CN107561715A - Optical signal dodging device and its method - Google Patents
Optical signal dodging device and its method Download PDFInfo
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- CN107561715A CN107561715A CN201610510444.9A CN201610510444A CN107561715A CN 107561715 A CN107561715 A CN 107561715A CN 201610510444 A CN201610510444 A CN 201610510444A CN 107561715 A CN107561715 A CN 107561715A
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- optical signal
- light
- mirror piece
- light intensity
- smoothing mirror
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Abstract
The invention provides a kind of even light device of optical signal and its method, optical signal is transmitted to a smoothing mirror piece by light conduction cell, the smoothing mirror piece can be by same position on the light collection of equal angular to pupil face, the one side of the smoothing mirror piece away from the light conduction cell is provided with an even smooth film, the even smooth film is used to modulate the optical signal, so that being improved by the uniformity of the optical signal of the smoothing mirror piece.
Description
Technical field
The present invention relates to optical field, more particularly to optical signal dodging device and its method.
Background technology
Optical signal transmission plays the role of extensive and important in field of machine vision optics automatic defect detection device.
In actual application scenarios, especially in defects detection application, everybody, which is intended to optical signal, has uniform far-field distribution, so as to
Higher uniformity is obtained in Kohler illumination mode.But in fact, due to the self-characteristic of light conduction cell and by light
The influence in source, the equalization of intensity of optical signal can not meet use demand at this stage.
At present, optical signal light-uniforming technology is broadly divided into two classes, and a kind of technology is optical fiber extruding (fiber squeezing),
Another kind of technology be optical fiber extend (fiber stretching), two kinds of technologies be all realized by modulated optical signal it is relatively uniform
Optical signal, the uniformity that the even light effect of both the above optical signal light-uniforming technology reaches is about 85%, but can not meet light
Learn uniformity higher and higher requirement of the equipment (such as optics automatic defect detection device) to optical signal.How optical signal is solved
Lack of uniformity the problem of be those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the present invention to provide optical signal dodging device and its method, solves the lack of uniformity of optical signal
Problem.
Optical signal dodging device provided by the invention, including：Light conduction cell and smoothing mirror piece；The light conduction cell is used
In transmission optical signal；The smoothing mirror piece is used for same position, the smoothing mirror on the light collection of equal angular to pupil face
Piece is arranged on the output end of the light conduction cell, and the one side of the smoothing mirror piece away from the light conduction cell is provided with an even light
Film, the even smooth film are used to modulate the optical signal.
Preferably, in the optical signal dodging device, the light conduction cell is optical fiber.
Preferably, in the optical signal dodging device, the even smooth film is by modulating the transmitance pair of the optical signal
The optical signal carries out even light.
Preferably, in the optical signal dodging device, the transmitance of the even smooth film obtains according to following method：Obtain
The light intensity data of the optical signal, the light intensity data is normalized, asks inverse to obtain light intensity the data after normalization
Function；Light spread function is obtained by the light diffusion zone size of the optical signal；The light intensity function and the light are spread
Function enters row interpolation using interpolation algorithm；Light intensity function after interpolation and light spread function are subjected to deconvolution, obtained described
Cross rate.
Preferably, in the optical signal dodging device, the light intensity data of the optical signal uses detector detection or soft
Part emulation obtains.
Preferably, in the optical signal dodging device, the smooth diffusion zone size is according to the optical signal from described
Smoothing mirror piece is obtained to the distance in angular spectrum face and the optical signal by the angular spectrum face numerical aperture after the smoothing mirror piece.
Preferably, in the optical signal dodging device, the interpolation algorithm is spline interpolation algorithms.
The present invention also provides a kind of optical signal even smooth method, including：An optical signal is provided, the optical signal passes through an even light
Eyeglass carries out even light, and the exiting surface of the smoothing mirror piece has an even smooth film, and the smoothing mirror piece converges the light of equal angular
Gather same position on pupil face, the even smooth film modulates the optical signal.
Preferably, in the even smooth method of the optical signal, the optical signal is transmitted by optical fiber.
Preferably, in the even smooth method of the optical signal, the even light is by modulating the transmitance of the optical signal to institute
State optical signal and carry out even light.
Preferably, in the even smooth method of the optical signal, the transmitance of the even smooth film obtains according to following method：Obtain
The light intensity data of the optical signal, the light intensity data is normalized, asks inverse to obtain light intensity the data after normalization
Function；Light spread function is obtained by the light diffusion zone size of the optical signal；The light intensity function and the light are spread
Function enters row interpolation using interpolation algorithm；Light intensity function after interpolation and light spread function are subjected to deconvolution, obtained described
Cross rate.
Preferably, in the even smooth method of the optical signal, the light intensity data of the optical signal uses detector detection or soft
Part emulation obtains.
Preferably, in the even smooth method of the optical signal, the smooth diffusion zone size is according to the optical signal from described
Smoothing mirror piece is obtained to the distance in angular spectrum face and the optical signal by the angular spectrum face numerical aperture after the smoothing mirror piece.
Preferably, in the even smooth method of the optical signal, the interpolation algorithm is spline interpolation algorithms.
In the even light device of optical signal provided by the invention and its method, it is even to one that optical signal is transmitted by light conduction cell
Light microscopic piece, the smoothing mirror piece can be by same positions on the light collection of equal angular to pupil face, and the smoothing mirror piece is away from institute
The one side for stating light conduction cell is provided with an even smooth film, and the even smooth film is used to modulate the optical signal, so that by described even
The uniformity of the optical signal of light microscopic piece is improved.
Brief description of the drawings
Fig. 1 is the structural representation of the even light device of optical signal of the embodiment of the present invention.
Embodiment
In order that objects, features and advantages of the present invention can be more obvious understandable, accompanying drawing is referred to.It should be clear that this explanation
Structure, ratio, size depicted in book institute accompanying drawings etc., only to coordinate the content disclosed in specification, for being familiar with this
The personage of technology understands and read, and is not limited to the enforceable qualifications of the present invention, therefore does not have technical essence meaning
Justice, the modification of any structure, the change of proportionate relationship or the adjustment of size, do not influenceing the effect of present invention can be generated and institute
Under the purpose that can reach, all should still it fall in the range of disclosed technology contents are obtained and can covered.As shown in figure 1, this
The even light device of optical signal provided is provided, including：Light conduction cell 10 and smoothing mirror piece 20；The light conduction cell 10 is used to pass
Optical signals；The smoothing mirror piece 20 is used for same position on the light collection of equal angular to pupil face, the smoothing mirror piece
20 are arranged on the output end of the light conduction cell 10, and one side of the smoothing mirror piece 20 away from the light conduction cell 10 is provided with
One even smooth film 30, the even smooth film 30 are used to modulate the optical signal.
Preferably, in the even light device of the optical signal, the light conduction cell 10 is optical fiber, and optical fiber is typically by glass
With plastics made of fiber, delivery means of the optical fiber as optical signal, transmission of the optical signal in optical fiber have low-down damage
Consumption.
Preferably, in the even light device of the optical signal, the even smooth film 30 is by modulating the transmitance of the optical signal
Even light is carried out to the optical signal.
Preferably, in the even light device of the optical signal, the transmitance of the even smooth film obtains according to following method：Obtain
The light intensity data of the optical signal, the light intensity data is normalized, such as carries out Returning to one for minimum value, after normalization
Data ask inverse to obtain light intensity function, ask inverse to obtain light intensity function the data after normalization；Pass through the optical signal
Light diffusion zone size obtains light spread function；The light intensity function and the smooth spread function are inserted using interpolation algorithm
Value, so as to meet compensation calculation accuracy requirement；Light intensity function after interpolation and light spread function are subjected to deconvolution, obtained described
Transmitance.
Preferably, in the even light device of the optical signal, the light intensity data of the optical signal uses detector detection or soft
Part emulation obtains.And just, the optical signal directly tested by detector in light conduction cell obtains the light intensity of optical signal；Or
Person, it is to determine due to usual optical signal, both the light intensity by optical signal data by Software simulation calculation optical signals.
Preferably, in the even light device of the optical signal, the smooth diffusion zone size is according to the optical signal from described
Smoothing mirror piece to angular spectrum face distance and the optical signal by angular spectrum face numerical aperture after the smoothing mirror piece (NA,
Numerical aperture) obtain.Angular spectrum face, which is optical signal, passes through the place face being gathered together again after smoothing mirror piece.
Preferably, in the optical signal dodging device, the interpolation algorithm is spline interpolation algorithms.
The even smooth method of optical signal provided by the invention, including：An optical signal is provided, the optical signal passes through a smoothing mirror piece
Even light is carried out, the exiting surface of the smoothing mirror piece has an even smooth film, and the smoothing mirror piece arrives the light collection of equal angular
Same position on pupil face, the even smooth film modulate the optical signal.
Preferably, in the even smooth method of the optical signal, the optical signal is transmitted by optical fiber.
Preferably, in the even smooth method of the optical signal, the even light is by modulating the transmitance of the optical signal to institute
State optical signal and carry out even light.When optical signal is by even smooth film, different light compensates transmitance to realize light by even smooth film
Signal is uniformly distributed.
Preferably, in the even smooth method of the optical signal, the transmitance of the even smooth film obtains according to following method：Obtain
The light intensity data of the optical signal, the light intensity data is normalized, asks inverse to obtain light intensity the data after normalization
Function；Light spread function is obtained by the light diffusion zone size of the optical signal；The light intensity function and the light are spread
Function enters row interpolation using interpolation algorithm；Light intensity function after interpolation and light spread function are subjected to deconvolution, obtained described
Cross rate.
Preferably, in the even smooth method of the optical signal, the light intensity data of the optical signal uses detector detection or soft
Part emulation obtains.
Preferably, in the even smooth method of the optical signal, the smooth diffusion zone size is according to the optical signal from described
Smoothing mirror piece is obtained to the distance in angular spectrum face and the optical signal by the angular spectrum face numerical aperture after the smoothing mirror piece.
Preferably, in the even smooth method of the optical signal, the interpolation algorithm is spline interpolation algorithms.
As described above, according to uniformity calculation formula：(1- (Imax-Imin)/(Imax+Imin)) x100%, wherein,
Imax is the largest light intensity of optical signal, and Imin is the minimum intensity of light of optical signal, passes through this bright even smooth method of optical signal and its dress
Put, optical signal is about 57% by the uniformity of the hot spot formed after smoothing mirror piece, passes through the equal of the hot spot after even smooth film modulation
Even property is up to 95%, and middle uniformity is about that 85% tool improves a lot compared with prior art.
In the even light device of optical signal provided in an embodiment of the present invention and its method, optical signal is transmitted by light conduction cell
To a smoothing mirror piece, the smoothing mirror piece can be by same position on the light collection of equal angular to pupil face, the smoothing mirror piece
One side away from the light conduction cell is provided with an even smooth film, and the even smooth film is used to modulate the optical signal, so that passing through
The uniformity of the optical signal of the smoothing mirror piece is improved.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Scope.
Claims (14)
- A kind of 1. even light device of optical signal, it is characterised in that including：Light conduction cell and smoothing mirror piece；The light conduction cell For transmitting optical signal；The smoothing mirror piece is used for same position on the light collection of equal angular to pupil face, the even light Eyeglass is arranged on the output end of the light conduction cell, and it is even that the one side of the smoothing mirror piece away from the light conduction cell is provided with one Light film, the even smooth film are used to modulate the optical signal.
- 2. the even light device of optical signal as claimed in claim 1, it is characterised in that the light conduction cell is optical fiber.
- 3. the even light device of optical signal as claimed in claim 1, it is characterised in that the even smooth film is by modulating the optical signal Transmitance even light is carried out to the optical signal.
- 4. the even light device of optical signal as claimed in claim 1, it is characterised in that the transmitance of the even smooth film is according to such as lower section Method obtains：The light intensity data of the optical signal is obtained, the light intensity data is normalized, the data after normalization are asked reciprocal Obtain light intensity function；Light spread function is obtained by the light diffusion zone size of the optical signal；Row interpolation is entered using interpolation algorithm to the light intensity function and the smooth spread function；Light intensity function after interpolation and light spread function are subjected to deconvolution, obtain the transmitance.
- 5. the even light device of optical signal as claimed in claim 4, it is characterised in that the light intensity data of the optical signal uses detection Device detects or software emulation obtains.
- 6. the even light device of optical signal as claimed in claim 4, it is characterised in that the smooth diffusion zone size is according to the light Distance and the optical signal of the signal from the smoothing mirror piece to angular spectrum face pass through the angular spectrum face numerical value after the smoothing mirror piece Aperture obtains.
- 7. the even light device of optical signal as claimed in claim 4, it is characterised in that the interpolation algorithm is calculated for spline interpolation Method.
- A kind of 8. even smooth method of optical signal, it is characterised in that including：An optical signal is provided, the optical signal passes through a smoothing mirror Piece carries out even light, and the exiting surface of the smoothing mirror piece has an even smooth film, and the smoothing mirror piece is by the light collection of equal angular Same position on to pupil face, the even smooth film modulate the optical signal.
- 9. the even smooth method of optical signal as claimed in claim 8, it is characterised in that the optical signal is transmitted by optical fiber.
- 10. the even smooth method of optical signal as claimed in claim 8, it is characterised in that the even light is by modulating the optical signal Transmitance even light is carried out to the optical signal.
- 11. the even smooth method of optical signal as claimed in claim 8, it is characterised in that the transmitance of the even smooth film is according to as follows Method obtains：The light intensity data of the optical signal is obtained, the light intensity data is normalized, the data after normalization are asked reciprocal Obtain light intensity function；Light spread function is obtained by the light diffusion zone size of the optical signal；To the light intensity function and light diffusion letter Number enters row interpolation using interpolation algorithm；Light intensity function after interpolation and light spread function are subjected to deconvolution, obtain the transmitance.
- 12. the even smooth method of optical signal as claimed in claim 11, it is characterised in that the light intensity data of the optical signal uses spy Survey device detection or software emulation obtains.
- 13. the even smooth method of optical signal as claimed in claim 11, it is characterised in that the smooth diffusion zone size is according to Distance and the optical signal of the optical signal from the smoothing mirror piece to angular spectrum face pass through the angular spectrum face number after the smoothing mirror piece Value aperture obtains.
- 14. the even smooth method of optical signal as claimed in claim 11, it is characterised in that the interpolation algorithm is calculated for spline interpolation Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610510444.9A CN107561715B (en) | 2016-06-30 | 2016-06-30 | Optical signal dodging device and its method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610510444.9A CN107561715B (en) | 2016-06-30 | 2016-06-30 | Optical signal dodging device and its method |
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| CN107561715A true CN107561715A (en) | 2018-01-09 |
| CN107561715B CN107561715B (en) | 2019-08-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624241Y (en) * | 2003-03-29 | 2004-07-07 | 鸿富锦精密工业（深圳）有限公司 | Optical homogenizer |
| US20040156130A1 (en) * | 2002-12-31 | 2004-08-12 | Powell Karlton David | Homogenizing optical sheet, method of manufacture, and illumination system |
| CN201199269Y (en) * | 2008-05-29 | 2009-02-25 | 西安华科光电有限公司 | Even light lens and system thereof |
| CN203433197U (en) * | 2012-12-31 | 2014-02-12 | 深圳市光峰光电技术有限公司 | Light equalizing device, light emitting device and projection system |
-
2016
- 2016-06-30 CN CN201610510444.9A patent/CN107561715B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040156130A1 (en) * | 2002-12-31 | 2004-08-12 | Powell Karlton David | Homogenizing optical sheet, method of manufacture, and illumination system |
| CN2624241Y (en) * | 2003-03-29 | 2004-07-07 | 鸿富锦精密工业（深圳）有限公司 | Optical homogenizer |
| CN201199269Y (en) * | 2008-05-29 | 2009-02-25 | 西安华科光电有限公司 | Even light lens and system thereof |
| CN203433197U (en) * | 2012-12-31 | 2014-02-12 | 深圳市光峰光电技术有限公司 | Light equalizing device, light emitting device and projection system |
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| CN107561715B (en) | 2019-08-23 |
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