CN203069356U - Fibre faceplate limiting resolution test instrument based on shade elimination - Google Patents
Fibre faceplate limiting resolution test instrument based on shade elimination Download PDFInfo
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- CN203069356U CN203069356U CN 201320033067 CN201320033067U CN203069356U CN 203069356 U CN203069356 U CN 203069356U CN 201320033067 CN201320033067 CN 201320033067 CN 201320033067 U CN201320033067 U CN 201320033067U CN 203069356 U CN203069356 U CN 203069356U
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- fibre faceplate
- shadow
- resolution
- limiting resolution
- integrating sphere
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Abstract
The utility model discloses a fibre faceplate limiting resolution test instrument based on shade elimination. The fibre faceplate limiting resolution test instrument comprises a standard light source (1) and its steady current source (2), a collecting lens (3), an integrating sphere (4) and its mobile mechanism, a resolution target (5) and a CCD data acquisition and microcomputer processing system (8), wherein the resolution target (5) is arranged on an uniform diffusion outlet of the integrating sphere (4). The fibre faceplate limiting resolution test instrument provided by the utility model fills the gap of fibre faceplate limiting resolution test technologies at present. By the utilization of the resolution target to eliminate shade points, limiting resolution of each part of a fibre faceplate is accurately measured by a system. Thus, resolution distribution of each part of different fibre faceplates can be provided, and shade coordinate of the fibre faceplate can also be located.
Description
Technical field
The utility model relates to the optical instrument of the limiting resolution of a kind of measuring optical fiber panel, optical lens, is specifically related to a kind of proving installation of the resolution based on the shadow compensation principle, belongs to optical field.
Background technology
Fibre faceplate has the optical efficiency of biography height, and the interstage coupling loss is little, passes as clear, true, has characteristics such as zero thickness.Be widely used in various cathode-ray tube (CRT)s, pick-up tube, CCD coupling and other need transmit in the instrument and equipment of image.Fibre faceplate is the user terminal product of realizing the fiber to the desk solution, and the inner space is reasonable in design.Thereby move towards some families and workspace gradually.Good and bad and this panel resolution rate of fibre faceplate are undivided, and therefore the parameter to its limiting resolution has also proposed the test needs.Because the influence (as infrared response, temperature etc.) of fibre faceplate various uncontrollable factors in actual manufacture process, fibre faceplate can produce the flaw point of some, be referred to as shadow, therefore when the measuring optical fiber panel resolution rate, must find out these shadow points.The domestic research of also not carrying out fibre faceplate shadow detection method in a deep going way at present, and the technology of the limiting resolution of system testing fibre faceplate various piece is almost nil.And have a kind of crying to utilize optimum operator Canny operator to realize the detection of shadow for the detection of shadow in the detection fiber panel.But there is following problem in this scheme:
1) the Canny operator is to go near practical problems with the method for mathematical simulation, and its bearing accuracy and width can't be described intuitively.
2) it is poor that the call statement of Canny operator contains the Gaussian filter parameter and standard, the ratio of low threshold value and high threshold, and high threshold accounts for the ratio of total number of image pixels, and Several Parameters not only can't uniquely be determined, but also is had certain human factor.
3) not only have additive noise in the resolution image, also exist multiplicative noise, the Canny operator can't solve multiplicative noise.
The utility model content
In order to solve the above-mentioned technical matters that exists in the prior art, the utility model provides a kind of fibre faceplate limiting resolution testing tool of rejecting based on shadow, comprise: standard sources and constant-current source thereof, condenser, integrating sphere and travel mechanism thereof, resolution target and ccd data collection and microprocessor system, described resolution target are arranged in the even diffusion outlet of described integrating sphere.
Further, described standard sources is bromine tungsten filament lamp, and constant-current source is direct supply.
Further, described condenser is quartz condensing-lens.
Further, the distance of the described condenser of described standard sources distance is less than the focal length of condenser.
Further, described integrating sphere is the hollow ball that inside scribbles the whitewash of diffuse.
Further, described travel mechanism is the metal slide unit that connects together with described integrating sphere, and its periphery indicates scale.
Further, the testing fiber panel arranges between the even diffusion outlet of described resolution target and described integrating sphere.
Further, also comprise the microscopic examination system, this microscopic examination system has the CCD interface, and its object lens are aimed at described testing fiber panel.
Further, also comprise Z axle travel mechanism.
Fibre faceplate limiting resolution testing tool of rejecting based on shadow of the present utility model replenishes current blank to fibre faceplate limiting resolution measuring technology, utilize a kind of resolution target to reject the limiting resolution that shadow point comes accurate systematic survey fibre faceplate various piece, the resolution distribution of different fiber panel various piece can be provided, the shadow coordinate that fibre faceplate exists can also be oriented.
Compared with prior art, the beneficial effects of the utility model are as follows:
1) directly judge the ultimate resolution of fibre faceplate zones of different by micro-Visualization system, more directly perceived than traditional method, operate also simple relatively;
2) resolution target is rejected shadow, has solved the indeterminable problem of fibre faceplate resolution;
3) provide the measurement of the limiting resolution of fibre faceplate different piece, can provide the shadow position of panel accurately.
Description of drawings
Fig. 1 is the structural representation of fibre faceplate limiting resolution testing tool of rejecting based on shadow of the present utility model;
Fig. 2 is the sectional view of resolution target.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, fibre faceplate limiting resolution testing tool of rejecting based on shadow of the present utility model comprises standard sources 1 and constant-current source 2 thereof, condenser 3, integrating sphere 4 and travel mechanism thereof, resolution target 5, microscopic examination system 6 and Z axle travel mechanism 7, ccd data collection and microprocessor system 8 are formed.
Described standard sources 1 and constant-current source 2 parts thereof are the light-source system of a kind of bromine tungsten filament lamp and the very high direct supply of precision, make light source output light intensity and colour temperature stable.This standard sources 1 must be isolated with external light source, therefore must carry out in the camera bellows at a certain temperature.
Described condenser 3 is quartz condensing-lens, and its quartzy purity is higher, is difficult for influencing the refraction angle of light.It is from standard sources 1 one fixed range settings, and this distance is less than the focal length of condenser 3, and light source along the projection of optical axis direction just in condenser 3 in the heart.
Described integrating sphere 4 is that inside scribbles the optionally hollow ball of the whitewash of (evenly) diffuse of no wavelength, and integrating sphere has two compensating ports, and one of them is condenser 3 output light entrances, and another is even diffusion outlet.Integrating sphere 4 is arranged in the travel mechanism, and travel mechanism is the metal slide unit that tightly connects together with integrating sphere, and its periphery all indicates scale, and integrating sphere 4 can all around be moved in X-Y plane smoothly.
Testing fiber panel 9 and resolution target 5 are close together, and wherein resolution target 5 is standard resolution targets, and its resolution strip width is even, and the light and shade contrast is more than 90%.
Described microscopic examination system 6 is a kind of optical microscope, has the CCD interface in this microscope, can pass through MICROCOMPUTER PROCESSING.Microscopical object lens are aimed at testing fiber panel 9.Described Z axle travel mechanism 7 is a kind of peripheral servicing unit of adjusting the microscope focal length.
Described ccd data collection and microprocessor system 8 comprise ccd image capture card and microcomputer platform, and the ccd image capture card is positioned at microscopical interface junction, can transfer the analog quantity of viewed picture to digital quantity.Microcomputer can carry out overall treatment to the data that transmit, as operations such as shadow location, parameter setting, drawing image, printing reports.
Light path of the present utility model is that standard sources 1 is sent monochromatic light through condenser 3, inject a compensating port of integrating sphere 4 then, diffuse reflection takes place and penetrates from another compensating port of integrating sphere in incident light in integrating sphere afterwards, testing fiber panel 9 is crossed in transmission again, again from resolution target 5 to microcobjective, be transmitted into eyepiece by microcobjective, enter people's eyeball at last again.
As shown in Figure 2, at any time, the electromotive force of resolution target 5 and Z axle are irrelevant, and can turn to two-dimensional problems and calculate, so the interior current potential of any arbitrarily of target
Must be determined by two-dimentional Laplace's equation and corresponding boundary condition:
；
Wherein
Be the thickness of resolution target 5,
For the target surface potential distributes,
For target is pressed.Because
Can have
Satisfying a two-dimentional Laplce side linear superposition that has a homogeneous boundary condition respectively can derive its final expression formula and be:
Wherein
Be respectively
The derivation coefficient,
Be hyperbolic sine function, in addition
, C is the contrast of target, I is current photocurrent,
Be the reference current of target, in order to keep higher precision, adopt contrast greater than 90% resolution target, can ignore the influence that its charge leakage causes this moment.This place's electromotive force is zero when there is shadow point in this place, so the coordinate that this method can unique definite x, y.With the Z coordinate of adjusting microcobjective manually or automatically, until can observe by microscope ocular clearly as, microcobjective amplifies local panel pattern, micro-eyepiece is directly observed for human eye.Simultaneously, have the CCD interface in the microscopic examination system, be equipped with the simulated data that the CCD capture card is gathered image, calculate the required result of output through MICROCOMPUTER PROCESSING.
Actual conditions can have two kinds of ways according to the parameter request of light panel resolution:
1) changes micro-enlargement factor eyepiece (10X, 16X etc.) and achromatic eyepiece (5X, 10X, 40X etc.), observe by micro-eyepiece, directly judge the resolving power of fibre faceplate zones of different;
2) as providing quantitative data image, the CCD interface can be connected with peripheral computer equipment.Form by ccd data collection, computing output aggregation of data parameter.
Claims (8)
1. fibre faceplate limiting resolution testing tool of rejecting based on shadow, comprise: standard sources (1) and constant-current source (2) thereof, condenser (3), integrating sphere (4) and travel mechanism thereof, resolution target (5), with ccd data collection and microprocessor system (8), it is characterized in that: described resolution target (5) is arranged in the even diffusion outlet of described integrating sphere (4).
2. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 1, it is characterized in that: described standard sources (1) is bromine tungsten filament lamp, and constant-current source (2) is direct supply.
3. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 1, it is characterized in that: the distance of described standard sources (1) the described condenser of distance (3) is less than the focal length of condenser (3).
4. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 1, it is characterized in that: described integrating sphere (4) is the hollow ball that inside is coated with the whitewash of diffuse.
5. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 1, it is characterized in that: described travel mechanism is the metal slide unit that connects together with described integrating sphere (4), and its periphery indicates scale.
6. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 1 is characterized in that: between the even diffusion that testing fiber panel (9) arranges described resolution target (5) and described integrating sphere (4) exports.
7. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 6, it is characterized in that: also comprise microscopic examination system (6), this microscopic examination system (6) has the CCD interface, and its object lens are aimed at described testing fiber panel (9).
8. fibre faceplate limiting resolution testing tool of rejecting based on shadow as claimed in claim 7 is characterized in that: also comprise Z axle travel mechanism (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033067 CN203069356U (en) | 2013-01-22 | 2013-01-22 | Fibre faceplate limiting resolution test instrument based on shade elimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033067 CN203069356U (en) | 2013-01-22 | 2013-01-22 | Fibre faceplate limiting resolution test instrument based on shade elimination |
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| Publication Number | Publication Date |
|---|---|
| CN203069356U true CN203069356U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320033067 Expired - Fee Related CN203069356U (en) | 2013-01-22 | 2013-01-22 | Fibre faceplate limiting resolution test instrument based on shade elimination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105285A (en) * | 2013-01-22 | 2013-05-15 | 中国计量学院 | Shadow-rejection based test method and test instrument for optical fiber panel limiting resolution |
-
2013
- 2013-01-22 CN CN 201320033067 patent/CN203069356U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105285A (en) * | 2013-01-22 | 2013-05-15 | 中国计量学院 | Shadow-rejection based test method and test instrument for optical fiber panel limiting resolution |
| CN103105285B (en) * | 2013-01-22 | 2015-03-18 | 中国计量学院 | Shadow-rejection based test method and test instrument for optical fiber panel limiting resolution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU YAXIONG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHINA JILIANG UNIVERSITY Effective date: 20141229 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141229 Address after: 310018 room 12, building 1201, Yifu science and Technology Institute, modern science and Technology Institute of China Jiliang University, Hangzhou economic and Technological Development Zone, Zhejiang, China Patentee after: Hangzhou Asia Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310018 Xiasha Higher Education Park source Street No. 258 Patentee before: China Jiliang University |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20170122 |