CN204269342U - A kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount - Google Patents
A kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount Download PDFInfo
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- CN204269342U CN204269342U CN201420662596.7U CN201420662596U CN204269342U CN 204269342 U CN204269342 U CN 204269342U CN 201420662596 U CN201420662596 U CN 201420662596U CN 204269342 U CN204269342 U CN 204269342U
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Abstract
The utility model relates to a kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount, comprise micro-grid scale plate, imaging lens group, biography as lens combination, CCD camera, computing machine, imaging lens group and biography can place optical fiber image transmission beam to be measured as between lens combination, the nearly directional light that the lighting source placed before micro-grid scale plate sends is radiated on micro-grid scale plate, and incide as lens combination picture CCD camera being formed micro-grid scale plate, imaging in computer recording CCD camera by imaging lens group and biography.Micro-grid scale plate is provided with in the utility model proving installation, not pass through original grating image formed by optical fiber image transmission beam micro-grid scale plate and to pass through grating image formed by the micro-grid scale plate of optical fiber image transmission beam for foundation, the position offset of grating image is calculated according to front and back two image procossing of computer recording, there is proving installation simple, measuring accuracy is high, the feature that measuring speed is fast.
Description
Technical field
The utility model relates to a kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount, belongs to fibre optic image transmission technical field.
Background technology
Optical fiber image transmission beam is lined up regularly by the light transmitting fiber of many certain lengths and certain diameter, optical fiber two ends are by the set of close relation arrangement one to one bunchy, make the fibre-optic input and output side of every root at geometrically one_to_one corresponding, each root light transmitting fiber transmits a pixel, thus plays the effect of biography picture.Optical fiber image transmission beam is a kind of passive device of the transmitting image that can bend arbitrarily, compared with traditional optical imaging device, there is the image transfer that degree of freedom is large, lightweight, easily realize in complex space configuration, can strong electromagnetic, high temperature, have the environment of corrosion under the plurality of advantages such as to work, be applied to the fields such as medical science, industry, scientific research and military affairs.
In optical fiber image transmission beam process of manufacture, each pixel position of optical fiber image transmission beam both ends of the surface is difficult to the geometric position one_to_one corresponding of realizing ideal, and namely there is a certain amount of deviation.Require the field of image precision transmission at some, the pixel side-play amount of optical fiber image transmission beam both ends of the surface can produce certain influence to image transmitting quality.For accurate evaluation influence degree, be beneficial to take suitable indemnifying measure, need to measure the pixel side-play amount of optical fiber image transmission beam both ends of the surface.
At present the measuring equipment of optical fiber image transmission beam end face pixel side-play amount is focused mostly in the detection to optical aberration.Have the common instrument that optical aberration detects: Knife-edge Shadow instrument, interferometer and Hartmann wave front sensor.Knife-edge Shadow instrument is a kind of conventional aberration detecting instrument, the echo shape that Knife-edge Shadow instrument can arrive according to the observation, determine direction and the position of corrugated local error, this instrumental sensitivity is very high, but need experienced tester to observe echo near the edge of a knife to determine aberration, the measurement result of this instrument is relevant with the subjective factor of tester to a great extent, detects degree of accuracy lower, only can realize qualitative detection.Laser Digital Wavefront Interferometer is the optical instrument utilizing principle of interference to come detecting optical element or optical system wavefront aberration, this instrument accuracy of detection is high, but need to make interferometer and tested optical element or optical system be on good vibration-isolating platform when detecting, this requires very harsh to testing environment, in addition, interferometer is heavy and expensive.Hartmann wave front sensor is a kind of wavefront testing tool being measured as basis with wavefront slope, Hartmann wave front sensor in use, the plane wave front needing beam quality good or spherical wave front are as incident wavefront, and the adjustment more complicated between incident wavefront and Hartmann wave front sensor, whole structure of the detecting device is complicated and expensive.
Utility model content
The purpose of this utility model is to provide a kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount, for solving the technical matters of the measuring equipment complicated operation of pixel side-play amount in prior art.
For achieving the above object, the utility model adopts following technical scheme:
A kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount, comprise micro-grid scale plate, imaging lens group, biography as lens combination, CCD camera, computing machine, lighting source is placed with before micro-grid scale plate, imaging lens group and biography can place optical fiber image transmission beam to be measured as between lens combination, the nearly directional light that lighting source sends to be radiated on micro-grid scale plate and by imaging lens group with pass and incide as lens combination picture CCD camera being formed micro-grid scale plate, described computing machine is connected with CCD camera, imaging in record CCD camera.
The beneficial effects of the utility model are: be provided with micro-grid scale plate in the utility model proving installation, not pass through original grating image formed by optical fiber image transmission beam micro-grid scale plate and to pass through grating image formed by the micro-grid scale plate of optical fiber image transmission beam for foundation, front and back two image according to computer recording is calculated by image procossing, and then the position offset of grating image formed by after drawing original grating image and adding optical fiber image transmission beam, there is measuring accuracy high, proving installation is simple, flexibly easy to adjust, the feature that measuring speed is fast.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is explained in detail.
As shown in Figure 1, the measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount of the present utility model, this device comprises lighting source 1, micro-grid scale plate 2, imaging lens group 3, passes as lens combination 5, CCD camera 6, computing machine 7; Imaging lens group 3 and biography can place testing fiber coherent fiber bundle as between lens combination 5, micro-grid scale plate 2 is placed with between imaging lens group 3 and lighting source 1, CCD camera 6 is placed on and passes as lens combination 5 side, computing machine 7 is connected with CCD camera 6, places micro-grid scale plate imaging in CCD camera before and after testing fiber coherent fiber bundle for recording.
When utilizing the utility model to carry out the measurement of optical fiber image transmission beam both ends of the surface pixel side-play amount, its concrete steps are as follows:
1, imaging lens group 3 and biography do not place optical fiber image transmission beam as between lens combination 5, the nearly directional light that lighting source 1 sends is radiated on micro-grid scale plate 2, the picture of micro-grid scale plate 2 incides imaging on the photosurface of CCD camera 6 by imaging lens group 3 and biography as lens combination 5, utilizes computing machine 7 to record micro-grid scale plate 2 formed original grating image in CCD camera 6;
2, imaging lens group 3 and biography place optical fiber image transmission beam 4 as between lens combination 5, the picture of micro-grid scale plate 2 is coupled to the incidence end of testing fiber coherent fiber bundle by imaging lens group, exit end is transferred to through optical fiber image transmission beam, emergent ray through passing imaging on the photosurface inciding CCD camera 6 as lens combination 5, and is connected computing machine 7 record in CCD camera 6;
3, calculate original grating image by image procossing and add the position offset between the grating image after testing fiber coherent fiber bundle, going out the pixel side-play amount of testing fiber coherent fiber bundle 4 both ends of the surface according to the sizecalculation of simple optical fiber in the magnification of imaging lens group 3, the physical size of micro-grid scale plate 2 and testing fiber coherent fiber bundle 4.
The utility model is not to pass through original grating image formed by optical fiber image transmission beam micro-grid scale plate and to pass through grating image formed by the micro-grid scale plate of optical fiber image transmission beam for foundation, front and back two image according to computer recording is calculated by image procossing, position offset after calculating original grating image and adding optical fiber image transmission beam 4 between formed grating image, again according to the magnification of imaging lens group 3, in micro-grid scale plate 2 physical size and testing fiber coherent fiber bundle 4, the Size calculation of simple optical fiber goes out the pixel side-play amount of testing fiber coherent fiber bundle 4 both ends of the surface, there is measuring accuracy high, proving installation is simple, flexibly easy to adjust, the feature that measuring speed is fast.
Claims (1)
1. the measurement mechanism of an optical fiber image transmission beam both ends of the surface pixel side-play amount, it is characterized in that: comprise micro-grid scale plate, imaging lens group, pass as lens combination, CCD camera, computing machine, lighting source is placed with before micro-grid scale plate, imaging lens group and biography can place optical fiber image transmission beam to be measured as between lens combination, the nearly directional light that lighting source sends to be radiated on micro-grid scale plate and by imaging lens group with pass and incide as lens combination picture CCD camera being formed micro-grid scale plate, described computing machine is connected with CCD camera, imaging in record CCD camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420662596.7U CN204269342U (en) | 2014-11-07 | 2014-11-07 | A kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount |
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| CN201420662596.7U CN204269342U (en) | 2014-11-07 | 2014-11-07 | A kind of measurement mechanism of optical fiber image transmission beam both ends of the surface pixel side-play amount |
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| CN204269342U true CN204269342U (en) | 2015-04-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359654A (en) * | 2014-11-07 | 2015-02-18 | 中国航空工业集团公司洛阳电光设备研究所 | Device and method for measuring offset of picture elements of two end faces of optical fiber image transmitting beam |
| CN106053026A (en) * | 2016-07-06 | 2016-10-26 | 中国科学院西安光学精密机械研究所 | Optical efficiency testing device and optical efficiency testing method for infrared fiber image-transmitting bundle |
| CN108303236A (en) * | 2017-01-11 | 2018-07-20 | 福建省莆田市中涵机动力有限公司 | Laser scanning head installs calibration check system |
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2014
- 2014-11-07 CN CN201420662596.7U patent/CN204269342U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359654A (en) * | 2014-11-07 | 2015-02-18 | 中国航空工业集团公司洛阳电光设备研究所 | Device and method for measuring offset of picture elements of two end faces of optical fiber image transmitting beam |
| CN106053026A (en) * | 2016-07-06 | 2016-10-26 | 中国科学院西安光学精密机械研究所 | Optical efficiency testing device and optical efficiency testing method for infrared fiber image-transmitting bundle |
| CN108303236A (en) * | 2017-01-11 | 2018-07-20 | 福建省莆田市中涵机动力有限公司 | Laser scanning head installs calibration check system |
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