CN108181094A - A kind of head-up display Character Intensity and line width measuring method - Google Patents
A kind of head-up display Character Intensity and line width measuring method Download PDFInfo
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- CN108181094A CN108181094A CN201711415878.1A CN201711415878A CN108181094A CN 108181094 A CN108181094 A CN 108181094A CN 201711415878 A CN201711415878 A CN 201711415878A CN 108181094 A CN108181094 A CN 108181094A
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- line width
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000003384 imaging method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 102100033402 Angiopoietin-4 Human genes 0.000 description 4
- 101000955962 Homo sapiens Vacuolar protein sorting-associated protein 51 homolog Proteins 0.000 description 4
- 102100034594 Angiopoietin-1 Human genes 0.000 description 2
- 102100034608 Angiopoietin-2 Human genes 0.000 description 2
- 101100108860 Homo sapiens ANGPT4 gene Proteins 0.000 description 2
- 101000924552 Homo sapiens Angiopoietin-1 Proteins 0.000 description 2
- 101000924533 Homo sapiens Angiopoietin-2 Proteins 0.000 description 2
- 101000693093 Homo sapiens Angiopoietin-related protein 1 Proteins 0.000 description 2
- 101001056901 Homo sapiens Delta(14)-sterol reductase TM7SF2 Proteins 0.000 description 2
- 101100216078 Mus musculus Ang4 gene Proteins 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The present invention proposes a kind of head-up display Character Intensity and line width measuring method, luminance meter is combined with six-freedom motion platform, luminance meter is driven to rotate using orientation or pitching rotary, the vertical or horizontal Luminance Distribution for being tested head-up display character is acquired, is recorded and data processing, luminance mean value in half intensity line width and 60% line width is calculated, obtains the line width and brightness value of the head-up display character for imaging in infinite point.The brightness of head-up display and line width data can fast and automatically, accurately be obtained using the present invention, available for being tested by the various head-up display Character Intensity of image source, line width of CRT, solve head-up display line width can not accurate test problem, and substantially increase convenience and the accuracy of brightness measurement.
Description
Technical field
The invention belongs to collimating display photometric measurement field, be related to it is a kind of it is quick carry out head-up display Character Intensity,
The method of line width test.
Background technology
Traditional head-up display Character Intensity is measured using PR-1980B spectrophotometers, using point-to-point measurement method,
Its test operating procedure is very loaded down with trivial details, and measurement efficiency is low and the easy tested person proficiency of test result influences；Line width test uses
1980B angle scanning attachmentes need half intensity point and line width on angle/brightness curve that hand dipping prints on paper,
Measuring accuracy and accuracy are difficult to ensure that.
Invention content
Of the existing technology to solve the problems, such as, the present invention proposes a kind of head-up display Character Intensity and wire width measuring side
Method combines luminance meter with six-freedom motion platform, luminance meter is driven to rotate using orientation or pitching rotary, to tested flat
Vertical or horizontal Luminance Distribution depending on display character is acquired, records and data processing, calculates half intensity line width and 60%
Luminance mean value in line width obtains the line width and brightness value of the head-up display character for imaging in infinite point.
The technical scheme is that：
A kind of head-up display Character Intensity and line width measuring method, it is characterised in that：Include the following steps：
Step 1：Luminance meter is placed on six-freedom motion platform；The orientation of the six-freedom motion platform, pitching, horizontal stroke
The rotary shaft in three directions of rolling is intersected in a bit, and the entrance pupil center of luminance meter and six-freedom motion platform orientation, pitching, roll
Three direction rotary shaft joints overlap；The entrance pupil center of luminance meter is in tested head-up display and designs at eye position；
Step 2：Luminance meter is rotated in orientation and pitching both direction respectively using six-freedom motion platform, according to setting
Angle step respectively to show that the vertical and horizontal symbol brightness of symbol is acquired on tested head-up display, longitudinal direction with
In transverse direction, the measurement data set being made of angle and brightness value one-to-one correspondence is respectively obtained；
Step 3：Measurement data set corresponding for vertical and horizontal obtains symbol line width and bright using following steps
Degree：
Step 3.1：Data processing is carried out to measurement data set, fitting obtains brightness-angular distribution curve L ' (θ)；It calculates
Obtain the corresponding angle value of maximum brightness and maximum brightness Lmax=L0', it is obtained by solving brightness-angular distribution curvilinear equation
50% brightness L ' (θ1)=L ' (θ2)=L0Corresponding angle, θ at '/21And θ2；It obtains half intensity character and shows line width
LineWidth=θ2-θ1；
Step 3.2：Line width is shown according to the half intensity character that step 3.1 obtains, is calculated in 60% line width of center
Two rim angle angle value θ at place3And θ4；According to formula
Symbol brightness L ' is calculated.
Advantageous effect
Luminance meter coordinates micro-lens using CCD, its single pixel test subtended angle can be made to meet character no more than 0.1mrad
Brightness, angular distribution acquisition, record on character line are required when line width is tested.The present invention shows special according to head-up display character
Property, it selects the camera lens demarcated of luminance meter and controls its aperture, exposure parameter, meet its entrance pupil, single pixel measurement subtended angle flat
Depending on display line width, the test request of brightness, it is ensured that Luminance Distribution is tested and character line width, the accuracy of brightness calculation value.
Using the present invention can fast and automatically, accurately obtain the brightness of head-up display and line width data, available for
CRT is the various head-up display Character Intensity of image source, line width test, solves head-up display line width and can not accurately test and asks
Topic, and substantially increase convenience and the accuracy of brightness measurement.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains significantly or is recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Significantly and it is readily appreciated that, wherein：
Fig. 1 is technical solution of the present invention schematic diagram；
Fig. 2 is the measuring principle schematic diagram of the present invention；
The measuring route that Fig. 3 is the present invention defines schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to for explaining the present invention, and
It is not considered as limiting the invention.
As shown in Figure 1, head-up display 4 to be measured is placed on lifting displacement platform 3, product to be measured can control to carry out high-low-position
Put movement.Luminance meter 6 is placed six degree of freedom five and is tieed up on sports platform 5, including control bit moving stage around and roll, orientation and
Pitching rotary.Luminance meter 6 connect the brightness that character is shown on acquisition test product by data line with computer.
Orientation, pitching, the rotary shaft of three turntables of roll are orthogonal and cross on one point, the entrance pupil of luminance meter during installation
Center is overlapped with the point.Ensure the entrance pupil center of luminance meter in test process always at head-up display design eye position, not with
Orientation, pitching, the adjustment of roll angle and change.
Adopting for line character line Luminance Distribution of going forward side by side is moved with computer 2,1 control azimuth of electric displacement platform control cabinet and pitching rotary
Collection, data processing and preservation are realized and show line width, the measurement function of brightness to character.
Fig. 2 is the measuring principle schematic diagram of the present invention.
Line width test is using scanning slit method.The Luminance Distribution of line cross-directional is shown to head-up display using luminance meter
Sampled, obtain corresponding sample magnitudes of the one group of brightness L as shown in Figure 2 with angle, θ, to measurement data carry out data processing with
Operation, fitting obtain brightness-angular distribution curve L ' (θ)；The corresponding angle value of maximum brightness and maximum brightness L is calculatedmax
=L0', obtain 50% brightness L ' (θ by solving brightness-angular distribution curvilinear equation1)=L ' (θ2)=L0Corresponding angle at '/2
Spend θ1And θ2；It obtains half intensity character and shows line width LineWidth=θ2-θ1；Line is shown further according to obtained half intensity character
Two rim angle angle value θ at 60% line width of center are calculated in width3And θ4；According to formula
Symbol brightness L ' is calculated.
The measuring route that Fig. 3 is the present invention defines schematic diagram.During brightness measurement, the number for surveying character line need to be treated
Amount, measurement range, measurement angle interval etc. are set：
NUM, detANG, ANGX, ANGY
ANG1, ANG2, ANG3, ANG4
ANG1n, ANG2n, ANG3n, ANG4n
Wherein NUM is the quantity of brightness measurement position, and detANG is the angle interval during brightness measurement, and ANGX is to survey
The measurement range in orientation during examination, ANGY are the measurement ranges of pitching in test process, and ANG1 is the side of brightness measurement position
Parallactic angle degree, ANG2 are the pitch angle of brightness measurement position, and ANG3 is the deviation angle of the measurement position prescription position, and ANG4 is is somebody's turn to do
Measure the deviation angle of pitching at position, unit degree of being.The measuring route is specifically wanted before measuring according to test product
Setting is asked, when a measurement is started, program obtains the path of measurement by way of file reading.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, substitutions and variations to the above described embodiments within the scope of the invention.
Claims (1)
1. a kind of head-up display Character Intensity and line width measuring method, it is characterised in that：Include the following steps：
Step 1：Luminance meter is placed on six-freedom motion platform；The orientation of the six-freedom motion platform, pitching, roll three
The rotary shaft in a direction is intersected in a bit, and the entrance pupil center of luminance meter and six-freedom motion platform orientation, pitching, roll three
Direction rotary shaft joint overlaps；The entrance pupil center of luminance meter is in tested head-up display and designs at eye position；
Step 2：Luminance meter is rotated in orientation and pitching both direction respectively using six-freedom motion platform, according to the angle of setting
Degree step-length on tested head-up display respectively to showing that the vertical and horizontal symbol brightness of symbol is acquired, in vertical and horizontal
On, respectively obtain the measurement data set being made of angle and brightness value one-to-one correspondence；
Step 3：Measurement data set corresponding for vertical and horizontal, obtains symbol line width and brightness using following steps：
Step 3.1：Data processing is carried out to measurement data set, fitting obtains brightness-angular distribution curve L ' (θ)；It is calculated
The corresponding angle value of maximum brightness and maximum brightness Lmax=L0', obtain 50% by solving brightness-angular distribution curvilinear equation
Brightness L ' (θ1)=L ' (θ2)=L0Corresponding angle, θ at '/21And θ2；It obtains half intensity character and shows line width
LineWidth=θ2-θ1；
Step 3.2：Line width is shown according to the half intensity character that step 3.1 obtains, is calculated at 60% line width of center
Two rim angle angle value θ3And θ4；According to formula
Symbol brightness L ' is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711415878.1A CN108181094A (en) | 2017-12-25 | 2017-12-25 | A kind of head-up display Character Intensity and line width measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711415878.1A CN108181094A (en) | 2017-12-25 | 2017-12-25 | A kind of head-up display Character Intensity and line width measuring method |
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| Publication Number | Publication Date |
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| CN108181094A true CN108181094A (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711415878.1A Pending CN108181094A (en) | 2017-12-25 | 2017-12-25 | A kind of head-up display Character Intensity and line width measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896281A (en) * | 2018-08-01 | 2018-11-27 | 上海玮舟微电子科技有限公司 | Vision area method for measuring width and system based on Hud system |
| CN110779687A (en) * | 2019-10-17 | 2020-02-11 | 中国航空工业集团公司洛阳电光设备研究所 | Device and method for measuring character jitter in vibration environment of head-up display |
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|---|---|---|---|---|
| US6987787B1 (en) * | 2004-06-28 | 2006-01-17 | Rockwell Collins | LED brightness control system for a wide-range of luminance control |
| CN1804545A (en) * | 2005-01-11 | 2006-07-19 | 株式会社日立国际电气 | Line width measuring method |
| WO2014050497A1 (en) * | 2012-09-26 | 2014-04-03 | 日本精機株式会社 | Display device |
| CN105577999A (en) * | 2014-11-04 | 2016-05-11 | 现代自动车株式会社 | Head-up display apparatus and controlling method thereof |
| CN205300498U (en) * | 2015-12-05 | 2016-06-08 | 中国航空工业集团公司洛阳电光设备研究所 | Aviation machine carries head -up display and combination mirror position monitoring device thereof |
| CN106596061A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业集团公司洛阳电光设备研究所 | General test platform for optical performance of head-up display |
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2017
- 2017-12-25 CN CN201711415878.1A patent/CN108181094A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6987787B1 (en) * | 2004-06-28 | 2006-01-17 | Rockwell Collins | LED brightness control system for a wide-range of luminance control |
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| WO2014050497A1 (en) * | 2012-09-26 | 2014-04-03 | 日本精機株式会社 | Display device |
| CN105577999A (en) * | 2014-11-04 | 2016-05-11 | 现代自动车株式会社 | Head-up display apparatus and controlling method thereof |
| CN205300498U (en) * | 2015-12-05 | 2016-06-08 | 中国航空工业集团公司洛阳电光设备研究所 | Aviation machine carries head -up display and combination mirror position monitoring device thereof |
| CN106596061A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业集团公司洛阳电光设备研究所 | General test platform for optical performance of head-up display |
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| 谢建英等: "平视显示器字符亮度及线宽测量系统", 《传感技术学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896281A (en) * | 2018-08-01 | 2018-11-27 | 上海玮舟微电子科技有限公司 | Vision area method for measuring width and system based on Hud system |
| CN108896281B (en) * | 2018-08-01 | 2020-06-12 | 张家港康得新光电材料有限公司 | Viewing zone width measuring method and system based on Hud system |
| CN110779687A (en) * | 2019-10-17 | 2020-02-11 | 中国航空工业集团公司洛阳电光设备研究所 | Device and method for measuring character jitter in vibration environment of head-up display |
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Application publication date: 20180619 |