CN-122018157-A - Display device and wearable display equipment

Abstract

The invention discloses a display device and wearable display equipment, and relates to the technical field of the wearable display equipment, wherein the display device comprises a light emitting component and an optical component, the light emitting component is used for emitting light beams, the optical component comprises a coupling-in part and a coupling-out part, the coupling-in part is positioned on a light emitting path of the light emitting component, a first coupling-out area and a second coupling-out area are respectively arranged on two opposite surfaces of the coupling-out part, and the coupling-in part is used for receiving the light beams emitted by the light emitting component and transmitting the light beams to the coupling-out part so as to emit internal display light beams through the first coupling-out area or emit external display light beams through the second coupling-out area. The technical scheme of the invention can provide the display device with the external display function and the internal display function.

Inventors

• XU CHENXI
• TIAN SHANYU

Assignees

• 青岛歌尔视界科技有限公司

Dates

Publication Date

20260512

Application Date

20241111

Claims (10)

1. 1. A display device, comprising: the light emitting assembly is used for emitting light beams; The optical assembly comprises a coupling-in part and a coupling-out part, wherein the coupling-in part is positioned on an emergent light path of the optical assembly, and a first coupling-out area and a second coupling-out area are respectively arranged on two opposite surfaces of the coupling-out part; The coupling-in part is used for receiving the light beam emitted by the light emitting component and transmitting the light beam to the coupling-out part so as to emit an inner display light beam through the first coupling-out area or emit an outer display light beam through the second coupling-out area.
2. 2. The display device of claim 1, wherein the optical assembly comprises: A substrate; A coupling grating arranged on the substrate for forming the coupling part, and The two coupling-out gratings are respectively arranged on two opposite surfaces of the substrate and are used for respectively forming the first coupling-out area and the second coupling-out area.
3. 3. The display device of claim 2, wherein the coupling-in grating includes a first coupling-in portion for modulating the light beam emitted by the light-emitting component into a first light beam and a second coupling-in portion for modulating the light beam emitted by the light-emitting component into a second light beam; the two coupling-out gratings are respectively configured to emit the first light beam and the second light beam.
4. 4. The display device according to claim 3, wherein the first coupling-in portion and the second coupling-in portion are disposed at a distance from one side surface of the substrate.
5. 5. The display device of claim 4, wherein the light extraction assembly has a first light extraction path toward the first coupling-in portion and a second light extraction path toward the second coupling-in portion, the light extraction assembly being configured to alternately extract light beams along the first light extraction path and the second light extraction path.
6. 6. The display device according to claim 4, wherein two light emitting assemblies are provided, and the two light emitting assemblies are disposed opposite to the first coupling-in portion and the second coupling-in portion, respectively, for emitting light beams to the first coupling-in portion and the second coupling-in portion, respectively.
7. 7. The display device of claim 2, wherein two of the out-coupling gratings are disposed opposite each other along a normal direction of the substrate.
8. 8. The display device according to any one of claims 1 to 7, wherein the internal display light beam is parallel light or the internal display light beam is condensed light, and an exit angle of the internal display light beam ranges from 0 ° to 15 °.
9. 9. The display device according to any one of claims 1 to 7, wherein the external display beam is parallel light or the external display beam is diffuse light, and the outgoing angle of the external display beam is in the range of 0 ° to 35 °.
10. 10. A wearable display apparatus comprising a display device according to any of claims 1 to 9.

Description

Display device and wearable display equipment Technical Field The invention relates to the technical field of wearable display equipment, in particular to a display device and wearable display equipment. Background In the related art, the functions of the wearable display device product are mainly concentrated on in-pair display, and are used for displaying corresponding display information for a user after the user wears the wearable display device product. However, after the user takes down the wearable display device product, the user cannot acquire the related display information when not wearing the wearable display device product because the wearable display device product cannot be displayed externally. Disclosure of Invention The invention mainly aims to provide a display device and wearable display equipment, and aims to provide a display device with an external display function and an internal display function. In order to achieve the above object, a display device according to the present invention includes: the light emitting assembly is used for emitting light beams; The optical assembly comprises a coupling-in part and a coupling-out part, wherein the coupling-in part is positioned on an optical path of the light-out assembly, and a first coupling-out area and a second coupling-out area are respectively arranged on two opposite surfaces of the coupling-out part; The coupling-in part is used for receiving the light beam emitted by the light emitting component and transmitting the light beam to the coupling-out part so as to emit an inner display light beam through the first coupling-out area or emit an outer display light beam through the second coupling-out area. In one embodiment, the optical assembly includes: A substrate; A coupling grating arranged on the substrate for forming the coupling part, and The two coupling-out gratings are respectively arranged on two opposite surfaces of the substrate and are used for respectively forming the first coupling-out area and the second coupling-out area. In an embodiment, the coupling-in grating includes a first coupling-in portion and a second coupling-in portion, where the first coupling-in portion is configured to modulate a light beam emitted by the light emitting component into a first light beam, and the second coupling-in portion is configured to modulate a light beam emitted by the light emitting component into a second light beam; the two coupling-out gratings are respectively configured to emit the first light beam and the second light beam. In an embodiment, the first coupling-in portion and the second coupling-in portion are disposed at a distance from each other on a side surface of the substrate. In an embodiment, the light emitting component has a first light emitting path towards the first coupling-in portion and a second light emitting path towards the second coupling-in portion, and the light emitting component is configured to alternately emit light beams along the first light emitting path and the second light emitting path. In an embodiment, two light emitting assemblies are provided, and the two light emitting assemblies are disposed opposite to the first coupling-in portion and the second coupling-in portion, respectively, and are configured to emit light beams to the first coupling-in portion and the second coupling-in portion, respectively. In an embodiment, the two out-coupling gratings are disposed opposite to each other along a normal direction of the substrate. In one embodiment, the internal display beam is parallel light or the internal display beam is convergent light, and the emergent angle of the internal display beam ranges from 0 degrees to 15 degrees. In one embodiment, the external display beam is parallel light, or the external display beam is diffuse light, and the emergent angle of the external display beam ranges from 0 degrees to 35 degrees. The invention also provides wearable display equipment, which comprises the display device of any one of the above, wherein the display device comprises: the light emitting assembly is used for emitting light beams; The optical assembly comprises a coupling-in part and a coupling-out part, wherein the coupling-in part is positioned on an optical path of the light-out assembly, and a first coupling-out area and a second coupling-out area are respectively arranged on two opposite surfaces of the coupling-out part; The coupling-in part is used for receiving the light beam emitted by the light emitting component and transmitting the light beam to the coupling-out part so as to emit an inner display light beam through the first coupling-out area or emit an outer display light beam through the second coupling-out area. The display device comprises a light emitting component and an optical component, wherein the optical component comprises a coupling-in part and a coupling-out part, and a first coupling-out area and a second coupling-out area are respectively arranged on two op