CN101194370A - Light emitting unit and lighting apparatus and image scanner using such light emitting unit - Google Patents
Light emitting unit and lighting apparatus and image scanner using such light emitting unit Download PDFInfo
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- CN101194370A CN101194370A CNA2006800189680A CN200680018968A CN101194370A CN 101194370 A CN101194370 A CN 101194370A CN A2006800189680 A CNA2006800189680 A CN A2006800189680A CN 200680018968 A CN200680018968 A CN 200680018968A CN 101194370 A CN101194370 A CN 101194370A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
- H01L2224/85909—Post-treatment of the connector or wire bonding area
- H01L2224/8592—Applying permanent coating, e.g. protective coating
Abstract
To provide a light emitting unit which can efficiently emit light irrespective of opening window shape of a light emitting element substrate frame material, and a lighting apparatus, an image sensor and an image scanner using such light emitting unit. The light emitting unit is provided with a light emitting element; a light emitting element substrate whereupon the light emitting element is mounted; and the light emitting element substrate frame material having an opening window for exposing the light emitting element. The inside of the opening window is sealed with a first resin and a second resin, and a ratio of the first resin to the second resin becomes smaller as it goes to a light emitting window external from the light emitting window inside. The first resin is a transparent resin and the second resin is a colored resin having a high luminosity or a resin including a light reflecting and/or scattering material. Since a cross section boundary between the first resin and the second resin is a curved line, among the light emitted from the light emitting element, the light reflected on an opening window bottom plane can be also efficiently projected to the external.
Description
Technical field
The present invention relates to a kind of luminescence unit, be used to be equipped with the light-emitting device or the line illuminator of the illumination, automobile, industrial equipment of this luminescence unit, general consumer device etc. and the image read-out that this line illuminator is housed.
Background technology
Imageing sensor is loaded on picture unit, photocopier, image-scanning device etc. in order in the image read-out that reads original copy.Imageing sensor has closing-type and scaled-down version, no matter but which kind of type all has the line illuminator that spreads all over main sweep limits and illumination original copy surface, linearity ground.
And it is well-known using the line illuminator of light conductor.For example, the spy opens flat 8-163320 communique and spy and opens flat 10-126581 communique (No. 2999431 communique of patent) and record line illuminator that uses bar-shaped or tabular light conductor and the image read-out that uses this lighting device.
Above-mentioned line illuminator is by while making from the light of surface feeding sputtering in the inner face reflection, constitute from the light conductor of the exit facet outgoing of setting alongst and the luminescence unit of being located at the end face side of this light conductor.Opening the 2003-23525 communique as the spy puts down in writing, luminescence unit as shown in Figure 4, be provided with the rectangular aperture window 21a that is provided with on the resin system light emitting element substrate framework 21 of lead frame 22 in order to loading light- emitting component 23a, 23b, 23c, lead frame 22 has as the lead terminal portion of external connection terminals and inner lead portion and the light-emitting component that is exposed in the openning and loads connecting portion 22b, and light-emitting component is bonded on the lead frame that is exposed in the openning, and the electrode of light-emitting component is connected with metal wire with lead frame, and openning then seals with transparent resin.
Te Kaiping 11-136449 communique (No. 3101240 communique of patent) records such luminescence unit, this luminescence unit is formed with the conical surface of inclination at a predetermined angle, so that the side wall surface of openning portion enlarges towards light emitting element substrate framework surface from the light-emitting component loading part.
Figure 15, Figure 16 are the cutaway view and the vertical views of the openning of the traditional luminescence unit of expression, and Figure 15 is the cutaway view at CC ' line place among Figure 16, and light-emitting component 23 usefulness metal wires 24 are connected with electrode.Openning is inner with transparent resin 25 sealings.Light- emitting component 23a, 23b, 23c send the light of redness, green, blueness respectively.Arrow among Figure 15 is represented from the light of light-emitting component outgoing.With compare towards the light of openning top outgoing, towards the light of horizontal outgoing difficulty shine the openning outside, thereby can't effectively utilize emergent light.
Figure 17 is the cutaway view of the openning of another routine traditional luminescence unit of expression.The cross sectional shape of openning forms the trapezoidal of broadness in exiting side, therefore the laterally also outgoing effectively of light of reflection.Yet, owing to be difficult to be reflected at the light of peristome bottom, so not talkative all emergent lights that effectively utilized light-emitting component.
Patent documentation 1: the spy opens flat 8-163320 communique
Patent documentation 2: the spy opens flat 10-126581 communique
Patent documentation 3: the spy opens the 2003-23525 communique
Patent documentation 4: the spy opens flat 11-136449 communique
Summary of the invention
If the side wall surface of openning portion is vertical as shown in figure 15, then can't effectively utilize from the light of light-emitting component outgoing in the light of horizontal outgoing.On the other hand,, form the conical surface that tilts at a predetermined angle, make of the exit facet expansion of the side wall surface of openning portion, then can effectively utilize light in horizontal outgoing towards luminescence unit if as shown in figure 17.Yet,, therefore have the problem that can't effectively utilize light fully owing to be difficult to reverberation near the side wall portion bottom.
In addition, sometimes adopt light conductor with the reduced width of the sub scanning direction of exit facet based on the reason in the design that improves illumination efficiency and image read-out, but because the restriction in the design etc., sometimes have to the area of section of light conductor incident end face is also dwindled, to dwindle the width of above-mentioned exit facet.If dwindle the area of section of light conductor incident end face, then have the situation of the area of light conductor incident end face less than the openning size.So, light can spill from gap portion, the problem that causes brightness to reduce.
In addition, recently in order to increase the luminous quantity of light-emitting component, attempt light-emitting component is maximized.Along with the maximization of light-emitting component, openning portion also must design greatlyyer.Openning portion is once expansion, and openning portion will be greater than the light conductor incident end face, thereby produces the problem from the gap light leak.
In order to address the above problem, luminescence unit of the present invention is provided with: light-emitting component; Load the light emitting element substrate of above-mentioned light-emitting component; And has a light emitting element substrate framework in order to the openning that exposes above-mentioned light-emitting component, it is characterized in that: above-mentioned openning is inner with first resin and second resin-sealed, and above-mentioned second resin reduces to the openning outside from above-mentioned openning inside with respect to the ratio of above-mentioned first resin.Above-mentioned first resin is a transparent resin, and above-mentioned second resin is the colouring resin of high brightness, or contains the resin of light reflection and/or scattering material.The cross sectional boundary of above-mentioned first resin and second resin is curve preferably.In addition, the cross sectional shape of above-mentioned openning is rectangle preferably, or narrower trapezoidal of open side.
The present invention is to use the lighting device of above-mentioned luminescence unit, makes from the light of the luminescence unit incident of the end face side of the length direction of being located at bar-shaped light guide on one side in the inner face reflection of above-mentioned bar-shaped light guide, on one side exit facet outgoing from alongst being provided with.In addition, the area of section of above-mentioned bar-shaped light guide incident end face is preferably less than the base area of above-mentioned openning.
The present invention is to use the lighting device of above-mentioned luminescence unit, make from the light of the luminescence unit incident of the side of being located at tabular light conductor thickness direction on one side in the inner face reflection of above-mentioned tabular light conductor, on one side above above-mentioned tabular light conductor or below outgoing.
Moreover, the present invention also comprises imageing sensor and image read-out, the former feature is that above-mentioned lighting device, line image transducer and the optical system in order to being focused at above-mentioned line image transducer from the reverberation or the transmitted light of original copy are housed on framework, and the latter's feature is that above-mentioned imageing sensor is housed.
According to the present invention, because the ratio of second resin and first resin reduces to the openning outside from openning inside, so the light that is easy under the state of the enlarged areas of opening portion light-emitting component be sent is taken to the outside, can effectively utilize light.
According to the present invention,, therefore change the design of side wall surface easily because that the side wall surface of openning forms inclination outwardly by first resin and second resin is oblique.
According to the present invention, because the cross sectional boundary of first resin and second resin is a curve, therefore the light that can distribute light-emitting component to send expeditiously increases luminous quantity.
According to the present invention,,, also can make whole light incident light conductors even if therefore use the light emitting element substrate that is provided with large-sized luminous element because the cross sectional shape of openning forms narrower trapezoidal of open side.
The luminescence unit of the application of the invention can provide a kind of outgoing light quantity big lighting device.
Description of drawings
Fig. 1 is the cutaway view that the contact image sensor of line illuminator of the present invention is housed.
Fig. 2 is the decomposition diagram of line illuminator.
Fig. 3 is the perspective view that expression one example is formed at the light scattering pattern at the light conductor back side.
Fig. 4 is the front view of luminescence unit.
Fig. 5 is the side sectional view of luminescence unit.
Fig. 6 is that the structure of the lead frame of expression luminescence unit sees through view.
Fig. 7 is the cutaway view of another embodiment of expression contact image sensor.
Fig. 8 is the decomposition diagram of lighting device that the contact image sensor of Fig. 7 is housed.
Fig. 9 is the schematic diagram of the structure of scaled-down version imageing sensor.
Figure 10 is the cutaway view of embodiment of the openning of expression luminescence unit of the present invention.
Figure 11 is the cutaway view of another embodiment of the openning of expression luminescence unit of the present invention.
Figure 12 is the cutaway view of another embodiment of the openning of expression luminescence unit of the present invention.
The cutaway view of an embodiment again of the openning of Figure 13 (A) expression luminescence unit of the present invention,
Figure 13 (B) is to use the perspective view of the lighting device of luminescence unit of the present invention.
Figure 14 is the vertical view of the openning part of luminescence unit of the present invention.
Figure 15 is the cutaway view of the openning part of traditional luminescence unit.
Figure 16 is the vertical view of the openning part of traditional luminescence unit.
Figure 17 is the cutaway view of the openning part of traditional luminescence unit.
Embodiment
Below, embodiments of the invention are described with reference to the accompanying drawings.
Fig. 1 is the cutaway view that the image read-out of line illuminator is housed, and Fig. 2 is the decomposition diagram of line illuminator, and Fig. 3 is the perspective view that expression one example is formed at the light scattering pattern at the light conductor back side.
As shown in Figure 1, image read-out is made of imageing sensor, glass plate and the framework of taking in them.Imageing sensor is formed with each recess 1a, 1b, 1c on the framework 1 of imageing sensor, be provided with line illuminator 10 at recess 1c, at recess 1b the sensor base plate 4 that photoelectric conversion element array 3 is housed is set, the column lens array 5 that equimultiple imaging is used also has been installed in framework 1.The top of framework 1 is provided with glass plate 2.And, shine original copy G from the light of the exit facet 11b outgoing of line illuminator 10 by glass plate 2, and detect from the reverberation of original copy reflection, thereby read original copy G via the lens arra 5 usefulness photoelectric conversion element arrays 3 of erecting equal-magnification imaging system.The erecting equal-magnification imaging system can be used column lens array or flat sheet type micro-lens array etc.In addition, move with respect to the sub scanning direction of glass plate 2, the zone of wanting of original copy G is read at Fig. 2 by the framework 1 that makes imageing sensor.
As shown in Figure 2, line illuminator 10 is filled in white light conductor box 12 with light conductor 11, and exit facet 11b is exposed.In addition, an end of light conductor box 12 has been installed the luminescence unit of the one or more light-emitting components (for example light-emitting diode) 23 that have as light emitting source.Light conductor 11 is made of translucent materials such as glass or acrylate, the basic configuration in the cross section on the direction vertical with main scanning direction (length direction) is a rectangle, and makes the bight that is made of face 11a that is provided with scattering pattern and side 11c and form C shape chamfering shape by the bight that face 11a and face 11d constitute.
As shown in Figure 3, light conductor 11 back sides form the light scattering pattern 20 of the light that sends from the light emitting source of plane of incidence incident in order to scattering, above-mentioned light scattering pattern 20 by whitewash screen printing or form formation such as concavo-convex.
To be light that light emitting source is sent import in the light conductor 11 from the end (plane of incidence) of light conductor 11 line illuminator 10, is transmitted in light in the light conductor 11 by light scattering pattern 20 scatterings that are formed at the light conductor back side, again from this scattered light of exit facet 11b outgoing.
Big from the light intensity of light emitting source incident in the nearside intensity of the plane of incidence, just die down and get over distance light intensity from the plane of incidence.As shown in Figure 3, along with far away more from the plane of incidence, the formation zone of light scattering pattern is also wide more, thereby spreads all over total length in main scanning direction equably from the light of exit facet 11b outgoing.
As shown in Figures 1 and 2, cover light conductor 11 with light conductor box 12 and protect light conductor 11, and can prevent to send scattered light with wasting, thereby increase the outgoing light intensity to the leaded light external body.
Fig. 4 is the front view of luminescence unit, and Fig. 5 is the side sectional view of luminescence unit, Fig. 6 be the expression luminescence unit lead frame structure see through view.
Make on the base plate resin owing to light emitting element substrate framework 21 embeds lead frame 22 to form in, therefore be provided with in order to load the openning 21a of light-emitting component 23 (23a, 23b, 23c).Lead frame 22 by be exposed to light-emitting component 23 with from part (lead terminal portion) 22a of externally fed, be exposed in the openning 21a and constitute with part (light-emitting component loading connecting portion) 22b that loads light-emitting component 23 and part (inner lead portion) 22c that is hidden in the base plate resin.In addition, the electroplate of lead frame 22 is to increase the reflection of light rate and to improve wire bonds.
Figure 10 is the cutaway view of openning.Light-emitting component 23 utilizes metal wire 24 to be connected to electrode, and the cross section of its openning part is a rectangle.The openning inner filling has first resin 25 and second resin 26.Second resin 26 reduces towards openning top with respect to the area of section ratio of first resin 25.In addition, first resin 25 is the transparent resins that can see through from the light of light-emitting component 23 outgoing, but and second resin 26 is high brightness colouring resins of reflect/scatter light, and white resin preferably.Second resin can use silicones etc.In addition, second resin also can use transparent resin that contains light reflecting material/scattering material etc.
Here, in first resin 25 and second resin 26, also can contain the fluorescent material that light that the available light-emitting component that loads sends carries out wavelength conversion from the present invention.This fluorescent material can use following substances.
(fluorescent material)
Fluorescent material can be the light that absorption sends from the semiconductor light-emitting elements chip and wavelength Conversion is become the material of different wave length.For example, this fluorescent material preferably is selected from main nitride-based fluorophor, the oxynitride based phosphor of living of composing with lanthanide series such as Eu, Ce; Mainly compose the alkali earths halogen apatite fluorescent body of living with transition metal series elements such as group of the lanthanides such as Eu, Mn; Alkaline-earth metal boric acid halogen fluorophor; The alkaline-earth metal chlorate MClO 3 fluorescent substance; Alkali earths silicate; Alkali earths sulfide; The alkali earths thiogallate; The alkali earths silicon nitride; The germane hydrochlorate; Mainly compose the terres rares aluminate of living with lanthanide series such as Ce; The main tax with lanthanide series such as terres rares silicate or Eu more than the organic and organic complex of living etc. at least a.Can use following fluorophor as concrete example, but be not limited to this.
Mainly compose the nitride-based fluorophor of living and have M with lanthanide series such as Eu, Ce
2Si
5N
8: Eu (M is selected from more than Sr, Ca, Ba, Mg, Zn at least a) etc.In addition, remove M
2Si
5N
8: beyond the Eu, MSi is arranged also
7N
10: Eu, M
1.8Si
5O
0.2N
8: Eu, M
0.9Si
7O
0.1N
10: Eu (M is selected from more than Sr, Ca, Ba, Mg, Zn at least a) etc.
Mainly compose the oxynitride based phosphor of living MSi is arranged with lanthanide series such as Eu, Ce
2O
2N
2: Eu (M is selected from more than at least a among Sr, Ca, Ba, Mg, the Zn) etc.
Mainly compose the alkali earths halogen apatite fluorescent body of living M is arranged with transition metal series elements such as group of the lanthanides such as Eu, Mn
5(PO
4)
3(M is selected from more than at least a among Sr, Ca, Ba, Mg, the Zn X:R.X is selected from more than at least a among F, Cl, Br, the I.R is selected from more than among Eu, Mn, Eu and the Mn any.) etc.
Alkaline-earth metal boric acid halogen fluorophor has M
2B
5O
9(M is selected from more than at least a among Sr, Ca, Ba, Mg, the Zn X:R.X is selected from more than F, CI, Br, I at least a.R is selected from more than among Eu, Mn, Eu and the Mn any.) etc.
The alkaline-earth metal chlorate MClO 3 fluorescent substance has SrAl
2O
4: R, Sr
4Al
14O
25: R, CaAl
2O
4: R, BaMg
2Al
16O
27: R, BaMg
2Al
16O
12: R, BaMgAl
10O
17: (R is selected from more than among Eu, Mn, Eu and the Mn any R.) etc.
The alkali earths sulphide phosphor has La
2O
2S:Eu, Y
2O
2S:Eu, Gd
2O
2S:Eu etc.
Mainly composing the terres rares chlorate MClO 3 fluorescent substance of living with lanthanide series such as Ce has with Y
3Al
5O
12: Ce, (Y
0.8Gd
0.2)
3Al
5O
12: Ce, Y
3(Al
0.8Ga
0.2)
5O
12: Ce, (Y, Gd)
3(Al, Ga)
5O
12The YAG class fluorophor etc. of chemical formulation.In addition, a part of or whole Tb that replaces Y with Tb, Lu etc. is also arranged
3Al
5O
12: Ce, Lu
3Al
5O
12: Ce etc.
Other fluorophor has ZnS:Eu, Zn
2GeO
4: Mn, MGa
2S
4: (M is selected from more than at least a among Sr, Ca, Ba, Mg, the Zn Eu.X is selected from more than at least a among F, Cl, Br, the I.) etc.
Above-mentioned fluorophor also can replace Eu as required and comprise or add in addition outside Eu and be selected among Tb, Cu, Ag, Au, Cr, Nd, Dy, Co, Ni, the Ti more than one.
In addition, also can use above-mentioned fluorophor fluorophor in addition, that have identical performance, effect.These fluorophor can use by the exciting light of semiconductor light-emitting elements chip at the fluorophor yellow, red, green, that blue region has luminescent spectrum, in addition, also can use Neutral colour i.e. yellow, blue-green, the fluorophor with luminescent spectrum such as orange at them.By using the myriad combinations of these fluorophor, can make light-emitting device with all glow colors.
For example, use the GaN compounds semiconductor light-emitting elements chip that sends blue light, irradiation Y
3Al
5O
12: Ce or (Y
0.8Gd
0.2)
3Al
5O
12: the YAG class fluorophor of Ce, carry out wavelength Conversion again.Thereby, a kind of light that will send from the semiconductor light-emitting elements chip can be provided and mix and send the light-emitting device of white light from the light that YAG class fluorophor sends.
For example, a kind of light-emitting device that sends the good white light of colour rendering can be provided, and its means are to be used in the fluorophor that GaN compounds semiconductor light-emitting elements chip irradiation that ultraviolet region has a peak luminous wavelength is made of following each several part and to make it to absorb: become the CaSi that sends gold-tinted from sending green glow
2O
2N
2: Eu or SrSi
2O
2N
2: Eu; As fluorophor send blue light (Sr, Ca)
5(PO
4)
3Cl:Eu, send ruddiness (Ca, Sr)
2Si
5N
8: Eu.Because this device uses as trichromatic red, blue, green, therefore only need to change the mixed proportion of fluorophor, can realize desired white light.
Figure 11 is the cutaway view of the openning of another embodiment of expression.Be provided with second resin 26, the lead-in wire 24 of covering luminous element 23 until the position that is close to light-emitting component 23.Thus, can dwindle the area of openning bottom surface portions, therefore can make from the most emergent light of light-emitting component outgoing and reflect, and shine the openning outside at the side wall portion that constitutes by second resin.In addition, as shown in figure 11, the cross sectional boundary of first resin and second resin is made as curve, then near the easier openning top that shines of light the bottom surface.
Figure 12 is the cutaway view of the openning of the another embodiment of expression.Large-sized luminous element 23d is the light-emitting component of size greater than conventional luminescent device.Therefore, openning is also greater than traditional size, and the area of openning bottom is also greater than the incident end face 15 of light conductor.In addition, the sidewall of openning forms the inverted cone surface of inclination, and can dwindle peristome towards openning top, so that light conductor incident end face 15 is consistent generally with the size of the opening portion on openning top.When side walls is back taper, because interior lights can't shine the outside efficiently, therefore fill second resin, equate with the area of bottom with the area that makes openning top at least.
Figure 13 (A) is the cutaway view that another embodiment of large-sized luminous element is adopted in expression.Identical with Figure 12, second resin is filled to the position that covers line 24.Because the cross sectional boundary of first resin 25 and second resin 26 is a curve, the light of openning bottom is reflected at side wall portion, and can make the light outgoing expeditiously.Figure 13 (B) is the perspective view that adopts the lighting device of large-sized luminous element.Figure 14 is a vertical view of seeing the openning of Figure 13 (A) from openning top.Figure 10,11,12,13 (A) is the cutaway view at AA ' line place among Figure 14, and the cross section at BB ' line place also is of similar shape.
First resin and second resin can be filled in the openning of the light emitting element substrate framework that has been shaped, also second resin and light emitting element substrate framework can be formed separately.That is, also can be in advance with second resin form can chimeric openning shape, more above-mentioned second resin that has been shaped is loaded on openning inside.The method of assembling can be concavo-convex chimeric, also can be bonding with bonding agent.
Fig. 7 is the cutaway view of another embodiment of presentation video reading device, Fig. 8 is the decomposition diagram that is loaded on the lighting device of Fig. 7, in image read-out shown in Figure 7, detect from the reverberation of original copy G reflection through lens arra 5 and by photoelectric conversion element array 3, thereby read original copy G, but in this embodiment, except above-mentioned functions, also lighting device 30 can be disposed at the top of OHP original copy G etc., read the transmitted light of original copy G with photo-electric conversion element 3.These embodiment are identical with the reading device of Fig. 1, are framework 1 is moved with respect to glass plate 2, thus the zone of wanting of reading original copy G.
Above-mentioned lighting device 30 is equipped with luminescence unit 20 in the thickness direction side of the tabular light conductor 31 that is made of the transparent propene acid resin, above-mentioned tabular light conductor 31 is accommodated in the white box 32, and above the formation reflecting surface, be provided with white reflecting plate 33, below the formation exit facet, be provided with scattering thin slice 34.
More than show the embodiment of closing-type imageing sensor (contact image sensor), but lighting device of the present invention also can be used for the scaled-down version imageing sensor.As shown in Figure 9, the image read-out 9 usefulness lighting devices 10 of use scaled-down version imageing sensor 8 shine the original copy on the original platforms such as being positioned over glass, by the light of speculum 7 reflections, and, detect with photo-electric conversion element 3 again by lens 6 convergences from the reflection of original copy face.
Have again, in the scaled-down version imageing sensor, so-called image sensing portion only means photo-electric conversion element 3 sometimes, and the image sensing portion in this specification then means in the scaled-down version imageing sensor part by lighting device, speculum, photo-electric conversion element and lens constituted.
Claims (12)
1. luminescence unit, comprising: light-emitting component; Load the light emitting element substrate of described light-emitting component; And be provided with light emitting element substrate framework in order to the openning that exposes described light-emitting component, it is characterized in that:
Described openning is inner with first resin and second resin-sealed,
Described second resin reduces towards the openning outside from described openning inside with respect to the ratio of described first resin.
2. luminescence unit as claimed in claim 1 is characterized in that: described first resin is a transparent resin, and the colouring resin that described second resin is a high brightness.
3. luminescence unit as claimed in claim 1 is characterized in that: described first resin is a transparent resin, and described second resin is the resin that contains light reflection and/or scattering material.
4. as each described luminescence unit in the claim 1 to 3, it is characterized in that: the cross sectional boundary between described first resin and described second resin is a curve.
5. as each described luminescence unit in the claim 1 to 4, it is characterized in that: the cross sectional shape of described openning is a rectangle.
6. as each described luminescence unit in the claim 1 to 4, it is characterized in that: the cross sectional shape of described openning is narrow trapezoidal of open side.
7. lighting device, it is characterized in that: Yi Bian make from the inner face reflection of the light of the luminescence unit incident of the end face side of the length direction of being located at bar-shaped light guide at bar-shaped light guide, exit facet outgoing from alongst being provided with on one side, described luminescence unit is each specific unit in the claim 1 to 6.
8. lighting device as claimed in claim 7 is characterized in that: the sectional area of the light incident side end face of described bar-shaped light guide is less than the area of described openning bottom surface.
9. lighting device, it is characterized in that: Yi Bian make from the inner face reflection of the light of the luminescence unit incident of the side of being located at tabular light conductor thickness direction at tabular light conductor, on one side above tabular light conductor or below outgoing, described luminescence unit is each specific unit in the claim 1 to 6.
10. an imageing sensor is characterized in that: claim 7 or 8 described lighting devices, photoelectric conversion element array and the optical system in order to converging to described photoelectric conversion element array from the reverberation or the transmitted light of original copy are housed on framework.
11. an image read-out is characterized in that: the described imageing sensor of claim 10 is housed.
12. an image read-out is characterized in that: comprise imageing sensor, in order to the transparent body of placing original copy and the lighting device of being located at described transparent body top, described lighting device is the specific device of claim 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005107062 | 2005-04-04 | ||
| JP107062/2005 | 2005-04-04 | ||
| JP071379/2006 | 2006-03-15 |
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| Publication Number | Publication Date |
|---|---|
| CN101194370A true CN101194370A (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800189680A Pending CN101194370A (en) | 2005-04-04 | 2006-04-03 | Light emitting unit and lighting apparatus and image scanner using such light emitting unit |
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| CN109980071A (en) * | 2017-12-22 | 2019-07-05 | 日亚化学工业株式会社 | Light emitting device |
| CN109980071B (en) * | 2017-12-22 | 2024-04-26 | 日亚化学工业株式会社 | Light emitting device |
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2006
- 2006-04-03 CN CNA2006800189680A patent/CN101194370A/en active Pending
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| CN109659334B (en) * | 2013-05-28 | 2023-05-02 | 索尼公司 | Display device and electronic apparatus |
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