrangement, petal-shaped arrangement, and concentric circle arrangement.

7. The composite multi-plane large-angle light retro-reflector according to claim 1, characterized in that: The multiple retro-reflective lenses are connected to each other, or the multiple retro-reflective lenses are spaced apart from each other.

8. The composite multi-plane large-angle light retro-reflector according to claim 1, characterized in that: After being reflected by three reflection planes, the light incident into the three-sided right-angle reflection unit is retro-reflected in a direction parallel to the original incident direction.

9. The composite multi-plane large-angle light retro-reflector according to claim 1, characterized in that: The inner side of the reflection plane is plated with a reflection film.

Images