CN109827524B - Light angle measuring device and light angle measuring method for light emitted by display screen - Google Patents
Light angle measuring device and light angle measuring method for light emitted by display screen Download PDFInfo
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- CN109827524B CN109827524B CN201910222995.9A CN201910222995A CN109827524B CN 109827524 B CN109827524 B CN 109827524B CN 201910222995 A CN201910222995 A CN 201910222995A CN 109827524 B CN109827524 B CN 109827524B
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Abstract
The invention relates to a light angle measuring device, which is used for measuring the angle of emergent light of a display screen, wherein the display screen is used for displaying a target image, and the device comprises: the lens is used for converging the light rays emitted by the display screen to a preset point; a spectrometer including an eyepiece rotatable on a plane perpendicular to the display screen with a preset point as a rotation center, for observing a target image to obtain a first angle of view of light emitted from a first position of the display screen; an angle ruler comprising a first arm and a second arm; a light emitting unit for emitting a linear beam parallel to a length direction of the second arm; and the control structure is used for enabling the rotation center of the second arm to be located at a preset position corresponding to the first position and controlling the eyepiece to rotate to a position where a first visual angle can be obtained, and rotating the second arm to enable the linear light beam emitted by the light-emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the light at the first position. The invention also relates to a method for measuring the light angle of the light emitted by the display screen.
Description
Technical Field
The invention relates to the technical field of display product manufacturing, in particular to a light angle measuring device and a light angle measuring method for light emitted by a display screen.
Background
Virtual Reality (VR) technology is a computer simulation system that can create and experience a Virtual world, which uses a computer to create a simulated environment, which is a systematic simulation of interactive three-dimensional dynamic views and physical behaviors with multi-source information fusion, and immerses users in the environment. The light that the screen was launched in the VR demonstration only gets into pupil formation of image with the light that lens light path angle matches, can utilize this characteristic that the VR shows to carry out the pertinence optical design to promote the utilization of light energy, this requirement can measure the light angle that screen different positions department and lens light path match, so that carry out corresponding optical design.
Disclosure of Invention
In order to solve the technical problem, the invention provides a light angle measuring device and a light angle measuring method for light emitted by a display screen, which can measure light angles matched with light paths of lenses at different positions of the screen.
In order to achieve the purpose, the invention adopts the technical scheme that: a light angle measuring device for measuring the angle of the outgoing light of a display screen for displaying a target image, comprising:
the lens is arranged on the light emitting side of the display screen, the optical axis of the lens is perpendicular to the display screen, and the lens is used for converging the light emitted by the display screen to a preset point;
a spectrometer, including an eyepiece capable of rotating on a plane perpendicular to the display screen with the preset point as a rotation center, for observing the target image to obtain a first field angle of light emitted from a first position of the display screen;
the angle ruler comprises a first arm and a second arm, wherein the first arm can be vertically arranged with the display screen, and the second arm can rotate around the first arm;
the light-emitting unit is fixedly arranged on the second arm and used for emitting linear light beams parallel to the length direction of the second arm;
the control structure is used for controlling the angle ruler to move along a first direction parallel to the display screen, enabling the rotation center of the second arm to be located at a preset position corresponding to the first position, and controlling the eyepiece to rotate to a position where the first angle of view can be obtained, and rotating the second arm to enable the linear light beam emitted by the light-emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the light at the first position;
wherein a distance between the preset position and the lens is the same as a distance between the first position and the lens.
Optionally, the light emitting unit includes a laser.
Optionally, the control structure includes:
the translation table is positioned on one side of the display screen and used for fixing the angle ruler;
and the translation unit is used for controlling the angle ruler to move in the first direction.
Optionally, the control structure further includes a rotation unit that controls rotation of the second arm.
Optionally, the target image is a plurality of white straight lines arranged at intervals under a black background, the plurality of white straight lines are symmetrically arranged by taking a first straight line as a central axis, the first straight line is located at the center of the display screen, the orthographic projection of the optical axis of the lens on the display screen is located on the first straight line, the first direction is perpendicular to the white straight line, and the first position is any position where the central point of the white straight line is located.
Optionally, the display device further comprises a control unit for controlling the display screen to rotate on the plane where the display screen is located, so as to obtain the light-emitting angle of the light emitted from the position on the display screen except the central point of the white straight line.
Optionally, the lens is an aspheric convex lens.
The invention also provides a light angle measuring method for the light emitted by the display screen, which adopts the light angle measuring device to measure and comprises the following steps:
when the target image is displayed on the display screen, observing the target image through an eyepiece of the spectrometer to obtain a first field angle corresponding to light emitted from a first position of the display screen;
the emergent angle of the light at the first position is obtained, the angle ruler is controlled to move along a first direction parallel to the display screen, the rotating center of a second arm of the angle ruler is located at a preset position corresponding to the first position, the eyepiece is controlled to rotate to a position where the first visual angle can be obtained, and the second arm is rotated to enable a linear light beam emitted by the light emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the light at the first position.
Optionally, the target image is a plurality of white straight lines arranged at intervals under a black background, the plurality of white straight lines are symmetrically arranged with a first straight line as a center, the first straight line is located at the center of the display screen, an orthographic projection of an optical axis of the lens on the display screen is located on the first straight line, the first direction is perpendicular to the white straight line,
observe the target image through the eyepiece of spectrometer in order to obtain the first angle of view that the light that the first position of display screen is emergent corresponds, specifically include:
and rotating an eyepiece of the spectrometer to obtain a field angle corresponding to the light emitted from the position where each white straight line is located.
Optionally, the target image is a plurality of white straight lines arranged at intervals under a black background, the plurality of white straight lines are symmetrically arranged with a first straight line as a center, the first straight line is located at the center of the display screen, an orthographic projection of an optical axis of the lens on the display screen is located on the first straight line, the first direction is perpendicular to the white straight line,
obtaining an exit angle of the light at the first position, specifically including:
the angle ruler is controlled to move along a first direction parallel to the display screen, the rotating center of a second arm of the angle ruler is located at a first preset position corresponding to the position of a first white straight line in the white straight lines, the eyepiece is controlled to rotate to a position where the white straight line corresponding to the rotating center of the second arm of the book can be located and a position of an emergent angle of view of emergent light, and the second arm is rotated to enable a linear light beam emitted by the light emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the emergent light from the center point of the first white straight line.
Optionally, the method further includes: and controlling the display screen to rotate in the plane where the display screen is located so as to obtain the light-emitting angle of the light emitted from the position on the display screen except the central point of the white straight line.
The invention has the beneficial effects that: through spectrometer and angle square cooperation, the outgoing angle of the different positions of measurement screen department that can be accurate and the light that lens light path matches provides convenience for the inside corresponding optical design of screen.
Drawings
FIG. 1 shows a schematic view of a target image in an embodiment of the invention;
FIG. 2 is a schematic diagram showing the use of a spectrometer to obtain a first field of view;
FIG. 3 is a schematic structural diagram of a light angle measuring device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
The light emitted by the screen in the VR display only enters the pupil for imaging by the light rays which are matched with the light path angle of the lens, the characteristic of VR display can be utilized to carry out targeted optical design so as to improve the utilization of light energy, this requires the ability to measure the angle of the light rays matching the optical path of the lens at different locations on the screen, for appropriate optical design, however, the light angles at different positions of the screen that match the optical paths of the lenses cannot be obtained at present, and to this problem, the present embodiment provides a light angle measuring device and a light angle measuring method for light output from the display screen.
Specifically, the present embodiment provides a light angle measuring device, as shown in fig. 2 and fig. 3, configured to measure the angle of the outgoing light of the display screen 3, where the display screen 3 is configured to display a target image, and the light angle measuring device includes:
the lens 2 is arranged on the light emitting side of the display screen 3, and the optical axis of the lens 2 is perpendicular to the display screen 3 and is used for converging the light emitted by the display screen 3 to a preset point 10;
a spectrometer 1 including an eyepiece 11 rotatable on a plane perpendicular to the display screen 3 with the preset point 10 as a rotation center, for observing the target image to obtain a first angle of view of the light emitted from the first position of the display screen 3;
an angle ruler 5 including a first arm 51 capable of being disposed perpendicularly to the display screen 3, and a second arm 52 capable of rotating about the first arm 51;
the light-emitting unit 6 is fixedly arranged on the second arm 52 and used for emitting linear light beams parallel to the length direction of the second arm 52;
a control structure, configured to control the angle ruler 5 to move along a first direction parallel to the display screen 3, so that the rotation center of the second arm 52 is located at a preset position corresponding to the first position, and control the eyepiece 11 to rotate to a position where the first field angle can be obtained, and rotate the second arm 52 so that the linear light beam emitted by the light emitting unit 6 can be incident on the center of the eyepiece 11 to obtain the exit angle of the light at the first position;
wherein the distance L between the centre of rotation 50 of the second arm 52 and the lens 2 is the same as the distance between the first position and the lens 2.
With the above-mentioned solution, the target image is observed through the eyepiece 11 of the spectrometer 1 to obtain the first field angle of the light emitted from the first position of the display screen 3, the light emitting unit 6 emits a linear light beam, so that the eyepiece 11 of the spectrometer 1 can observe the light beam, and the light emitting unit 6 is fixed on the second arm 52 of the angle ruler 5, the direction of the linear light beam is parallel to the length direction of the second arm 52 of the angle ruler 5, the first arm 51 of the angle ruler 5 is perpendicular to the display screen 3, under the control of the control structure, the rotation center of the second arm 52 is located at the preset position corresponding to the first position, and the eyepiece 11 is controlled to rotate to the position where the first field angle can be obtained, the second arm 52 is rotated so that the linear light beam emitted by the light emitting unit 6 can be incident to the center of the eyepiece 11, at this time, the angle between the first arm 51 and the second arm 52 of the angle ruler 5 is the outgoing angle of the light at the first position corresponding to the first field angle.
The specific structural form of the light emitting unit 6 may be various, as long as it can emit a linear light beam, and in an embodiment of the present embodiment, the light emitting unit 6 includes a laser. The laser emits a laser beam so that a small spot can be observed by the eyepiece 11 of the spectrometer 1, thereby more accurately obtaining the exit angle of the light matched with the optical path of the lens 2 at different positions of the screen.
In this embodiment, the control structure includes:
the translation table 4 is positioned on one side of the display screen 3 and used for fixing the angle ruler 5;
and the translation unit is used for controlling the angle ruler 5 to move in the first direction.
The angle ruler 5 is movably arranged on the translation table 4, the translation unit can control the angle ruler 5 to move on the translation table 4 along the first direction, so that the angle ruler 5 can be moved to a position where the light emergent angle needs to be measured, and the emergent angles of light rays at a plurality of positions on the display screen 3 can be measured.
For example, in an embodiment of this embodiment, the translation unit includes a guide rail disposed on the translation stage 4, the angle ruler 5 is movably disposed on the guide rail through a connecting member, the translation unit further includes a driving structure, and a transmission structure connected between the driving structure and the angle ruler 5, the driving structure may be a motor, and the transmission structure may be a transmission shaft.
In another embodiment of this embodiment, the angle ruler 5 may be fixed to the translation stage 4, the translation unit may include a driving mechanism that drives the translation stage 4 to move along the first direction, the driving mechanism may include a motor, and may also include an air cylinder, and the angle ruler 5 may be controlled to move in the first direction by controlling the translation stage 4 to move in the first direction.
In this embodiment, the control structure further includes a rotation unit for controlling the rotation of the second arm 52.
The specific structural form of the rotation unit may be various, as long as the second arm 52 can be controlled to rotate, and the rotation center of the second arm 52, i.e. the connection point of the first arm 51 and the second arm 52, in an embodiment of the present embodiment, the rotation unit includes a robot arm, and the second arm 52 can be controlled to rotate around the rotation center 50 thereof to be close to the first arm 51 or far away from the first arm 51.
Of course, the rotation of the second arm 52 may also be manually controlled, but compared to the way of automatically controlling the rotation of the second arm 52 by providing the rotating unit, the manual rotation of the second arm 52 is less efficient, and the cost of human resources is increased.
In this embodiment, as shown in fig. 1, the target image is a plurality of white straight lines arranged at intervals under a black background, the plurality of white straight lines are symmetrically arranged with a first straight line as a central axis, the first straight line is located at the center of the display screen 3, an orthogonal projection of the optical axis of the lens 2 on the display screen 3 is located on the first straight line, the first direction is perpendicular to the white straight line, and the first position is a position where a central point of any one of the white straight lines is located.
In this embodiment, the distance Δ between the adjacent white straight lines is 1mm, but not limited thereto, and in practical use, the image size may be appropriately adjusted to match the display screens 3 with different sizes.
In an implementation manner of this embodiment, as shown in fig. 1, the position of the first straight line is marked as x0(the mark is a position in the X direction), the positions of the white lines from left to right may be marked as X in sequence-n…x-3、x-2、x-1、x0、x1、x2、x3…xn. The eyepiece 11 of the spectrometer 1 is rotated on a plane perpendicular to the display screen 3 with the preset point 10 as a rotation center for observing the target image to obtain the angle of view of the light emitted from any one of the white straight lines, as shown in fig. 2 (the schematic diagram of the path between the display screen 3 and the lens 2 in fig. 2 does not show the light), which will be located at xnThe field angle label corresponding to the white straight line of (n-n … -2, -1, 0, 1, 2 … n) is alphan(n-n … -2, -1, 0, 1, 2 … n), e.g. at x0The angle of view corresponding to the first straight line is alpha0At x is located at1The angle of view corresponding to the white straight line of the position is alpha1。
What spectrometer 1 eyepiece 11 observed is, each the light of the central point outgoing of white straight line, the optical axis of lens 2 is in orthographic projection on the display screen 3 with the coincidence of the central point of first straight line, follow the light of the central point outgoing of first straight line is located x0Angle of view α corresponding to the first straight line of position0The field angle is 0, which is an angle between the light emitted from the lens 2 and the optical axis of the lens 2 after the corresponding light passes through the lens 2, and is corresponding to the light emitted from the other straight lines except the first straight line, as shown in fig. 2.
In practical use, the target image is not limited to the arrangement of the patterns described above according to practical needs.
A straight line, which is required to measure a position on the display screen 3 other than the center point of the white straight line, may move the position of the display screen 3 on the premise of ensuring that the distance between the display screen 3 and the lens 2 is not changed, for example, in an embodiment of this embodiment, the light angle measuring apparatus further includes a moving structure for controlling the translation and/or rotation of the display screen 3 in the plane where the moving structure is located, and the moving structure includes a first moving unit for controlling the translation of the display screen 3 in any direction in the plane where the moving structure is located (the plane where the display screen 3 is located), and/or includes a second moving unit for controlling the rotation of the display screen 3 in the plane where the moving structure is located.
A plane of an eyepiece 11 of the spectrometer 1 rotating around the preset point 10 is set as a first plane, the first plane is perpendicular to the display screen 3), and the first moving unit and/or the second moving unit are/is arranged so that an intersection point of the first plane and the plane where the display screen 3 is located changes, thereby measuring angles of emergent light rays at a plurality of positions on the display screen 3, and even measuring an emergent angle of light rays which can enter the lens 2 and can pass through the lens 2 and converge at the preset point 10 among emergent light rays on the whole display screen 3.
The specific structure of the first moving unit may be various, for example, the first moving unit may include a cylinder, but is not limited thereto.
The second moving unit may have various specific configurations, for example, the second moving unit includes a rotary table for fixing the display screen 3 and a rotation motor for controlling the rotation of the rotary table, and the display screen 3 may be rotated in synchronization with the rotary table.
In general, an orthographic projection of the optical axis of the lens 2 on the display screen 3 coincides with a central point of the first straight line (the first straight line is located at the center of the display screen 3 in the first direction (the X direction in fig. 2)) on the display screen 3, in a specific embodiment of this embodiment, the light angle measuring apparatus further includes a control unit for controlling the display screen 3 to rotate on a plane where the display screen 3 is located, so as to obtain a light emitting angle of light emitted from a position on the display screen 3 other than the central point of the white straight line, that is, the moving structure only includes the second moving unit.
In an embodiment of this embodiment, the lens 2 is an aspheric convex lens, and specifically, the lens 2 may be an aspheric biconvex lens, but in actual use, the type of the lens is not limited to the above, and the corresponding lens may be selected according to an actually required light-gathering effect.
In the present embodiment, the angle gauge 5 is a digital display angle gauge 5, but the invention is not limited thereto.
It should be noted that the preset point 10 mentioned above is the best position for human eyes to observe clear images.
The embodiment also provides a method for measuring the light angle of the light emitted from the display screen 3, which adopts the device for measuring the light angle to measure, and comprises the following steps:
when the display screen 3 displays the target image, observing the target image through an eyepiece 11 of the spectrometer 1 to obtain a first viewing angle corresponding to the light emitted from the first position of the display screen 3;
obtaining the emergent angle of the light at the first position, controlling the angle ruler 5 to move along a first direction parallel to the display screen 3, enabling the rotation center of the second arm 52 of the angle ruler 5 to be located at a preset position corresponding to the first position, controlling the eyepiece 11 to rotate to a position where the first angle of view can be obtained, and rotating the second arm 52 to enable the linear light beam emitted by the light-emitting unit 6 to be incident to the center of the eyepiece 11 to obtain the emergent angle of the light at the first position.
Optionally, the target image is a plurality of white straight lines arranged at intervals under a black background, the plurality of white straight lines are symmetrically arranged with a first straight line as a center, the first straight line is located at the center of the display screen 3, an orthographic projection of the optical axis of the lens 2 on the display screen 3 is located on the first straight line, the first direction is perpendicular to the white straight line,
in an embodiment of this embodiment, observing the target image through the eyepiece 11 of the spectrometer 1 to obtain a first field angle corresponding to the light emitted from the first position of the display screen 3 specifically includes:
and rotating an eyepiece 11 of the spectrometer 1 to obtain the angle of view corresponding to the light emitted from the position where each white straight line is located.
In one embodiment of this embodiment, the target image is a plurality of white straight lines arranged at intervals under a black background, the plurality of white straight lines are symmetrically arranged on both sides with a first straight line as a center, the first straight line is located at the center of the display screen 3, an orthographic projection of the optical axis of the lens 2 on the display screen 3 is located on the first straight line, the first direction is perpendicular to the white straight line,
obtaining an exit angle of the light at the first position, specifically including:
the angle ruler 5 is controlled to move along a first direction parallel to the display screen 3, the rotating center 50 of a second arm 52 of the angle ruler 5 is located at a first preset position corresponding to the position of a first white straight line in the white straight lines, the eyepiece 11 is controlled to rotate to a position where the white straight line corresponding to the rotating center of the second arm 52 is located and a position where the angle of field of the emergent light can be obtained, and the second arm 52 is rotated to enable the linear light beam emitted by the light emitting unit 6 to be incident to the center of the eyepiece 11 so as to obtain the emergent angle of the emergent light from the center point of the first white straight line.
The first preset position is such that the distance between the centre of rotation of the second arm 52 and the lens 2 is the same as the distance between the display screen 3 and the lens 2.
The following specifically describes the measurement process of the method for measuring the light angle of the light emitted from the display screen 3 in this embodiment.
S1: presetting a target image, the target image is the white straight line that many intervals under the black background set up, many the white straight line uses first straight line to set up as central bilateral symmetry, just first straight line is located the center of display screen 3, the optical axis of lens 2 is in orthographic projection on the display screen 3 is located on the first straight line, first direction with white straight line looks vertically, and to many first straight line is in mark on the first direction: the position mark of the first straight line is x0(the mark is a position in the X direction), the positions of the white lines from left to right may be marked as X in sequence-n…x-3、x-2、x-1、x0、x1、x2、x3…xn。
S2: the eyepiece (11) of the spectrometer (1) is rotated about the predetermined point (10) at a position perpendicular to the display screen (3)Rotating on the plane, observing the target image to obtain a secondary mark xnAngle of view α of any one of the white straight-line outgoing raysn；
S3: fixing a laser on the second arm 52 of the angle ruler 5, so that the laser can emit a laser beam parallel to the length direction of the second arm 52, and fixing the angle ruler 5 on the translation table 4, so as to ensure that the distance between the rotation center of the second arm 52 and the lens 2 is the same as the distance between the display screen 3 and the lens 2;
s4: moving the center of rotation of the angled second arm 52 to the mark xnAnd the center of rotation of the eyepiece 11 of the spectrometer 1 is made to coincide with the preset point 10, and then the eyepiece 11 of the spectrometer 1 is rotated to the position corresponding to the mark x obtained in step S2nAngle of view α corresponding to the position ofnThe position of (a);
s5: rotating the second arm 52 of the angle ruler 5 to make the laser beam from the laser incident on the center of the eyepiece 11, and recording the rotation angle theta displayed by the angle ruler 5nAt the time, the angle scale 5 displays the rotation angle thetanI.e. angle of view αnCorresponding to x on the display screen 3nThe exit angle of the light at the location.
In this embodiment, the method for measuring the light angle of the light emitted from the display screen 3 further includes the following steps: and controlling the display screen 3 to rotate in the plane where the display screen 3 is located so as to obtain the light-emitting angle of the light emitted from the position on the display screen 3 except the central point of the white straight line.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A light angle measuring device for measuring the angle of light exiting a display screen, the display screen for displaying a target image, comprising:
the lens is arranged on the light emitting side of the display screen, the optical axis of the lens is perpendicular to the display screen, and the lens is used for converging the light emitted by the display screen to a preset point;
a spectrometer, including an eyepiece capable of rotating on a plane perpendicular to the display screen with the preset point as a rotation center, for observing the target image to obtain a first field angle of light emitted from a first position of the display screen;
the angle ruler comprises a first arm and a second arm, wherein the first arm can be perpendicular to the display screen, the second arm is hinged with the first arm, and the second arm can rotate around a connecting point of the second arm and the first arm;
the light-emitting unit is fixedly arranged on the second arm and used for emitting linear light beams parallel to the length direction of the second arm;
the control structure is used for controlling the angle ruler to move along a first direction parallel to the display screen, enabling the rotation center of the second arm to be located at a preset position corresponding to the first position, and controlling the eyepiece to rotate to a position where the first angle of view can be obtained, and rotating the second arm to enable the linear light beam emitted by the light-emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the light at the first position;
wherein a distance between the preset position and the lens is the same as a distance between the first position and the lens.
2. The light angle measuring device of claim 1, wherein the light emitting unit comprises a laser.
3. The light angle measuring device of claim 1, wherein the control structure comprises:
the translation table is positioned on one side of the display screen and used for fixing the angle ruler;
and the translation unit is used for controlling the angle ruler to move in the first direction.
4. The light angle measuring device of claim 1, wherein the control structure further comprises a rotation unit that controls rotation of the second arm.
5. The light angle measuring device of claim 1, wherein the target image is a plurality of white straight lines on a black background, the white straight lines are symmetrically arranged with a first straight line as a central axis, the first straight line is located at the center of the display screen, an orthographic projection of the optical axis of the lens on the display screen is located on the first straight line, the first direction is perpendicular to the white straight lines, and the first position is a position where a central point of any one of the white straight lines is located.
6. The light angle measuring device according to claim 5, further comprising a control unit for controlling the display screen to rotate in a plane in which the display screen is located, so as to obtain the light-emitting angle of the light emitted from a position on the display screen other than the center point of the white straight line.
7. The light angle measuring device of claim 1, wherein the lens is an aspheric convex lens.
8. A method for measuring a light angle of light emitted from a display screen, the method being measured by the light angle measuring device according to any one of claims 1 to 7, the method comprising the steps of:
when the target image is displayed on the display screen, observing the target image through an eyepiece of the spectrometer to obtain a first field angle corresponding to light emitted from a first position of the display screen;
the emergent angle of the light at the first position is obtained, the angle ruler is controlled to move along a first direction parallel to the display screen, the rotating center of a second arm of the angle ruler is located at a preset position corresponding to the first position, the eyepiece is controlled to rotate to a position where the first visual angle can be obtained, and the second arm is rotated to enable a linear light beam emitted by the light emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the light at the first position.
9. The method as claimed in claim 8, wherein the target image is a plurality of white lines spaced apart from each other under a black background, the white lines are symmetrically disposed around a first line at a center of the display screen, the first line is located at the center of the display screen, an orthographic projection of the optical axis of the lens on the display screen is located on the first line, and the first direction is perpendicular to the white lines,
observe the target image through the eyepiece of spectrometer in order to obtain the first angle of view that the light that the first position of display screen is emergent corresponds, specifically include:
and rotating an eyepiece of the spectrometer to obtain a field angle corresponding to the light emitted from the position where each white straight line is located.
10. The method as claimed in claim 8, wherein the target image is a plurality of white lines spaced apart from each other under a black background, the white lines are symmetrically disposed around a first line at a center of the display screen, the first line is located at the center of the display screen, an orthographic projection of the optical axis of the lens on the display screen is located on the first line, and the first direction is perpendicular to the white lines,
obtaining an exit angle of the light at the first position, specifically including:
the angle ruler is controlled to move along a first direction parallel to the display screen, the rotating center of a second arm of the angle ruler is located at a first preset position corresponding to the position of a first white straight line in the white straight lines, the eyepiece is controlled to rotate to a position where the white straight line corresponding to the rotating center of the second arm of the book can be located and a position of an emergent angle of view of emergent light, and the second arm is rotated to enable a linear light beam emitted by the light emitting unit to be incident to the center of the eyepiece so as to obtain the emergent angle of the emergent light from the center point of the first white straight line.
11. The method of claim 10, further comprising: and controlling the display screen to rotate in the plane where the display screen is located so as to obtain the light-emitting angle of the light emitted from the position on the display screen except the central point of the white straight line.
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| Publication number | Priority date | Publication date | Assignee | Title |
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