WO2018126528A1

WO2018126528A1 - Head-mounted display device

Info

Publication number: WO2018126528A1
Application number: PCT/CN2017/075775
Authority: WO
Inventors: 李勤生
Original assignee: 深圳市俊硕创新科技有限公司
Priority date: 2017-01-06
Filing date: 2017-03-06
Publication date: 2018-07-12
Also published as: CN206400194U

Abstract

Disclosed is a head-mounted display device, comprising: a wearing component (1) comprising a housing (11); and a display component (2) arranged in the housing. The display component comprises a display screen (21) and an imaging lens (22), arranged at a certain included angle. A reflector (23) for changing the direction of light ray transmission is arranged between the display screen and the imaging lens. A light ray of an image displayed by the display screen enters the imaging lens at a specific angle after being reflected by the reflector, and finally forms an enlarged image after being refracted by the imaging lens, wherein the specific angle refers to an included angle between a light ray entering the imaging lens, and the imaging lens. The head-mounted display device has a simple structure and relatively small volume, is convenient to carry, and can improve the user experience.

Description

Head-mounted display device

The present invention relates to a head mounted display device.

Background technique

[0002] The existing head-mounted display device, because of the focal length of the Fresnel lens, wants to obtain a clear image, which can only be achieved by sacrificing the volume of the head-mounted display device, thereby causing the head-mounted display device to be bulky and shaped. Bloated problem.

technical problem

The present invention provides a head-mounted display device that solves the above technical problems, has a simple structure, is small in size, is convenient to carry, and can improve user experience.

Problem solution

Technical solution

[0004] In order to solve the above technical problem, the present invention provides a head mounted display device, including: a wearing part including a housing; and a display part disposed in the housing; the display part includes a certain angle a display screen and an imaging lens, and a mirror for changing a light transmission direction is disposed between the display screen and the imaging lens, and a light of an image displayed by the display screen is incident at a specific angle after being reflected by the mirror An enlarged image is formed to the imaging lens and finally refracted by the imaging lens, wherein the specific angle refers to an angle between a light incident to the imaging lens and the imaging lens.

Further, the specific angle ranges from 88° to 92°.

Further, the specific angle is 90°.

Further, the transmission distance of the light between the display screen and the imaging lens is between one and two times the focal length of the imaging lens.

Further, the imaging lens is a Fresnel lens.

[0009] Further, two or more of the mirrors are disposed between the display screen and the imaging lens, and the light of the image displayed by the display screen passes through the mirror for more than two reflections. Rear normal incidence To the imaging lens.

[0010] Further, the display screen is obliquely disposed, wherein a position of the display screen adjacent to one end of the imaging lens is higher than a position away from an end of the imaging lens.

[0011] Further, the tilt angle of the display screen with respect to the horizontal plane is between 0° and 15°.

[0012] Further, the tilt angle of the display screen relative to the horizontal plane is between 5° and 10°.

[0013] Further, a wireless receiving module for receiving an external image signal is disposed in the housing, and the wireless receiving module is electrically connected to the display screen.

[0014] Further, a rechargeable power module is disposed in the housing, and the rechargeable power module is electrically connected to the display screen and the wireless receiving module respectively to provide power for both.

[0015] Further, the head mounted display device is an FPV display device.

[0016] Further, the head mounted display device is a VR display device.

[0017] Further, the head mounted display device is an AR display device.

Advantageous effects of the invention

Beneficial effect

[0018] by providing a display screen and an imaging lens in the housing, and by providing at least one mirror between the display screen and the imaging lens, and causing the light of the image displayed by the display screen to be reflected by the mirror to be substantially imaged The lens is incident on the imaging lens in a vertical direction and is refracted to form an enlarged image. The arrangement of the mirror enables the optical path to be extended in a narrow space, which can reduce the volume of the head mounted display device, and has a simple and ingenious structure. User experience and portability. Brief description of the drawing

DRAWINGS

1 is a schematic structural view of a head mounted display device according to an embodiment of the present invention.

2 is a schematic view showing an optical path of a display member in the head mounted display device shown in FIG. 1.

3 is a view showing a state of use of the wearable head mounted display device shown in FIG. 1.

BEST MODE FOR CARRYING OUT THE INVENTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. [0023] Referring to FIG. 1 to FIG. 3, the present invention provides a head mounted display device comprising: a wearing part 1 and a display part 2.

[0024] The wearing part 1 includes a housing 11 and an eye cover 12 mounted on the housing 11 at a window, and the eye cover 12 can be made of a cushioning material such as sponge or foam to make the user comfortable to wear. The housing 11 is further provided with an annular fixing band 13 and a top fixing band 14 to wear the wearing part 1 to the user's head 200.

[0025] The display member 2 is mounted inside the casing 11. The display 21 can usually select a high-definition display 21, and the size of the display 21 can be selected as a 5-inch size.

Specifically, the display unit 2 includes a display screen 21 and an imaging lens 22. The display screen 21 and the imaging lens 22 are disposed at an angle, and the two should be arranged in parallel, wherein the position of the imaging lens 22 is substantially at the window on the casing 11.

Further, the display unit 2 further includes a mirror 23 . The mirror 23 is disposed between the display screen 21 and the imaging lens 22 for changing the transmission direction of the light of the image displayed by the display screen 21 so that the light emitted from the display screen 21 can reach the imaging lens 22. Specifically, the light of the image displayed on the display screen 21 is reflected by the mirror 23, incident on the imaging lens 22 at a specific angle, and finally refracted by the imaging lens 22 to form an enlarged image for viewing by the user. The specific angle refers to an angle between the light finally incident on the imaging lens 22 and the imaging lens 22, and the specific angle ranges from 88° to 92°, such as 88°, 89°, 90°, 91°, 92°, and The angle between any two values. Preferably, the specific angle is 90°, i.e., the light is finally incident perpendicularly to the imaging lens 22 after being reflected by the mirror 23.

[0028] wherein, in order to obtain a larger multiple of the image (real image) than the image displayed by the display screen 21, the total transmission distance of the light between the display screen 21 and the imaging lens 22 should generally be between the focal length of the imaging lens 22. Between one and two times to achieve the function of zooming in and realizing.

[0029] In the above embodiment, the imaging lens 22 may be a Fresnel lens or a convex lens, preferably a Fresnel lens.

[0030] In other embodiments, the number of the mirrors 23 disposed between the display screen 21 and the imaging lens 22 may be two or more, so that the light of the image displayed by the display screen 21 passes between the mirrors 23 More than one or more reflections are incident perpendicularly to the imaging lens 22, and finally refracted by the imaging lens 22 to form an enlarged image for viewing by the user.

[0031] In a preferred embodiment, the display screen 21 is in an inclined setting state, and preferably, the display screen 21 is adjacent to the imaging screen. One end of the mirror 22 is positioned higher than its position away from the end of the imaging lens 22. For example, the inclination angle of the display screen 21 with respect to the horizontal plane is between 0° and 15°, such as 0°, 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°10°, 11°, 12°, 13°, 14°, 15° and values between any two values. Preferably, it may be between 5 and 10 degrees, such as 10 degrees. By setting the display screen 21 obliquely, it is possible to prevent the image displayed on the display screen 21 from being directly viewed by the user, affecting the viewing effect.

[0032] A wireless receiving module (not shown) for receiving an external image signal is disposed in the housing 11, and the wireless receiving module is electrically connected to the display screen 21. The wireless receiving module includes an antenna 3 extending outside the casing 11 and a control circuit board (not shown) disposed in the casing 11 and electrically connected to the antenna 3. The control circuit board is electrically connected to the display screen 21.

In an embodiment, a rechargeable power module (not shown) may be disposed in the housing 11, and the rechargeable power module is electrically connected to the display module 21 and the wireless receiving module, respectively, to provide power for both.

[0034] In the above embodiment, the head mounted display device is an FPV (First Person View) display device.

[0035] In the above embodiment, the head mounted display device may also be a VR (Virtual Reality) display device or an AR (Augmented Reality) display device.

[0036] The head-mounted display device of the present invention has the following beneficial effects:

[0037] By providing the display screen 21 and the imaging lens 22 in the casing 11, and by providing at least one mirror 23 between the display screen 21 and the imaging lens 22, the light of the image displayed on the display screen 21 is reflected. The reflection of the mirror 23 is incident on the imaging lens 22 in a direction substantially perpendicular to the imaging lens 22 and is refracted to form an enlarged image. The arrangement of the mirror 23 allows the optical path to be extended in a narrow space, and the head-mounted display can be reduced. The size of the device is simple and ingenious, which improves user experience and portability.

The above are only the embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

Claim

A head mounted display device, comprising:

Wearing parts, including a housing;

And a display member disposed in the housing;

The display component includes a display screen and an imaging lens disposed at an angle, and a mirror for changing a light transmission direction is disposed between the display screen and the imaging lens, and the light of the image displayed by the display screen passes The reflected mirror is incident on the imaging lens at a specific angle and finally refracted by the imaging lens to form an enlarged image, wherein the specific angle refers to light incident on the imaging lens and the imaging lens The angle between.

A head mounted display device according to claim 1, wherein:

The specific angle ranges from 88 to 92.

A head mounted display device according to claim 2, wherein:

The specific angle is 90.

A head mounted display device according to claim 1, wherein:

The transmission distance of light between the display screen and the imaging lens is between one and two times the focal length of the imaging lens.

A head mounted display device according to claim 1, wherein:

The imaging lens is a Fresnel lens.

A head mounted display device according to claim 1, wherein:

Two or more of the mirrors are disposed between the display screen and the imaging lens, and the light of the image displayed by the display screen is normally incident on the mirror after being reflected by the mirror twice or more Imaging lens.

A head mounted display device according to claim 1, wherein:

The display screen is obliquely disposed, wherein a position of the display screen adjacent to one end of the imaging lens is higher than a position away from an end of the imaging lens.

A head mounted display device according to claim 7, wherein:

The angle of inclination of the display screen relative to the horizontal plane is between 0 and 15. [Claim 9] The head mounted display device according to claim 1, wherein:

The angle of inclination of the display screen with respect to the horizontal plane is between 5 and 10.

[Claim 10] The head mounted display device according to claim 1, wherein:

A wireless receiving module for receiving an external image signal is disposed in the housing, and the wireless receiving module is electrically connected to the display screen.

[Claim 11] The head mounted display device according to claim 10, wherein:

A rechargeable power module is disposed in the housing, and the rechargeable power module is electrically connected to the display screen and the wireless receiving module respectively to provide power for the two. 11. The head mounted display device of claim 10, wherein:

A rechargeable power module is disposed in the housing, and the rechargeable power module is electrically connected to the display screen and the wireless receiving module respectively to provide power for the two.

[Claim 12] The head mounted display device according to any one of claims 1 to 11, characterized in that:

The head mounted display device is an FPV display device.

[Claim 13] The head mounted display device according to any one of claims 1 to 11, characterized in that:

The head mounted display device is a VR display device.

[Claim 14] The head mounted display device according to any one of claims 1 to 11, characterized in that:

The head mounted display device is an AR display device.