CN2762355Y - LED multi-color line light source - Google Patents
LED multi-color line light source Download PDFInfo
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- CN2762355Y CN2762355Y CNU2004200936456U CN200420093645U CN2762355Y CN 2762355 Y CN2762355 Y CN 2762355Y CN U2004200936456 U CNU2004200936456 U CN U2004200936456U CN 200420093645 U CN200420093645 U CN 200420093645U CN 2762355 Y CN2762355 Y CN 2762355Y
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Abstract
The utility model relates to a multi-color line lighting source which provides line forms which are required by scanning and acquiring image signals for a linear array image sensor. The utility model comprises a red light emitting diode, a green light emitting diode, a blue light emitting diode, two columns of blue light emitting diodes (2), two columns of green light emitting diodes (3) and two columns of red light emitting diodes (4), wherein the light emitting diodes are divided into six columns to be arranged on the cylinder face of a bracket (1) equidistantly; the two columns of the light emitting diodes with the same color are staggered in one-half separation distance; the extension line of an optical axis of each of the light emitting diode through the center of circle of the cylinder face of the bracket (1) is overlapped with the radial direction of the cylinder face of the bracket (1). The utility model can have proper and uniform light intensity for scanning lines, besides, the utility model can provide adjustable and different wavelength and illumination light from different incoming angles. The utility model is an LED multi-color line light source with high efficiency, easy wavelength adjustment and easy incoming angle adjustment, wherein the LED multi-color line light source can realize the light intensity, the wavelength and the incoming angles of illumination light sources, which are required by the linear array image sensor.
Description
1, technical field:
The utility model is a kind ofly scan image to be provided and to obtain the needed linear multi-color illumination light source of picture signal for line scan image sensor.The innovative technology that belongs to the used line source of line scan image sensor.
2, background technology:
At present, imageing sensor is divided into two big classes by structure, is respectively array image sensor and line scan image sensor.Line scan image sensor has many superiority than array image sensor in the detection of high accuracy, high-resolution, large format and moving image, thereby uses very extensive.Because at a high speed, high precision image obtains, different testee surfacings have different reflection coefficients and different testee that different situations such as surface configuration are arranged to the different wave length illumination light, lighting source has been proposed following requirement: 1, lighting source should have suitable and uniform light intensity on scan line, for improving the efficiency ratio of lighting source, should adopt line source; 2, because different testee surfacings have different reflection coefficients to the different wave length illumination light, lighting source should be able to provide the illumination light of adjustable different wave length; 3, because testee surface configuration different, lighting source should be able to provide the illumination light of adjustable different incidence angles degree.At present both at home and abroad the used line source of line scan image sensor has monochromatic line source, and it adjusts the illumination light that realizes the different incidence angles degree by installing, but the shortcoming of its existence is the illumination light of the different wave length that can not provide adjustable; In addition, also have the area source of the fixedly incident angle of the annular of polychrome and rectangle, the shortcoming of its existence is the illumination light of the different incidence angles degree that can not provide adjustable.
3, summary of the invention:
The purpose of this utility model is to consider the problems referred to above and a kind of suitable and uniform light intensity that not only has on scan line is provided, and the adjustable different wave length and the LED polychrome line source of different incidence angles degree illumination light can be provided.Efficiency ratio height of the present utility model, it is easy to adjust wavelength and incident angle, can realize the requirement of line scan image sensor to light intensity, wavelength and the incident angle of lighting source.
Structural representation of the present utility model as shown in Figure 1, include the LED of three kinds of colors of red, green, blue, the LED of blue led row (2), green LED row (3), (4) three kinds of colors of red LED row respectively has two row, being divided into Cheng Liulie equidistantly is arranged on the face of cylinder of support (1), two row LED 1/2nd spacings that stagger of same color, the extended line of the optical axis of LED is through the center of circle on support (1) face of cylinder, radially overlapping with support (1) face of cylinder.
Above-mentioned blue led row (2) are arranged in and the minimum angle of Z axle, and next arranges green LED row (3), and red LED row (4) have maximum angle with the Z axle, and same color LED row are arranged with the Z axial symmetry.
The face of cylinder radius of above-mentioned support (1) is determined according to the optically focused distance of LED.
The spacing of above-mentioned LED is determined by light intensity and the visual angle relation curve of LED.
The length of above-mentioned LED row is at least than requiring long 2 spot diameters of illumination length.
Above-mentioned all LED row can move on this round week, to regulate light angle.
Above-mentioned support (1) has logical light rectangular opening (5) in plane, X=0 place and the Plane intersects position that is parallel to the Z axle.
The utility model is owing to adopt the structure of being made of the polychrome line source LED, and it is compared with the prior art line source, has following characteristics:
1, the utility model light distribution is more even, and maximum deviation is 10%; Linear light length can make things convenient for making as requested, is the line source of a high-quality.
2, the efficiency ratio height of light source.
3, change the light intensity of red, green, blue coloured light respectively, stack by three coloured light, can produce the linear light of polychrome, the exact image that satisfies different testees obtains requirement, the heterogeneous light wavelength that produces is from 430nm～655nm, and main color has indigo plant, green grass or young crops, dark green, green, yellow, orange and red etc.
4, light angle is easy to adjust, and does not change light intensity and color, helps the detection to various testee surface configurations, and its average light angle (with the angle of Z axle) is from 28 °～62 °.
The utility model is a kind of efficiency ratio height, and it is easy to adjust wavelength and incident angle, can realize the LED polychrome line source of line scan image sensor to the requirement of light intensity, wavelength and the incident angle of lighting source.
4, description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the relation curve at the utility model light intensity and visual angle;
Fig. 3-1 is the front view of the utility model LED row installed module;
Fig. 3-2 is the end view of the utility model LED row installed module;
Fig. 3-3 is the vertical view of the utility model LED row installed module;
Fig. 4 is that the utility model LED row installed module is installed in the structural representation on support (1) face of cylinder.
5, embodiment:
Embodiment:
Structural representation of the present utility model as shown in Figure 1, include the LED of three kinds of colors of red, green, blue, the LED of blue led row (2), green LED row (3), (4) three kinds of colors of red LED row respectively has two row, being divided into Cheng Liulie equidistantly is arranged on the face of cylinder of support (1), two row LED 1/2nd spacings that stagger of same color, the extended line of the optical axis of LED is through the center of circle on support (1) face of cylinder, radially overlapping with support (1) face of cylinder.
In the present embodiment, above-mentioned LED includes blue led row (2), green LED row (3), (4) three kinds of colors of red LED row and is specially and selects LSE3024, LSG3024, LSB3024 red, green, blue LED for use,
LSE3024, LSG 3024, the major parameter that LSB3024 red, green, blue LED is relevant are:
| Diameter (mm) | Minimum wavelength (nm) | Peak wavelength (nm) | Maximum wavelength (nm) | Optically focused distance (mm) | The visual angle (°) | |
| LSB3024 | 3mm | 430 | 473 | 523 | 9 | 20 |
| LSG3024 | 3mm | 480 | 518 | 590 | 9 | 20 |
| LSE3024 | 3mm | 595 | 632 | 655 | 9 | 20 |
Above-mentioned blue led row (2) are arranged in and the minimum angle of Z axle, and next arranges green LED row (3), and red LED row (4) have maximum angle with the Z axle, and same color LED row are arranged with the Z axial symmetry.
The face of cylinder radius of above-mentioned support (1) is determined according to the optically focused distance of LED.Because of the optically focused of LED distance is 9mm, so the face of cylinder radius of support (1) is 9mm.
The spacing of above-mentioned LED is determined by light intensity and the visual angle relation curve of LED.The relation curve at light intensity and visual angle as shown in Figure 2, it is approximately half elliptic curve.
Spacing=9 * tan20 °=3.276mm.D1, D2 ..., Dn is a LED who lists, D1 ', and D2 ' ..., Dn ' is another LED that lists.
Characteristic value after two row LED light intensity stacks is:
| 2 | 1.773 | 1.738 | 1.783 | 1.815 | 1.838 | 1.754 | 1.863 |
| 1.866 | 1.863 | 1.754 | 1.838 | 1.815 | 1.783 | 1.738 | 1.773 |
Light intensity mean value is 1.812, compares with average intensity, and the light intensity maximum deviation is 10%
The length of above-mentioned LED row is at least than requiring long 2 spot diameters of illumination length.Linear light length L according to the need illumination ', determine the long L of LED row:
L≥L’+6
Above-mentioned all LED row can move on this round week, to regulate light angle.
Above-mentioned support (1) has logical light rectangular opening (5) in plane, X=0 place and the Plane intersects position that is parallel to the Z axle.In the present embodiment, above-mentioned support (1) intersects the line place that forms at the face of the face of cylinder radius+12mm of the face of X=0 and Z=support (1) and has logical light rectangular opening (5).The length of above-mentioned logical light rectangular opening (5) is that LED row length and width degree is 2mm.
The utility model is processed 6 of LED row installed modules according to Fig. 3 when mounted, and 3 as a module group, other three Y to first three piece 1/2nd spacings that stagger.According to Fig. 1 this two module groups are installed.The A face is on the face of cylinder of 9mm at radius.And be 3.5V according to the operating voltage of LSB3024, operating current is 40mA; The operating voltage of LSG3024 is 3.5V, and operating current is that the operating voltage of 40mA and LSE3024 is 2.2V, and operating current is 50mA, selects the 12V DC power supply for use.According to its connection in series-parallel situation, calculate current-limiting resistance, connect circuit of light sources and get final product.
Claims (6)
1, a kind of LED polychrome line source, it is characterized in that including the LED of three kinds of colors of red, green, blue, the LED of blue led row (2), green LED row (3), (4) three kinds of colors of red LED row respectively has two row, being divided into Cheng Liulie equidistantly is arranged on the face of cylinder of support (1), two row LED 1/2nd spacings that stagger of same color, the extended line of the optical axis of LED is through the center of circle on support (1) face of cylinder, radially overlapping with support (1) face of cylinder.
2, LED polychrome line source according to claim 1, it is characterized in that above-mentioned blue led row (2) are arranged in and the minimum angle of Z axle, next arranges green LED row (3), and red LED row (4) have maximum angle with the Z axle, and same color LED row are arranged with the Z axial symmetry.
3, LED polychrome line source according to claim 1 and 2, the length that it is characterized in that above-mentioned LED row is at least than requiring long 2 spot diameters of illumination length.
4, LED polychrome line source according to claim 1 and 2 is characterized in that above-mentioned all LED row can move, to regulate light angle on this round week.
5, LED polychrome line source according to claim 1 and 2 is characterized in that above-mentioned support (1) has logical light rectangular opening (5) in plane, X=0 place and the Plane intersects position that is parallel to the Z axle.
6, LED polychrome line source according to claim 5, the length that it is characterized in that above-mentioned logical light rectangular opening (5) are that LED row length and width degree is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200936456U CN2762355Y (en) | 2004-09-30 | 2004-09-30 | LED multi-color line light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200936456U CN2762355Y (en) | 2004-09-30 | 2004-09-30 | LED multi-color line light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2762355Y true CN2762355Y (en) | 2006-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200936456U Expired - Fee Related CN2762355Y (en) | 2004-09-30 | 2004-09-30 | LED multi-color line light source |
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| Country | Link |
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| CN (1) | CN2762355Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235943B (en) * | 2007-02-01 | 2013-02-27 | 广东昭信光电科技有限公司 | Large power illumination light-emitting diode lamp optical structure |
| CN111795323A (en) * | 2020-07-30 | 2020-10-20 | 广州达森灯光股份有限公司 | Rainbow light projector |
-
2004
- 2004-09-30 CN CNU2004200936456U patent/CN2762355Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235943B (en) * | 2007-02-01 | 2013-02-27 | 广东昭信光电科技有限公司 | Large power illumination light-emitting diode lamp optical structure |
| CN111795323A (en) * | 2020-07-30 | 2020-10-20 | 广州达森灯光股份有限公司 | Rainbow light projector |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |