Pupillary distance measurement method, near-eye display system and computer-readable storage medium

Abstract

The present disclosure relates to the field of optical technology, and provides a pupil distance measurement method, a near-eye display system, and a computer-readable storage medium. The present disclosure sets an aperture stop on an observation lens; sets a field stop on one side of a display screen; and moves at least one of the aperture stop, the observation lens, the field stop, and the display screen, so that a light beam emitted by an image displayed on the display screen enters the human eye through the field stop, the observation lens, and the aperture stop. At the same time, the movement of the aperture stop can also match the observation center of the user's eye with the center of the image. When the user sees the image and the observation center of the user's eye matches the center of the image, the distance between the center of the current aperture stop and the reference point is measured to obtain the user's pupil distance. In this way, when the pupil distance measurement method is applied to the near-eye display field, the user can first measure his or her own pupil distance, and then adjust the pupil distance of the near-eye display system, thereby relieving fatigue and improving user experience.

Description

Technical Field

[0001] The present disclosure relates to the field of optical technology, and more specifically, to a pupil distance measurement method, a near-eye display system, and a computer-readable storage medium. Background Art

[0002] With the development of the times, near-eye display devices are increasingly entering people's lives, but the dizziness and discomfort caused by long-term wearing of the device are one of the problems that hinder its further development. It is currently believed that the cause of this problem is the inconsistency between the pupil distance of the human eye and the optical axis of the eyepiece and the pupil distance of the video source. The current pupil distance measurement is measured using a pupil distance caliper or a pupil distance meter. The pupil distance caliper is mainly used by the operator to determine the pupil distance of the human eye and measure it with a caliper. The pupil distance meter confirms the pupil distance of the human eye by photographing the reflection of the human pupil and reading the number. Both are independent measuring devices, and the pupil distance on the near-eye display device can only be used for adjustment.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] The embodiments of the present disclosure provide a pupil distance measurement method, a near-eye display system, and a computer-readable storage medium, which are intended to solve the technical problem that when a user uses a near-eye display device, fatigue occurs due to the error between the pupil distance of the near-eye display device and the actual pupil distance of the human eye, thereby affecting the user experience.

[0005] To achieve the above purpose, the technical solution adopted by the present disclosure is: to provide a method for measuring pupil distance, which includes:

[0006] Arrange the aperture stop, the observation lens, the field stop and the display screen along the optical axis direction of the observation lens;

[0007] When light emitted by an image displayed on a display screen is observed by a user's single eye through a field stop, an observation lens, and an aperture stop, and the observation center of the user's eye matches the center of the image, the distance between the center of the aperture stop at the current position and a reference point is measured to obtain the user's pupil distance.

[0008] Optionally, the pupil distance measurement method further includes: adjusting the light beam aperture size of the aperture diaphragm, and / or adjusting the imaging range size of the field diaphragm.

[0009] Optionally, the pupil distance measurement method further includes: adjusting the center of the aperture stop, the center of the field stop, and the center of the display screen so that they are located on the optical axis of the observation lens.

[0010] Optionally, the pupil distance measurement method further comprises: synchronously moving the aperture stop, the observation lens, the field stop and the display screen so that the aperture stop corresponds to the position of a single eye of the user.

[0011] Optionally, light emitted by the image displayed on the display screen is observed by a user's single eye through the field diaphragm, the observation lens and the aperture diaphragm, and the observation center of the user's eye matches the center of the image, comprising:

[0012] The left eye of the user observes an image on the display screen through the aperture stop, and the observation center of the left eye of the user matches the center of the image on the display screen observed by the left eye;

[0013] The user's right eye observes the image on the other display screen through the other aperture stop, and the observation center of the user's right eye matches the center of the image on the other display screen that it observes.

[0014] Optionally, measuring the distance between the center of the aperture stop at the current position and a reference point to obtain the pupil distance of the user includes:

[0015] The distance between the current center of one aperture stop corresponding to the left eye of the user and the current center of another aperture stop corresponding to the right eye of the user is measured, and the distance between the current centers of the two aperture stops is determined as the pupil distance of the user.

[0016] Optionally, the field aperture is configured as an electronic aperture and / or a physical aperture.

[0017] The present disclosure also provides a near-eye display system, comprising:

[0018] An observation lens, wherein the observation lens is provided with an aperture stop;

[0019] A display screen, wherein a field stop is provided on a display side of the display screen, and the field stop is located between the observation lens and the display screen;

[0020] A measuring module, wherein the measuring module is configured to measure the distance between the center of the current aperture stop and a reference point to obtain the pupil distance of the user when light emitted by an image displayed on a display screen is observed by a user's single eye through a field stop, an observation lens and an aperture stop, and the observation center of the user's eye matches the center of the image.

[0021] Optionally, the aperture diaphragm includes a plug-in diaphragm with a fixed aperture and / or an adjustable diaphragm with an adjustable aperture.

[0022] The present disclosure also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0023] The beneficial effects of the pupil distance measurement method, near-eye display system and computer-readable storage medium provided by the present disclosure are mainly:

[0024] The present disclosure is mainly applied to the field of myopia display. An aperture stop is arranged on one side of an observation lens to limit the size of light emission, which is beneficial for human eye focusing and avoiding eye movement. A field stop is arranged on one side of a display screen to limit the range of images on the display screen that human eyes can see through the field stop, so that human eyes can only see images within the range limited by the field stop through the aperture stop, and the reflective point of the image presented on the human eye is the location of the visual axis. At least one of the aperture stop, the observation lens, the field stop and the display screen is moved and adjusted, so that the light beam emitted by the image displayed on the display screen enters the human eye through the field stop, the observation lens and the aperture stop, so that the user can see the image. At the same time, the movement of the aperture stop can also make the observation center of the user's eyes match the center of the image. When the user sees the image and the observation center of the user's eyes matches the center of the image, the distance between the center of the current aperture stop and the reference point is measured to obtain the user's pupil distance. In this way, when the pupil distance measurement method is applied to the field of near-eye display, the user can first measure his own pupil distance, and then adjust the pupil distance of the near-eye display system according to his own pupil distance, thereby relieving fatigue and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a flow chart of a pupil distance measurement method provided by an embodiment of the present disclosure;

[0027] Figure 2 is a flow chart of another pupil distance measurement method provided by an embodiment of the present disclosure;

[0028] Figure 3 It is a schematic diagram of the principle structure of measuring pupil distance of a near-eye display system provided by an embodiment of the present disclosure;

[0029] Figure 4 A schematic diagram of a plug-in aperture with a circular light-through hole provided for one embodiment of the present disclosure;

[0030] Figure 5 A schematic diagram of an insert-type aperture with an elliptical light-through hole provided for one embodiment of the present disclosure;

[0031] Figure 6 A schematic diagram of a plug-in aperture with a square light aperture provided for one embodiment of the present disclosure;

[0032] Figure 7 A schematic diagram of an adjustable diaphragm provided for one embodiment of the present disclosure;

[0033] Figure 8 A schematic diagram of measuring pupil distance using a physical aperture provided in one embodiment of the present disclosure;

[0034] Fig. 9 A schematic diagram of measuring pupil distance using an electronic aperture provided in one embodiment of the present disclosure;

[0035] Fig.10 A schematic diagram of an enlarged ruler for measuring pupil distance in a near-eye display system provided in accordance with an embodiment of the present disclosure.

[0036] The reference numerals in the above drawings are as follows:

[0037] 10. Aperture diaphragm; 20. Observation lens; 30. Field diaphragm; 40. Display screen; 50. Scale; 60. Human eye. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In order to illustrate the technical solution disclosed in the present invention, a detailed description is given below in conjunction with specific drawings and embodiments.

[0043] The disclosed embodiment provides a pupil distance measurement method, which is mainly used in the field of near-eye display, such as VR near-eye display system or AR near-eye display system; when applied to VR near-eye display system, when the user quickly obtains his own pupil distance, the pupil distance information of the video source VR image can be adjusted. When the pupil distance information of the video source is consistent with the pupil distance information of the human eye, the dizziness problem caused by long-term wearing of the device can be effectively solved, and the adaptability of VR-related equipment among consumers can be improved. Of course, the pupil distance measurement method is not limited to the field of near-eye display, but can also be applied to other fields.

[0044] See also Figure 1 As shown, the pupil distance measurement method provided by the embodiment of the present disclosure includes:

[0045] Step S101 , arranging the aperture stop 10 , the observation lens 20 , the field stop 30 and the display screen 40 along the optical axis direction of the observation lens.

[0046] Specifically, after the aperture stop 10, the observation lens 20, the field stop 30 and the display screen 40 are arranged in sequence along the optical axis direction of the observation lens 20, the light emitted by the image displayed on the display screen 40 can be incident on the user's eyes through the field stop, the observation lens 20 and the aperture stop 10 in sequence.

[0047] The aperture stop 10 is mainly used to limit the light aperture. The aperture stop 10 is arranged on the observation lens. Exemplarily, the aperture stop 10 is arranged on the eyepiece side of the observation lens 20. The smaller the distance between the aperture stop 10 and the last lens of the eyepiece, the higher the measurement accuracy of the pupil distance. The last lens of the eyepiece refers to the lens that is closest to the user's eyes. Optionally, the minimum distance of the clear aperture defined by the aperture stop 10 in the horizontal direction can be limited to ≤1mm, and the distance of the clear aperture in the vertical direction is greater than the distance in the horizontal direction. The field stop 30 is mainly used to limit the field of view range of the display screen 40. The field stop 30 is arranged on the display side of the display screen 40. The smaller the field of view limited by the field stop 30, the less the pupil distance measurement is affected by the eye point distance, that is, the less the influence of the exit pupil distance is, and the more accurate the pupil distance measurement value is. The aperture stop 10 includes but is not limited to a plug-in stop with a fixed aperture and / or an adjustable stop with an adjustable aperture. Any device that can limit the aperture of light can be used as the aperture stop. Figure 4 , Figure 5 and Figure 6 As shown, a plug-in aperture with a circular light hole, a plug-in aperture with an elliptical light hole, and a plug-in aperture with a square light hole are respectively shown; see Figure 7 , which shows an adjustable aperture with adjustable aperture. The field of view aperture 30 includes but is not limited to an electronic aperture or / and a physical aperture, as long as it can limit the field of view of the display screen 40. Figure 8 , which shows the state when the pupil distance is measured using a physical aperture, and Fig. 9 The figure shows the state when the pupil distance is measured using an electronic aperture.

[0048] It should be noted that, in some other implementation schemes, the aperture stop can also be set on the side of the observation lens farthest from the user's eyes (non-eyepiece side). When this method is used, the observation lens 20, the aperture stop 10, the field stop 30 and the display screen 40 are arranged in sequence along the optical axis direction of the observation lens 20. Alternatively, the aperture stop is set inside the observation lens, that is, the aperture stop is built into the observation lens. When this built-in method is used, an observation lens with an aperture stop can be used. In this case, the observation lens 20, the field stop 30 and the display screen 40 are arranged in sequence along the optical axis direction of the observation lens 20.

[0049] In one embodiment, an aperture stop 10, an observation lens 20, a field stop 30 and a display screen 40 are configured into a measurement group. The pupil distance measurement method uses two measurement groups, and the two eyes of the user observe the images displayed on the corresponding display screens 40 through the aperture stops 10 of the two measurement groups respectively.

[0050] Step S102: When the light emitted by the image displayed on the display screen 40 is observed by the user's single eye through the field diaphragm 30, the observation lens 20 and the aperture diaphragm 10, and the observation center of the user's eye matches the center of the image, the distance between the center of the aperture diaphragm 10 at the current position and the reference point is measured to obtain the user's pupil distance.

[0051] By adjusting the horizontal position of the eyepiece, both eyes of a person can see the image at the same time. At this time, the distance between the center points of the two aperture diaphragms 10 is the pupil distance data of the human eye. The pupil distance of the human eye is measured by using a ruler 50. Both aperture diaphragms 10 have a corresponding relationship with the ruler. The distance between the centers of the two aperture diaphragms 10 is measured to obtain the pupil distance of the human eye 60.

[0052] The aperture stop 10 is arranged on the observation lens near the human eye, and the center of its light-transmitting area is unified with the optical center of the observation lens. The field stop 30 is arranged on one side of the display screen 40 to limit the field of view of the output image so that the output image is only the pattern in the center of the screen. In this way, the field of view of the display screen 40 is limited by the field stop 30, so that the user can only see the image within the range limited by the field stop 30; the light emitted by the image displayed on the display screen 40 is observed by the user's single eye, that is, the user's single eye can see the image; because the aperture stop 10 limits the size of the light output, and cooperates with the field stop 30, the user can only observe the image within the range limited by the field stop 30 from the aperture stop 10, which is conducive to determining the position of the user's pupil, and the pupil is located in the center of the eye. The center of the user's eye is the observation center of the user's eye. It can be considered that the reflection point of the image on the pupil is located on the visual axis of the human eye. When the user adjusts the spatial position of the aperture stop 10, the observation lens 20, the field stop 30 and the display screen 40, the user perceives that the observation center of his or her eye matches the center of the image. That is, the user perceives that the current eye sees the center of the image through the aperture stop 10, that is, the user perceives that the observation center of his or her eye is basically located on the optical axis of the observation lens 20. At this time, the center of the user's pupil is basically coaxial with the center of the aperture stop 10, and the center of the aperture stop 10 and the center of the image are located on the optical axis of the observation lens 20. In this way, the distance between the center of the aperture stop 10 at the current position and the reference point is measured to indirectly obtain the user's pupil distance. The observation center of the user's eye can also be said to be the reaction point of the image on the cornea.

[0053] In one embodiment, when light emitted by an image displayed on a display screen 40 is observed by a user's single eye through the field stop 30, the observation lens 20, and the aperture stop 10 in sequence, and the observation center of the user's eye matches the center of the image, the distance between the center of the aperture stop 10 at the current position and a reference point is measured to obtain the user's pupil distance. The line between the reference point and the center of the aperture stop 10 is parallel to the line between the inner corner points of the user's left eye and the inner corner points of the right eye, the line between the midpoint of the line between the inner corner points of the left eye and the inner corner points of the right eye of the user and the reference point is perpendicular to the line between the reference point and the center of the aperture stop 10, and the reference point is located on the plane where the light-clearing hole of the aperture stop 10 is located; in another embodiment, when the two eyes of the user observe the images displayed on their respective display screens 40 through the aperture stops 10 in the two measurement groups respectively, and the observation centers of the two eyes of the user match the centers of the corresponding images respectively, the distance between the centers of the two aperture stops 10 at the current position can be measured to obtain the user's pupil distance, that is, the distance between the centers of the two aperture stops 10 at the current position is the user's pupil distance; and the center of one of the aperture stops 10 at the current position is used as the reference point.

[0054] In the pupil distance measurement method provided by the embodiment of the present disclosure, an aperture stop 10 is arranged on one side of the observation lens 20 to limit the size of the light output, which is conducive to the focusing of the human eye and avoids the movement of the eyeball; a field stop is arranged on one side of the display screen 40 to limit the range of the image on the display screen 40 that the human eye can see through the field stop 30, so that the human eye can only see the image within the range limited by the field stop 30 through the aperture stop 10, and the reflective point of the image presented on the human eyeball is the location of the visual axis; by moving and adjusting at least one of the aperture stop 10, the observation lens 20, the field stop 30 and the display screen 40, the image displayed on the display screen 40 is displayed. The light beams are sequentially passed through the field diaphragm 30, the observation lens 20 and the aperture diaphragm 10 into the human eye, so that the user can see the image. At the same time, the movement of the light beams can also make the observation center of the user's eye match the center of the image. When the user sees the image and the observation center of the user's eye matches the center of the image, the distance between the center of the current aperture diaphragm 10 and the reference point is measured to obtain the user's pupil distance. In this way, when the pupil distance measurement method is applied to the field of near-eye display, the user can first measure his own pupil distance, and then adjust the pupil distance of the near-eye display system according to his own pupil distance, thereby relieving fatigue and improving user experience. The measurement work selected when measuring the pupil distance can be a common ruler or a digital ruler.

[0055] For ease of understanding, the following describes the pupil distance measurement method in the embodiment of the present disclosure with a specific example. Figure 2 As shown, another embodiment of the pupil distance measurement method in the disclosed embodiment includes:

[0056] Step S201 , arranging the aperture stop 10 , the observation lens 20 , the field stop 30 and the display screen 40 along the optical axis direction of the observation lens 20 .

[0057] The content of step S201 in this embodiment is the same as that in the previous Figure 1 The content of step S101 in the illustrated embodiment is the same and will not be repeated here.

[0058] Step S202, adjust the center of the aperture stop 10, the center of the field stop 30, and the center of the display screen 40 so that they are all located on the optical axis of the observation lens 20. This setting is conducive to indirectly obtaining the pupil distance of the human eye by measuring the distance between the center of the aperture stop 10 and the reference point.

[0059] After the aperture stop 10 is installed on the eyepiece side of the observation lens 20, it is ensured that the center of the aperture stop 10 is coaxial with the center of the observation lens 20, so that the center of the aperture stop 10 is located on the optical axis of the observation lens 20, and the aperture stop 10 and the observation lens 20 remain relatively fixed; and when the field stop 30 is installed on the display side of the display screen 40, it is ensured that the center of the field stop 30 is coaxial with the center of the display screen 40, and the field stop 30 and the display screen 40 remain relatively fixed, and at the same time, the center of the display screen 40 is located on the optical axis of the observation lens 20, so that when the aperture stop 10, the field stop 30, the display screen 40, and the observation lens 20 move synchronously, it is beneficial to ensure the accuracy of measuring the pupil distance of the human eye.

[0060] Step S203, adjusting the beam aperture size of the aperture diaphragm 10, and / or adjusting the imaging range size of the field of view diaphragm 30. By adjusting the aperture aperture size of the aperture diaphragm 10 and adjusting the imaging range size of the field of view diaphragm 30, it is helpful to improve the accuracy of measuring the pupil distance of the human eye. When the aperture diaphragm 10 uses a plug-in diaphragm, a set aperture is selected, and the smaller the aperture, the better. When an adjustable diaphragm is used, the aperture of the adjustable diaphragm is adjusted to the minimum. For the adjustment of the field of view diaphragm, when a physical diaphragm is used, it can be adjusted to the minimum, and when an electronic diaphragm is used first, the electronic diaphragm is on the display screen 40, and it processes the displayed image and only displays the image in a smaller field of view.

[0061] Step S204: The aperture stop 10, the observation lens 20, the field stop 30 and the display screen 40 are moved synchronously, so that the aperture stop 10 corresponds to the position of the user's single eye. The user's left eye observes an image on a display screen 40 through an aperture stop 10, and the observation center of the user's left eye matches the center of the image on the corresponding display screen 40; the user's right eye observes an image on another display screen 40 through another aperture stop 10, and the observation center of the user's right eye matches the center of the image on the corresponding display screen 40.

[0062] When the center of the aperture stop 10, the center of the field stop 30, and the center of the display screen 40 are located together on the optical axis of the observation lens 20, the aperture stop 10, the observation lens 20, the field stop 30, and the display screen 40 are moved synchronously so that the aperture stop 10 corresponds to the position of the user's eyes, that is, the two eyes of the user are adjusted to the positions of the aperture stop 10 of the corresponding measurement group, for example: first close one of the eyes, and adjust the position of the other open eye to the corresponding aperture stop 10. When the user perceives that the observation center of the currently opened eye matches the center of the image on the corresponding display screen 40, the horizontal movement of one measurement group is completed; then open the previously closed eye, close the other eye, and adjust the position of the currently opened eye to the corresponding aperture stop 10. When the user perceives that the observation center of the currently opened eye matches the center of the image on the corresponding display screen 40, the horizontal movement of another measurement group is completed.

[0063] Step S205: measure the distance between the current center of an aperture stop 10 corresponding to the user's left eye and the current center of another aperture stop 10 corresponding to the user's right eye, and determine the distance between the current centers of the two aperture stops 10 as the user's pupil distance. After adjusting the two aperture stops 10 of the two measurement groups, the distance between the centers of the two aperture stops 10 at the current positions is the distance between the two pupils of the user, i.e., the user's pupil distance.

[0064] It should be noted that the order between step S202 and step S203 can be swapped, that is, first adjust the beam aperture size of the aperture diaphragm 10, and / or adjust the imaging range size of the field of view diaphragm 30; and then adjust the center of the aperture diaphragm 10, the center of the field of view diaphragm 30, and the center of the display screen 40 so that they are all located on the optical axis of the observation lens 20.

[0065] In one or more embodiments, the present disclosure further provides a near-eye display system, a VR near-eye display system or an AR near-eye display system, the near-eye display system comprising: an observation lens 20, a display screen 40 and a measuring module; an aperture stop 10 is arranged on the observation lens 20; a field stop 30 is arranged on the display side of the display screen 40, and the field stop 30 is located between the observation lens 20 and the display screen 40; the center of the aperture stop 10, the center of the field stop 30, and the center of the display screen 40 are jointly located on the optical axis of the observation lens 20, and the aperture stop 10, the observation lens 20, the field stop 30, and the display screen 40 can maintain synchronous movement, that is, when the observation lens 20 is adjusted, the aperture stop 10, the field stop 30, and the display screen 40 move together with the observation lens 20, thereby ensuring that the center of the aperture stop 10, the center of the field stop 30, and the center of the display screen 40 are always located on the optical axis of the observation lens 20. The measurement module is configured to measure the distance between the center of the current aperture stop 10 and the reference point to obtain the user's pupil distance when the light emitted by the image displayed on the display screen 40 is observed by the user's single eye through the field of view stop 30, the observation lens 20 and the aperture stop 10 in sequence, and the observation center of the user's eye matches the center of the image.

[0066] In some embodiments, an aperture stop 10 is disposed on the eyepiece side of the observation lens 20 .

[0067] It should be noted that, in some other implementation schemes, the aperture stop may also be disposed on the side of the observation lens farthest from the user's eyes (non-eyepiece side), or the aperture stop may be disposed inside the observation lens.

[0068] In at least one embodiment, the near-eye display system of the present disclosure is used to limit the range of images that the human eye can see at different eye point distances by adding a field stop 30; and at the same time, the aperture stop 10 is used to limit the position of the image that the human eye can see. The aperture stop 10 and the field stop 30 can cooperate well to limit the position of the image that the human eye can see, so as to determine the pupil position of the eyepiece of the near-eye display system. There is a fixed numerical relationship between the ruler and the aperture stop 10, that is, when a person measures the pupil distance through the near-eye display system, the ruler can simultaneously display the value of the human eye pupil distance, thereby achieving the matching of the human eye pupil and the near-eye display system pupil, and determining the human eye pupil distance data by measuring the pupil distance value of the near-eye display system.

[0069] In some embodiments, the aperture diaphragm 10 includes a plug-in diaphragm with a fixed aperture or / and an adjustable diaphragm with an adjustable aperture. The field of view diaphragm 30 includes an electronic diaphragm or / and a physical diaphragm. The measurement module is a ruler, which represents the horizontal distance between the centers of the aperture diaphragms 10 corresponding to the left and right eyes in real time. When the observation centers of the two eyes match the centers of the image respectively, the value displayed by the ruler is the user's pupil distance. The field of view diaphragm 30 is set on the display screen 40, and its main function is to control the size of the field of view to ensure that the human eye can obtain accurate measurement values ​​at different eye point distances. When an electronic diaphragm is used, the center of the electronic diaphragm needs to be consistent with the center of the observation lens 20 and the center of the aperture diaphragm 10; when a physical diaphragm is used, a physical diaphragm is added to the display screen 40. The center of the field of view diaphragm 30 is consistent with the center of the display screen 40, the center of the lens, and the center of the aperture diaphragm 10.

[0070] It should be noted that, in some other embodiments, when the scale is a digital scale, the data of the digital scale is sent to the controller of the near-eye display system, and the controller sends the user's pupil distance data to the voice broadcast device, which performs voice broadcast through the voice broadcast device.

[0071] See also Figure 3 and Fig.10 As shown, the method for measuring pupil distance using the near-eye display system in the embodiment of the present disclosure is as follows:

[0072] Step S301, turn on the near-eye display system, thereby starting the display screen 40 of the near-eye display system. When the near-eye display system is also provided with a diopter adjustment device, diopter adjustment is performed at the same time to ensure that the human eye can see the image clearly.

[0073] Step S302, setting the field aperture 30. When the field aperture 30 uses a physical aperture, the physical aperture is placed in front of the display screen 40. When the field aperture 30 uses an electronic aperture, the electronic aperture can be applied to the display screen 40 through the menu selection of the near-eye display system.

[0074] Step S303, setting the aperture stop 10. When the aperture stop 10 is a plug-in type stop, the plug-in type stop is inserted into a preset slot on the near-eye display system. When the aperture stop 10 is an adjustable stop, the aperture of the adjustable stop is reduced to the minimum.

[0075] Step S304: The user wears the near-eye display system, closes one eye, and adjusts the position of the observation lens 20 corresponding to the open eye so that the eye can see the image and is in the center of human eye observation.

[0076] Step S305: adjust the position of the observation lens 20 corresponding to the other eye so that the eye can see the image and is in the center of human eye observation.

[0077] Step S306: read the value displayed on the ruler to obtain the user's pupil distance.

[0078] The pupil distance measurement method provided in the embodiment of the present disclosure can quickly measure the pupil distance of the human eye on the near-eye display system, and realize the rapid measurement of the pupil distance value. The pupil distance of the eyepiece and the pupil distance of the video source can be set according to the measured pupil distance value of the human eye, so that the human eye, the optical axis of the observation lens 20, the center of the display screen 40, and the center of the video source (i.e., the center of the image) are unified on a straight line, so that the human eye can see the image clearly, and the dizziness caused by long-term wear can be reduced.

[0079] In one or more embodiments, the present disclosure provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the pupil distance measurement method provided in any embodiment are implemented.

[0080] The computer storage medium of the embodiment of the present disclosure may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CDROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device or device.

[0081] Computer readable signal media may include a data signal propagated in baseband or as a carrier wave, wherein the computer readable program code is carried. The data signal propagated in this way may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof.

[0082] Computer-readable signal media may also be any computer-readable media other than computer-readable storage media that can send, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0083] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0084] Computer program code for performing the operation of the disclosed embodiments may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0085] The above descriptions are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for measuring pupil distance, characterized in that: include: Arrange the aperture stop, the observation lens, the field stop and the display screen along the optical axis direction of the observation lens; Adjusting the center of the aperture stop, the center of the field stop, and the center of the display screen so that they are all located on the optical axis of the observation lens; Adjusting the beam aperture size of the aperture diaphragm and adjusting the imaging range size of the field diaphragm, wherein the field diaphragm is used to limit the range of the image seen by the human eye at different eye point distances, so that the pupil distance measurement value can be obtained at different eye point distances; When the light emitted by the image displayed on the display screen is observed by the user's single eye through the field diaphragm, the observation lens and the aperture diaphragm, and the observation center of the user's eye matches the center of the image, the distance between the center of the aperture diaphragm at the current position and the reference point is measured to obtain the user's pupil distance.

2. The pupil distance measurement method according to claim 1, characterized in that: Also includes: The aperture stop, the observation lens, the field stop and the display screen are moved synchronously so that the aperture stop corresponds to the position of the user's single eye.

3. The pupil distance measurement method according to claim 2, characterized in that: The light emitted by the image displayed on the display screen is observed by a user's single eye through the field diaphragm, the observation lens and the aperture diaphragm, and the observation center of the user's eye matches the center of the image, including: The left eye of the user observes an image on the display screen through the aperture stop, and the observation center of the left eye of the user matches the center of the image on the display screen observed by the left eye; The user's right eye observes the image on the other display screen through the other aperture stop, and the observation center of the user's right eye matches the center of the image on the other display screen that it observes.

4. The pupil distance measurement method according to claim 3, characterized in that: The measuring the distance between the center of the aperture stop at the current position and a reference point to obtain the pupil distance of the user comprises: The distance between the current center of one aperture stop corresponding to the left eye of the user and the current center of another aperture stop corresponding to the right eye of the user is measured, and the distance between the current centers of the two aperture stops is determined as the pupil distance of the user.

5. The pupil distance measurement method according to claim 1, characterized in that: The field aperture is configured as an electronic aperture or a physical aperture.

6. A near-eye display system, characterized in that: include: An observation lens, wherein the observation lens is provided with an aperture stop; A display screen, wherein a field stop is provided on a display side of the display screen, the field stop is located between the observation lens and the display screen, the center of the aperture stop, the center of the field stop, and the center of the display screen are all located on the optical axis of the observation lens, and the field stop is used to limit the range of the image seen by the human eye at different eye point distances, so that the pupil distance measurement value can be obtained at different eye point distances; A measuring module, wherein the measuring module is configured to measure the distance between the center of the current aperture stop and a reference point to obtain the pupil distance of the user when light emitted by an image displayed on a display screen is observed by a user's single eye through a field stop, an observation lens and an aperture stop, and the observation center of the user's eye matches the center of the image.

7. The near-eye display system according to claim 6, wherein: The aperture diaphragm includes a plug-in diaphragm with a fixed aperture or an adjustable diaphragm with an adjustable aperture.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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