CN113448145A

CN113448145A - Optical projection device and electronic device with same

Info

Publication number: CN113448145A
Application number: CN202010215093.5A
Authority: CN
Inventors: 李亦筑
Original assignee: Qisda Suzhou Co Ltd; Qisda Corp
Current assignee: Qisda Suzhou Co Ltd; Qisda Corp
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2021-09-28

Abstract

The invention discloses an optical projection device and an electronic device, wherein the optical projection device is used for optical projection of a sign, the optical projection device comprises a light source unit and a projection unit, the projection unit is solid and transparent, the projection unit is provided with a first surface and a second surface which are intersected, after the sign is irradiated by the light source unit, light enters the projection unit from the first surface and then is emitted from the second surface to form a virtual image of the sign. The optical projection device can realize the imaging of the label through the projection unit, has unique imaging, does not have the problem of ghost image, and has good ornamental texture.

Description

Optical projection device and electronic device with same

Technical Field

The present disclosure relates to optical projection apparatuses and electronic devices having the same, and particularly to a ghost-free optical projection apparatus and an electronic device having the same.

Background

With the development of technology, people seek higher and higher quality of electronic devices, and the expression mode of product labels (Logo) is more and more rich in technological sense. For example, the Logo representation is transformed from the physical way of the original printing or inscription to the imaging way of the optical projection.

However, in the conventional optical projection system, the Logo is imaged by a transparent flat plate (two transparent planes, an upper transparent plane and a lower transparent plane), and two virtual images are generated at this time, which causes a ghost image. Moreover, the virtual image with a ratio of 1:1 is relatively large in projection space when the size of the image is increased, which is not favorable for the miniaturization of the electronic device.

Therefore, it is necessary to provide a ghost-free manner to solve the above problems.

Disclosure of Invention

The invention aims to provide an optical projection device and an electronic device, which can present a virtual image of a sign for watching by optical projection.

The optical projection device is characterized by comprising a light source unit and a projection unit, wherein the projection unit is solid and transparent, the projection unit is provided with a first surface and a second surface which are intersected, and after light rays projected by the light source unit irradiate the sign, the light rays enter the projection unit from the first surface and then are emitted from the second surface, so that a unique virtual image of the sign is formed.

Preferably, the projection unit is a convex lens structure.

Preferably, the projection unit is a triangular prism structure.

Preferably, an included angle between the first surface and the second surface is an acute angle.

Preferably, the projection unit further has a third surface intersecting both the first surface and the second surface, an included angle between the first surface and the third surface ranges from 60 ° to 120 °, and an included angle between the second surface and the third surface is an acute angle.

Preferably, the first surface and the third surface are both provided with plano-convex lenses.

Preferably, the first face is disposed opposite the label.

Preferably, the light source unit is disposed perpendicular to the sign, and the optical projection apparatus further includes a projection chamber, and the light source unit and the sign are disposed on two adjacent surfaces of the projection chamber, respectively.

In order to achieve the above object, the present invention further provides an electronic device including the optical projection apparatus as described in any one of the above.

Preferably, the electronic device includes a transparent housing, the transparent housing includes the projection unit, and the virtual image can be viewed from the outside of the transparent housing; or, the electronic device includes a transparent housing, and the projection unit is located at the transparent housing and can view the virtual image from outside the transparent housing.

Compared with the prior art, the optical projection device can realize the optical imaging of the label through the projection unit, so that a viewer can see the only imaging image without the problem of ghost image, and the viewing texture is improved while the label is displayed.

Drawings

FIG. 1 is a schematic view of an optical projection apparatus according to the present invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Certain terms are used throughout the description and following claims to refer to particular components. As one of ordinary skill in the art will appreciate, manufacturers may refer to a component by different names. The present specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments do not limit the present invention, and structural or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

FIG. 1 is a schematic diagram of an optical projection apparatus according to the present invention. The optical projection device is used for optical projection of a sign 1, which sign 1 may be, for example, a logo of an electronic device, such as a display. As shown in fig. 1, the optical projection apparatus includes a light source unit 2 and a projection unit 3, the light source unit 2 is used for projecting light to illuminate the sign 1, and the projection unit 2 is used for projecting the light after illuminating the sign 1. The projection unit 3 is of a solid transparent construction.

In the present embodiment, the projection unit 3 is a triangular prism structure including three adjacent faces, the three side faces are a first face 31, a second face 32 and a third face 33 sequentially, the first face 31 and the second face 32 are sequentially connected to each other, that is, one side of the first face 31 is adjacent to one side of the second face 32, the other side of the first face 31 is adjacent to one side of the third face 33, and the other side of the second face 32 is adjacent to the other side of the third face 33. After light emitted from light source unit 2 illuminates sign 1, light (indicated by the diagonal arrows in fig. 1) enters projection unit 3 from first surface 31 of projection unit 3 and then exits from second surface 32 to form virtual image 11 of sign 1.

In order to satisfy the relative position between sign 1 and virtual image 11, in the embodiment, an included angle a between first surface 31 and second surface 32 is, for example, an acute angle, an included angle B between first surface 31 and third surface 33 is, for example, 60 ° to 120 °, and an included angle C between second surface 32 and third surface 33 is, for example, an acute angle.

Thus, by means of the solid and transparent projection unit 3, the sign 1 can be formed on one side of the other side intersecting with the side where the sign 1 is located (the side corresponding to the sign 1), in this embodiment, the sign 1 is formed on one side of the second side 32 intersecting with the first side 31 where the sign is located from the first side 31 where the sign is located, and the virtual image 11 is only one, so that the problem of ghost image does not exist.

In order to increase the ratio of the virtual image 11 to the signage 1 to be greater than 1, i.e. to enlarge the virtual image 11 of the signage 1, in the present embodiment, as shown in fig. 1, plano-convex lenses are disposed on both the first surface 31 and the third surface 33 of the projection unit 3, and specifically, the plano-convex lenses can be adhered to the projection unit 3 by transparent optical-grade glue. In other embodiments, the projection unit 3 may be directly configured as a convex lens, for example, the projection unit 3 is integrally formed as a combination of a triangular prism and a plano-convex lens.

As shown in fig. 1, the optical projection apparatus of the present invention further includes a projection chamber 21, a first side 31 of the projection unit 3 is disposed opposite to the sign 1, and the light source unit 2 and the sign 1 are disposed on adjacent two sides of the projection chamber 21, respectively, for example, the light source unit 2 is disposed perpendicular to the sign 1.

In the present embodiment, the optical projection apparatus only uses the convex lens design of the projection unit 3, and the virtual image 11 can be enlarged without increasing the space of the projection chamber 21, while ensuring the miniaturization of the electronic apparatus.

In summary, the optical projection apparatus of the present invention can realize the imaging of the sign through the projection unit, and the imaging is unique, the problem of ghost image does not exist, and the optical projection apparatus has good viewing quality; moreover, by arranging the projection unit as a convex lens, the image of the sign can be magnified without increasing the volume of the projection chamber.

The invention also discloses an electronic device, such as a display, comprising the optical projection device, wherein the electronic device is provided with a transparent shell, the transparent shell comprises a projection unit 3, and a user can watch a virtual image 11 from the outside of the transparent shell; in another embodiment, the electronic device includes a transparent housing, the projection unit 3 is located at the transparent housing, and a user can view the virtual image 11 from the outside of the transparent housing; in practical implementation, the transparent housing is a housing of an electronic device (e.g., a display), and the light source unit 2 is disposed inside the electronic device. The electronic device can realize the imaging of the label through the projection unit, has unique imaging, does not have the problem of ghost image, and has good ornamental texture; moreover, by arranging the projection unit as a convex lens, the image of the sign can be magnified without increasing the volume of the projection chamber.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims

1. The utility model provides an optical projection device for the optical projection of sign, its characterized in that, this optical projection device includes light source unit and projection unit, and this projection unit is solid transparent, and this projection unit has crossing first face and second face, and behind this sign was shone to the light that this light source unit throws, this light got into this projection unit back from this first face, and then jets out from this second face to form the only virtual image of this sign.

2. The optical projection device of claim 1, wherein the projection unit is a convex lens structure.

3. The optical projection device of claim 1, wherein the projection unit has a triangular prism configuration.

4. The optical projection apparatus of claim 3, wherein the angle between the first surface and the second surface is acute.

5. The optical projection device of claim 4, wherein the projection unit further has a third surface intersecting both the first surface and the second surface, an included angle between the first surface and the third surface ranges from 60 ° to 120 °, and an included angle between the second surface and the third surface is an acute angle.

6. The optical projection device of claim 5, wherein the first surface and the third surface are each provided with a plano-convex lens.

7. The optical projection device of claim 1, wherein the first side is disposed opposite the sign.

8. The optical projection device according to claim 1, wherein the light source unit is disposed perpendicularly to the sign, the optical projection device further comprising a projection chamber, the light source unit and the sign being disposed on adjacent two sides of the projection chamber, respectively.

9. An electronic device, characterized in that the electronic device comprises an optical projection device according to any one of claims 1 to 8.

10. The optical projection device of claim 9, wherein the electronic device comprises a transparent housing including the projection unit, the virtual image being viewable from outside the transparent housing; or, the electronic device includes a transparent housing, and the projection unit is located at the transparent housing and can view the virtual image from outside the transparent housing.