CN102878529A - Reflector, lighting device, detection/measurement device and detection/measurement method - Google Patents
Reflector, lighting device, detection/measurement device and detection/measurement method Download PDFInfo
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- CN102878529A CN102878529A CN2012104089424A CN201210408942A CN102878529A CN 102878529 A CN102878529 A CN 102878529A CN 2012104089424 A CN2012104089424 A CN 2012104089424A CN 201210408942 A CN201210408942 A CN 201210408942A CN 102878529 A CN102878529 A CN 102878529A
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- reflector
- reflecting surface
- light
- light source
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Abstract
The invention discloses a reflector, a lighting device applying the reflector, a detection device, a measurement device, a measurement method and a detection method. The reflector comprises at least two reflecting surfaces which are one sections of elliptic cylindrical surfaces; and each reflecting surface has two focal lines, and one focal lines of the reflecting surfaces are superposed. Compared with the prior art, the reflector comprises at least two reflecting surfaces, which are one sections of elliptic cylindrical surfaces; and each reflecting surface has two focal lines, and one focal lines of the reflecting surfaces are superposed, the reflector projects the lights which are sent out by the focal lines onto an object to be measured to form a light band, so that the light intensity is enhanced, and the light utilization ratio is increased.
Description
Technical field
The present invention relates to a kind of reflector, relate in particular to a kind of reflector that improves the utilization rate of light, use checkout gear or measurement mechanism and detection method or the measuring method of this reflector.
Background technology
Whether measurement and detection technique are widely used in modern processing manufacturing industry, meet the requirements to determine element, semi-finished product or finished product.A kind of detection system comprises dome lamp, prism and image-forming module.The light that described dome lamp sends shines object under test, and light reflexes to prism so that image-forming module is taken imaging from object under test.Above-mentioned detection system is although can realize non-contact type on-line measurement; But, need the dome lamp of higher-wattage just can provide blur-free imaging needed brightness, the utilization rate of light is not high.
Summary of the invention
In view of the above, be necessary to provide a kind of reflector that improves the utilization rate of light.
In addition, also be necessary to provide a kind of measurement and/or checkout gear of this reflector of application.
Further, also be necessary to provide a kind of measuring method of utilizing above-mentioned measurement mechanism.
Further, also be necessary to provide a kind of detection method of utilizing above-mentioned detection device.
Further, also be necessary to provide a kind of lighting device that utilizes above-mentioned reflector.
A kind of reflector comprises at least two reflectings surface, and described reflecting surface is a section of elliptic cylinder; Each reflecting surface has two focal lines, and wherein focal line of described reflecting surface overlaps.
Wherein, the number of described reflecting surface is two, three or four.
Wherein, this reflector also comprises the first side, the second side and the 3rd side, and the first side and the second side are parallel to each other, and the 3rd side is connected with the first side and the second lateral vertical respectively.
A kind of measurement and/or checkout gear, be used for measuring and/or detecting object under test, this device comprises light source, reflector and image-forming module, described reflector be used for to receive light that light source sends be projeced into to be measured and/or inspected object on think that image-forming module is provided as picture light, described reflector comprises at least two reflectings surface, and described reflecting surface is a section of elliptic cylinder; Each reflecting surface has two focal lines, and wherein focal line of described reflecting surface overlaps, reflector be used for receiving light that light source sends be projeced into to be measured and/or inspected object on form light belt.
Wherein, the installation site of described light source is: to be checked angle of i section transverse and to be measured and/or inspected object is α
i,
Wherein, this reflecting surface place elliptic equation is
h
iBe the vertical range of to be checked of i light source distance, f
1, f
2..., f
i... f
nBe the focal length of the ellipse at i section elliptic arc place, A
iBe the long axis length of i section reflecting surface place ellipse, B
iBe the minor axis length of i section reflecting surface place ellipse, f
i 2=A
i 2-B
i 2, A
iB
i
Wherein, described device also further comprises control chip, and described control chip is connected with power supply and image-forming module signal, and described control chip is for the treatment of the captured image of image-forming module.
Wherein, described light source is led light source, and each led light source has a LED lamp pearl at least.
Wherein, at least two of described reflectors, described reflector compartment of terrain is installed on this device, and the quantity of described light source is identical with reflector quantity.
Wherein, described device is symmetrically installed with described reflector and light source.
Wherein, the number of described reflecting surface is two, three or four.
A kind of measuring method of using above-mentioned measurement mechanism may further comprise the steps:
Material to be measured is positioned over the precalculated position;
The light of light source will be through being projeced on the object to be measured and forming reverberation behind the described reflector;
Described reverberation enters the image-forming module imaging.
A kind of detection method of using above-mentioned detection device may further comprise the steps:
Material to be measured is positioned over the precalculated position;
The light of light source will be through being projeced on the object to be measured and forming reverberation behind the described reflector;
Described reverberation enters the image-forming module imaging;
To get image and benchmark image relatively, and judge whether to meet the demands or affiliated grade.
A kind of lighting device, this lighting device comprises light source and reflector, the reflecting surface of described reflector is at least two sections elliptic cylinders, the focal length of described elliptic cylinder is unequal, and have common focal line by the cross section that is parallel to the place, plane that major axis and minor axis consist of, described reflecting surface will be installed on the light that the light source on the elliptic cylinder focal line sends and concentrate on described each common focal line to form a light belt.
A kind of checkout gear, for detection of object under test, this device comprises image-forming module and line source, reflector, described reflector arranges in pairs, described reflector be used for to receive the light that line source sends and is projeced into examined object, thereby for image-forming module is provided as picture light, the described reflector of described reflector comprises at least two reflectings surface, and described reflecting surface is a section of elliptic cylinder; The focal line of each reflecting surface is provided with described line source, each reflecting surface has two focal lines, wherein focal line of described reflecting surface overlaps, and the light that reflector sends for the reception light source is projeced into and forms light belt on the examined object, every pair of light belt coincidence that reflector forms.
Compared to prior art, reflector of the present invention comprises at least two reflectings surface, and described reflecting surface is a section of elliptic cylinder; Each reflecting surface has two focal lines, and wherein focal line of described reflecting surface overlaps, and described reflector will be positioned at ray cast that focal line sends on object under test and form light belt, improve light intensity, increase the utilization rate of light.
Description of drawings
Fig. 1 is the schematic cross-section of the reflector of the present invention's the first preferred embodiment.
Fig. 2 is the schematic cross-section of the reflector of the present invention's the second preferred embodiment.
Fig. 3 is the schematic cross-section of the reflector of the present invention's the 3rd preferred embodiment.
Fig. 4 is the schematic cross-section of the reflector of the present invention's the 4th preferred embodiment.
Fig. 5 is the measurement mechanism module diagram of preferred embodiment of the present invention.
Fig. 6 is the measurement mechanism structural representation of preferred embodiment of the present invention.
The specific embodiment
By describing technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with embodiment and cooperate accompanying drawing to give in detail explanation.Reflector of the present invention is applied to that optical field is measured or detection field, below is applied to fields of measurement take it and is illustrated as example.
See also Fig. 1, the reflector 101 of the present invention's the first preferred embodiment comprises the first reflecting surface 11, the second reflecting surface 13.Described the first reflecting surface 11 and the second reflecting surface 13 are respectively a section of elliptic cylinder.Described the first reflecting surface 11 has focal line A11, and described the second reflecting surface 13 has focal line A12, and the position of another focal line of described the first reflecting surface 11 and the second reflecting surface 13 overlaps (not shown).The length of described elliptic arc can be respectively 1/5th, 1/4th, 1/3rd of interior all overall lengths, perhaps other length that need.Be parallel on the tangent plane of macropinacoid, the ellipse at described the first reflecting surface 11 and the second reflecting surface 13 places has a common focal line (figure is mark not), and light is projeced on the described common focal line after described the first reflecting surface 11 and 13 reflections of the second reflecting surface.
The light that sends from focal line A11 shines a point (not shown) of throwing on the object under test after 11 reflections of the first reflecting surface.The light that sends from focal line A12 projects the b point (not shown) on the object under test after 13 reflections of the second reflecting surface, described a point overlaps with the b point.
See also Fig. 2, the reflector 103 of the present invention's the second preferred embodiment comprises the first reflecting surface 11, the second reflecting surface 13 and the 3rd reflecting surface 15.Described the first to the 3rd reflecting surface is elliptic cylinder.The length of described oval circular arc can be respectively respectively 1/5th, 1/4th, 1/3rd of oval total circumference, perhaps other length that need.Described the first reflecting surface 11, the second reflecting surface 13 and the 3rd reflecting surface 15 have common focal line at the ellipse of the tangent plane that is parallel to macropinacoid, are projeced into behind the described light reflection on the described common focal line.
The light that sends from focal line A21 shines point on the object under test through shining point and the light a22 that sends from focal line A22 on the object under test after 11 reflections of the first reflecting surface after 13 reflections of the second reflecting surface, and the point that shines on the object under test after 11 reflections of the first reflecting surface from the light a23 that focal line A23 sends coincides.
See also Fig. 3, similarly, the reflector 105 of the present invention's the 3rd preferred embodiment comprises several reflectings surface 11,13 ..., n, each reflecting surface 11,13 ..., n is a section of elliptic cylinder.The light that sends from each focal line projects the position that overlaps on the object under test after the reflecting surface reflection of correspondence.
See also Fig. 4, reflector 101 structural similarities of the reflector 107 of the present invention's the 4th preferred embodiment and the first preferred embodiment, only, this reflector 107 also comprises the first side 12, the second side 14 and the 3rd side 16.Described the first side 12 and the second side 14 roughly are parallel to each other, and described 16 difference the first sides 12, the 3rd side and the second side 14 are roughly mutually vertical.First to the 3rd side 12 of this 4th preferred embodiment, 14 and 16 plane layout are more convenient for being installed on the location.
See also Fig. 5 and 6, the measurement mechanism 100 of preferred embodiment of the present invention is illustrated as an example of the reflector 103 of using the second preferred embodiment example.Described measurement mechanism 100 also comprises light source 30, image-forming module 70 and control chip 90.The light that described reflector 103 sends light source 30 is gathered on the object under test 200.The luminous position of described light source 30 is arranged on reflector 103 each focal line position.Described control chip 90 is used for the imaging of the luminous and image-forming module 70 of control light source 30.
In preferred embodiment of the present invention, described light source 30 is led light source 30, and described led light source 30 comprises that plurality of LEDs forms linear light source 30.Described linear light source 30 forms a light belt through reflector 103 reflections in the object under test projection.The light belt stack that each light source 30 throws, thereby the brightness that improves light.The light that described light source 30 sends is projeced on the object under test through reflector 103, has improved the utilization rate of light source 30.
The position of the light source 30 of preferred embodiment of the present invention is determined as follows: according to elliptic equation be
I section transverse and to be checked 's angle is α
i,
H wherein
iBe the vertical range of to be checked of i light source distance, f
1... f
i... f
nBe the focal length of the ellipse at i section elliptic arc place, A
i, B
iBe the major and minor axis length of the ellipse at i section elliptic cylinder place.
Particularly, the light source 30 of each side of preferred embodiment of the present invention comprises 3 led light sources 31,32 and 33, and described led light source is LED bar light source, and a21, a22 and a23 emit beam respectively.Take the location positioning of light source 33 as example, described
Can determine h according to the said firm
3, perhaps at h
3And α
3In the fixed situation, the anti-f that asks
3Thereby, determine the elliptic arc that is fit to.
See also Fig. 6, determine because the major axis at this arc place and minor axis are long, thereby can calculate focal distance f
3, according to leg-of-mutton sine relation, draw
Further, the light source 30 of described LED can be selected suitable light emitting anger, thereby makes ray cast as much as possible on object under test, further improves the utilization rate of light.
Further, can reflection shield can be set at described light source 30, make light as much as possible be projected to object under test 200 by reflection shield.
The normal of an object under test 200 is symmetry axis in the measurement mechanism 100 of preferred embodiment of the present invention, and two described reflectors and light source 30 are installed symmetrically, thereby further improves light intensity; Simultaneously, owing to being symmetrical arranged, can reduce the shade that forms owing to object under test 200 defectives, help to improve the quality of imaging.
In addition, for further being provided as image quality, can further use the optical instruments such as microscope, magnifying glass.
See also Fig. 6, the measurement mechanism 100 of preferred embodiment of the present invention is used for measuring the size of liquid crystal panel 200.This measuring method may further comprise the steps:
The light that light source 30 sends is incident upon liquid crystal panel 200 upper and formation reverberation to be measured after reflector 103 reflections;
Described reverberation enters image-forming module 70;
Image-forming module 70 imagings.
Wherein, above-mentioned step was finished in moment, and explanation only is the convenience in order to understand step by step.
Wherein, described liquid crystal panel 200 can be at static state measurement, also can be positioned on the streamline of persistent movement to measure.
In addition, can also further add comparison step: image-forming module 70 formed images are compared with the image of benchmark, if in allowed limits, then be qualified, otherwise be defective; Thereby 100 of this measurement mechanisms are checkout gear; Also can be used for judging the grade of object under test 200, such as the grade of tolerance, credit rating.
The light that the reflector 103 of the better enforcement measurement mechanism 100 of the present invention will be in different focal lines is gathered into a light belt, thereby can utilize the light source 30 of smaller power to reach higher light intensity; Be in the light that the focal line position sends and be projeced on the object under test after reflector 103 reflections, the utilization rate of light is high.
Described reflector 103 forms lighting device with light source 30.This lighting device can pool the light that light source 30 sends the higher light beam of brightness.
Further, light source 30 in the preferred embodiment of the present invention is projeced on the object under test from all directions directive reflector 103 and the reflex by reflector 103, in the situation that adopt symmetrical structure, because light projects on the object under test from all angles, the light that reflexes to image-forming module 70 because of the rough surface of object under test itself will become evenly, thereby reduce the interference of background influence; On the contrary, because defectives such as the cut of determinand, bubbles, the light that reflexes to image-forming module 70 is strong and weak different, has deepened imaging effect, thereby has been conducive to more clearly reflect the defect condition of determinand.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (14)
1. reflector, it is characterized in that: this reflector comprises at least two reflectings surface, described reflecting surface is a section of elliptic cylinder; Each reflecting surface has two focal lines, and wherein focal line of described reflecting surface overlaps.
2. reflector according to claim 1, it is characterized in that: the number of described reflecting surface is two, three or four.
3. reflector according to claim 1 and 2, it is characterized in that: this reflector also comprises the first side, the second side and the 3rd side, and the first side and the second side are parallel to each other, and the 3rd side is connected with the first side and the second lateral vertical respectively.
4. measure and/or checkout gear for one kind, be used for measuring and/or detecting object under test, this device comprises light source, reflector and image-forming module, described reflector be used for to receive the light that light source sends and is projeced into to be measured and/or inspected object, thereby for image-forming module is provided as picture light, it is characterized in that: described reflector comprises at least two reflectings surface, and described reflecting surface is a section of elliptic cylinder; Each reflecting surface has two focal lines, and wherein focal line of described reflecting surface overlaps, reflector be used for receiving light that light source sends be projeced into to be measured and/or inspected object on form light belt.
5. measurement according to claim 4 and/or checkout gear, it is characterized in that: the installation site of described light source is: to be checked angle of i section transverse and to be measured and/or inspected object is α
i,
Wherein, this reflecting surface place elliptic equation is
h
iBe the vertical range of to be checked of i light source distance, f
1, f
2..., f
i... f
nBe the focal length of the ellipse at i section elliptic arc place, A
iBe the long axis length of i section reflecting surface place ellipse, B
iBe the minor axis length of i section reflecting surface place ellipse, f
i 2=A
i 2-B
i 2, A
iB
i
6. measurement according to claim 4 and/or checkout gear, it is characterized in that: described device also further comprises control chip, and described control chip is connected with power supply and image-forming module signal, and described control chip is for the treatment of the captured image of image-forming module.
7. according to claim 4-the 6 described measurement of any one and/or checkout gear, it is characterized in that: described light source is led light source, each led light source is LED lamp bar.
8. measurement according to claim 7 and/or checkout gear is characterized in that: at least two of described reflectors, and described reflector compartment of terrain is installed on this device, and the quantity of light source is identical with the reflecting surface quantity of reflector on each reflector.
9. measurement according to claim 8 and/or checkout gear, it is characterized in that: described device is symmetrically installed with described reflector and light source.
10. measurement according to claim 8 and/or checkout gear, it is characterized in that: the number of described reflecting surface is two, three or four.
11. checkout gear, for detection of object under test, this device comprises image-forming module and line source, reflector, described reflector arranges in pairs, described reflector be used for to receive the light that line source sends and is projeced into examined object, thereby for image-forming module is provided as picture light, it is characterized in that: the described reflector of described reflector comprises at least two reflectings surface, and described reflecting surface is a section of elliptic cylinder; The focal line of each reflecting surface is provided with described line source, each reflecting surface has two focal lines, wherein focal line of described reflecting surface overlaps, and the light that reflector sends for the reception light source is projeced into and forms light belt on the examined object, every pair of light belt coincidence that reflector forms.
12. an application rights requires the measuring method of the measurement mechanism of 4-10 any one, may further comprise the steps:
Material to be measured is positioned over the precalculated position;
The light of light source will be through being projeced on the object to be measured and forming reverberation behind the described reflector;
Described reverberation enters the image-forming module imaging.
13. an application rights requires the detection method of the checkout gear of 4-10 any one, may further comprise the steps:
Material to be measured is positioned over the precalculated position;
The light of light source will be through being projeced on the object to be measured and forming reverberation behind the described reflector;
Described reverberation enters the image-forming module imaging;
To get image and benchmark image relatively, and judge whether to meet the demands or affiliated grade.
14. lighting device, this lighting device comprises light source and reflector, it is characterized in that: the reflecting surface of described reflector is at least two sections elliptic cylinders, the focal length of described elliptic cylinder is unequal, and have common focal line by the cross section that is parallel to the place, plane that major axis and minor axis consist of, described reflecting surface will be installed on the light that the light source on the elliptic cylinder focal line sends and concentrate on described each common focal line to form light belt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104089424A CN102878529A (en) | 2012-09-29 | 2012-10-23 | Reflector, lighting device, detection/measurement device and detection/measurement method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376562 | 2012-09-29 | ||
| CN201210376562.7 | 2012-09-29 | ||
| CN2012104089424A CN102878529A (en) | 2012-09-29 | 2012-10-23 | Reflector, lighting device, detection/measurement device and detection/measurement method |
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|---|---|
| CN102878529A true CN102878529A (en) | 2013-01-16 |
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| CN2012104089424A Pending CN102878529A (en) | 2012-09-29 | 2012-10-23 | Reflector, lighting device, detection/measurement device and detection/measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105992972A (en) * | 2014-02-13 | 2016-10-05 | 维尔特格拉菲斯克博士技术有限两合公司 | Device and method for generating image information from an object to be captured |
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Application publication date: 20130116 |