CN105141802A - Ultraviolet light transmission light source and image reading device - Google Patents
Ultraviolet light transmission light source and image reading device Download PDFInfo
- Publication number
- CN105141802A CN105141802A CN201510586752.5A CN201510586752A CN105141802A CN 105141802 A CN105141802 A CN 105141802A CN 201510586752 A CN201510586752 A CN 201510586752A CN 105141802 A CN105141802 A CN 105141802A
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- China
- Prior art keywords
- light
- light source
- ultraviolet
- ultraviolet light
- light transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
- H04N1/02855—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array in combination with a light guide, e.g. optical fibre, glass plate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
- H04N1/0287—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps
- H04N1/02875—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps comprising a reflective coating
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02895—Additional elements in the illumination means or cooperating with the illumination means, e.g. filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0081—Image reader
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
The present invention provides an ultraviolet light transmission light source, comprising two illuminant units, two connection portions, an optical conductor and a plurality of reflective membranes. Each illuminant unit includes a luminescent device and a substrate bearing the luminescent device, wherein the luminescent device is an ultraviolet LED; two end surfaces of the optical conductor are defined as incident planes of the light, the body of the optical conductor is provided with a light-exiting surface and light-reflecting surfaces; each illuminant unit is respectively connected with the incident planes of the light of the optical conductor through the two connection portions, and the ultraviolet LED is arranged on the substrate facing the incident planes of the light of the optical conductor; and the reflective membranes are pasted on the light-reflecting surfaces of the optical conductor. The ultraviolet light transmission light source provided by the invention is capable of reducing light loss, with good output characteristics.
Description
Technical field
The present invention relates to image read-out field, particularly relate to that a kind of light source utilization ratio is higher, the good ultraviolet light transmission light source of output characteristic and image read-out.
Background technology
Existing financial sector (such as bank etc.) mainly reads the anti-counterfeiting information of the one sides such as bank note by ultraviolet light sexual reflex light source 31 or ultraviolet light array light source 32 to the anti-counterfeit recognition of the marketable securities such as bank note, as depicted in figs. 1 and 2.Concrete identifying is as follows: first ultraviolet light sexual reflex light source 31 or ultraviolet light array light source 32 send UV light permeability glass plate 2 and shine by the original copy 7 differentiated, original copy 7 with anti-counterfeiting substances under the irradiation of ultraviolet light, inspire visible ray, then the visible ray be inspired reflexes to the lens arra 4 in image read-out again, and then the photoelectric conversion part 5 be irradiated on sensor base plate 6, photoelectric conversion part 5 exports after converting light signal to the signal of telecommunication.
The above-mentioned course of work is by the utilization of principle of reflection realization to ultraviolet light, and light shines original copy 7 in fan-shaped trend by the light conductor of ultraviolet light sexual reflex light source 31 after exiting surface sends, light irradiation area is large, then original copy 7 reflects after receiving light again, this process due to reflecting surface large and be diffuse reflection, so only have little luminous energy to be absorbed by image read-out, most of light has been wasted.Whole like this image read-out in the course of the work, needs ultraviolet source brightness strong especially or more ultraviolet LED number to realize good image effect, and also can only realize the reading of the one side information (one side towards there being light source) of original copy 7.But the price of ultraviolet LED is very high again, the especially ultraviolet LED of high brightness, so this just directly adds the production cost of product.Moreover the output characteristic of existing ultraviolet light sexual reflex light source 31 is poor, in effective range of exposures, often can't resolve light conductor near ultraviolet LED luminous element region output characteristic problem on the low side, as shown in Figure 3.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes that a kind of light source utilization ratio is higher, the good ultraviolet light transmission light source of output characteristic and image read-out.
To achieve these goals, one aspect of the present invention proposes a kind of ultraviolet light transmission light source, comprise two emitter units, two connecting portions, a light conductor and some reflective membranes, wherein each emitter units includes luminescent device and carries the substrate of described luminescent device, and described luminescent device is ultraviolet LED; The both ends of the surface of described light conductor are set to the plane of incidence of light, the body of described light conductor is provided with the reflecting surface of exiting surface and light, each emitter units is connected through the plane of incidence of connecting portion with the light of described light conductor respectively, and described ultraviolet LED is arranged on the substrate just to the plane of incidence of the light of described light conductor, and the reflecting surface of the light of described light conductor posts reflective membrane.
Preferably, the material composition of described light conductor comprises the polymethyl methacrylate of light transmittance more than 50% and light stabilizer, and not containing the additive component of any Absorbable rod ultraviolet light.
Preferably, the composition of described reflective membrane comprises aluminium foil.
Preferably, the shape of described light conductor cross section is six shapes, and the shape of described exiting surface is plane.
Preferably, the shape of described light conductor cross section is circular, and the shape of described exiting surface is arc surface.
The beneficial effect of the program of the present invention is that above-mentioned ultraviolet light transmission light source can reduce light loss, and its output characteristic is better.
Another aspect of the present invention proposes a kind of image read-out comprising above-mentioned ultraviolet light transmission light source, comprise the first framework and the second framework, and described first framework and the second framework are separately positioned on the both sides of original copy, lens arra is provided with in described first framework, the top of described lens arra is provided with glass plate, the below of described lens arra is provided with photoelectric conversion part, and the below of described photoelectric conversion part is provided with sensor base plate; Be provided with ultraviolet light transmission light source in described second framework, and the exiting surface of described ultraviolet light transmission light source is just to described lens arra.
Preferably, described ultraviolet light transmission light source and described photoelectric conversion part all adjustable from the distance of described original copy.
The beneficial effect of the program of the present invention is that the light source utilization ratio of above-mentioned image read-out is higher, and the double-edged anti-counterfeiting substances of original copy can be made all to be inspired visible ray.
Accompanying drawing explanation
Fig. 1 shows the sectional schematic diagram of the actinic reflection source of prior art medium ultraviolet and image read-out.
Fig. 2 shows the sectional schematic diagram of prior art medium ultraviolet optical arrays light source and image read-out.
Fig. 3 shows the output characteristics figure of the actinic reflection source of prior art medium ultraviolet.
Fig. 4 shows the structural representation of ultraviolet light transmission light source involved in the present invention.
Fig. 5 shows the sectional schematic diagram of the image read-out in the first embodiment involved in the present invention.
Fig. 6 shows the output characteristics figure of ultraviolet light transmission light source involved in the present invention.
Fig. 7 shows the sectional schematic diagram of the image read-out in the second embodiment involved in the present invention.
Reference numeral: 1-first framework, 2-glass plate, 31-ultraviolet light sexual reflex light source, 32-ultraviolet light array light source, 4-lens arra, 5-photoelectric conversion part, 6-sensor base plate, 7-original copy, 8-emitter units, 81-substrate, 82-ultraviolet LED, 9-connecting portion, 10-light conductor, the plane of incidence of 11-light, 12-exiting surface, the reflecting surface of 13-light, 14-reflective membrane, 15-second framework, A-ultraviolet light transmission light source, the read pixel scope of x-image read-out, the output valve of each pixel of y-image read-out.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As shown in Figure 4, ultraviolet light transmission light source A involved in the present invention comprises two emitter units, 8, two connecting portions, 9, light conductor 10 and some reflective membranes 14, wherein each emitter units 8 includes luminescent device and carries the substrate 81 of described luminescent device, and concrete described luminescent device is ultraviolet LED 82; The both ends of the surface of described light conductor 10 are set to the plane of incidence 11 of light, the body of described light conductor 10 is provided with the reflecting surface 13 of exiting surface 12 and light, each emitter units 8 is connected through the plane of incidence 11 of connecting portion 9 with the light of described light conductor 10 respectively, and described ultraviolet LED 82 is arranged on the substrate 81 just to the plane of incidence 11 of the light of described light conductor 10, and the reflecting surface 13 of the light of described light conductor 10 posts described reflective membrane 14.
The material composition of light conductor involved in the present invention comprises the PMMA(polymethyl methacrylate of light transmittance more than 50%) and light stabilizer, and not containing the additive component of any Absorbable rod ultraviolet light.The main component of described reflective membrane 14 is aluminium foil, and for preventing light, particularly ultraviolet light shoots out from other non-exiting surfaces 12, and causes unnecessary loss of light source.
Embodiment 1
In concrete application process, ultraviolet light transmission light source A involved in the present invention can be used as the transmitted light source of image read-out, as shown in Figure 5, the shape of described light conductor 10 cross section is six shapes in the present embodiment, and the shape of described exiting surface 12 is plane.The structure of concrete image read-out is: the both sides of original copy 7 are respectively equipped with the first framework 1 and the second framework 15, lens arra 4 is provided with in described first framework 1, the top of described lens arra 4 is provided with glass plate 2, the below of described lens arra 4 is provided with photoelectric conversion part 5, and the below of described photoelectric conversion part 5 is provided with sensor base plate 6; Described ultraviolet light transmission light source A is arranged in the second framework 15, and described exiting surface 12 is just to described lens arra 4.In the present embodiment, described ultraviolet light transmission light source A and described photoelectric conversion part 5 are all adjustable apart from the distance of original copy 7.
The concrete course of work is: the ultraviolet LED 82 controlled in described emitter units 8 is luminous, ultraviolet light passes in described light conductor 10 by described connecting portion 9, ultraviolet light in described light conductor 10 owing to being subject to the protection of described reflective membrane 14, in beam propagation, outwards penetrate eventually through described exiting surface 12, described exiting surface 12 limits the diversity of light; The ultraviolet lighting penetrated by described exiting surface 12 is mapped on original copy 7, anti-counterfeiting substances on described original copy 7 is inspired visible ray under the irradiation of ultraviolet light, glass plate 2 described in above-mentioned visible light-transmissive and lens arra 4 are irradiated to photoelectric conversion part 5, and described photoelectric conversion part 5 exports after converting the light signal received to the signal of telecommunication.
The ultraviolet lighting that ultraviolet light transmission light source A involved in the present invention sends is mapped on original copy 7, and the double-edged anti-counterfeiting substances of original copy 7 all can be inspired visible ray, therefore improves the utilization ratio of ultraviolet light transmission light source A.As shown in Figure 6, the output characteristic of ultraviolet light transmission light source A involved in the present invention is better, in the read pixel scope (abscissa x) of image read-out, the output valve (ordinate y) of each pixel is comparatively consistent, and that is the output characteristic of ultraviolet light transmission light source A is better.
Embodiment 2
In concrete application process, ultraviolet light transmission light source A involved in the present invention can be used as the transmitted light source of image read-out, as shown in Figure 7, the shape of described light conductor 10 cross section is circular in the present embodiment, and the shape of described exiting surface 12 is arc surface.The structure of concrete image read-out and operation principle identical with the image read-out in embodiment 1, do not repeat at this.
Claims (7)
1. a ultraviolet light transmission light source, it is characterized in that: comprise two emitter units, two connecting portions, a light conductor and some reflective membranes, wherein each emitter units includes luminescent device and carries the substrate of described luminescent device, and described luminescent device is ultraviolet LED; The both ends of the surface of described light conductor are set to the plane of incidence of light, the body of described light conductor is provided with the reflecting surface of exiting surface and light, each emitter units is connected through the plane of incidence of connecting portion with the light of described light conductor respectively, and described ultraviolet LED is arranged on the substrate just to the plane of incidence of the light of described light conductor, and the reflecting surface of the light of described light conductor posts reflective membrane.
2. ultraviolet light transmission light source according to claim 1, is characterized in that: the material composition of described light conductor comprises the polymethyl methacrylate of light transmittance more than 50% and light stabilizer, and not containing the additive component of any Absorbable rod ultraviolet light.
3. ultraviolet light transmission light source according to claim 1, is characterized in that: the composition of described reflective membrane comprises aluminium foil.
4. ultraviolet light transmission light source according to claim 1, is characterized in that: the shape of described light conductor cross section is six shapes, and the shape of described exiting surface is plane.
5. ultraviolet light transmission light source according to claim 1, is characterized in that: the shape of described light conductor cross section is for circular, and the shape of described exiting surface is arc surface.
6. one kind comprises the image read-out of ultraviolet light transmission light source according to claim 1, it is characterized in that: comprise the first framework and the second framework, and described first framework and the second framework are separately positioned on the both sides of original copy, lens arra is provided with in described first framework, the top of described lens arra is provided with glass plate, the below of described lens arra is provided with photoelectric conversion part, and the below of described photoelectric conversion part is provided with sensor base plate; Be provided with ultraviolet light transmission light source in described second framework, and the exiting surface of described ultraviolet light transmission light source is just to described lens arra.
7. image read-out according to claim 6, is characterized in that: described ultraviolet light transmission light source and described photoelectric conversion part all adjustable from the distance of described original copy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586752.5A CN105141802A (en) | 2015-09-16 | 2015-09-16 | Ultraviolet light transmission light source and image reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586752.5A CN105141802A (en) | 2015-09-16 | 2015-09-16 | Ultraviolet light transmission light source and image reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105141802A true CN105141802A (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510586752.5A Pending CN105141802A (en) | 2015-09-16 | 2015-09-16 | Ultraviolet light transmission light source and image reading device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105141802A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800914A (en) * | 2016-09-06 | 2018-03-13 | 株式会社东芝 | Light source cell, image processing apparatus and image processing system |
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| CN204906505U (en) * | 2015-09-16 | 2015-12-23 | 威海华菱光电股份有限公司 | Ultraviolet ray transmitted light source and image reading device |
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2015
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1882029A (en) * | 2005-06-14 | 2006-12-20 | 株式会社理光 | Optical irradiation apparatus, image reading apparatus using the same, and image forming apparatus using the same |
| CN101257551A (en) * | 2007-03-01 | 2008-09-03 | 三菱电机株式会社 | Image sensor |
| CN101277359A (en) * | 2007-03-28 | 2008-10-01 | 三菱电机株式会社 | Line illumination device and image input apparatus using the same |
| CN101634427A (en) * | 2008-07-25 | 2010-01-27 | 优志旺电机株式会社 | Light guide body and linear light source device |
| CN201374756Y (en) * | 2009-02-12 | 2009-12-30 | 亚泰影像科技股份有限公司 | Light guiding system for contact-type image sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800914A (en) * | 2016-09-06 | 2018-03-13 | 株式会社东芝 | Light source cell, image processing apparatus and image processing system |
| CN107800914B (en) * | 2016-09-06 | 2020-02-18 | 株式会社东芝 | Light source unit, image processing apparatus, and image processing system |
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Application publication date: 20151209 |
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