CN109827524A - Light angle measuring device and display screen go out the light angle measurement method of light - Google Patents
Light angle measuring device and display screen go out the light angle measurement method of light Download PDFInfo
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- CN109827524A CN109827524A CN201910222995.9A CN201910222995A CN109827524A CN 109827524 A CN109827524 A CN 109827524A CN 201910222995 A CN201910222995 A CN 201910222995A CN 109827524 A CN109827524 A CN 109827524A
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Abstract
The present invention relates to a kind of light angle measuring devices, measure for the angle to display screen emergent ray, and display screen is used for display target image, comprising: lens, the light for display screen to be emitted converge at preset；Spectrometer, including the first field angle of the light of the first position outgoing of display screen can be obtained for observing target image using preset as rotation center, the eyepiece rotated in the plane perpendicular with display screen；Bevel protractor, including the first arm and the second arm；Luminescence unit, for issuing the linear light beam parallel with the length direction of the second arm；Control structure, it rotates for making the rotation center of the second arm be located at predeterminated position corresponding with first position and controlling eyepiece to the position that can obtain the first field angle, rotates the linear light beam that the second arm enables luminescence unit to issue and be incident to the center of eyepiece, the shooting angle to obtain the light at first position.The invention further relates to the light angle measurement methods that a kind of display screen goes out light.
Description
Technical field
The present invention relates to display production technical fields more particularly to a kind of light angle measuring device and display screen to go out
The light angle measurement method of light.
Background technique
Virtual reality (Virtual Reality, VR) technology is a kind of computer that can be created with the experiencing virtual world
Analogue system, it generates a kind of simulated environment using computer, is a kind of interactive Three-Dimensional Dynamic view of Multi-source Information Fusion
The system emulation of scape and entity behavior is immersed to user in the environment.VR show in the light that is emitted of screen only and lens
The matched light of light path angle enters pupil image, can use this feature that VR is shown and carries out targetedly optical design,
To promote the utilization of light energy, this is required at measurement screen different location and the matched light angle of lens optical path, so as to
Carry out corresponding optical design.
Summary of the invention
In order to solve the above technical problem, the present invention provides the light that a kind of light angle measuring device and display screen go out light
Angle measurement method, can measure at screen different location with the matched light angle of lens optical path.
In order to achieve the above object, the technical solution adopted by the present invention is that: a kind of light angle measuring device, for aobvious
The angle of display screen emergent ray measures, and the display screen is used for display target image, comprising:
Lens are set to the light emission side of the display screen, the optical axis of the lens and the perpendicular setting of the display screen, use
Preset is converged in the light for being emitted the display screen；
Spectrometer, including that can be revolved using the preset as rotation center, in the plane perpendicular with the display screen
The eyepiece turned obtains the first field angle of the light of the first position outgoing of the display screen for observing the target image；
Bevel protractor, including that and can be rotated around first arm with the first arm of the perpendicular setting of the display screen
The second arm；
Luminescence unit is fixedly installed on second arm, parallel with the length direction of second arm for issuing
Linear light beam；
Control structure moves along the first direction parallel with the display screen for controlling the bevel protractor, makes
The rotation center of second arm, which is located at predeterminated position corresponding with the first position and controls the eyepiece, to be rotated to energy
The position of first field angle is enough obtained, the linear light beam that second arm enables the luminescence unit to issue is rotated and enters
The center that is incident upon the eyepiece, the shooting angle to obtain the light at the first position；
Wherein, between the distance between the predeterminated position and the lens and the first position and the lens away from
From identical.
Optionally, the luminescence unit includes laser.
Optionally, the control structure includes:
Translation stage, positioned at the side of the display screen, for fixing the bevel protractor；
Translation unit moves in said first direction for controlling the bevel protractor.
Optionally, the control structure further includes the rotary unit of control the second arm rotation.
Optionally, the target image is a plurality of spaced white straight line under black background, and a plurality of white is straight
Line is arranged by center axial symmetry of first straight line, and the first straight line is located at the center of the display screen, the light of the lens
The orthographic projection of axis on the display screen is located in the first straight line, and the first direction and the white straight line are perpendicular,
The first position is the position where white straight central point described in any bar.
Optionally, further include for controlling the display screen in the control unit of the Plane Rotation where the display screen,
To obtain the light-emitting angle of the light of the position outgoing from the display screen in addition to the central point of the white straight line.
Optionally, the lens are aspherical convex lens.
The present invention also provides the light angle measurement methods that a kind of display screen goes out light, measure dress using above-mentioned light angle
Set measurement, comprising the following steps:
In display screen display target image, target image is observed to obtain the first position of display screen by the eyepiece of spectrometer
Corresponding first field angle of the light of outgoing；
The shooting angle of the light at the first position is obtained, controls bevel protractor along parallel with display screen first
Direction is mobile, makes the rotation center of the second arm of bevel protractor be located at predeterminated position corresponding with the first position and controls
It makes the eyepiece to rotate to the position that can obtain first field angle, rotates second arm and luminescence unit is issued
Linear light beam can be incident to the center of the eyepiece, the shooting angle to obtain the light at the first position.
Optionally, the target image is a plurality of spaced white straight line under black background, and a plurality of white is straight
Line is symmetrical arranged by center two sides of first straight line, and the first straight line is located at the center of the display screen, the lens
The orthographic projection of optical axis on the display screen is located in the first straight line, and the first direction mutually hangs down with the white straight line
Directly,
Target image is observed by the eyepiece of spectrometer to obtain the light corresponding first of the first position outgoing of display screen
Field angle specifically includes:
The eyepiece of the spectrometer is rotated, the light for obtaining the position outgoing where white straight line described in each is corresponding
Field angle.
Optionally, the target image is a plurality of spaced white straight line under black background, and a plurality of white is straight
Line is symmetrical arranged by center two sides of first straight line, and the first straight line is located at the center of the display screen, the lens
The orthographic projection of optical axis on the display screen is located in the first straight line, and the first direction mutually hangs down with the white straight line
Directly,
The shooting angle for obtaining the light at the first position, specifically includes:
Control bevel protractor moves along the first direction parallel with display screen, makes in the rotation of the second arm of bevel protractor
The heart is located at the first predeterminated position corresponding with the position where the first white straight line in a plurality of white straight line and controls
The eyepiece is rotated to the light of position, outgoing where white straight line corresponding to the rotation center that can obtain institute's the second arm of book
The position of the field angle of line rotates the linear light beam that second arm enables luminescence unit to issue and is incident to the eyepiece
Center, the shooting angle to obtain the light being emitted from the central point of the described first white straight line.
Optionally, further includes: control the display screen in the plane internal rotation where the display screen, to obtain from described
The light-emitting angle of the light of position outgoing on display screen in addition to the central point of the white straight line.
The beneficial effects of the present invention are: matching by spectrometer and bevel protractor, screen difference position can be accurately measured
The shooting angle at place Yu the matched light of lens optical path is set, is provided convenience for the corresponding optical design of inside screen.
Detailed description of the invention
Fig. 1 shows target image schematic diagrames in the embodiment of the present invention；
Fig. 2 indicates the schematic diagram that the first field angle is obtained using spectrometer；
Fig. 3 indicates light angle measuring device structural schematic diagram in the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained, shall fall within the protection scope of the present invention.
VR show in light of the light that is emitted of screen only with lens optical path angle automatching enter pupil image, Ke Yili
Targetedly optical design is carried out with this feature that VR is shown, to promote the utilization of light energy, this is required to measurement screen
With the matched light angle of lens optical path at different location, to carry out corresponding optical design, and can not be shielded at present
With the matched light angle of lens optical path at curtain different location, in response to this problem, the present embodiment provides a kind of measurements of light angle
Device and display screen go out the light angle measurement method of light, and each position of target image shown using spectrometer, measure display screen is passed through
Field angle after lens measures each position of target image using the bevel protractor for carrying the luminescence unit 6 that can issue linear light beam
The shooting angle of the light at place provides convenience for the corresponding optical design of inside screen.
Specifically, the present embodiment provides a kind of light angle measuring devices, as shown in Figures 2 and 3, for display screen 3
The angle of emergent ray measures, and the display screen 3 is used for display target image, comprising:
Lens 2, are set to the light emission side of the display screen 3, the optical axis of the lens 2 with the display screen 3 is perpendicular sets
It sets, the light for the display screen 3 to be emitted converges at preset 10；
Spectrometer 1, including can be rotation center with the preset 10, in the plane perpendicular with the display screen 3
The eyepiece 11 of upper rotation obtains the first of the light of the first position outgoing of the display screen 3 for observing the target image
Field angle；
Bevel protractor 5 and can be around first arm including can be with the first arm 51 of the perpendicular setting of the display screen 3
Second arm 52 of 51 rotations；
Luminescence unit 6 is fixedly installed on second arm 52, for issuing the length direction phase with second arm 52
Parallel linear light beam；
Control structure moves along the first direction parallel with the display screen 3 for controlling the bevel protractor 5, makes
The rotation center for obtaining second arm 52, which is located at predeterminated position corresponding with the first position and controls the eyepiece 11, to be revolved
The position that can obtain first field angle is gone to, second arm 52 is rotated and makes the linear of the sending of luminescence unit 6
Light beam can be incident to the center of the eyepiece 11, the shooting angle to obtain the light at the first position；
Wherein, the distance between the rotation center 50 of second arm 52 and the lens 2 L and the first position and institute
It is identical to state the distance between lens 2.
Using the above scheme, the target image is observed to obtain the first of the display screen 3 by the eyepiece 11 of spectrometer 1
First field angle of the light of position outgoing, luminescence unit 6 issues linear light beam, in order to which the eyepiece 11 of spectrometer 1 can be seen
This light beam is observed, and luminescence unit 6 is fixed on the second arm 52 of the bevel protractor 5, direction and the bevel protractor 5 of linear light beam
The length direction of second arm 52 is parallel, the first arm 51 of the bevel protractor 5 and the perpendicular setting of display screen 3, in the control
Under the control of structure, so that the rotation center of second arm 52 is located at predeterminated position corresponding with the first position, and
It controls the eyepiece 11 and rotates the position that can extremely obtain first field angle, rotate second arm 52 and make described shine
The linear light beam that unit 6 issues can be incident to the center of the eyepiece 11, at this point, the first arm 51 of the bevel protractor 5 and the
Angle between two arms 52 is the shooting angle of the light at the corresponding first position of first field angle.
The specific constructive form of the luminescence unit 6 can there are many, as long as linear light beam, this implementation can be issued
In one embodiment of example, the luminescence unit 6 includes laser.Laser issues laser beam, the mesh of the spectrometer 1 described in this way
Mirror 11 can be obtained more accurately matched with 2 optical path of lens at screen different location in this way it can be observed that lesser hot spot
The shooting angle of light.
In the present embodiment, the control structure includes:
Translation stage 4, positioned at the side of the display screen 3, for fixing the bevel protractor 5；
Translation unit moves in said first direction for controlling the bevel protractor 5.
The bevel protractor 5 is movably set on the translation stage 4, and the translation unit can control the bevel protractor
5 move on the translation stage 4, along the first direction, in this manner it is possible to which move angle ruler 5 goes out to needing to measure light
The position of firing angle degree, and the shooting angle of the light of multiple positions on display screen 3 can be measured.
The specific constructive form of the translation unit can there are many, it is described for example, in an embodiment of the present embodiment
Translation unit includes the guide rail being set on the translation stage 4, and the bevel protractor 5 is movably set to described by connector
On guide rail, the translation unit further includes driving structure, and the biography being connected between the driving structure and the bevel protractor 5
Dynamic structure, the driving structure can be a motor, and the drive mechanism can be a transmission shaft.
In another embodiment of the present embodiment, the bevel protractor 5 can also be fixed on the translation stage 4, described flat
Moving unit includes the driving structure for driving the translation stage 4 to move along the first direction, which may include electricity
Machine also may include cylinder, be moved in said first direction by controlling the translation stage 4, and then control the bevel protractor 5
It moves in said first direction.
In the present embodiment, the control structure further includes the rotary unit that control second arm 52 rotates.
The specific constructive form of the rotary unit can there are many, as long as can control second arm 52 rotation i.e.
Can, and the rotation center of second arm 52, that is, first arm 51 and second arm 52 tie point, the one of the present embodiment
In embodiment, the rotary unit includes robot arm, can control second arm 52 and rotates about the rotation of center 50,
Close to first arm 51 or far from first arm 51.
Certainly, the rotation of second arm 52 can also with manual control, but compared to the rotary unit is set and from
The mode that dynamic control second arm 52 rotates, it is lower manually to rotate 52 efficiency of the second arm, increases cost of human resources.
In the present embodiment, as shown in Figure 1, the target image is a plurality of spaced white straight line under black background,
The a plurality of white straight line is arranged by center axial symmetry of first straight line, and the first straight line is located in the display screen 3
The optical axis of the heart, the lens 2 is located in the first straight line in the orthographic projection on the display screen 3, the first direction and institute
State that white straight line is perpendicular, the first position is the position where white straight central point described in any bar.
In the present embodiment, the separation delta between the adjacent white straight line is 1mm, but is not limited thereto, and is actually used
In, can adjustment picture size appropriate to match various sizes of display screen 3.
In one embodiment of the present embodiment, as shown in Figure 1, the position mark of the first straight line is x0(label is X
The position in direction), the position of white straight line can successively be labeled as x from left to right-n…x-3、x-2、x-1、x0、x1、x2、x3…xn。
The eyepiece 11 of the spectrometer 1 with the preset 10 is rotation center, revolves in the plane perpendicular with the display screen 3
Turn, the field angle for the light being emitted from any white straight line, (Fig. 2 as shown in Figure 2 are obtained for observing the target image
The path schematic diagram of light is not represented between middle display screen 3 and lens 2), x will be located atn(n=-n ... -2, -1,0,1,2 ...
N) field angle of the white line correspondences is labeled as αn(- 2, -1,0,1,2 ... n of n=-n ...), such as positioned at x0Described
The corresponding field angle of one straight line is α0, it is located at x1The field angle of the white line correspondences of position is α1。
1 eyepiece 11 of spectrometer observes that the light of the central point outgoing of white straight line described in each is described
Orthographic projection of the optical axis of lens 2 on the display screen 3 is overlapped with the central point of the first straight line, from the first straight line
The light of central point outgoing is located at x0The corresponding field angle α of the first straight line of position0It is 0, except the first straight line
The corresponding field angle of light of other straight lines outgoing is corresponding light after the lens 2, is spread out of from the lens 2
Angle between light and the optical axis of the lens 2, as shown in Figure 2.
It should be noted that in actual use, according to actual needs, the target image is not limited to pattern described above
Setting.
The straight line for needing to measure the position on the display screen 3 other than the central point of the white straight line, described in guarantee
Under the premise of the distance between display screen 3 and the lens 2 are constant, the position of the display screen 3 can be moved, for example, this reality
It applies in an embodiment of example, the light angle measuring device further includes flat where it for controlling the display screen 3
The moving structure for translating and/or rotating in face, the moving structure includes controlling the display screen 3 in the plane where it
Either (plane where the display screen 3 itself) and/or includes the control display to the first movement unit of translation
Second mobile unit of plane internal rotation of the screen 3 where it.
It is first flat that set the eyepiece 11 of the spectrometer 1, which be the plane that rotation center is rotated with the preset 10,
First plane described in face and the display screen 3 are perpendicular), the first movement unit and/or second mobile unit are set
It sets, so that the intersection point of first plane and the plane where the display screen 3 changes, so as to measure the display
The angle of the light of the outgoing of multiple positions on screen 3, it might even be possible to measure in the light being emitted on the entire display screen 3, can
With enter the lens 2 and can pass through the lens 2 converge at the preset 10 light shooting angle.
The specific constructive form of the first movement unit can there are many, for example, the first movement unit can wrap
Cylinder is included, but is not limited thereto.
The specific constructive form of second mobile unit can there are many, for example, second mobile unit include use
In the turntable of the fixation display screen 3, and the rotating electric machine for controlling the turntable rotation, the display screen 3 can
With the turntable synchronous rotary.
Under normal circumstances, the optical axis of the lens 2 is in the orthographic projection on the display screen 3 and the institute on the display screen 3
State first straight line (first straight line be located at the display screen 3 in the first direction (X-direction described in Fig. 2) in
The heart) central point be overlapped, in a specific embodiment of the present embodiment, in one specific embodiment of the present embodiment, light angle
Measuring device further includes for controlling the display screen 3 in the control unit of the Plane Rotation where the display screen 3, to obtain
The light-emitting angle of the light of position outgoing from the display screen 3 in addition to the central point of the white straight line, i.e., the described shifting
Dynamic structure only includes second mobile unit.
In one embodiment of the present embodiment, the lens 2 are aspherical convex lens, specifically, the lens 2 can be non-
The biconvex lens of spherical surface, but in actual use, the type of the lens be not limited to it is described above, can be according to actually required
Spotlight effect selects corresponding lens.
In the present embodiment, the bevel protractor 5 uses Digit Display Angle Ruler 5, but is not limited thereto.
It should be noted that being observed that clearly image is most foregoing relate to the preset 10 arrived for human eye
Best placement.
The present embodiment also provides the light angle measurement method that a kind of display screen 3 goes out light, is surveyed using above-mentioned light angle
Measure device measurement, comprising the following steps:
In 3 display target image of display screen, target image is observed by the eyepiece 11 of spectrometer 1 to obtain the of display screen 3
Corresponding first field angle of light of one position outgoing；
Obtain the shooting angle of the light at the first position, control bevel protractor 5 is along parallel with display screen 3 the
One direction is mobile, make the rotation center of the second arm 52 of bevel protractor 5 be located at predeterminated position corresponding with the first position,
And control the eyepiece 11 and rotate the position that can extremely obtain first field angle, it rotates second arm 52 and makes the list that shines
The linear light beam that member 6 issues can be incident to the center of the eyepiece 11, the outgoing to obtain the light at the first position
Angle.
Optionally, the target image is a plurality of spaced white straight line under black background, and a plurality of white is straight
Line is symmetrical arranged by center two sides of first straight line, and the first straight line is located at the center of the display screen 3, the lens 2
Optical axis be located in the first straight line in the orthographic projection on the display screen 3, the first direction and the white straight line phase
Vertically,
In one embodiment of the present embodiment, target image is observed by the eyepiece 11 of spectrometer 1 to obtain the of display screen 3
Corresponding first field angle of light of one position outgoing, specifically includes:
The eyepiece 11 of the spectrometer 1 is rotated, the light pair of the position outgoing where white straight line described in each is obtained
The field angle answered.
In one embodiment of the present embodiment, the target image is a plurality of spaced white straight line under black background,
The a plurality of white straight line is symmetrical arranged by center two sides of first straight line, and the first straight line is located at the display screen 3
The optical axis at center, the lens 2 is located in the first straight line in the orthographic projection on the display screen 3, the first direction with
The white straight line is perpendicular,
The shooting angle for obtaining the light at the first position, specifically includes:
Control bevel protractor 5 moves along the first direction parallel with display screen 3, makes the second arm 52 of bevel protractor 5
Rotation center 50 is located at the first default position corresponding with the position where the first white straight line in a plurality of white straight line
It sets and controls where the eyepiece 11 rotation can extremely obtain white straight line corresponding to the rotation center of institute's the second arm of book 52
Position, outgoing light field angle position, rotate the linear light beam that second arm 52 enables luminescence unit 6 to issue
It is incident to the center of the eyepiece 11, the shooting angle for the light being emitted with acquisition from the central point of the described first white straight line.
First predeterminated position make the distance between the rotation center of second arm 52 and the lens 2 with it is described
Display screen 3 is identical as the distance between the lens 2.
Display screen 3 goes out the measurement process of the light angle measurement method of light in detailed description below the present embodiment.
S1: default target image, the target image is a plurality of spaced white straight line under black background, a plurality of described
White straight line is symmetrical arranged by center two sides of first straight line, and the first straight line is located at the center of the display screen 3, described
The optical axis of lens 2 is located in the first straight line in the orthographic projection on the display screen 3, and the first direction and the white are straight
Line is perpendicular, and a plurality of first straight line is marked in said first direction: the position mark of the first straight line
For x0(position that the label is X-direction), the position of white straight line can successively be labeled as x from left to right-n…x-3、x-2、x-1、
x0、x1、x2、x3…xn。
S2: the eyepiece 11 of the spectrometer 1 with the preset 10 is rotation center, perpendicular with the display screen 3
Plane on rotate, observe the target image to obtain from labeled as xnAny white straight line outgoing light visual field
Angle αn；
S3: laser is fixed on the second arm 52 of the bevel protractor 5, and laser is issued and second arm
The parallel laser beam of 52 length direction, bevel protractor 5 is fixed on translation stage 4, guarantees the rotation center of second arm 52
The distance between described lens 2 and the display screen 3 are identical as the distance between the lens 2；
S4: the rotation center of second arm of angle 52 is moved to labeled as xnPosition, and by the mesh of the spectrometer 1
The rotation center of mirror 11 is overlapped with the preset 10, then rotate the eyepiece 11 of the spectrometer 1 to obtained in S2 step
Be labeled as xnThe corresponding field angle α in positionnPosition；
S5: rotating the second arm 52 of the bevel protractor 5, so that the laser beam that laser issues can be incident to the mesh
The center of mirror 11, the rotation angle, θ that record bevel protractor 5 is shownn, the bevel protractor 5 is shown at this time rotation angle, θnAs with view
Rink corner αnX on corresponding display screen 3nThe shooting angle of light at position.
In the present embodiment, the light angle measurement method that display screen 3 goes out light is further comprising the steps of: controlling the display screen
3 in the plane internal rotation where the display screen 3, with obtain from the display screen 3 except the central point of the white straight line with
The light-emitting angle of the light of outer position outgoing.
The above is present pre-ferred embodiments, it should be noted that those skilled in the art,
Under the premise of not departing from principle of the present invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as
The scope of the present invention.
Claims (11)
1. a kind of light angle measuring device, measures, which is characterized in that described for the angle to display screen emergent ray
Display screen is used for display target image, comprising:
Lens are set to the light emission side of the display screen, the optical axis of the lens and the perpendicular setting of the display screen, and being used for will
The light of the display screen outgoing converges at preset；
Spectrometer, including what can be rotated using the preset as rotation center, in the plane perpendicular with the display screen
Eyepiece obtains the first field angle of the light of the first position outgoing of the display screen for observing the target image；
Bevel protractor, including can with the first arm of the perpendicular setting of the display screen, and can be rotated around first arm the
Two arms；
Luminescence unit is fixedly installed on second arm, for issuing the line parallel with the length direction of second arm
Property light beam；
Control structure, moved for controlling the bevel protractor along the first direction parallel with the display screen, make it is described
The rotation center of second arm, which is located at predeterminated position corresponding with the first position and controls the eyepiece, to be rotated to can obtain
The position of first field angle is obtained, the linear light beam that second arm enables the luminescence unit to issue is rotated and is incident to
The center of the eyepiece, the shooting angle to obtain the light at the first position；
Wherein, the distance between the predeterminated position and the lens and the distance between the first position and the lens phase
Together.
2. light angle measuring device according to claim 1, which is characterized in that the luminescence unit includes laser.
3. light angle measuring device according to claim 1, which is characterized in that the control structure includes:
Translation stage, positioned at the side of the display screen, for fixing the bevel protractor；
Translation unit moves in said first direction for controlling the bevel protractor.
4. light angle measuring device according to claim 1, which is characterized in that the control structure further includes control institute
State the rotary unit of the second arm rotation.
5. light angle measuring device according to claim 1, which is characterized in that the target image is under black background
A plurality of spaced white straight line, a plurality of white straight line are arranged by center axial symmetry of first straight line, and described first
Straight line is located at the center of the display screen, and the orthographic projection of the optical axis of the lens on the display screen is located at the first straight line
On, the first direction and the white straight line are perpendicular, and the first position is white straight central point institute described in any bar
Position.
6. light angle measuring device according to claim 5, which is characterized in that further include for controlling the display screen
In the control unit of the Plane Rotation where the display screen, to obtain from the display screen except the center of the white straight line
The light-emitting angle of the light of position outgoing other than point.
7. light angle measuring device according to claim 1, which is characterized in that the lens are aspherical convex lens.
8. the light angle measurement method that a kind of display screen goes out light, which is characterized in that described in any item using claim 1-7
The measurement of light angle measuring device, comprising the following steps:
In display screen display target image, target image is observed by the eyepiece of spectrometer to obtain the first position of display screen and be emitted
Corresponding first field angle of light；
The shooting angle of the light at the first position is obtained, controls bevel protractor along the first direction parallel with display screen
Movement makes the rotation center of the second arm of bevel protractor be located at predeterminated position corresponding with the first position and controls institute
It states eyepiece to rotate to the position that can obtain first field angle, rotates second arm and make the linear of luminescence unit sending
Light beam can be incident to the center of the eyepiece, the shooting angle to obtain the light at the first position.
9. the light angle measurement method that display screen according to claim 8 goes out light, which is characterized in that the target image is
A plurality of spaced white straight line under black background, a plurality of white straight line are symmetrically set by center two sides of first straight line
It sets, and the first straight line is located at the center of the display screen, the orthographic projection position of the optical axis of the lens on the display screen
In in the first straight line, the first direction and the white straight line are perpendicular,
Target image is observed by the eyepiece of spectrometer to obtain corresponding first visual field of light of the first position outgoing of display screen
Angle specifically includes:
The eyepiece of the spectrometer is rotated, the corresponding visual field of light of the position outgoing where white straight line described in each is obtained
Angle.
10. the light angle measurement method that display screen according to claim 8 goes out light, which is characterized in that the target image
For a plurality of spaced white straight line under black background, a plurality of white straight line is symmetrical as center two sides using first straight line
Setting, and 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
In the first straight line, the first direction and the white straight line are perpendicular,
The shooting angle for obtaining the light at the first position, specifically includes:
Control bevel protractor moves along the first direction parallel with display screen, makes the rotation center position of the second arm of bevel protractor
Described in the first predeterminated position corresponding with the position where the first white straight line in a plurality of white straight line and control
Eyepiece is rotated to the light of position, outgoing where white straight line corresponding to the rotation center that can obtain institute's the second arm of book
The position of field angle rotates the linear light beam that second arm enables luminescence unit to issue and is incident in the eyepiece
The heart, the shooting angle to obtain the light being emitted from the central point of the described first white straight line.
11. the light angle measurement method that display screen according to claim 10 goes out light, which is characterized in that further include: control
The display screen is made in the plane internal rotation where the display screen, to obtain from the display screen except the white straight line
The light-emitting angle of the light of position outgoing other than central point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222995.9A CN109827524B (en) | 2019-03-22 | 2019-03-22 | Light angle measuring device and light angle measuring method for light emitted by display screen |
Applications Claiming Priority (1)
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| CN109827524B (en) | 2020-12-04 |
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