WO2017166796A1 - 透明显示屏清晰度的检测方法和检测装置 - Google Patents

透明显示屏清晰度的检测方法和检测装置 Download PDF

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Publication number
WO2017166796A1
WO2017166796A1 PCT/CN2016/103003 CN2016103003W WO2017166796A1 WO 2017166796 A1 WO2017166796 A1 WO 2017166796A1 CN 2016103003 W CN2016103003 W CN 2016103003W WO 2017166796 A1 WO2017166796 A1 WO 2017166796A1
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Prior art keywords
transparent display
display screen
sharpness
detecting
pattern
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PCT/CN2016/103003
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English (en)
French (fr)
Inventor
来航曼
张志刚
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京东方科技集团股份有限公司
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Priority to US15/539,801 priority Critical patent/US20180136125A1/en
Publication of WO2017166796A1 publication Critical patent/WO2017166796A1/zh

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59Transmissivity
    • G01N21/5907Densitometers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59Transmissivity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02Testing optical properties
    • G01M11/0242Testing optical properties by measuring geometrical properties or aberrations
    • G01M11/0257Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
    • G01M11/0264Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested by using targets or reference patterns
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/95Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958Inspecting transparent materials or objects, e.g. windscreens
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59Transmissivity
    • G01N21/5907Densitometers
    • G01N2021/5957Densitometers using an image detector type detector, e.g. CCD
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00Features of devices classified in G01N21/00
    • G01N2201/06Illumination; Optics
    • G01N2201/063Illuminating optical parts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00Features of devices classified in G01N21/00
    • G01N2201/06Illumination; Optics
    • G01N2201/063Illuminating optical parts
    • G01N2201/0635Structured illumination, e.g. with grating

Definitions

  • At least one embodiment of the present disclosure is directed to a method and apparatus for detecting the clarity of a transparent display screen.
  • Transparent display In order to evaluate the transparency effect, it is necessary to measure the sharpness of the object behind the transparent display.
  • the transparent display has a certain transparency to display information on the transparent display, or to see the rear background through the transparent display when the information is displayed on the transparent display or not.
  • the transparent display can be applied to building exterior walls, display windows, exhibition panels, vending machines, closets, transparent refrigerators or car windows, providing advertising, image interface and other content.
  • At least one embodiment of the present disclosure provides a method and a detection device for detecting the sharpness of a transparent display screen, which can better evaluate the transparency effect of the transparent display screen.
  • At least one embodiment of the present disclosure provides a method for detecting the sharpness of a transparent display screen, comprising: directly detecting the reference pattern sheet by using a measuring device spaced apart from the reference pattern sheet, and obtaining the reference pattern sheet without a screen display value; a transparent display screen is placed between the measuring device and the reference pattern sheet; and the reference pattern sheet is detected by the measuring device through the transparent display screen to obtain a screen of the reference pattern sheet Measured; obtaining a sharpness of the transparent display screen according to the screenless measurement value and the screened measurement value; wherein the reference pattern sheet comprises a plurality of pattern groups sequentially arranged in a first direction, Each pattern set includes a first area having a first color and a second area having a second color different from the first color, the first direction being the first direction The width of the plurality of pattern groups is different.
  • At least one embodiment of the present disclosure provides a detecting device for a transparent display screen sharpness, comprising: a reference pattern sheet including a plurality of pattern groups sequentially arranged in a first direction, each pattern group including a first area And a second region having a first color, the second region having a second color different from the first color, wherein the plurality of pattern groups have different widths in the first direction; a measuring device disposed to be spaced apart from the reference pattern sheet and having a predetermined distance and configured to place a transparent display screen and a transparent display screen between the measuring device and the reference pattern sheet Measurements were taken to obtain screenless measurements and screened measurements of the reference pattern sheet.
  • FIG. 1 is a schematic diagram of a method for detecting a sharpness of a transparent display screen according to an embodiment of the present disclosure
  • FIG. 2a is a schematic diagram of a reference pattern sheet provided by an example of an embodiment of the present disclosure
  • FIG. 2b is a schematic diagram of a reference pattern sheet according to another example of an embodiment of the present disclosure.
  • 2c is a schematic diagram of a reference pattern sheet according to another example of an embodiment of the present disclosure.
  • 3a-3c are schematic diagrams of reference pattern sheets provided by another example of an embodiment of the present disclosure.
  • FIG. 4 is a graph showing the sharpness of a transparent display screen as a function of fringe frequency according to an example of an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a measured brightness curve according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a device for detecting the sharpness of a transparent display screen according to an embodiment of the present disclosure.
  • 1-reference pattern sheet 2-measuring device; 3-transparent display screen; 10-pattern group; 101-first pattern group; 102-second pattern group; 103-third pattern group; 1001-first area; - second area; 4-transparent display support device; 5-evaluation device.
  • the transparency of a transparent display refers to the clarity of the object as viewed by the human eye through the transparent display.
  • the penetrability of transparent materials is usually characterized by haze.
  • the transparency of the transparent display can be evaluated by measuring the haze.
  • this method does not consider the sharpness of the object behind the transparent display.
  • a reference with black and white stripes can be used, and the brightness of the black and white portions of the reference is measured by a brightness meter through a transparent display, and the ratio of the brightness of the two parts is calculated, and the ratio is used to measure the transparency of the transparent display. effect.
  • this method only considers the contrast of objects behind the transparent display.
  • an embodiment of the present disclosure provides a method for detecting the clarity of a transparent display screen.
  • the reference pattern sheet 1 is directly detected by the measuring device 2 spaced apart from the reference pattern sheet 1 to obtain a screenless measurement value of the reference pattern sheet 1; placed between the measuring device 2 and the reference pattern sheet 1
  • the transparent display screen 3; the reference pattern sheet 1 is detected by the measuring device 2 through the transparent display screen 3, and the screen-measured value of the reference pattern sheet 1 is obtained; the clearness of the transparent display screen 3 is obtained according to the screenless measurement value and the screen-mounted measurement value. degree.
  • the reference pattern sheet 1 includes a plurality of pattern groups 10 sequentially arranged in a first direction, each pattern group 10 including a first area 1001 and a second area 1002, the first area 1001 having a first color, and the second area 1002 There is a second color different from the first color, and the widths of the plurality of pattern groups 10 are different in the first direction.
  • the first direction is, for example, a certain direction, as shown in FIG. 1, and the first direction is, for example, the X direction.
  • a plurality of, for example, means more than one. It should be noted that, in the embodiment of the present disclosure, the number of pattern groups is not limited to the one shown in the drawings.
  • the field 1002 is a stripe pattern extending in the second direction, the second direction being perpendicular to the first direction, and the second direction being, for example, the Y direction.
  • the width of the plurality of pattern groups 10 gradually changes in the first direction.
  • the gradual change includes, for example, a gradual increase and a gradual decrease, and FIGS. 2a-2c are exemplified by a gradual decrease in width.
  • the widths of the plurality of pattern groups 10 in the first direction are gradually changed in an arithmetic progression. The setting of the plurality of pattern groups 10 whose widths are gradually changed can obtain the gradual change in definition of the transparent display screen.
  • the first region 1001 and the second region 1002 in each pattern set 10 have different widths in the first direction.
  • the tendency of the plurality of first regions 1001 to vary in width in the first direction and the tendency for the plurality of second regions 1002 to vary in width in the first direction are the same.
  • the trend of change includes, for example, an increase or decrease.
  • the plurality of first regions 1001 gradually decrease in width in the first direction
  • the plurality of second regions 1002 also gradually decrease in width in the first direction.
  • the first pattern group 101, the second pattern group 102, and the third pattern group 103 are the first of each pattern group.
  • the region and the second region have different widths in the first direction, and from left to right, the widths of the first pattern group 101, the second pattern group 102, and the third pattern group 103 are gradually decreased.
  • the plurality of first regions 1001 and the plurality of second regions 1002 alternately arranged in the first direction may be sequentially decreased in width from left to right, but are not limited thereto.
  • the first region 1001 and the second region 1002 of each pattern group 10 may also have the same width in the first direction.
  • each pattern group 10 gradually decreases in width from the left to the right in the first direction.
  • each of the first regions 1001 may gradually change in width in the first direction, and the width of each of the second regions 1002 does not change.
  • the width of each of the second regions 1002 in the first direction may gradually change, and the width of each of the first regions 1001 does not change.
  • the embodiments of the present disclosure do not limit this.
  • the pattern of the reference pattern sheet 1 is not limited to that shown in FIGS. 2a-2c.
  • the reference pattern sheet 1 has a first area 1001 and a second area.
  • 1002 is a nested annular target pattern, the first direction is, for example, a radial direction pointing from the center of the circle to the outside of the circle; the reference pattern sheet 1 may also have the first region 1001 and the second region 1002 being nested hexagons or
  • the circular pattern of the octagonal shape or the like is not limited herein.
  • the pattern of the reference pattern sheet 1 may also be as shown in FIG.
  • the reference pattern sheet 1 having the first region 1001 and the second region 1002 being a checkerboard pattern alternately arranged in the first direction and the second direction, the second direction being vertical In the first direction
  • the first region 1001 and the second region 1002 of the reference pattern sheet 1 are rectangles alternately disposed in two directions perpendicular to each other.
  • the pattern of the reference pattern sheet 1 may also be as shown in FIG. 3c, the reference pattern sheet 1 having the first region 1001 and the second region 1002 being grid patterns alternately arranged in the first direction and the second direction, the second direction being vertical In the first direction.
  • the first region 1001 of the reference pattern sheet 1 has an orthogonal grid structure
  • the second region 1002 is a blank region in the grid structure.
  • each pattern of the reference pattern sheet 1 is obtained according to the screenless measurement value.
  • the screenless modulation contrast of the group 10 is obtained according to the screen measurement value; and then, the screen-modulated contrast and the n-th pattern group according to the nth pattern group 10 are obtained.
  • the ratio of the screenless modulation contrast ratio of 10 determines the sharpness Cn of the transparent display screen 3 corresponding to the nth pattern group 10, and the definition Cn is linearly proportional to the ratio:
  • C(n) is the screenless modulation contrast of the nth pattern group 10
  • C'(n) is the screen modulation contrast of the nth pattern group 10
  • n is an integer greater than 0
  • k is a positive number.
  • k 1 may be made, but is not limited thereto, and k may be any positive number.
  • the values of k may be the same for different sets of patterns in the reference pattern sheet of the same transparent display screen. When comparing between different transparent displays, the value of k can be the same for comparison.
  • the degree of sharpness of the reference pattern sheet 1 can be more objectively and accurately represented using modulation contrast instead of directly using the contrast of the first area 1001 and the second area 1002.
  • the method further comprises: obtaining the definition of the transparent display screen according to the stripe frequency of each pattern group and the definition of each pattern group. a curve of the fringe frequency change to obtain the sharpness of the transparent display screen 3 at different fringe frequencies, and the fringe frequency (LP/mm) of the nth pattern group is the first region 1001 of the nth pattern group in a unit length The number of second regions 1002 (Line Pairs, LP).
  • the fringe frequency of the nth pattern group may be 1/(dn1+dn2), that is, Nth pattern group
  • the fringe frequency may be a reciprocal of the sum of the widths of the first region 1001 and the second region 1002 in the first direction in the first pattern group.
  • the curve of the clarity of the transparent display as a function of the fringe frequency can be seen in Figure 4.
  • the definition of the transparent display decreases. Thereby, it is possible to obtain a clear definition of the transparent display screen at which the fringe frequency is better, for example, at a low fringe frequency or a high fringe frequency, the transparency of the transparent display screen is better.
  • the luminance values of the first region 1001 and the second region 1002 in each pattern group 10 are obtained by measuring the luminance curve of the reference pattern sheet 1. It should be noted that the embodiment of the present disclosure is not limited thereto, and the definition of the transparent display screen may also be obtained by other measured values.
  • the screenless modulation contrast is:
  • the screenless modulation contrast C(n) is the ratio of the difference between Lmax(n) and Lmin(n) and the sum of Lmax(n) and Lmin(n).
  • Lmax(n) is the maximum brightness value of the first region 1001 and the second region 1002 in the nth pattern group 10 measured in the case of no screen detection
  • Lmin(n) is no screen detection.
  • the minimum brightness value of the first region 1001 and the second region 1002 in the nth pattern group 10 is measured.
  • the screen modulation contrast is:
  • the screen-modulated contrast C'(n) is a ratio of the difference between L'max(n) and L'min(n) and the sum of L'max(n) and L'min(n).
  • L'max(n) is the maximum brightness value of the first region 1001 and the second region 1002 in the nth pattern group 10 measured in the case of screen detection
  • L'min(n) is In the case of screen detection, the minimum brightness values of the first region 1001 and the second region 1002 in the nth pattern group 10 are measured.
  • FIG. 5 shows a screen-detected luminance curve of two pattern groups, for example, from left to right, respectively, a first pattern group and a second pattern group, and the screen-modulated contrast ratio of the first pattern group is:
  • the screen-modulated contrast of the second pattern set is:
  • the screen-modulated contrast of other pattern groups can be referred to the screen-modulated contrast ratio of the first pattern group and the screen-modulated contrast ratio of the second pattern group.
  • the brightness curve obtained by the screenless detection can be utilized. It should be noted that the screenless modulation contrast and the screen modulation contrast are not limited to the methods given above.
  • the distance between the measuring device 2 and the reference pattern sheet 1 is equal. Set the distance equal to obtain a reliable comparison result.
  • the distance between the measuring device, the transparent display, and the reference pattern can be adjusted as needed.
  • the screenless detection in the embodiment of the present disclosure refers to the detection performed without placing a transparent display screen between the reference pattern sheet and the measuring device, and the screen detection refers to the reference pattern sheet and the measuring device. Detection is performed with a transparent display placed between them.
  • the first color is different from the gray level of the second color.
  • the first color is black and the second color is white. If the range of the gray value is defined as 0-255, the black gray value is set to 0, and the white gray value is set to 255.
  • the first color of the first area 1001 and the second color of the second area 1002 are not limited thereto.
  • the first color may also be red, blue, or green, etc., and the second color may also be yellow or pink, and the like.
  • the transparent display 3 has a gray scale of 0-255.
  • the transparent display screen may display an image or may display an image.
  • the detection of the clarity of the transparent display can be performed under dark room conditions or under ambient light illumination, which is not limited herein, and the conditions are the same when performing screenless measurement and screenless measurement.
  • the light source may or may not be provided in the case of the detection in the darkroom condition, which is not limited by the embodiment of the present disclosure. If a light source is provided, the light source may be disposed on one side of the reference pattern sheet at a fixed predetermined distance from the reference pattern sheet to form a uniform predetermined illuminance on the reference pattern sheet.
  • the color used in the transparent display detection is not limited, and may be, for example, red (Red), green (Green), blue (Blue), blue (Cyan, C). ), magenta (Magenta, M), yellow (Yellow, Y) and other colors.
  • the modulation contrast in the embodiment of the present disclosure refers to a value obtained by processing the value of the contrast, and further, for example, a value obtained by processing the measured value of the contrast. Further, for example, it refers to a value obtained by calculating a contrast value by a given method or a given formula.
  • a given method or a given formula is not limited to the method or formula described in the embodiments of the present disclosure.
  • An embodiment of the present disclosure further provides a device for detecting the clarity of a transparent display screen, as shown in FIG. 6, comprising: a reference pattern sheet 1 and a measuring device 2.
  • the reference pattern sheet 1 includes a plurality of pattern groups 10 sequentially arranged in a first direction, each pattern group 10 including a first area 1001 and a second area 1002, the first area 1001 having a first color, and the second area 1002 having The second color different from the first color has a different width of the plurality of pattern groups 10 in the first direction.
  • the measuring device 2 may be disposed to be spaced apart from the reference pattern sheet 1 and have a predetermined distance, and configured to dispose the transparent display screen 3 between the measuring device 2 and the reference pattern sheet 1 and to place the transparent display screen 3
  • the measurements are separately performed to obtain the no-screen measurement value and the on-screen measurement value of the reference pattern sheet 1.
  • the measuring device 2 may include, for example, an image pickup device such as a charge coupled device (CCD), a complementary metal oxide semiconductor (CMOS) device, etc., and the measuring device 2 may further include a storage device that stores the collected data or the like as needed.
  • the measuring device 2 can be, for example, a brightness measuring device.
  • the detection device for the transparency of the transparent display screen has different widths of the plurality of pattern groups 10 of the reference pattern sheet 1 such that the reference pattern sheet 1 contains two basic elements for describing the sharpness: sharpness And resolution.
  • the measurement of the sharpness can be made more accurate.
  • the resolution of the transparent display screen can be obtained by calculation according to the screenless measurement value and the on-screen measurement value measured by the detecting device of the transparent display screen sharpness provided by the above-mentioned embodiments of the present disclosure.
  • the centers of the reference pattern sheet 1, the transparent display screen 3, and the measuring device 2 may be in a straight line.
  • the detection device for the clarity of the transparent display may further include: a transparent display support device 4.
  • the transparent display screen supporting device 4 is disposed between the measuring device 2 and the reference pattern sheet 1 and is configured to place the transparent display screen 3 between the measuring device 2 and the reference pattern sheet 1 or from the measuring device 2 and the reference pattern sheet Remove between 1 and 1.
  • the transparent display screen support device 4 is designed to place the transparent display screen 3 in the optical path between the measuring device 2 and the reference pattern sheet 1, or from the optical path between the measuring device 2 and the reference pattern sheet 3.
  • the transparent display screen 3 is disposed 50 cm away from the reference pattern sheet 1 by the transparent display screen supporting device 4.
  • the transparent display support device 4 may be a support device such as a stand or a jig that fixes the transparent display, which can be moved by a driver (not shown).
  • the detection device for the clarity of the transparent display may further comprise: an evaluation device 5.
  • the evaluation device 5 is configured to obtain each pattern group 10 of the reference pattern sheet 1 based on the screenless measurement value.
  • the screenless modulation contrast, the screen-modulated contrast of each pattern group 10 of the reference pattern sheet 1 is obtained according to the screen-measured value, and then the screen-free modulation contrast of the nth pattern group 10 and the screenless modulation of the nth pattern group 10
  • the contrast ratio determines the sharpness Cn of the transparent display screen 3 corresponding to the nth pattern group 10.
  • the definition Cn is linearly proportional to the ratio:
  • C(n) is the screenless modulation contrast of the nth pattern group 10
  • C'(n) is the screen modulation contrast of the nth pattern group 10
  • n is an integer greater than 0
  • k is a positive number.
  • the evaluation device 5 is further configured to obtain a curve of the sharpness of the transparent display screen 3 as a function of the fringe frequency according to the fringe frequency of each of the pattern groups 10 and the sharpness of each of the pattern groups 10 to obtain a transparent display screen 3.
  • the fringe frequency of the nth pattern group 10 is the number of the first region 1001 and the second region 1002 in the nth pattern group in the unit length. See the previous description for the fringe frequency.
  • the evaluation device 5 can be connected to the measurement device to record the no-screen measurement values and the on-screen measurement values obtained by the measurement device for further calculation.
  • the evaluation device 5 can be implemented by a computer or a computer module, for example, a CPU, a DSP, a PLC, or the like, and can be implemented by, for example, hardware, software, firmware, or a combination thereof, which is not limited herein.
  • the evaluation device 5 can be provided to greatly increase the calculation efficiency.
  • the widths of the plurality of pattern groups 10 gradually change in the first direction.
  • the widths of the plurality of pattern groups 10 in the first direction are gradually changed in an arithmetic progression.
  • the first region 1001 and the second region 1002 in each pattern group 10 have the same width in the first direction.
  • the first region 1001 and the second region 1002 in each pattern group 10 have different widths in the first direction.
  • the tendency of the plurality of first regions 1001 to vary in width in the first direction and the tendency for the plurality of second regions 1002 to vary in width in the first direction are the same.
  • the first color is different from the gray level of the second color.
  • the detection device for the transparency of the transparent display screen has a first color of black and red. Color, blue or green, the second color is white, yellow or pink.
  • the transparent display 3 has a gray scale of 0-255.
  • the reference pattern sheet 1 has a first region 1001 and a second region 1002 which are nested annular target patterns, and the first region 1001 and the second region 1002 are along the first The strip-shaped pattern extending in two directions, the first region 1001 and the second region 1002 are checkerboard patterns or grid patterns alternately disposed in the first direction and the second direction, and the second direction is perpendicular to the first direction.
  • the reference pattern sheet, the transparent display screen, the first color, and the second color may refer to the related description in the method for detecting the clarity of the transparent display screen given in the embodiment of the present disclosure, and details are not described herein again.
  • the method for detecting the sharpness of the transparent display screen in the embodiment of the present disclosure can detect the sharpness of the transparent display screen by using the detecting device for the transparency of the transparent display screen in the embodiment of the present disclosure.
  • the transparent display screen in the embodiment of the present disclosure includes a liquid crystal transparent display screen, an organic light emitting diode (OLED) transparent display screen, and the like.
  • OLED organic light emitting diode
  • the reference pattern sheet 1 includes two basic elements describing sharpness: sharpness and resolution.
  • sharpness that is, the contrast, the greater the contrast, the clearer the boundary between the first region 1001 and the second region 1002; the resolution, that is, the number of patterns (eg, the same pattern group) included in the unit length, the greater the number, the resolution The higher.
  • the reference pattern sheet 1 can make the measurement of the sharpness more accurate.

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Abstract

一种透明显示屏清晰度的检测方法和检测装置。该检测方法利用与参考图案片(1)隔开一定距离的测量装置(2)直接检测参考图案片(1),获得参考图案片(1)的无屏测量值;在测量装置(2)和参考图案片(1)之间放置透明显示屏(3);利用测量装置(2)透过透明显示屏(3)检测参考图案片(1),获得参考图案片的有屏测量值;根据无屏测量值和有屏测量值来获得透明显示屏(3)的清晰度;参考图案片(1)包括在第一方向上依次排布的多个图案组(10),每个图案组(10)包括第一区域(1001)和第二区域(1002),第一区域(1001)具有第一颜色,第二区域(1002)具有与第一颜色不同的第二颜色,在第一方向上多个图案组(10)的宽度不同。该检测方法可以更好的评价透明显示屏的透明效果。

Description

透明显示屏清晰度的检测方法和检测装置 技术领域
本公开至少一实施例涉及一种透明显示屏清晰度的检测方法和检测装置。
背景技术
随着信息技术的发展,透明显示技术愈发引起人们的关注。透明显示为了评价透明效果,需要测量透明显示屏背后物体的清晰度。透明显示屏具有一定的穿透性,即可在透明显示屏上显示信息,也可在透明显示屏上显示或不显示信息时透过透明显示屏看到后方的背景。透明显示屏可适用于建筑物外墙、展示橱窗、展会展板、自动贩卖机、壁橱、透明冰箱或者汽车车窗上,提供广告、图像界面等内容。
发明内容
本公开至少一实施例提供一种透明显示屏清晰度的检测方法和检测装置,可以更好的评价透明显示屏的透明效果。
本公开的至少一实施例提供了一种透明显示屏清晰度的检测方法,包括:利用与参考图案片隔开一定距离的测量装置直接检测所述参考图案片,获得所述参考图案片的无屏测量值;在所述测量装置和所述参考图案片之间放置透明显示屏;利用所述测量装置透过所述透明显示屏检测所述参考图案片,获得所述参考图案片的有屏测量值;根据所述无屏测量值和所述有屏测量值来获得所述透明显示屏的清晰度;其中,所述参考图案片包括在第一方向上依次排布的多个图案组,每个图案组包括第一区域和第二区域,所述第一区域具有第一颜色,所述第二区域具有与所述第一颜色不同的第二颜色,在所述第一方向上所述多个图案组的宽度不同。
本公开的至少一实施例提供了一种透明显示屏清晰度的检测装置,包括:参考图案片,其包括在第一方向上依次排布的多个图案组,每个图案组包括第一区域和第二区域,所述第一区域具有第一颜色,所述第二区域具有与所述第一颜色不同的第二颜色,在所述第一方向上所述多个图案组的宽度不同; 测量装置,其设置来与所述参考图案片隔开并具有一预定的距离,并被配置来在所述测量装置与所述参考图案片之间未放置透明显示屏和放置透明显示屏的情况下进行测量以获得所述参考图案片的无屏测量值和有屏测量值。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例的附图作简单地介绍,显而易见地,下面描述中的附图仅仅涉及本发明的一些实施例,而非对本发明的限制。
图1为本公开一实施例提供的透明显示屏清晰度的检测方法的示意图;
图2a为本公开一实施例的一个示例提供的参考图案片的示意图;
图2b为本公开一实施例的另一个示例提供的参考图案片的示意图;
图2c为本公开一实施例的另一个示例提供的参考图案片的示意图;
图3a-3c为本公开一实施例的另一个示例提供的参考图案片的示意图;
图4为本公开一实施例的一个示例提供的透明显示屏的清晰度随条纹频率变化的曲线;
图5为本公开一实施例的一个示例测得的亮度曲线示意图;
图6为本公开一实施例的一种透明显示屏清晰度的检测装置的示意图。
附图标记:
1-参考图案片;2-测量装置;3-透明显示屏;10-图案组;101-第一图案组;102-第二图案组;103-第三图案组;1001-第一区域;1002-第二区域;4-透明显示屏支撑装置;5-评估装置。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例的附图,对本发明实施例的技术方案进行清楚、完整地描述。显然,所描述的实施例是本发明的一部分实施例,而不是全部的实施例。基于所描述的本发明的实施例,本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例,都属于本发明保护的范围。
除非另外定义,本公开使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开的实施例中使用的“第 一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。同样,“一个”、“一”或者“该”等类似词语也不表示数量限制,而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同,而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接,而是可以包括电性的连接,不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也可能相应地改变。
透明显示屏的透明效果指的是人眼透过透明显示屏所观察到的物体的清晰程度。
透明材料的穿透性通常采用雾度(Haze)来表征。通过测量雾度可以评价透明显示屏的透明效果。但该方法没有考虑透明显示屏背后物体的清晰度。
可以使用带有黑白条纹的参考物,并利用亮度测量仪透过透明显示屏分别测量该参考物的黑色和白色部分的亮度,计算两部分亮度的比值,使用该比值来衡量透明显示屏的透明效果。但该方法只考虑了透明显示屏背后物体的对比度。
如图1所示,本公开一实施例提供一种透明显示屏清晰度的检测方法。在该方法之中,利用与参考图案片1隔开一定距离的测量装置2直接检测参考图案片1,获得参考图案片1的无屏测量值;在测量装置2和参考图案片1之间放置透明显示屏3;利用测量装置2透过透明显示屏3检测参考图案片1,获得参考图案片1的有屏测量值;根据无屏测量值和有屏测量值来获得透明显示屏3的清晰度。
该参考图案片1包括在第一方向上依次排布的多个图案组10,每个图案组10包括第一区域1001和第二区域1002,第一区域1001具有第一颜色,第二区域1002具有与第一颜色不同的第二颜色,在第一方向上多个图案组10的宽度不同。
第一方向例如是指某一方向,如图1所示,第一方向例如是指X方向。多个例如是指大于一个。需要说明的是,本公开的实施例中,图案组的个数不以附图中所示为限。
一些示例中,如图2a-2c所示,参考图案片1中第一区域1001和第二区 域1002为沿第二方向延伸的条状图案,第二方向垂直于第一方向,第二方向例如是指Y方向。
一些示例中,如图2a-2c所示,在第一方向上多个图案组10的宽度逐渐变化。逐渐变化例如包括逐渐增大和逐渐减小,图2a-2c以宽度逐渐减小为例进行说明。进一步的,一些示例中,多个图案组10在第一方向上的宽度呈等差数列逐渐变化。宽度逐渐变化的多个图案组10的设置,可以获得透明显示屏逐渐变化的清晰度。
一些示例中,如图2a所示,每一图案组10中第一区域1001和第二区域1002在第一方向上具有不同的宽度。例如,多个第一区域1001在第一方向上宽度变化的趋势和多个第二区域1002在第一方向上宽度变化的趋势相同。变化的趋势例如包括增大或减小。图2a中,多个第一区域1001在第一方向上宽度逐渐减小,多个第二区域1002在第一方向上宽度也逐渐减小。以第一图案组101、第二图案组102和第三图案组103为例进行说明,第一图案组101、第二图案组102和第三图案组103中,每一图案组中的第一区域和第二区域在第一方向上具有不同的宽度,并且从左至右,第一图案组101、第二图案组102和第三图案组103的宽度逐渐减小。从而,可使得在第一方向上,交替设置的多个第一区域1001和多个第二区域1002从左到右宽度依次减小,但不限于此。另一些示例中,如图2b所示,每一图案组10中第一区域1001和第二区域1002在第一方向上亦可具有相同的宽度。图2b中,各图案组10从左至右在第一方向上宽度逐渐减小。另一个示例中,如图2c所示,多个图案组10中,可各第一区域1001在第一方向上宽度逐渐变化,而各第二区域1002的宽度不变化。当然,亦可各第二区域1002在第一方向上宽度逐渐变化,而各第一区域1001的宽度不变化。本公开的实施例对此不作限定。
需要说明的是,本公开的实施例中参考图案片1的图形不限于图2a-2c所示,另一些示例中,如图3a所示,参考图案片1具有第一区域1001和第二区域1002为嵌套的环形的靶形图案,第一方向例如是指从圆心指向圆外的半径方向;参考图案片1也可以具有第一区域1001和第二区域1002为嵌套的六边形或者八角形等的环形图案,在此不作限定。参考图案片1的图形也可以如图3b所示,参考图案片1具有第一区域1001和第二区域1002为在第一方向和第二方向上均交替设置的棋盘格图案,第二方向垂直于第一方向, 参考图案片1的第一区域1001和第二区域1002为在相互垂直的两个方向上交替设置的矩形。参考图案片1的图形也可以如图3c所示,参考图案片1具有第一区域1001和第二区域1002为在第一方向和第二方向上均交替设置的格栅图案,第二方向垂直于第一方向。参考图案片1中第一区域1001呈正交的格栅结构,第二区域1002为格栅结构中的空白区域。
需要说明的是,每一图案组中,除包括第一区域和第二区域外,还可包括其他区域,本公开的实施例对此不作限定。
在本公开的实施例的一些示例中,在根据无屏测量值和有屏测量值来获得透明显示屏的清晰度的过程中,首先,根据无屏测量值来获得参考图案片1每一图案组10的无屏调制对比度;其次,根据有屏测量值来获得参考图案片1每一图案组10的有屏调制对比度;然后,根据第n图案组10的有屏调制对比度与第n图案组10的无屏调制对比度的比值来确定透明显示屏3对应第n图案组10的清晰度Cn,清晰度Cn与比值成线性比例关系为:
Cn=k C’(n)/C(n),
其中,C(n)为第n图案组10的无屏调制对比度,C’(n)为第n图案组10的有屏调制对比度,n为大于0的整数,k为正数。例如,为了使得计算简便,可使得k=1,但不限于此,k可为任意正数。例如,在k大于零小于等于1的情况下,透明显示屏的清晰度可介于0-100%之间,清晰度的数值越大对应的透明显示屏的透明程度越好。为了方便比较,对应同一透明显示屏的参考图案片中的不同图案组,k的取值可相同。不同透明显示屏之间进行比较时,k的取值可相同,以利于比较。
这些示例中,使用调制对比度而非直接使用第一区域1001和第二区域1002的对比度,可更客观准确得表征参考图案片1的清晰程度。
一些示例中,获得透明显示屏3对应第n图案组10的清晰度Cn后,还包括:根据每一图案组的条纹频率和每一图案组的清晰度来获得透明显示屏3的清晰度随条纹频率变化的曲线,以获得透明显示屏3在不同条纹频率下的清晰度,第n图案组的条纹频率(LP/mm)为单位长度内成对的第n图案组中第一区域1001和第二区域1002的数目(Line Pairs,LP)。例如,假设第n图案组10中第一区域1001和第二区域1002在第一方向上的宽度分别为dn1和dn2,则第n图案组的条纹频率可为1/(dn1+dn2),即第n图案组的 条纹频率可为第n图案组中第一区域1001和第二区域1002在第一方向上的宽度之和的倒数。透明显示屏的清晰度随条纹频率变化的曲线可如图4所示。不同透明显示屏或同一透明显示屏比较时,同一条纹频率下,清晰度越高,透明显示屏的透明效果越好。但由于存在光的衍射现象,随着条纹频率增加,透明显示屏的清晰度降低。从而,可以获得检测的透明显示屏在什么样的条纹频率下清晰度比较好,例如,在低的条纹频率或者高的条纹频率下,透明显示屏的清晰度较好。
一些示例中,通过测量参考图案片1的亮度曲线来获得各图案组10中第一区域1001和第二区域1002的亮度值。需要说明的是,本公开的实施例不限于此,亦可通过其他测量值来获得透明显示屏的清晰度。
一些示例中,无屏调制对比度为:
C(n)=(Lmax(n)-Lmin(n))/(Lmax(n)+Lmin(n)),
即,无屏调制对比度C(n)为Lmax(n)与Lmin(n)之差与Lmax(n)与Lmin(n)之和的比值。例如,上述公式中,Lmax(n)为无屏检测的情况下,测得的第n图案组10中第一区域1001和第二区域1002的最大亮度值;Lmin(n)为无屏检测的情况下,测得的第n图案组10中第一区域1001和第二区域1002的最小亮度值。
一些示例中,有屏调制对比度为:
C’(n)=(L’max(n)-L’min(n))/(L’max(n)+L’min(n)),
即,有屏调制对比度C’(n)为L’max(n)与L’min(n)之差与L’max(n)与L’min(n)之和的比值。例如,上述公式中,L’max(n)为有屏检测的情况下,测得的第n图案组10中第一区域1001和第二区域1002的最大亮度值;L’min(n)为有屏检测的情况下,测得的第n图案组10中第一区域1001和第二区域1002的最小亮度值。
图5示出了两个图案组的有屏检测的亮度曲线,例如从左至右分别为第一图案组和第二图案组,则第一图案组的有屏调制对比度为:
C’(1)=(L’max1-L’min1)/(L’max1+L’min1)。
从图5中可以看出,L’max1=max1,L’min1=min1。
同样,第二图案组的有屏调制对比度为:
C’(2)=(L’max2-L’min2)/(L’max2+L’min2),
从图5中可以看出,L’max2=max2,L’min2=min2。
其他图案组的有屏调制对比度可参照上述第一图案组的有屏调制对比度和第二图案组的有屏调制对比度的计算方式。计算无屏调制对比度时,可利用无屏检测所得的亮度曲线。需要说明的是,无屏调制对比度和有屏调制对比度并不限于上述给出的方法来计算。
一些示例中,进行无屏检测和有屏检测时,测量装置2与参考图案片1的距离相等。设定距离相等,可获得可信赖的比较结果。测量装置、透明显示屏、参考图案片之间的距离可根据需要进行调整。需要说明的是,本公开的实施例中的无屏检测是指在参考图案片和测量装置之间不放置透明显示屏的情况下进行的检测,有屏检测是指在参考图案片和测量装置之间放置透明显示屏的情况下进行的检测。
一些示例中,第一颜色与第二颜色的灰阶不同。在一个示例中,第一颜色为黑色,第二颜色为白色。若将灰度值的范围定义为0-255,则黑色的灰度值设置为0,白色的灰度值设置为255。第一区域1001的第一颜色和第二区域1002的第二颜色并不局限于此。例如,在另一些示例中,第一颜色还可以为红色、蓝色或者绿色等,第二颜色还可以为黄色或粉色等。
一些示例中,透明显示屏3的灰阶为0-255。本公开实施例的检测方法中,透明显示屏可以不显示图像,也可以显示图像。透明显示屏清晰度的检测可以在暗室条件下进行,也可在环境光照射下进行,在此不作限定,在进行无屏测量和有屏测量时条件相同。在暗室条件下检测时,可以设置光源,也可以不设置光源,本公开的实施例对此不作限定。若设置光源,光源可设置于参考图案片的一侧,与参考图案片相距一固定的预定距离,从而在参考图案片上形成均匀的预定照度。在显示屏显示图像的情况下,透明显示屏检测时使用的颜色也不作限定,例如可以是红(Red,R)、绿(Green、G)、蓝(Blue,B)、青(Cyan,C)、品红(Magenta,M)、黄(Yellow,Y)等任何颜色。
本公开实施例中的调制对比度是指对对比度的数值进行处理后所得的数值,进一步的,例如是指对对比度的测量值进行处理后而得的数值。更进一步的,例如是指对对比度的测量值经给定方法或给定公式计算而得的数值。给定方法或给定公式并不限于本公开的实施例中所述的方法或公式。
本公开一实施例还提供一种透明显示屏清晰度的检测装置,如图6所示,包括:参考图案片1和测量装置2。
参考图案片1包括在第一方向上依次排布的多个图案组10,每个图案组10包括第一区域1001和第二区域1002,第一区域1001具有第一颜色,第二区域1002具有与第一颜色不同的第二颜色,在第一方向上多个图案组10的宽度不同。
测量装置2可设置来与参考图案片1隔开并具有一预定的距离,并被配置来在测量装置2与参考图案片1之间未放置透明显示屏3和放置透明显示屏3的情况下,分别进行测量以获得参考图案片1的无屏测量值和有屏测量值。测量装置2例如可以包括电荷耦合器件(CCD)、互补金属氧化物半导体(CMOS)器件等图像采集器件;根据需要,测量装置2还可以包括存储采集的数据的存储装置等。测量装置2例如可以为亮度测量仪。
本公开的上述实施例提供的透明显示屏清晰度的检测装置中,参考图案片1的多个图案组10的宽度不同,使得参考图案片1包含了描述清晰度的两个基本要素:锐度和分辨率。从而,能使清晰度的测量更准确。可根据本公开上述实施例提供的透明显示屏清晰度的检测装置测得的无屏测量值和有屏测量值,通过计算的方式来获得透明显示屏的清晰度。
一些示例中,为了利于测量,参考图案片1、透明显示屏3和测量装置2的中心可在一条直线上。
一些示例中,透明显示屏清晰度的检测装置还可以包括:透明显示屏支撑装置4。该透明显示屏支撑装置4设置于测量装置2和参考图案片1之间,并被配置为将透明显示屏3放入测量装置2和参考图案片1之间或者从测量装置2和参考图案片1之间移出。
透明显示屏支撑装置4设计为将透明显示屏3放置在测量装置2和参考图案片1之间的光路中,或者从测量装置2和参考图案片3之间的光路移出。例如,通过透明显示屏支撑装置4将透明显示屏3设置为与参考图案片1相距50cm。透明显示屏支撑装置4可以为固定透明显示屏的支架或者夹具等支撑装置,其可以通过驱动器(未示出)来移动。
一些示例中,透明显示屏清晰度的检测装置还可以包括:评估装置5。该评估装置5配置来,根据无屏测量值来获得参考图案片1每一图案组10 的无屏调制对比度,根据有屏测量值来获得参考图案片1每一图案组10的有屏调制对比度,然后根据第n图案组10的有屏调制对比度与第n图案组10的无屏调制对比度的比值来确定透明显示屏3对应第n图案组10的清晰度Cn。清晰度Cn与比值成线性比例关系:
Cn=k C’(n)/C(n),
其中,C(n)为第n图案组10的无屏调制对比度,C’(n)为第n图案组10的有屏调制对比度,n为大于0的整数,k为正数。
一些示例中,评估装置5还配置来根据每一图案组10的条纹频率和每一图案组10的清晰度来获得透明显示屏3的清晰度随条纹频率变化的曲线,以获得透明显示屏3在不同条纹频率下的清晰度,第n图案组10的条纹频率为单位长度内成对的第n图案组中第一区域1001和第二区域1002的数目。有关条纹频率可参见之前描述。
例如,评估装置5可与测量装置相连,记录通过测量装置获得的无屏测量值和有屏测量值,进而作进一步计算。评估装置5可为计算机或计算机模块,例如比如CPU、DSP、PLC等实现,又例如可以通过硬件、软件、固件或其组合实现,在此不作限定。评估装置5可提供来大幅度提升计算效率。
一些示例提供的透明显示屏清晰度的检测装置中,在第一方向上多个图案组10的宽度逐渐变化。
一些示例提供的透明显示屏清晰度的检测装置中,多个图案组10在第一方向上的宽度呈等差数列逐渐变化。
一些示例提供的透明显示屏清晰度的检测装置中,每一图案组10中的第一区域1001和第二区域1002在第一方向上具有相同的宽度。
一些示例提供的透明显示屏清晰度的检测装置中,每一图案组10中的第一区域1001和第二区域1002在第一方向上具有不同的宽度。
一些示例提供的透明显示屏清晰度的检测装置中,多个第一区域1001在第一方向上宽度变化的趋势和多个第二区域1002在第一方向上宽度变化的趋势相同。
一些示例提供的透明显示屏清晰度的检测装置中,第一颜色与第二颜色的灰阶不同。
一些示例提供的透明显示屏清晰度的检测装置中,第一颜色为黑色、红 色、蓝色或者绿色,第二颜色为白色、黄色或粉色。
一些示例提供的透明显示屏清晰度的检测装置中,透明显示屏3的灰阶为0-255。
一些示例提供的透明显示屏清晰度的检测装置中,参考图案片1具有第一区域1001和第二区域1002为嵌套的环形的靶形图案、第一区域1001和第二区域1002为沿第二方向延伸的条状图案、第一区域1001和第二区域1002为在第一方向和第二方向上均交替设置的棋盘格图案或格栅图案,第二方向垂直于第一方向。
需要说明的是,有关参考图案片、透明显示屏、第一颜色、第二颜色可参照本公开的实施例给出的透明显示屏清晰度的检测方法中的相关描述,在此不再赘述。
本公开的实施例中的透明显示屏清晰度的检测方法可采用本公开的实施例中的透明显示屏清晰度的检测装置来进行透明显示屏清晰度的检测。
本公开的实施例中的透明显示屏包括液晶透明显示屏、有机发光二极管(OLED)透明显示屏等。
本公开上述实施例提供的透明显示屏清晰度的检测方法和检测装置,具有以下至少之一的有益效果:
(1)使用宽度不同的多个图案组10作为参考图案片1,包含了描述清晰度的两个基本要素:锐度和分辨率。锐度,即对比度,对比度越大,第一区域1001和第二区域1002的边界越清晰;分辨率,即单位长度包含的图案组(例如,同一图案组)的数目,数目越多,分辨率越高。从而,该参考图案片1能使清晰度的测量更准确。
(2)通过测量有透明显示屏时、无透明显示屏时的参考图案片的有屏测量值和无屏测量值,去除了测量仪器对测试结果的影响,直接反映透明显示屏3清晰度的大小,以及透明效果的优劣。
(3)使用每一图案组的调制对比度,而非每一图案组的对比度,更客观准确的表征参考图案片的清晰程度。
有以下几点还需要说明:
(1)本公开的实施例附图中,只涉及到与本公开实施例涉及到的结构,其他结构可参考通常设计。
(2)在不冲突的情况下,本公开的同一实施例及不同实施例中的特征可以相互组合。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。
本专利申请要求于2016年3月28日递交的中国专利申请第201610181493.2号的优先权,在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (29)

  1. 一种透明显示屏清晰度的检测方法,包括:
    利用与参考图案片隔开一定距离的测量装置直接检测所述参考图案片,获得所述参考图案片的无屏测量值;
    在所述测量装置和所述参考图案片之间放置透明显示屏;
    利用所述测量装置透过所述透明显示屏检测所述参考图案片,获得所述参考图案片的有屏测量值;
    根据所述无屏测量值和所述有屏测量值来获得所述透明显示屏的清晰度;
    其中,所述参考图案片包括在第一方向上依次排布的多个图案组,每个图案组包括第一区域和第二区域,所述第一区域具有第一颜色,所述第二区域具有与所述第一颜色不同的第二颜色,在所述第一方向上所述多个图案组的宽度不同。
  2. 根据权利要求1所述的透明显示屏清晰度的检测方法,其中,
    根据所述无屏测量值来获得所述参考图案片每一图案组的无屏调制对比度;
    根据所述有屏测量值来获得所述参考图案片每一图案组的有屏调制对比度;
    根据第n图案组的有屏调制对比度与第n图案组的无屏调制对比度的比值来确定所述透明显示屏对应第n图案组的清晰度Cn,所述清晰度Cn与所述比值成线性比例关系:
    Cn=k C’(n)/C(n),
    其中,C(n)为第n图案组的无屏调制对比度,C’(n)为第n图案组的有屏调制对比度,n为大于0的整数,k为正数。
  3. 根据权利要求2所述的透明显示屏清晰度的检测方法,获得所述透明显示屏对应第n图案组的清晰度Cn后,还包括:
    根据每一图案组的条纹频率和每一图案组的清晰度来获得所述透明显示屏的清晰度随条纹频率变化的曲线,以获得所述透明显示屏在不同条纹频率下的清晰度,第n图案组的条纹频率为单位长度内成对的第n图案组中所述 第一区域和所述第二区域的数目。
  4. 根据权利要求3所述的透明显示屏清晰度的检测方法,其中,通过测量所述参考图案片的亮度曲线来获得各所述图案组中第一区域和第二区域的亮度值。
  5. 根据权利要求4所述的透明显示屏清晰度的检测方法,其中,
    所述无屏调制对比度为:
    C(n)=(Lmax(n)-Lmin(n))/(Lmax(n)+Lmin(n));
    其中,Lmax(n)为无屏检测的情况下,测得的第n图案组中所述第一区域和所述第二区域的最大亮度值;Lmin(n)为无屏检测的情况下,测得的第n图案组中所述第一区域和所述第二区域的最小亮度值。
  6. 根据权利要求4所述的透明显示屏清晰度的检测方法,其中,
    所述有屏调制对比度为:
    C’(n)=(L’max(n)-L’min(n))/(L’max(n)+L’min(n));
    其中,L’max(n)为有屏检测的情况下,测得的第n图案组中所述第一区域和所述第二区域的最大亮度值;L’min(n)为有屏检测的情况下,测得的第n图案组中所述第一区域和所述第二区域的最小亮度值。
  7. 根据权利要求1-6任一项所述的透明显示屏清晰度的检测方法,其中,在所述第一方向上所述多个图案组的宽度逐渐变化。
  8. 根据权利要求7所述的透明显示屏清晰度的检测方法,其中,所述多个图案组在所述第一方向上的宽度呈等差数列逐渐变化。
  9. 根据权利要求7所述的透明显示屏清晰度的检测方法,其中,每一图案组中所述第一区域和所述第二区域在所述第一方向上具有相同的宽度。
  10. 根据权利要求7所述的透明显示屏清晰度的检测方法,其中,每一图案组中所述第一区域和所述第二区域在所述第一方向上具有不同的宽度。
  11. 根据权利要求7所述的透明显示屏清晰度的检测方法,其中,所述多个第一区域在所述第一方向上宽度变化的趋势和所述多个第二区域在所述第一方向上宽度变化的趋势相同。
  12. 根据权利要求1-6任一所述的透明显示屏清晰度的检测方法,其中,无屏检测和有屏检测时,所述测量装置与所述参考图案片的距离相等。
  13. 根据权利要求1-6任一项所述的透明显示屏清晰度的检测方法,其 中,所述第一颜色与所述第二颜色的灰阶不同。
  14. 根据权利要求1-6任一项所述的透明显示屏清晰度的检测方法,其中,所述第一颜色为黑色、红色、蓝色或者绿色,所述第二颜色为白色、黄色或粉色。
  15. 根据权利要求1-6任一项所述的透明显示屏清晰度的检测方法,其中,所述透明显示屏的灰阶为0-255。
  16. 根据权利要求1-6任一项所述的透明显示屏清晰度的检测方法,其中,所述参考图案片具有所述第一区域和所述第二区域为嵌套的环形的靶形图案、所述第一区域和所述第二区域为沿第二方向延伸的条状图案、或所述第一区域和所述第二区域为在第一方向和第二方向上均交替设置的棋盘格图案或格栅图案,其中,所述第二方向垂直于所述第一方向。
  17. 一种透明显示屏清晰度的检测装置,包括:
    参考图案片,其中,所述参考图案片包括在第一方向上依次排布的多个图案组,每个图案组包括第一区域和第二区域,所述第一区域具有第一颜色,所述第二区域具有与所述第一颜色不同的第二颜色,在所述第一方向上所述多个图案组的宽度不同;
    测量装置,其中,所述测量装置设置来与所述参考图案片隔开并具有一预定的距离,并被配置来在所述测量装置与所述参考图案片之间未放置透明显示屏和放置透明显示屏的情况下进行测量以获得所述参考图案片的无屏测量值和有屏测量值。
  18. 根据权利要求17所述的透明显示屏清晰度的检测装置,还包括:透明显示屏支撑装置,
    其中,所述透明显示屏支撑装置设置于所述测量装置和所述参考图案片之间,并被配置为将透明显示屏放入所述测量装置和所述参考图案片之间或者从所述测量装置和所述参考图案片之间移出。
  19. 根据权利要求17所述的透明显示屏清晰度的检测装置,还包括:评估装置,
    其中,所述评估装置配置来,根据所述无屏测量值来获得所述参考图案片每一图案组的无屏调制对比度,根据所述有屏测量值来获得所述参考图案片每一图案组的有屏调制对比度,并根据第n图案组的有屏调制对比度与第 n图案组的无屏调制对比度的比值来确定所述透明显示屏对应第n图案组的清晰度Cn,所述清晰度Cn与所述比值成线性比例关系:
    Cn=k C’(n)/C(n),
    其中,C(n)为第n图案组的无屏调制对比度,C’(n)为第n图案组的有屏调制对比度,n为大于0的整数,k为正数。
  20. 根据权利要求19所述的透明显示屏清晰度的检测装置,其中,所述评估装置还配置来根据每一图案组的条纹频率和每一图案组的清晰度来获得所述透明显示屏的清晰度随条纹频率变化的曲线,以获得所述透明显示屏在不同条纹频率下的清晰度,第n图案组的条纹频率为单位长度内成对的第n图案组中所述第一区域和所述第二区域的数目。
  21. 根据权利要求17-20任一项所述的透明显示屏清晰度的检测装置,其中,在所述第一方向上所述多个图案组的宽度逐渐变化。
  22. 根据权利要求17-20任一项所述的透明显示屏清晰度的检测装置,其中,所述多个图案组在所述第一方向上的宽度呈等差数列逐渐变化。
  23. 根据权利要求22所述的透明显示屏清晰度的检测装置,其中,每一图案组中的所述第一区域和所述第二区域在所述第一方向上具有相同的宽度。
  24. 根据权利要求22所述的透明显示屏清晰度的检测装置,其中,每一图案组中的所述第一区域和所述第二区域在所述第一方向上具有不同的宽度。
  25. 根据权利要求24所述的透明显示屏清晰度的检测装置,其中,所述多个第一区域在所述第一方向上宽度变化的趋势和所述多个第二区域在所述第一方向上宽度变化的趋势相同。
  26. 根据权利要求17-20任一项所述的透明显示屏清晰度的检测装置,其中,所述第一颜色与所述第二颜色的灰阶不同。
  27. 根据权利要求17-20任一项所述的透明显示屏清晰度的检测装置,其中,所述第一颜色为黑色、红色、蓝色或者绿色,所述第二颜色为白色、黄色或粉色。
  28. 根据权利要求17-20任一项所述的透明显示屏清晰度的检测装置,其中,所述透明显示屏的灰阶为0-255。
  29. 根据权利要求17-20任一项所述的透明显示屏清晰度的检测装置,其中,所述参考图案片具有所述第一区域和所述第二区域为嵌套的环形的靶形图案、所述第一区域和所述第二区域为沿第二方向延伸的条状图案、或所述第一区域和所述第二区域为在第一方向和第二方向上均交替设置的棋盘格图案或格栅图案,其中,所述第二方向垂直于所述第一方向。
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