CN219590608U

CN219590608U - AR wear equipment

Info

Publication number: CN219590608U
Application number: CN202320669727.3U
Authority: CN
Inventors: 赵云; 丁卫涛
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-08-25
Anticipated expiration: 2033-03-28

Abstract

The utility model belongs to the technical field of head-mounted display, and particularly relates to AR head-mounted equipment, which comprises a shell, a main board and a lens which are respectively and fixedly arranged in the shell, a display chip which is arranged corresponding to the lens, a temperature measuring element which is used for measuring the temperature of the display chip, and an adjusting ring which is arranged between the lens and the display chip and is made of SMA metal, wherein the adjusting ring comprises a ring body and at least two contact arms which are arranged on one side surface of the ring body at intervals along the circumferential direction of the ring body, the at least two contact arms and the ring body are respectively and fixedly connected with the lens and the display chip, the temperature measuring element and the adjusting ring are respectively and electrically connected with the main board. The distance between the display chip and the lens can be adjusted by electrifying and heating the adjusting ring, so that the display chip is always positioned at the back focal length of the lens, the definition of the projection image is ensured, and the problem that the definition of the projection image is reduced due to the fact that the distance between the display chip and the lens is easy to change due to temperature change is solved.

Description

AR wear equipment

Technical Field

The utility model belongs to the technical field of head-mounted display, and particularly relates to AR head-mounted equipment.

Background

The basic function of AR head-mounted devices is to project an image for the wearer to view, the projected image being a virtual image focused at 2 meters to infinity. The optical engine is a core component of an imaging system of the AR headset, and mainly comprises a lens and a display chip, wherein the definition of a projected image is determined by the distance between the display chip and the lens, and in general, the display chip is positioned at the back focus of the lens, and can project a clear image to human eyes within a design range, and beyond the design range, the projected image becomes blurred.

At present, after the AR headset is assembled, the distance between the display chip and the lens is fixed, and the display chip is positioned at the back focus of the lens. The heat generated by the display chip during operation is transferred to the shell of the AR headset and the shell of the lens to expand the shell of the AR headset and the shell of the lens, so that the distance between the display chip and the lens is changed, the definition of the projection image observed by human eyes is reduced, and the appearance is seriously influenced.

Disclosure of Invention

The utility model aims to provide an AR headset, which aims to solve the problem that the distance between a display chip and a lens is easy to change due to temperature change, so that the definition of a projection image is reduced.

The utility model discloses AR (augmented reality) head-mounted equipment, which comprises a shell, a main board and a lens which are respectively and fixedly arranged in the shell, a display chip, a temperature measuring element and an adjusting ring, wherein the display chip is arranged corresponding to the lens, the temperature measuring element is used for measuring the temperature of the display chip, the adjusting ring is arranged between the lens and the display chip and is made of SMA (shape memory alloy) metal, the adjusting ring comprises a ring body and at least two contact arms which are arranged on one side surface of the ring body at intervals along the circumferential direction of the ring body, the at least two contact arms and the ring body are respectively and fixedly connected with the lens and the display chip, the temperature measuring element and the adjusting ring are respectively and electrically connected with the main board.

As an improvement, the contact arm comprises a flat plate parallel to the ring body and a connecting plate connected between one end of the flat plate and the ring body.

As an improvement, the inner side and the outer side of the flat plate are both arc-shaped.

As an improvement, the contact arm and the ring body are connected into an integral structure.

As an improvement, an elongated through hole is formed in the ring body at the position corresponding to the contact arm, the connecting plate is inclined, and one end, away from the flat plate, of the connecting plate is fixedly connected with the side edge of the end part of the elongated through hole.

As an improvement, the ring body is fixedly connected with the display chip, and the flat plate of the contact arm is fixedly connected with the lens.

As an improvement, a flexible gasket is fixed between the ring body and the display chip.

As an improvement, the ring body is adhered and fixed with the corresponding side surface of the flexible gasket, and the display chip is adhered and fixed with the corresponding side surface of the flexible gasket.

As an improvement, at least two contact arms are equally arranged along the circumferential direction of the ring body.

Due to the adoption of the technical scheme, the AR headset comprises a shell, a main board and a lens which are respectively and fixedly arranged in the shell, a display chip, a temperature measuring element and an adjusting ring, wherein the display chip is arranged corresponding to the lens, the temperature measuring element is used for measuring the temperature of the display chip, the adjusting ring is arranged between the lens and the display chip and is made of SMA metal, the adjusting ring comprises a ring body, at least two contact arms and at least two contact arms, the contact arms and the ring body are arranged on one side face of the ring body at intervals along the circumferential direction of the ring body, the at least two contact arms and the ring body are respectively and fixedly connected with the lens and the display chip, the temperature measuring element and the adjusting ring are respectively and electrically connected with the main board. When the temperature measuring element works, the temperature measuring element detects the temperature at the display chip and transmits a detection signal to the main board, the main board energizes and heats the adjusting ring according to the detection signal of the temperature measuring element, and as the lens is fixedly arranged in the shell, the display chip is fixedly connected with the lens through the adjusting ring and is not fixedly connected with the shell, when the adjusting ring is energized and heated to a certain temperature, the contact arm contracts towards the direction close to the ring body, and the display chip can be pulled to move towards the direction close to the lens, so that the display chip is positioned at the back focal length of the lens; when the temperature is reduced, the main board electrifies the adjusting ring to heat to another temperature range according to the detection signal of the temperature measuring element, the contact arm stretches out in the direction away from the ring body, and the display chip can be pushed to move in the direction away from the lens, so that the display chip is positioned at the back focal length of the lens; the AR headset provided by the utility model can be used for adjusting the distance between the display chip and the lens by electrifying and heating the adjusting ring, so that the display chip is always positioned at the back focal length of the lens, the definition of the projected image is ensured, and the problem that the definition of the projected image is reduced due to the fact that the distance between the display chip and the lens is easily changed due to temperature change is solved.

Drawings

FIG. 1 is a schematic perspective view of an optical engine of an AR headset of the present utility model;

FIG. 2 is a schematic diagram of the front view of the optical engine of the AR headset of the present utility model;

FIG. 3 is an exploded structural schematic view of an optical engine of the AR headset of the present utility model;

FIG. 4 is a schematic cross-sectional view of the structure of line A-A of FIG. 2;

FIG. 5 is a schematic perspective view of an adjusting ring of the AR headset of the present utility model;

10, a lens; 20. a display chip; 30. an adjusting ring; 31. a ring body; 32. a flat plate; 33. a connecting plate; 34. an elongated through hole; 40. a flexible gasket.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Fig. 1 to 5 are schematic structural views of an AR headset of the present utility model, in which fig. 1 shows a schematic perspective view of the AR headset of the present utility model, fig. 2 shows a schematic front view of the AR headset of the present utility model, fig. 3 shows a schematic exploded structural view of the AR headset of the present utility model, fig. 4 shows a schematic sectional structural view of a line A-A of fig. 2, and fig. 5 shows a schematic perspective view of an adjusting ring of the AR headset of the present utility model. For convenience of description, only the parts related to the present utility model are shown in the drawings.

It should be noted that, if directional indications are referred to in the present utility model, such as up, down, front, back, left, right, etc., the directional indications are merely used to explain the relative positional relationship between the components in a certain specific posture, and if the specific posture is changed, the directional indications are correspondingly changed; if the description of "first", "second", etc. is referred to in this disclosure, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

As can be seen from fig. 1, 2, 3, 4 and 5, the AR headset of the present utility model includes a housing, a main board and a lens 10 respectively and fixedly mounted in the housing, a display chip 20 corresponding to the lens 10, a temperature measuring element for measuring the temperature of the display chip 20, and an adjusting ring 30 made of SMA metal and disposed between the lens 10 and the display chip 20, wherein the adjusting ring 30 includes a ring body 31, at least two contact arms disposed on one side surface of the ring body 31 at intervals along the circumferential direction of the ring body 31, the at least two contact arms and the ring body 31 are respectively and fixedly connected with the lens 10 and the display chip 20, the temperature measuring element, and the adjusting ring 30 are respectively and electrically connected with the main board.

When the temperature measuring element is used for detecting the temperature of the display chip 20 and transmitting a detection signal to the main board, the main board is used for electrifying and heating the adjusting ring 30 according to the detection signal of the temperature measuring element, the lens 10 is fixedly arranged in the shell, the display chip 20 is fixedly connected with the lens 10 and is not fixedly connected with the shell through the adjusting ring 30, the adjusting ring 30 is made of SMA metal, the SMA is shape memory alloys (translated into shape memory alloy) for short, the temperature measuring element has the characteristic of heating and stretching, when the adjusting ring 30 is electrified and heated to a certain temperature, the contact arm is contracted towards the direction close to the ring body 31, the display chip 20 can be pulled to move towards the direction close to the lens 10, and the display chip 20 is positioned at the back focal length of the lens 10; when the temperature is reduced, the main board energizes the adjusting ring 30 to heat to another temperature range according to the detection signal of the temperature measuring element, and the contact arm stretches out in the direction away from the ring body 31, so that the display chip 20 can be pushed to move in the direction away from the lens 10, and the display chip 20 is positioned at the back focal length of the lens 10; the AR headset provided by the utility model can adjust the distance between the display chip 20 and the lens 10 by electrifying and heating the adjusting ring 30, so that the display chip 20 is always positioned at the back focal length of the lens 10, thereby ensuring the definition of the projected image, and solving the problem that the definition of the projected image is reduced due to the fact that the distance between the display chip and the lens is easily changed due to temperature change.

In the present utility model, the contact arm includes a flat plate 32 parallel to the ring 31, and a connection plate 33 connected between one end of the flat plate 32 and the ring 31.

Specifically, the inner side and the outer side of the flat plate 32 are both arc-shaped, so as to be adapted to the cylindrical housing of the lens 10 for fixed connection.

In order to enhance the stability of the movement of the display chip 20, at least two contact arms are equally arranged along the circumferential direction of the ring body 31, and typically, three contact arms are arranged, however, other numbers may be arranged as required.

In other embodiments, the contact arm may be a straight rod extending along the axial direction of the ring body 31.

For the convenience of processing, touch arm and ring body 31 are connected as an organic whole structure, correspond the arm department of touching on ring body 31 and be equipped with elongated through-hole 34, this connecting plate 33 sets up to the slope form to the side department fixed connection of the one end that flat board 32 was kept away from to connecting plate 33 and elongated through-hole 34 tip can increase the removal space of axis direction, and can not cause the axis direction's of adjusting ring 30 size to increase, can effectually reduce AR wear equipment's overall dimension, and processing is convenient moreover, can pass through stamping forming.

In the present utility model, the ring 31 is fixedly connected to the display chip 20, and the flat plate 32 of the contact arm is fixedly connected to the lens 10.

In order to avoid hard collision between the adjustment ring 30 and the display chip 20, a flexible gasket 40 is fixed between the ring body 31 and the display chip 20, and typically, the flexible gasket 40 is made of rubber.

Specifically, the corresponding side surfaces of the ring body 31 and the flexible gasket 40, and the corresponding side surfaces of the display chip 20 and the flexible gasket 40 are fixed by adhesion, and the flat plate 32 of the contact arm and the lens 10 are also fixed by adhesion. In other embodiments, the fixation may also be by screws.

The foregoing description of the embodiments of the utility model is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The AR headset comprises a shell, a main board and a lens which are respectively and fixedly installed in the shell, and is characterized by further comprising a display chip, a temperature measuring element and an adjusting ring, wherein the display chip is arranged corresponding to the position of the lens, the temperature measuring element is used for measuring the temperature of the position of the display chip, the adjusting ring is arranged between the lens and the display chip and is made of SMA metal, the adjusting ring comprises a ring body, at least two contact arms and at least two contact arms, the contact arms are arranged on one side face of the ring body at intervals in the circumferential direction of the ring body, the ring body is respectively and fixedly connected with the lens and the display chip, the temperature measuring element and the adjusting ring are respectively and electrically connected with the main board.

2. The AR headset of claim 1, wherein the contact arm comprises a plate parallel to the ring body, a connection plate connected between one end of the plate and the ring body.

3. The AR headset of claim 2, wherein the inner and outer sides of the flat panel are each provided in an arc shape.

4. The AR headset of claim 2, wherein the contact arm is connected to the ring body as a unitary structure.

5. The AR headset of claim 4, wherein an elongated through hole is provided in the ring body at a position corresponding to the contact arm, the connection plate is provided in an inclined shape, and an end of the connection plate remote from the flat plate is fixedly connected to a side edge of an end of the elongated through hole.

6. The AR headset of any one of claims 2-5, wherein the ring is fixedly connected to the display chip and the flat plate of the contact arm is fixedly connected to the lens.

7. The AR headset of claim 6, wherein a flexible gasket is secured between the ring body and the display chip.

8. The AR headset of claim 7, wherein the ring body is adhesively secured to a corresponding side of the flexible gasket, and the display chip is adhesively secured to a corresponding side of the flexible gasket.

9. The AR headset of claim 1, wherein at least two of the contact arms are equally spaced along the circumference of the ring body.