Wearable display device and adjusting method thereof

Abstract

The invention provides an adjusting method of a wearable display device. The adjusting method comprises the following steps: providing a display light beam to a light-transmitting element for imaging; sensing ambient light intensity to obtain a light intensity signal; and adjusting the brightness of the display light beam and / or the light transmittance of the light-transmitting element according to the light intensity signal. In addition, a wearable display device is also provided. According to the wearable display device and the adjusting method thereof, the good display effect of the wearable display device can be kept, and the experience quality of a user is improved.

Description

Technical Field

[0001] The present invention relates to an electronic device, and more particularly to a wearable display device and an adjustment method thereof. Background Art

[0002] Near Eye Displays (NEDs) and Head-mounted Displays (HMDs) are currently next-generation killer products with great development potential. In the related applications of near-eye display technology, it can currently be divided into Augmented Reality (AR) technology and Virtual Reality (VR) technology. For AR technology, relevant developers are currently working on how to provide the best image quality on the premise of being thin and light. However, in AR display technology, the external brightness has a great impact on the user experience. Specifically, when the image brightness in AR or VR remains unchanged, when the external brightness is high, the pupil of the human eye will shrink to avoid too much light entering the eye, so it is easy to see the image unclearly. When the external brightness is low, the pupil of the human eye will dilate, so the image will be felt too bright. Therefore, establishing a method to reduce the impact of external brightness on the user experience is one of the important topics currently.

[0003] The "Background Art" paragraph is only used to help understand the content of the present invention. Therefore, the content disclosed in the "Background Art" paragraph may include some known technologies that are not known to those skilled in the art of the relevant technical field. The content disclosed in the "Background Art" paragraph does not represent that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those skilled in the art before the filing of the present invention application. Summary of the Invention

[0004] The present invention provides a wearable display device and an adjustment method thereof, which can automatically adjust the light transmittance of a light-transmitting element or the power of a display module to maintain a good display effect of the wearable display device and improve the quality of the user experience.

[0005] Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0006] To achieve one or part or all of the above objects or other objects, the present invention provides an adjustment method for a wearable display device, including the steps of providing a display beam to a light-transmitting element for imaging; sensing the ambient light intensity to obtain a light intensity signal; and adjusting the brightness of the display beam and / or the light transmittance of the light-transmitting element according to the light intensity signal.

[0007] To achieve one or part or all of the above purposes or other purposes, the present invention provides a wearable display device, including a frame body, a light-transmitting element, a display module, an optical sensing module, and a control unit. The light-transmitting element is disposed on the frame body. The display module is disposed on the frame body for providing a display light beam to the light-transmitting element for imaging. The optical sensing module is disposed on one side of the light-transmitting element for sensing the intensity of ambient light penetrating the light-transmitting element to obtain a light intensity signal. The control unit is electrically connected to the display module and the optical sensing module, and the control unit is used for adjusting the brightness of the display light beam according to the light intensity signal.

[0008] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the wearable display device and its adjustment method of the present invention, the optical sensing module is disposed on one side of the light-transmitting element for sensing the intensity of ambient light penetrating the light-transmitting element to obtain a light intensity signal. And the control unit adjusts the brightness of the display light beam and / or the light transmittance of the light-transmitting element according to the light intensity signal. In this way, by automatically adjusting the light transmittance of the light-transmitting element and / or the power of the display module, a good display effect of the wearable display device can be maintained, and the user experience quality can be improved.

[0009] To make the above features and advantages of the present invention more obvious and understandable, specific embodiments are given below and are described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0010] Figure 1 A top view schematic diagram of a wearable display device according to an embodiment of the present invention.

[0011] Figure 2 For the present invention Figure 1 A front view schematic diagram of the wearable display device.

[0012] Figure 3 A front view schematic diagram of a wearable display device according to another embodiment of the present invention.

[0013] Figure 4A And Figure 4B A top view and a side view schematic diagram of a wearable display device according to another embodiment of the present invention respectively.

[0014] Figure 5A And Figure 5B A top view and a side view schematic diagram of a wearable display device according to another embodiment of the present invention respectively.

[0015] Figure 6 A step flow schematic diagram of an adjustment method of a wearable display device according to an embodiment of the present invention.

[0016] Figure 7 For Figure 6 A detailed step flow schematic diagram of an embodiment of the adjustment method.

[0017] Figure 8 is Figure 6 a detailed step - by - step schematic diagram of another embodiment of the adjustment method.

[0018] Explanation of reference numerals:

[0019] 100, 100A - 100C: Wearable display device

[0020] 110: Housing

[0021] 120: Translucent element

[0022] 130: Display module

[0023] 140, 140A - 140B: Optical sensing module

[0024] 142: Light - sensing element

[0025] 144: Light - shielding member

[0026] 146: Light - emitting surface

[0027] 150: Control unit

[0028] 160: Thermal - sensing element

[0029] A1: Imaging area

[0030] A2: Incident light area for sensed light

[0031] L: Ambient light

[0032] S200 - S202, S3021 - S3029, S4021 - S4029: Steps. Detailed implementation manners

[0033] Regarding the foregoing and other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only with reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention.

[0034] Figure 1 is a top - view schematic diagram of a wearable display device according to an embodiment of the present invention. Figure 2 is for the present invention Figure 1 a front - view schematic diagram of the wearable display device. Please refer to Figure 1 and Figure 2。This embodiment provides a wearable display device 100 including a frame body 110, a light-transmitting element 120, a display module 130, an optical sensing module 140, and a control unit 150. The frame body 110 is, for example, a spectacle frame. The display module 130 is disposed in the frame body 110 to provide a display light beam to the light-transmitting element 120 for imaging, so that when a user wears the wearable display device 100, an image can be observed, and combined with the physical objects in the environment to achieve Augmented Reality (AR) or Mixed Reality (MR). The display module 130 includes, for example, a light source element (such as a light-emitting diode, a laser diode, or other light-emitting elements), an image generation element (such as a light valve or a display panel), and a lens element.

[0035] The light-transmitting element 120 is disposed in the frame body 110. The light-transmitting element 120 includes, for example, a photochromic lens or an electrochromic lens. For example, the substance in the photochromic lens changes the light attenuation value of the lens in response to the intensity of the light irradiating the lens, and the electrochromic lens changes the light attenuation value in response to the voltage applied to the electrode of the lens. When the light-transmitting element 120 includes an electrochromic lens, the light attenuation value can be further adjusted electrically (for example, adjusting the light transmittance, that is, the gray scale level, but not limited thereto). For example, when it is necessary to increase the light transmittance, the light attenuation value of the light-transmitting element 120 can be reduced by electrical adjustment to increase the light transmittance. When it is necessary to reduce the light transmittance, the light attenuation value of the light-transmitting element 120 can be increased by electrical adjustment to reduce the light transmittance. The light-transmitting element 120 has an imaging area A1 and a light-sensing light incident area A2. Among them, the display light beam (not shown) from the display module 130 is transmitted to the imaging area A1 for imaging, and the optical sensing module 140 is used to receive the ambient light L penetrating the light-sensing light incident area A2. The imaging area A1 and the light-sensing light incident area A2 do not overlap. In this embodiment, the light-sensing light incident area A2 can be designed to be located on one of the opposite sides in the horizontal direction of the imaging area A1. In other embodiments, the light-sensing light incident area A2 can be designed to be located on one of the opposite sides in the vertical direction of the imaging area A1, as Figure 3 shown in the wearable display device 100A, and the present invention is not limited thereto. Specifically, the light-transmitting element 120 is, for example, a photochromic lens, an electrochromic lens, a combination of a photochromic lens and a light-transmitting lens, or a combination of an electrochromic lens and a light-transmitting lens.

[0036] The optical sensing module 140 is disposed on one side of the light-transmitting element 120 and includes, for example, a light sensing element 142, which is used to sense the intensity of the ambient light L penetrating the light-transmitting element 120 to obtain a light intensity signal L s 。Specifically, the optical sensing module 140 and the display module 130 are disposed on the same side of the light-transmitting element 120.

[0037] The control unit 150 is electrically connected to the display module 130 and the optical sensing module 140. The control unit 150 is, for example, a device including a Central Processing Unit (CPU), a microprocessor, a Digital Signal Processor (DSP), a programmable controller, a Programmable Logic Device (PLD), or other similar devices or a combination of these devices, which is not limited in the present invention. The control unit 150 is configured to adjust the brightness of the display beam (for example, increase or decrease the power of the light source element of the display module 130) according to the light intensity signal L sensed by the optical sensing module 140 s When the light-transmitting element 120 includes an electrochromic lens, the control unit 150 can further electrically control and adjust the light attenuation value of the light-transmitting element 120. In this way, by automatically adjusting the light attenuation value of the light-transmitting element 120 or the power of the display module 130, a good display effect of the wearable display device 100 can be maintained, and the user experience quality can be improved.

[0038] In addition, in this embodiment, the wearable display device 100 further includes a thermal sensing element 160, which is disposed on the housing 110 and electrically connected to the control unit 150 to sense the temperature of the display module 130 to obtain a temperature signal (for example, the temperature of the light source element of the display module 130). The control unit 150 can be configured to determine whether to adjust the brightness of the display beam (for example, increase or decrease the power of the light source element of the display module 130) according to this temperature signal. In this way, the wearable display device 100 can display images at an appropriate temperature without overheating.

[0039] Figure 4A and Figure 4B are respectively the top view and side view schematic diagrams of the wearable display device according to another embodiment of the present invention. Please refer to Figure 4A and Figure 4B . The wearable display device 100B shown in this embodiment is similar to Figure 1 the wearable display device 100 shown. The difference between the two is that, in this embodiment, the optical sensing module 140A further includes a light-shielding member 144, and the light sensing element 142 is disposed in the light-shielding member 144, so that the light-shielding member 144 shields the light sensing element 142 to expose only the side facing the light-transmitting element 120. In this way, stray light can be prevented from entering the optical sensing module 140A, thereby improving the sensing quality of the optical sensing module 140A.

[0040] Figure 5A and Figure 5BSchematic top view and side view diagrams of a wearable display device according to another embodiment of the present invention. Please refer to Figure 5A and Figure 5B . The wearable display device 100C shown in this embodiment is similar to Figure 1 the wearable display device 100 shown. The difference between the two is that in this embodiment, the photosensing element 142 in the optical sensing module 140B has only one light-emitting surface 146, and it faces the side of the light-transmitting element 120. In this way, stray light can be avoided from entering the optical sensing module 140B, thereby improving the sensing quality of the optical sensing module 140B.

[0041] Figure 6 Schematic step flow diagram of an adjustment method for a wearable display device according to an embodiment of the present invention. Please refer to Figure 1 and Figure 6 . The adjustment method provided in this embodiment can be applied at least to Figure 1 the wearable display device 100 shown, so the following takes Figure 1 the embodiment description as an example. In the adjustment method of the wearable display device 100 in this embodiment, first, step S200 is executed to provide a display beam to the light-transmitting element 120 for imaging. Then, step S201 is executed to sense the ambient light intensity to obtain a light intensity signal L s . Specifically, in this embodiment, the optical sensing module 140 receives the ambient light L in the light-sensing light-incident area A2 that penetrates the light-transmitting element 120 to obtain the light intensity signal L s , thereby determining the display effect of the wearable display device 100. Finally, step S202 is executed to adjust the brightness of the display beam and / or the light transmittance of the light-transmitting element 120 according to the light intensity signal L s . Specifically, in this embodiment, the control unit 150 adjusts the brightness of the display beam according to the light intensity signal L s (for example, increasing or decreasing the power of the power supply of the display module 130), or the control unit 150 adjusts the light reduction value of the light-transmitting element 120 according to the light intensity signal L s (for example, the gray scale level, but not limited thereto).

[0042] Figure 7 is Figure 6 a detailed step flow diagram of an embodiment of the adjustment method. Please refer to Figure 1 and Figure 7 . The adjustment method provided in this embodiment can be applied at least to Figure 1 the wearable display device 100 shown, so the following takes Figure 1 the embodiment description as an example. In the embodiment where the light-transmitting element 120 is an electrochromic lens, when executing step S201 to sense the intensity of the ambient light L to obtain the light intensity signal L sAfterwards (e.g., in step S202), first, perform step S3021 to determine whether the light intensity signal L s is within the target range. The target range is, for example, the brightness range acceptable (comfortable) to the human eye, such as 300 nits to 600 nits, but is not limited thereto. In other embodiments, the upper and lower limits of the target range may vary depending on different displays, or may be set by the user themselves. For example, the target range of the light intensity signal L s can be set in advance by the control unit 150, or the target range can be stored in the storage unit of the wearable display device 100. When the light intensity signal is less than or equal to the maximum value of the target range (L t1 ) and greater than or equal to the minimum value of the target range (L t2 ), that is, when L t1 ≧L s ≧L t2 ), then perform step S3022 to maintain the current electrical conditions (such as the power of the display module 130 and / or the light reduction value of the light transmissive element 120) for t seconds. The value of t can be designed according to different embodiments to reduce the judgment frequency and increase the service life of the wearable display device 100. After performing step S3022, step S201 can be repeated after t seconds, but is not limited thereto.

[0043] Continuing from the judgment in step S3021 above, when the light intensity signal L s is not less than or equal to the maximum value L t1 of the target range and greater than or equal to the minimum value L t2 of the target range, that is, when L s >L t1 or L s <L t2 ), then perform step S3023 to determine whether the light intensity signal L s is greater than or equal to the maximum value L t1 of the target range. When the light intensity signal L s is greater than the maximum value L t1 of the target range, that is, when L s >L t1 ), then perform step S3024 to determine whether the light reduction value (C0) of the light transmissive element 120 is equal to the maximum light reduction value C MAX of the light transmissive element 120. Continuing from the judgment in step S3024 above, when the light reduction value of the light transmissive element 120 is equal to the maximum light reduction value of the light transmissive element 120, that is, C0 = C MAX, if the minimum light transmittance of the light-transmitting element 120), then step S3025 is executed to increase the brightness of the display beam (i.e., increase the power of the display module 130), and step S3022 is continuously executed to maintain the current electrical conditions for t seconds for subsequent automatic adjustment. Continuing from the judgment in step S3024 above, when the light reduction value of the light-transmitting element 120 is not equal to (less than) the maximum light reduction value of the light-transmitting element 120 (i.e., C0 < C MAX ), then step S3026 is executed to increase the light reduction value of the light-transmitting element 120 (i.e., increase the gray scale level), and step S3022 is continuously executed to maintain the current electrical conditions for t seconds for subsequent automatic adjustment. It should be noted that the light reduction value C0 is, for example, the current light reduction value of the light-transmitting element 120 when step S201 is executed (i.e., the adjusted light reduction value of the light-transmitting element 120), and is obtained, for example, by using the control unit 150 to read the set value of the light reduction (C0) of the light-transmitting element 120.

[0044] On the other hand, continuing from the judgment in step S3023 above, when the light intensity signal L s is not greater than or equal to the maximum value L of the target range t1 (i.e., L s < L t1 ), then step S3027 is executed to determine whether the light reduction value (C0) of the light-transmitting element 120 is equal to the minimum light reduction value (C min ) of the light-transmitting element 120. When the light reduction value of the light-transmitting element 120 is equal to the minimum light reduction value of the light-transmitting element 120 (i.e., C0 = C min , the maximum light transmittance of the light-transmitting element 120), then step S3028 is executed to reduce the brightness of the display beam (i.e., reduce the power of the display module 130), and step S3022 is continuously executed to maintain the current electrical conditions for t seconds for subsequent automatic adjustment. Continuing from the judgment in step S3027 above, when the light reduction value of the light-transmitting element 120 is not equal to the minimum light reduction value of the light-transmitting element 120 (i.e., C0 > C min ), then step S3029 is executed to reduce the light reduction value of the light-transmitting element 120 (i.e., reduce the gray scale level), and step S3022 is continuously executed to maintain the current electrical conditions for t seconds for subsequent automatic adjustment. In this way, by automatically adjusting the light transmittance of the light-transmitting element 120 or the power of the display module 130, a good display effect of the wearable display device 100 can be maintained, and the user experience quality can be improved. It should be noted that in the methods of adjusting the brightness of the display beam in step S3025 and step S3028, the brightness of the display beam can be adjusted according to a pre-set look-up table (as shown in Table 1 below).

[0045] Table 1

[0046] <![CDATA[Light intensity signal L s (nits)]]> <![CDATA[Power W0 (W) of the display module]]> <![CDATA[L s ≤150]]> 0.4 <![CDATA[150 < L s ≤ 300]]> 0.7 <![CDATA[300 < L s ≤ 600]]> 1.2 <![CDATA[600 < L s ≤ 1200]]> 2 <![CDATA[L s >1200]]> 3

[0047] For example, the target range of the light intensity signal L s is from 300 nits to 600 nits. When the measured light intensity signal L s is 1100 nits and the light-transmitting element 120 is set to the maximum light reduction value, the power W0 (such as the power supply power of the light source element) provided to the display module 130 can be adjusted to 2W according to the look-up table; when the measured light intensity signal L s is 180 nits and the light-transmitting element 120 is set to the minimum light reduction value, the power provided to the display module 130 can be adjusted to 0.7W according to the look-up table.

[0048] Figure 8 is Figure 6 a detailed step flow schematic diagram of another embodiment of the adjustment method. Please refer to Figure 1 and Figure 8 . The adjustment method provided in this embodiment can be applied to at least Figure 1 the wearable display device 100 shown, so the following takes Figure 1 the embodiment description as an example. In the embodiment where the light-transmitting element 120 is a photochromic lens, after performing step S201 to sense the intensity of the ambient light L to obtain the light intensity signal L s (for example, in step S202), first, perform step S4021 to obtain the target brightness applied power (W s ) of the display beam according to the light intensity signal L c . The target brightness applied power W c is, for example, the power applied to the display module 130 (light source element) corresponding to the brightness that the human eye can accept (feel comfortable) at the ambient light L intensity corresponding to the light intensity signal L s , and the target brightness applied power W c can be set by the user himself / herself, for example. For example, a look-up table (see Table 1 above, where the target brightness applied power W s corresponds to the power W0 of the display module) of the power of the display module 130 corresponding to the light intensity signal L c range can be set in advance by the control unit 150. Then, perform step S4022 to determine whether the current applied power W d provided to the display module 130 to generate the current display beam conforms to the target brightness applied power W c . When the current applied power W d conforms to the target brightness applied power W c (for example, W d = W c) Then, step S4023 is executed to maintain the current electrical condition for t seconds. The value of t can be designed according to different embodiments to reduce the judgment frequency and improve the service life of the wearable display device 100. After executing step S4024, step S201 can be repeatedly executed after t seconds to perform subsequent automatic adjustment.

[0049] Following the judgment in the above step S4022, when the currently applied power W d does not meet the target brightness applied power W c , step S4024 is executed to determine whether the currently applied power W d is greater than the target brightness applied power W c . When the currently applied power W d is greater than the target brightness applied power W c (i.e., W d >W c ), step S4025 is executed to reduce the currently applied power W d , and after this step, step S4026 is continued to maintain the current electrical condition for t seconds and step S201 is repeatedly executed after t seconds, but not limited thereto. Following the judgment in the above step S4024, when the currently applied power W d is not greater than or equal to the target brightness applied power W c (i.e., W d <W c ), step S4027 is executed to sense the temperature (T0) of the display module 130 to obtain a temperature signal. Then, after the above step S4027, step S4028 is executed to determine whether the temperature of the temperature signal is greater than or equal to the protection temperature value (T p ) of the display module 130. When the temperature of the display module 130 is not greater than or equal to the protection temperature value of the display module 130 (i.e., T0<T p ), step S4029 is executed to increase the power applied to the display module 130 (the currently applied power W d ), and after this step, step S4026 is continued to maintain the current electrical condition for t seconds and step S201 is repeatedly executed after t seconds, but not limited thereto. Following the judgment in the above step S4028, when the temperature of the display module 130 is greater than or equal to the protection temperature value of the display module 130 (i.e., T0≧T p ), step S4026 is executed to maintain the current electrical condition for t seconds and step S201 is repeatedly executed after t seconds, but not limited thereto. In this way, by automatically adjusting the power of the display module 130, good display effects of the wearable display device 100 can be maintained, the user experience quality can be improved, and at the same time, overheating of the display module 130 caused by increasing the power supply power of the display module 130 can be avoided, thereby improving the safety of the wearable display device 100.

[0050] It is worth mentioning that the steps in the above steps S4027 to S4029 for determining whether to increase the power applied to the display module 130 based on the relative relationship between the temperature of the temperature signal and the protection temperature value of the display module 130 can also be applied to Figure 7 the displayed embodiments. For example, it is performed before Figure 7 the displayed step S3025. First, step S4027 is executed (such as Figure 8 displayed), and the temperature (T0) of the display module 130 is sensed to obtain a temperature signal. Then, after the above step S4027 (such as Figure 8 displayed), step S4028 is executed (such as Figure 8 displayed), and it is determined whether the temperature of the temperature signal is greater than or equal to the protection temperature value (T p ) of the display module 130. When the temperature of the display module 130 is not greater than or equal to the protection temperature value of the display module 130 (i.e., T0 < T p ), then step S3025 is executed to increase the power supply power applied to the display module 130 (i.e., increase the brightness of the display light beam). However, the present invention is not limited thereto. In this way, overheating of the display module 130 can be avoided when increasing the power supply power of the display module 130, thereby improving the safety of the wearable display device 100.

[0051] In summary, the wearable display device and its adjustment method according to the embodiments of the present invention have at least one of the following advantages: In the wearable display device and its adjustment method of the present invention, an optical sensing module is disposed on one side of the light-transmitting element to sense the ambient light intensity penetrating the light-transmitting element to obtain a light intensity signal. And the control unit adjusts the brightness of the display light beam and / or the light transmittance of the light-transmitting element according to the light intensity signal. In this way, by automatically adjusting the light transmittance of the light-transmitting element and / or the power of the display module, a good display effect of the wearable display device can be maintained, and the user experience quality can be improved.

[0052] However, the above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the invention still fall within the scope covered by the patent of the present invention. In addition, any embodiment or claim of the present invention does not have to achieve all the purposes or advantages or features disclosed in the present invention. In addition, the abstract and the title (invention name) are only used to assist in the retrieval of patent documents and are not used to limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limits of the number of elements.

Claims

1. A method for adjusting a wearable display device, characterized in that It includes: Providing a display beam to a light-transmissive element for imaging; Sensing the ambient light intensity to obtain a light intensity signal; And Adjusting the brightness of the display beam and / or the light transmittance of the light-transmissive element according to the light intensity signal.

2. The adjustment method of the wearable display device according to claim 1, wherein The light-transmissive element includes an electrochromic lens, and the method for adjusting the brightness of the display beam and / or the light transmittance of the light-transmissive element according to the light intensity signal further includes: When the light intensity signal is greater than the maximum value of the target range or less than the minimum value of the target range, adjusting the brightness of the display beam or the light reduction value of the light-transmissive element.

3. The adjustment method of the wearable display device according to claim 2, wherein The method for adjusting the brightness of the display beam or the light reduction value of the light-transmissive element when the light intensity signal is greater than the maximum value of the target range or less than the minimum value of the target range further includes: When the light intensity signal is greater than the maximum value of the target range, judging the light reduction value of the light-transmissive element; When the light reduction value of the light-transmissive element is equal to the maximum light reduction value of the light-transmissive element, increasing the brightness of the display beam; and When the light reduction value of the light-transmissive element is less than the maximum light reduction value of the light-transmissive element, increasing the light reduction value of the light-transmissive element.

4. The adjustment method of the wearable display device according to claim 2, characterized in that, The method for adjusting the brightness of the display beam or the light reduction value of the light-transmissive element when the light intensity signal is greater than the maximum value of the target range or less than the minimum value of the target range further includes: When the light intensity signal is less than the maximum value of the target range, judging the light reduction value of the light-transmissive element; When the light reduction value of the light-transmissive element is equal to the minimum light reduction value of the light-transmissive element, decreasing the brightness of the display beam; and When the light reduction value of the light-transmissive element is greater than the minimum light reduction value of the light-transmissive element, decreasing the light reduction value of the light-transmissive element.

5. The adjustment method of the wearable display device according to claim 1, characterized in that, The light-transmissive element includes a photochromic lens, and the method for adjusting the brightness of the display beam and / or the light transmittance of the light-transmissive element according to the light intensity signal further includes: Obtaining a target brightness application power according to the light intensity signal; When the current application power for generating the display beam is greater than the target brightness application power, decreasing the current application power; and When the current application power is less than the target brightness application power, sensing the display module that provides the display beam to obtain a temperature signal, and adjusting the current application power according to the temperature signal.

6. The adjustment method of the wearable display device according to claim 5, wherein The method for sensing the display module to obtain the temperature signal and adjusting the current application power according to the temperature signal when the current application power is less than the target brightness application power further includes: When the temperature signal is less than the protection temperature value of the display module, increasing the current application power.

7. A wearable display device, characterized in that, The wearable display device includes a frame, a light-transmissive element, a display module, an optical sensing module, and a control unit, wherein: The light-transmissive element is disposed on the frame; The display module is disposed on the frame for providing a display beam to the light-transmissive element for imaging; The optical sensing module is disposed on one side of the light-transmissive element for sensing the ambient light intensity penetrating the light-transmissive element to obtain a light intensity signal; and The control unit is electrically connected to the display module and the optical sensing module, and the control unit is configured to adjust the brightness of the display beam according to the light intensity signal.

8. The wearable display device according to claim 7, wherein The light-transmitting element has an imaging area and a light-sensing light incident area. The display beam from the display module is transmitted to the imaging area for imaging. The optical sensing module is configured to receive ambient light that penetrates the light-sensing light incident area, and the imaging area does not overlap with the light-sensing light incident area.

9. The wearable display device according to claim 7, wherein The light-transmitting element includes a photochromic lens.

10. The wearable display device according to claim 9, characterized in that, The wearable display device further includes a thermal sensing element. The thermal sensing element is disposed on the housing and electrically connected to the control unit, and is configured to sense the temperature of the display module to obtain a temperature signal. The control unit is further configured to adjust the brightness of the display beam according to the temperature signal.

11. The wearable display device according to claim 7, wherein, The light-transmitting element includes an electrochromic lens, and the control unit is further configured to adjust the light attenuation value of the light-transmitting element according to the light intensity signal.

12. The wearable display device according to claim 11, wherein The wearable display device further includes a thermal sensing element. The thermal sensing element is disposed on the housing and electrically connected to the control unit, and is configured to sense the temperature of the display module to obtain a temperature signal. The control unit is further configured to adjust the brightness of the display beam according to the temperature signal.

Images