Optical machine and AR glasses

Abstract

The invention relates to an optical machine and AR glasses, the optical machine comprises a lens module, a display source module and a heat dissipation component, the lens module and the display source module are arranged along an optical axis, the heat dissipation component comprises a first heat dissipation component and a second heat dissipation component, the first heat dissipation component sleeves the lens module, and the second heat dissipation component sleeves the display source module. The second heat dissipation component can penetrate through the first heat dissipation component, one part of the second heat dissipation component is attached to the lens module, and the other part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

Description

Technical Field

[0001] The present disclosure relates to augmented reality technology, and more specifically, to an optical machine and AR glasses. Background Art

[0002] In recent years, with the development of augmented reality (AR) technology, AR devices have gradually met people's pursuit of visual experience. When AR devices display virtual information in real scenes, they have high requirements for projection brightness and picture resolution, especially under conditions of sufficient light during the day, which places high requirements on the performance of the optical machine of AR devices.

[0003] The display brightness of the AR device is limited by the optical efficiency of the optical architecture of the optical machine on the one hand, and depends on the brightness of the light source of the optical machine on the other hand. The higher the brightness of the light source, the higher the display brightness of the AR device. As the brightness of the light source increases, the heat generation also increases simultaneously. The increase in heat generation will lead to an increase in temperature. The lens barrel and lens of the optical machine will expand and be stressed due to the increase in temperature. If the fixing device of the lens is deformed by heat, the position of the lens will change slightly. The surface shape of the lens itself will also change as the temperature rises. This will affect the resolution of the displayed image, and then affect the clarity of the displayed image. For example, when the projection screen accounts for a small proportion or the brightness is low, the deviation of the resolution of the optical machine does not change significantly, the thermal defocus is not obvious, and no obvious visual sensory difference will be generated. For another example, as the proportion of the projection screen or the projection brightness value increases, the temperature value inside the optical machine continues to rise, resulting in any of the following imaging resolution effects: clear at low brightness, blurred at high brightness, clear at low ambient temperature, and blurred at high ambient temperature.

[0004] Therefore, it is necessary to provide a technical solution to ensure stable and clear display image resolution when the optical machine provides high display brightness. Summary of the invention

[0005] An object of the present invention is to provide a new technical solution for optical machines.

[0006] According to a first aspect of the present invention, an optical machine is provided, comprising: a lens module, a display source module and a heat dissipation component, wherein the lens module and the display source module are arranged along an optical axis.

[0007] The heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is mounted on the lens module, the second heat dissipation component can pass through the first heat dissipation component, a part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

[0008] Optionally, the first heat dissipation component is a detachable component.

[0009] Optionally, the first heat dissipation component includes a first structural member and a second structural member, wherein the first structural member and the second structural member are hingedly connected, the second heat dissipation component passes through a connection position between the first structural member and the second structural member, and another part of the second heat dissipation component is attached to an outer wall of the first structural member or the second structural member.

[0010] Optionally, the first heat dissipation component is a ring-shaped component.

[0011] Optionally, the material of the first heat dissipation component is magnesium-aluminum alloy, and the material of the second heat dissipation component is graphite sheet.

[0012] Optionally, the optical engine further includes a pump and a heat dissipation pipeline, wherein:

[0013] The display source module includes a display screen and a reinforcement plate, the display screen is fixed on the reinforcement plate, a heat dissipation channel is opened in the reinforcement plate, the heat dissipation channel is externally connected to the heat dissipation pipe, and the pump is used to drive the liquid in the heat dissipation pipe and the liquid in the heat dissipation channel to circulate.

[0014] Optionally, the heat dissipation pipeline includes a first heat dissipation pipeline and a second heat dissipation pipeline, wherein:

[0015] The first heat dissipation pipe is a pipe through which the liquid flowing into the heat dissipation channel passes, and the second heat dissipation pipe is a pipe through which the liquid flowing out of the heat dissipation channel passes. The diameter of the second heat dissipation pipe is larger than the diameter of the heat dissipation channel.

[0016] Optionally, the heat dissipation channels are arranged in a serpentine shape.

[0017] According to a second aspect of the present invention, there is provided an AR glasses, comprising a waveguide assembly, a temple assembly and an optical machine as described in any one of the first aspects, wherein one end of the optical machine is fixedly connected to the waveguide assembly, and the other end of the optical machine is connected to the temple assembly.

[0018] Optionally, the waveguide plate assembly comprises a waveguide plate and a mirror frame, wherein the waveguide plate is arranged in the mirror frame, wherein:

[0019] In the case that the material of the lens frame is a heat-conducting material, the second heat dissipation component extends to the lens frame and is attached to the lens frame.

[0020] In the present invention, a heat dissipation component is arranged in the optical machine, and the heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component, and a part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component, thereby improving the heat dissipation performance of the optical machine, so that the projection display of the optical machine has higher projection brightness and stable picture resolution.

[0021] Features and advantages of the embodiments of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the embodiments of the specification.

[0023] Figure 1 is a schematic structural diagram of an optical machine according to an embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the structure of a heat dissipation component according to an embodiment of the present invention.

[0025] Figure 3 is a schematic structural diagram of an optical machine according to an embodiment of the present invention.

[0026] Figure 4 is a schematic structural diagram of an optical machine according to an embodiment of the present invention.

[0027] Figure 5 FIG. 4 is a schematic diagram of the arrangement of heat dissipation channels according to an embodiment of the present invention.

[0028] Figure 6 is a schematic structural diagram of AR glasses according to an embodiment of the present invention.

[0029] Figure 7 4 is a schematic diagram of the partial structure of AR glasses according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present specification will now be described in detail with reference to the accompanying drawings.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the embodiments of the present specification and its application or uses.

[0032] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] In one embodiment of the present invention, an optical machine is provided. Figure 1 As shown, the optical machine includes: a lens module 110 , a display source module 120 and a heat dissipation component 130 .

[0034] The lens module 110 and the display source module 120 are arranged along the optical axis. The heat dissipation component 130 includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module. The second heat dissipation component can pass through the first heat dissipation component, and a part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

[0035] In an embodiment of the present invention, a heat dissipation component is provided in the optical machine, and the heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component. A part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component, thereby improving the heat dissipation performance of the optical machine, so that the projection display of the optical machine has higher projection brightness and stable picture resolution.

[0036] In some embodiments, the first heat dissipation component is a detachable component. In this way, it can be determined whether to retain the first heat dissipation component and the second heat dissipation component according to the degree of thermal defocus of the optical machine. The degree of thermal defocus of the optical machine is related to the structural design of the optical machine itself, the material of the components and the operating temperature. For example, the degree of thermal defocus in the theoretical state of the optical machine is not obvious, but after being assembled into the whole machine, the degree of thermal defocus changes greatly. The first heat dissipation component and the second heat dissipation component can be set to solve the problem of thermal defocus. For another example, when the working environment of the optical machine is switched to a high temperature environment, the first heat dissipation component and the second heat dissipation component can be set to avoid the problem of thermal defocus.

[0037] In some embodiments, the first heat dissipation component is an annular component. The annular component can be an integral component, which is sleeved on the lens module. The annular component can also include a plurality of structural members, which are fixed by buckles and sleeved on the lens module.

[0038] In some embodiments, the first heat dissipation component includes a first structural member and a second structural member, and the first structural member and the second structural member are hingedly connected. The hinge connection can be achieved by a pin. The second heat dissipation component passes through the connection position of the first structural member and the second structural member, and another part of the second heat dissipation component is attached to the outer wall of the first structural member or the second structural member.

[0039] For example, according to Figure 2As shown, the heat dissipation component 130 includes a first heat dissipation component 131 and a second heat dissipation component 132. The first heat dissipation component 131 includes a first structure 1311, a second structure 1312 and a pin 1313. The first structure 1311 and the second structure 1312 are fixed by the pin 1313. In this way, the first heat dissipation component 131 can be detachable.

[0040] according to Figure 2 As shown, the second heat dissipation component 132 passes through the first heat dissipation component 131 through the connection position of the first structural component 1311 and the second structural component 1312, that is, the setting position of the pin shaft 1313, so that a part of the second heat dissipation component 132 is attached to the lens module 110, and the other part of the second heat dissipation component 132 is attached to the outer wall of the second structural component 1312.

[0041] In some embodiments, the first heat dissipation component is provided with a through hole. The second heat dissipation component can pass through the first heat dissipation component through the through hole, so that a part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component. The size of the through hole is set according to the size of the second heat dissipation component.

[0042] In some embodiments, the material of the first heat dissipation component is magnesium-aluminum alloy, and the material of the second heat dissipation component is graphite sheet.

[0043] The material of the first heat dissipation component is magnesium-aluminum alloy. On the one hand, magnesium-aluminum alloy is light in weight, so that the first heat dissipation component does not add much extra weight. On the other hand, magnesium-aluminum alloy has good thermal conductivity, which is conducive to heat dissipation. The first heat dissipation component can also be made of other materials with light weight and good thermal conductivity, such as copper.

[0044] The material of the second heat dissipation component is a graphite sheet. The graphite sheet is a composite material with a planar thermal conductivity of more than 1000W / mK, which can quickly achieve cooling without significantly increasing the temperature. In addition, the graphite sheet is light in weight, so that the second heat dissipation component does not add much extra weight, and can also be flexibly folded according to the spatial position, increasing the flexibility of the design.

[0045] In some embodiments, according to Figure 3 As shown, the optical machine also includes a pump 140 and a heat dissipation pipe 150. The display source module 120 includes a display screen 121 and a reinforcement plate 122. The display screen 121 is fixed on the reinforcement plate 122. A heat dissipation channel ( Figure 3 The heat dissipation channel is externally connected to the heat dissipation pipe 150. The pump 140 is used to drive the liquid in the heat dissipation pipe and the liquid in the heat dissipation channel to circulate.

[0046] In this embodiment, a pump is used to circulate the liquid so that the liquid can directly take away the heat when flowing through the heat dissipation pipe and the heat dissipation channel, thereby achieving the purpose of efficient cooling and improving the heat dissipation performance.

[0047] The heat dissipation channel opened in the reinforcement plate 122 is etched into a micro-scale channel by anisotropic etching.

[0048] In some embodiments, the display screen 121 can be an LCD (Liquid Crystal Display) display screen, an OLED (Organic Light-Emitting Diode) display screen, a QLED (Quantum Dot LightEmitting Diode) display screen, or a Mini-LED or Micro-LED display screen to provide the required virtual digital image.

[0049] according to Figure 4 As shown, the display screen 121 is an LED screen and includes a silicon substrate 1211 , a black plastic 1222 , and a FPC (Flexible Printed Circuit) 1223 .

[0050] In some embodiments, according to Figure 5 As shown, the heat dissipation channels are arranged in a serpentine shape. The heat dissipation channels can also be arranged in any of the following arrangements: grid type, radial type.

[0051] In some embodiments, according to Figure 3 As shown, the heat dissipation pipe 150 includes a first heat dissipation pipe 151 and a second heat dissipation pipe 152. The first heat dissipation pipe 151 is a pipe through which the liquid flowing into the heat dissipation channel passes, and the second heat dissipation pipe 152 is a pipe through which the liquid flowing out of the heat dissipation channel passes. The diameter of the second heat dissipation pipe 152 is larger than the diameter of the heat dissipation channel, so that the speed at which the liquid flows through the heat dissipation channel is greater than the speed at which the liquid flows through the second heat dissipation pipe, which is beneficial to the heat dissipation of the liquid when flowing through the second heat dissipation pipe, reduces the temperature of the liquid flowing into the pump from the second heat dissipation pipe, and improves the heat dissipation performance.

[0052] In some embodiments, the diameter of the first heat dissipation pipe is the same as the diameter of the heat dissipation channel.

[0053] In one embodiment of the present invention, an AR glasses is provided. Figure 6 As shown, the AR glasses include a waveguide assembly 610, a temple assembly 620, and an optical engine 630 provided in any of the above embodiments. One end of the optical engine 630 is fixedly connected to the waveguide assembly 610, and the other end of the optical engine 630 is connected to the temple assembly 620.

[0054] In this embodiment, the optical engine 630 includes not only a lens module, a display source module and a heat dissipation component, but also a housing. Figure 6 . The material of the optical machine housing may be plastic. In the present embodiment, the first heat dissipation component is a detachable component. In this way, it can be determined whether to retain the first heat dissipation component and the second heat dissipation component according to the degree of thermal defocus of the optical machine. The degree of thermal defocus of the optical machine is related to the structural design of the optical machine itself, the materials of the components and the operating temperature. For example, the degree of thermal defocus of the optical machine in the theoretical state is not obvious, but after being assembled into the whole machine, the degree of thermal defocus changes greatly. The first heat dissipation component and the second heat dissipation component may be set to solve the problem of thermal defocus. For another example, when the working environment of the optical machine is switched to a high temperature environment, the first heat dissipation component and the second heat dissipation component may be set to avoid the problem of thermal defocus.

[0055] according to Figure 6 As shown, the waveguide plate assembly 610 includes a waveguide plate 611 and a mirror frame 612. The waveguide plate 611 is disposed in the mirror frame 612. The mirror frame 612 may be made of a plastic material or a heat-conducting material, such as a magnesium-aluminum alloy.

[0056] In some embodiments, when the material of the frame is a heat-conducting material, the second heat dissipation component extends to the frame and is attached to the frame. This allows for faster heat dissipation. The heat-conducting material may be a magnesium-aluminum material.

[0057] For example, Figure 7 The optical machine shown includes a lens module 110, a display source module 120 and a heat dissipation component 130. The lens module 110 and the display source module 120 are arranged along the optical axis. The heat dissipation component 130 includes a first heat dissipation component 131 and a second heat dissipation component 132'. The first heat dissipation component 131 is sleeved on the lens module 110. The second heat dissipation component 132' can pass through the first heat dissipation component 131, and a part of the second heat dissipation component 132' is attached to the lens module 110, and another part of the second heat dissipation component 132' is attached to the outer wall of the first heat dissipation component 131. Figure 7 The waveguide plate assembly 610 shown includes a mirror frame 612, and the material of the mirror frame 612 is magnesium aluminum. Figure 7 As shown, the second heat dissipation component 132 ′ extends to the lens frame and is attached to the lens frame 612 , which can achieve faster heat dissipation.

[0058] In some embodiments, the temple assembly 620 may be made of plastic or metal.

[0059] The AR glasses provided by an embodiment of the present invention have a heat dissipation component arranged in an optical machine of the AR glasses, wherein the heat dissipation component includes a first heat dissipation component and a second heat dissipation component, wherein the first heat dissipation component is sleeved on a lens module, the second heat dissipation component can pass through the first heat dissipation component, and a portion of the second heat dissipation component is attached to the lens module, and another portion of the second heat dissipation component is attached to an outer wall of the first heat dissipation component, thereby improving the heat dissipation performance of the optical machine, so that the projection display of the optical machine has higher projection brightness and stable picture resolution, thereby improving the display quality of the AR glasses.

[0060] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0061] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0062] The embodiments of the present specification have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An optical machine, characterized in that: include: Lens module, display source module and heat dissipation components, The lens module and the display source module are arranged along the optical axis. The heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is mounted on the lens module, the second heat dissipation component can pass through the first heat dissipation component, a part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

2. The optical machine according to claim 1, characterized in that: The first heat dissipation component is a detachable component.

3. The optical machine according to claim 1, characterized in that: The first heat dissipation component includes a first structural member and a second structural member, wherein the first structural member and the second structural member are hingedly connected, the second heat dissipation component passes through a connection position between the first structural member and the second structural member, and another part of the second heat dissipation component is attached to an outer wall of the first structural member or the second structural member.

4. The optical machine according to claim 1, characterized in that: The first heat dissipation component is a ring-shaped component.

5. The optical machine according to claim 1, characterized in that: The material of the first heat dissipation component is magnesium-aluminum alloy, and the material of the second heat dissipation component is graphite sheet.

6. The optical machine according to any one of claims 1 to 5, characterized in that: The optical engine also includes a pump and a heat dissipation pipeline, wherein: The display source module includes a display screen and a reinforcement plate, the display screen is fixed on the reinforcement plate, a heat dissipation channel is opened in the reinforcement plate, the heat dissipation channel is externally connected to the heat dissipation pipe, and the pump is used to drive the liquid in the heat dissipation pipe and the liquid in the heat dissipation channel to circulate.

7. The optical machine according to claim 6, characterized in that: The heat dissipation pipeline includes a first heat dissipation pipeline and a second heat dissipation pipeline, wherein: The first heat dissipation pipe is a pipe through which the liquid flowing into the heat dissipation channel passes, and the second heat dissipation pipe is a pipe through which the liquid flowing out of the heat dissipation channel passes. The diameter of the second heat dissipation pipe is larger than the diameter of the heat dissipation channel.

8. The optical machine according to claim 7, characterized in that: The heat dissipation channels are arranged in a serpentine shape.

9. An AR glasses, characterized in that: It comprises a waveguide assembly, a temple assembly and an optical machine as described in any one of claims 1 to 8, wherein one end of the optical machine is fixedly connected to the waveguide assembly, and the other end of the optical machine is connected to the temple assembly.

10. The AR glasses according to claim 9, characterized in that: The waveguide plate assembly comprises a waveguide plate and a mirror frame, wherein the waveguide plate is arranged in the mirror frame, wherein: In the case that the material of the lens frame is a heat-conducting material, the second heat dissipation component extends to the lens frame and is attached to the lens frame.

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