CN1750585A - Bar-shaped light guide, illumination unit and image-scanning device - Google Patents
Bar-shaped light guide, illumination unit and image-scanning device Download PDFInfo
- Publication number
- CN1750585A CN1750585A CN 200510106768 CN200510106768A CN1750585A CN 1750585 A CN1750585 A CN 1750585A CN 200510106768 CN200510106768 CN 200510106768 CN 200510106768 A CN200510106768 A CN 200510106768A CN 1750585 A CN1750585 A CN 1750585A
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- bar
- light guide
- light
- shaped light
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- 238000005286 illumination Methods 0.000 title description 11
- 239000004020 conductor Substances 0.000 claims description 36
- 238000000149 argon plasma sintering Methods 0.000 claims description 20
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000004544 sputter deposition Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract 1
- 238000004020 luminiscence type Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Images
Landscapes
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Planar Illumination Modules (AREA)
- Facsimile Scanning Arrangements (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Facsimile Heads (AREA)
Abstract
A bar-shaped light guide is provided to allow its emitting surface to be exposed from a white casing and is provided with a pattern for scattering and reflecting the light on a bottom surface opposite to the emitting surface. This pattern is formed by a white paint or minute irregularities. Further, an end face of the bar-shaped light guide opposite to the incident side is made cube-corner shaped. In other words, the end face is made chevroned by mirror-finished flat surfaces. These flat surfaces are tilted at such an angle that an incident angle theta of the rays of light traveling through the bar-shaped light guide parallel to the longitudinal direction of the bar-shaped light guide is smaller than a critical angle.
Description
Technical field
The present invention relates to a kind of bar-shaped light guide that will penetrate from the outgoing plane that alongst is provided with, the lighting unit that combination has this light conductor and light source, the image read-out of having assembled this lighting unit from the light of a surface feeding sputtering.
Background technology
In the employed bar-shaped light guide, most cases is the luminescence unit that LED and so on only is set at an end of bar-shaped light guide in the part of the image read-out of fax, photocopier, scanning means etc.So only at one end on the side under the situation of configuration luminescence unit,, must need from outgoing plane and penetrate the countermeasure even and light that illumination is not low though that the quantity of luminescence unit tails off is favourable to heating problem and cost etc.
Therefore, following technical scheme is disclosed in Patent Document 1, promptly the end face with the incident end face opposition side becomes minute surface, and on the outside of this opposition side end face configuration reflection efficiency high member, thereby going into to inject light conductor light inner and the opposite survey of arrival end face by an end face side reflects towards light incident side, by carrying out this operation repeatedly, with incident ray all as from the irradiates light of light scattering figure and exhaust.
Following technical scheme is disclosed in Patent Document 2, promptly on the one hand by using the asperities in cross section to reduce cost as former state the plane of incidence and opposition side end face, on the other hand by enlarging near the light scattering figure of part this end face, when arriving the end face of described opposition side, most of thus incident ray exhausts as scattered light.
In Patent Document 3, disclose following technical scheme, promptly on the end face of incident end face and opposition side, apply whitewash, make the light scattering that arrives this end face thus.In addition, though the technical field that bar-shaped light guide is not associated discloses the right-angle prism type speculum of the reflection that is used to circulate in Patent Document 4.
In addition, as employed linear lighting device (lighting unit) in the part of the image read-out of fax, photocopier, scanning means etc., most cases is that bar-shaped light guide is accommodated in the white shell.And as the structure that prevents after taking in that bar-shaped light guide from dropping out and ring at inner click click from housing, known have a disclosed structure in the described Patent Document 2,3.
In the disclosed structure, on the side except the side that has formed bar-shaped light guide light scattering figure, form concave shaped portion in Patent Document 2 (Fig. 6), the Patent Document 3 (Fig. 4), can in this concave shaped portion, assemble the card claw stop that forms on the surface in the enclosure.
[Patent Document 1] spy opens flat 8-163320 communique
[Patent Document 2] spy opens flat 10-126581 communique
[Patent Document 3] spy opens flat 11-84544 communique
No. 2954709 communique of [Patent Document 4] special permission
Above-mentioned light conductor is accommodated in the white shell, makes outgoing plane expose, and is installed in the image read-out by this way.In addition, as the material of light conductor, can use the high acrylic resin of transparency, sheathing material can be coughed up cheap resin by the use valency.
In addition, because the image read-out of fax, photocopier, scanning means etc. can cause that temperature raises when carrying, during keeping etc., so, also be necessary to consider thermal expansion difference even light conductor has been accommodated in the shell.But, linear lighting device is placed in the high temperature back will make the shrinkage of light conductor very big because of the difference of above-mentioned material once cooling, on the end face of light conductor especially and be provided with between the end face of luminescence unit one side opposition side and the inner surface of outer cover and form the gap.In addition except that the difference of coefficient of thermal expansion, because making error etc. also form the gap easily.
When forming the gap like this,, turn back to a distolateral light by reflection and do not see through reflectingly at the end face of opposition side even in situation very close to each other, surface scattering in the enclosure, the light of process scattering penetrates near the end face of opposite survey.For this reason, compare illumination with other place near the end face of opposition side and become high singularly.Become under the situation of minute surface this tendency clearly at the end face shown in Patent Document 1 with the luminescence unit opposition side.
In addition, according to disclosed structure in Patent Document 2 and the Patent Document 3, make the illumination efficiency variation.
Figure 12 is illustrated in the concave shaped portion that forms in the existing light conductors such as Patent Document 2,3, and the shape of concave shaped portion can be rectangle or trapezoidal, and side and bottom surface are made of the plane.Thus, when the surface feeding sputtering of light conductor and the light propagated in light conductor are on colliding described side or bottom surface easily along same direction reflection.
The curve chart of Figure 13 for every kind of color (red, blue, green) being made comparisons by relation between main scanning direction position and the light output, its middle conductor (P1), (P2), (P3) are illustrated in versicolor light output in the existing light conductor that forms concave shaped portion on the position of main scanning direction 120mm, from this curve chart, can obviously find out, under the situation that forms rectangle or trapezoidal concave shaped portion, in main scanning direction near the 120mm position, light output is sharply risen, and it is even to produce uneven illumination in main scanning direction.
Summary of the invention
In order to address the above problem, be the bar-shaped light guide that the light from a surface feeding sputtering penetrates via the outgoing plane that alongst is provided with by reflection at inner surface in the related bar-shaped light guide of the 1st technical scheme, the end face with plane of incidence opposition side of this light conductor is to enter light in the light conductor all towards the right-angle prism shape of a described end face reflection with being parallel to length direction.
Here, right-angle prism is shaped as the shape that incident ray is reflected towards the light source circulation shown in the Patent Document 4 as described, particularly, can consider chevron shape, pyramid shape or cone shape.And the occasion that the present invention is suitable for need make the face of form right angle prism shape through minute surface fine finishining.
In addition, it in the related bar-shaped light guide of the 2nd technical scheme the bar-shaped light guide that the light from a surface feeding sputtering penetrates via the outgoing plane that alongst is provided with by reflection at inner surface, this light conductor with except with the face of the opposite side of the plane of incidence expose outgoing plane mode be accommodated in the shell, and the cover of the end face that covers described and plane of incidence opposition side is installed with the form with described shell split.
Specifically constituting of the 2nd technical scheme, the light conductor end that described cover has been installed is outstanding from shell, the light conductor integral body of described cover perhaps has been installed has taken in the enclosure.
In addition, in the related lighting unit of the application's the 3rd technical scheme, bar-shaped light guide is taken in the enclosure, make from the light of this bar-shaped light guide surface feeding sputtering and reflect through the bar-shaped light guide inner surface, penetrate via the length direction outgoing plane that from shell, exposes, make light scattering to the side except that the outgoing plane of described bar-shaped light guide, form the light scattering figure that makes light scattering, except forming the outgoing plane of described bar-shaped light guide, form concave shaped portion on the side outside the face of the plane of incidence and light scattering figure, the card claw stop that forms in this concave shaped portion engaging shell, in the face that forms this concave shaped portion, the face that the light that enters in the bar-shaped light guide is reflected is a curved surface.
According to described formation, because making light scatter, concave shaped portion reflects, so can not become obvious because of concave shaped portion only makes specific main scanning direction position.
Though also can print whitewash,, be favourable then to use of the present invention if constitute the light scattering figure by continuous or the discontinuous jog of part as described light scattering figure.Promptly, form at jog under the situation of light scattering figure, injection molding forming and the light conductor that is shaped, but the residual vestige of employed penetrator ram in the knockout course when injection molding forming, this vestige causes the reflection of certain orientation, if as concave shaped portion, it is the sort of unfavorable then can to eliminate with the vestige of penetrator ram.
Further, in the lighting unit that the present invention relates to, at an end of bar-shaped light guide light source is installed, the image read-out that relates among the present invention possesses described lighting device in addition, the linear imaging sensor formed by photo-electric conversion element, make from the irradiates light of described lighting device from the reverberation of original copy erecting equal-magnification imaging system towards described linear imaging sensor optically focused.
In the related bar-shaped light guide of the 1st technical scheme, the illumination that comes from the outgoing plane that is provided with along its length becomes even.Particularly, only in the existing light conductor of the luminescence unit of side configuration at one end, though owing to the reason of shrinking because of variations in temperature, the tendency that exists illumination to uprise unusually in end with the end opposition side that is provided with luminescence unit, but in the present invention, because the irradiates light that enters into the opposition side end is in that scattering but back one is distolateral again, so the light scattering figure on the bottom surface by being arranged on light conductor etc. makes irradiates light evenly scattering in the longitudinal direction.
In addition, in the related bar-shaped light guide of the 2nd technical scheme, even produce variations in temperature, because between the end face of bar-shaped light guide and shell, do not form the gap, so can prevent that also illumination becomes high on the end face with the luminescence unit opposition side.
In addition, in the 3rd technical scheme, can only be used to make the light quantity on the existing main scanning direction even energetically with causing at the uneven card of light quantity on the existing main scanning direction with concave shaped portion.
Description of drawings
Fig. 1 is an image read-out sectional view of having assembled bar-shaped light guide involved in the present invention.
Fig. 2 has assembled the 1st lighting unit overview of inventing related bar-shaped light guide.
Fig. 3 is the exploded perspective view of lighting unit among Fig. 2.
Fig. 4 is the end enlarged drawing that forms the right-angle prism shape in the bar-shaped light guide.
Fig. 5 (a)-(c) is the end view of bar-shaped light guide related among each embodiment.
Fig. 6 has assembled the 2nd end view of inventing the lighting unit of related bar-shaped light guide.
Fig. 7 is the schematic diagram of the 2nd another embodiment of invention.
Fig. 8 is the exploded view of lighting unit.
Fig. 9 is the enlarged drawing of light conductor.
Figure 10 is the amplification view of concave shaped portion.
Figure 11 (a)-(c) is the schematic diagram of other embodiment of concave shaped portion.
The concave shaped portion schematic diagram of Figure 12 for forming in the light conductor in the prior art.
Figure 13 is according to the relation between the output of main scanning direction position and light, the curve chart that the color of lighting unit in lighting unit involved in the present invention and the prior art is compared.
Embodiment
With reference to the accompanying drawings embodiments of the invention are described below.Fig. 1 is an image read-out sectional view of having assembled bar-shaped light guide involved in the present invention, configuration line-illuminating device 10 among the recess 1a that image read-out forms in framework 1, sensor base plate 3 with photo-electric conversion element (linear imaging sensor) 2 is installed in the bottom, on the middle body of framework 1, install further and be used for making the irradiates light that comes from lighting device 10 to stem from the equimultiple imaging lens arra 4 of the reverberation of original copy towards described photo-electric conversion element 2 optically focused, shine original copy from the illumination light that lighting device 10 penetrates by document board, its reverberation scioptics array 4 is detected by linear imaging sensor 2, reads original copy thus.And, though a lighting device 10 only is shown among the figure, also can be provided with in pairs.
Though described lens arra 4 can use rod-like lens array, but also can use lens arra, wherein the polylith lens board piles up the erecting equal-magnification lens of formation, and a plurality of micro lens can be arranged in regular two-dimensional shapes with prescribed distance in each lens board.
Fig. 2 is the overall diagram of lighting unit 10, Fig. 3 is the exploded perspective view of lighting unit 10, lighting unit 10 will be contained in the white shell 11 by the bar-shaped light guide 12 that transparent resins such as injection molding forming acrylate obtain, and at the one end luminescence unit 13 is installed simultaneously.This luminescence unit 13 can remain on trichromatic LED on the resin plate, and trichromatic each LED is positioned on the normal of bar-shaped light guide 12 bottom surfaces.
Bar-shaped light guide 12 exposes outgoing plane 12a from white shell 11, be provided with simultaneously make light scattering reflection to the opposed bottom surface of outgoing plane on figure 14.This figure 14 is by whitewash or trickle concavo-convex formation.
Further, end face 15 bar-shaped light guide 12 and the light incident side opposition side is the right-angle prism shape.Promptly as shown in Figure 4, the end face 15 chevron shape for forming through the accurately machined plane 15a of minute surface, 15b, the inclination angle of these planes 15a, 15b can be inclined to and make the length direction that is parallel to bar-shaped light guide 12 and enter the angle of incidence of light θ angle littler than critical angle in the bar-shaped light guide 12.For example plane 15a, 15b form 90o.
Fig. 5 (a) to (c) is the end surface shape schematic diagram of the light conductor end that relates among each embodiment, (a) end face 15 is quadrangular pyramid shape among the embodiment that illustrates, (b) end face 15 is for conical among the embodiment that illustrates, and end face 15 is a plurality of chevrons among the embodiment that (c) illustrates.So, the shape of end face 15 has multiple consideration, but end face 15 is preferably through minute surface fine finishining and makes the light whole distolateral shape of reflected back one more again that arrives end face 15.
Fig. 6 illustrates the end of the lighting unit of having assembled the related light conductor of the 2nd invention, in the 2nd invention, forms fastener 16 on bar-shaped light guide 12 and the end light incident side opposition side, and cover 17 is stuck in this fastener 16 and covers end face 15.Cover 17 is made of white resin, perhaps at inner surface reflector 18 is set, and this reflector 18 is close to through the accurately machined end face 15 of minute surface.
Further, between the end of the shell 11 of taking in bar-shaped light guide 12 and described cover 17, formed gap 19.Under the situation that the shrinkage ratio shell 11 of bar-shaped light guide 12 is big when cooling off after lighting unit 10 is exposed in the high temperature again, this gap 19 can prevent to cover 17 roof pressure shells 11 tough.
Fig. 7 illustrates another embodiment of the 2nd invention, covers 17 in this embodiment and also can be accommodated in the shell 11.In this case, even cooling causes that the length of bar-shaped light guide 12 shortens, because cover 17 is fixed on the end of bar-shaped light guide 12, so also can prevent to cause in the end of light scattering illumination and uprise this shortcoming unusually by the gap that produces between the end face of existing bar-shaped light guide and the inner surface of outer cover.
Fig. 8 to Figure 11 has illustrated the lighting unit that relates in the 3rd invention, and this lighting unit is assembled in have been assembled in above-mentioned image read-out shown in Figure 1.At this, Fig. 8 is the exploded view of lighting unit, Fig. 9 is the enlarged drawing of light conductor, Figure 10 is the amplification sectional view of concave shaped portion, lighting unit 103 will be contained in the white shell 110 by the bar-shaped light guide 120 that transparent resins such as injection molding forming acrylate obtain, and the light source 111 that keeps primitive colours LED at one end is installed simultaneously.
The surface of bar-shaped light guide 120 by the outgoing plane 120a that from shell 110, exposes, and the opposed bottom surface 120b of this outgoing plane 120a, left and right side 120c, 120d and two end face 120e, 120f between outgoing plane 120a and bottom surface 120b constitute.
The bottom surface 120b of bar-shaped light guide 120 goes up to form and makes the light scattering figure 121 that alongst evenly separates through reflection from the light of end face 120e or 120f incident.Because the formation of this light scattering figure 121 zone is near the island shape discontinuity zone of the sides light source 111, so that the luminous intensity of main scanning direction becomes even.
Each of described light scattering figure 121 forms the zone and is made of a plurality of continuous halfpipe concave surfaces 122.The axis of this halfpipe concave surface 122 is vertical with the length direction of light conductor (main scanning direction).Under the situation that has formed this halfpipe concave surface 122, reflect towards outgoing plane 120a equably from the light of end face 120e incident.
On the one hand, halfpipe concave surface 122 also can replace with the aggregate of trickle concave spherical surface.In this case, not only reflex on the top 120a that becomes outgoing plane, also reflex on left and right side 120c, the 120d by the light of surface feeding sputtering.
Form concave shaped portion 123 on the side 120c in described left and right side.Under bar-shaped light guide 120 is accommodated in situation in the shell 110, end the card claw stop 112 that in shell 110, forms by these concave shaped portion 123 cards, can prevent rocking or coming off of bar-shaped light guide 120.
The face that in the face that forms above-mentioned concave shaped portion 123 light that enters bar-shaped light guide 120 inside is reflected is curved surface 123a.So the surface of emission becomes curved surface 123a, even incide the light of curved surface 123a thus at a certain angle, if be the low-angle of a little, reflection direction also has very big variation.For this reason, the reverberation that sends from curved surface 123a is disperseed, and makes the light quantity on the main scanning direction become even.
Shape as concave shaped portion 123, except Fig. 9 and the end face 123b from light source 111 sides far away shown in Figure 10 are that vertical approximate half-circular and curved surface 123a are for to be drawn into fusoid shape towards light source 111, can consider that the end face 123b shown in Figure 11 (a) is that triangle and curved surface 123a are drawn into the fusoid shape with crest line, (b) the end face 123b shown in is quadrangle and curved surface 123a only draw the top simultaneously towards the thickness direction bending of bar-shaped light guide 120 a shape, (c) illustrate and do not have the shape that combines about end face 123b and curved surface 123a, and the head portion of curved surface 123a (the light source 111 side parts) shape of ending on the way.123 pairs of lighting units that light source 111 is set at shell 110 two ends of concave shaped portion shown in above-mentioned Figure 11 (c) are effective.
In addition illustrated example middle concave portion 123 be arranged on bar-shaped light guide main scanning direction approximate center part and away from the end of light source 111 1 sides near these two places, but near these two places, the end that also can be arranged on approximate center part and close light source 111 1 sides, approximate center part and these three places, two ends, only be arranged on these two places, both ends, further also can only be arranged on the approximate central part office.
Figure 13 is according to the relation between main scanning direction position and the light output, the curve chart that the color of the 3rd related lighting unit of invention and existing lighting unit is compared, can obviously see from this curve chart, light conductor involved in the present invention is compared with existing light conductor, and obviously the illumination on main scanning direction is very even.
In addition, the concave shaped portion 123 that card ends usefulness in the 3rd invention also goes for the light conductor in the 1st invention that end face is a right-angle prism, and perhaps cover covers the light conductor in the 2nd invention of the plane of incidence and opposition side end face.
Thus, further improved along the uniformity of the light quantity of outgoing plane main scanning direction.
The light conductor that relates among the present invention can be used as the image read-out of photocopier, facsimile machine etc. effectively.
Claims (8)
1, a kind of bar-shaped light guide, penetrate via the outgoing plane that alongst is provided with by reflection at inner surface from the light of a surface feeding sputtering, it is characterized in that the end face with plane of incidence opposition side of this light conductor is to enter light in the light conductor all towards the right-angle prism shape of a described end face reflection with being parallel to length direction.
2, the described bar-shaped light guide of claim 1 is characterized in that, described right-angle prism is shaped as through the accurately machined chevron shape of minute surface, pyramid shape or cone shape.
3, a kind of bar-shaped light guide, penetrate via the outgoing plane that alongst is provided with by reflection at inner surface from the light of a surface feeding sputtering, it is characterized in that, this light conductor with except with the end of plane of incidence opposition side expose outgoing plane mode be accommodated in the shell, and be equipped with form and cover cover described and plane of incidence opposition side end face with described shell split.
4, the described bar-shaped light guide of claim 3 is characterized in that, the light conductor end that described cover has been installed is outstanding from shell, the light conductor integral body of described cover perhaps has been installed has taken in the enclosure.
5, each described bar-shaped light guide among the claim 1-4 is characterized in that, at a distolateral light source that is equipped with of bar-shaped light guide.
6, a kind of lighting unit, bar-shaped light guide is taken in the enclosure, make from the reflection of the light process bar-shaped light guide inner surface of this bar-shaped light guide surface feeding sputtering, penetrate via the length direction outgoing plane that from shell, exposes, it is characterized in that, make light scattering to the side except that the outgoing plane of described bar-shaped light guide, form the light scattering figure, at outgoing plane except described bar-shaped light guide, form concave shaped portion on the side outside the face of the plane of incidence and formation light scattering figure, this concave shaped portion is fastened on the card claw stop that forms on the inner surface of outer cover, in the face that forms this concave shaped portion, the face that the light that enters in the bar-shaped light guide is reflected is a curved surface.
7, the described lighting unit of claim 6 is characterized in that, in bar-shaped light guide, described concave shaped portion is formed on the vestige place that injection molding forming goes out penetrator ram residual behind the bar-shaped light guide.
8, a kind of image read-out, makes the reverberation that stems from original copy in the irradiates light that the comes from described lighting unit erecting equal-magnification imaging system towards described linear imaging sensor optically focused at the linear imaging sensor that has each described lighting unit among the claim 5-7, is made of photo-electric conversion element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004268193A JP2006085975A (en) | 2004-09-15 | 2004-09-15 | Bar shape light guide, lighting unit, and image reading device |
| JP268193/04 | 2004-09-15 | ||
| JP139254/05 | 2005-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1750585A true CN1750585A (en) | 2006-03-22 |
Family
ID=36164292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510106768 Pending CN1750585A (en) | 2004-09-15 | 2005-09-15 | Bar-shaped light guide, illumination unit and image-scanning device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006085975A (en) |
| CN (1) | CN1750585A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956930A (en) * | 2009-07-15 | 2011-01-26 | 富士施乐株式会社 | Lighting device, image read-out and image processing system |
| CN102843487A (en) * | 2007-03-14 | 2012-12-26 | 株式会社Pfu | Scanning device, apparatus and method for image processing |
| CN103574407A (en) * | 2012-07-27 | 2014-02-12 | 丰田合成株式会社 | Linear lighting device |
| CN105450895A (en) * | 2014-09-24 | 2016-03-30 | 佳能株式会社 | Light guiding unit, and light illuminating device and image reading apparatus using the same |
| CN105977080A (en) * | 2015-03-10 | 2016-09-28 | 欧姆龙株式会社 | Button switch |
| CN110630972A (en) * | 2018-06-25 | 2019-12-31 | 株式会社小糸制作所 | Vehicle lamp |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007183470A (en) * | 2006-01-10 | 2007-07-19 | Rohm Co Ltd | Light guide member |
| JP5609466B2 (en) * | 2010-09-15 | 2014-10-22 | オムロン株式会社 | Surface light source device and frame used for surface light source device |
| KR101939079B1 (en) * | 2011-12-16 | 2019-01-17 | 엘지디스플레이 주식회사 | Backlight unit and liquid crystal display device having the same |
| US9151465B2 (en) | 2012-02-07 | 2015-10-06 | Mitsubishi Electric Corporation | Light-source device and reflector-support structure |
| WO2013118388A1 (en) | 2012-02-07 | 2013-08-15 | 三菱電機株式会社 | Light-source device |
| JP5820845B2 (en) | 2012-09-07 | 2015-11-24 | キヤノン・コンポーネンツ株式会社 | Illumination device, image sensor unit, and paper sheet identification device |
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2004
- 2004-09-15 JP JP2004268193A patent/JP2006085975A/en not_active Withdrawn
-
2005
- 2005-09-15 CN CN 200510106768 patent/CN1750585A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843487A (en) * | 2007-03-14 | 2012-12-26 | 株式会社Pfu | Scanning device, apparatus and method for image processing |
| US8941890B2 (en) | 2007-03-14 | 2015-01-27 | Pfu Limited | Scanning device, apparatus and method for image processing |
| US8947748B2 (en) | 2007-03-14 | 2015-02-03 | Pfu Limited | Scanning device, apparatus and method for image processing |
| CN102843487B (en) * | 2007-03-14 | 2015-09-09 | 株式会社Pfu | Scanning device, image processing apparatus and image processing method |
| CN101956930A (en) * | 2009-07-15 | 2011-01-26 | 富士施乐株式会社 | Lighting device, image read-out and image processing system |
| CN101956930B (en) * | 2009-07-15 | 2014-12-31 | 富士施乐株式会社 | Illuminating device, image reading device, and image forming apparatus |
| CN103574407A (en) * | 2012-07-27 | 2014-02-12 | 丰田合成株式会社 | Linear lighting device |
| CN105450895A (en) * | 2014-09-24 | 2016-03-30 | 佳能株式会社 | Light guiding unit, and light illuminating device and image reading apparatus using the same |
| CN105450895B (en) * | 2014-09-24 | 2018-09-28 | 佳能株式会社 | Light element, lighting device and image-reading device using the light element |
| CN105977080A (en) * | 2015-03-10 | 2016-09-28 | 欧姆龙株式会社 | Button switch |
| CN110630972A (en) * | 2018-06-25 | 2019-12-31 | 株式会社小糸制作所 | Vehicle lamp |
| CN110630972B (en) * | 2018-06-25 | 2022-05-03 | 株式会社小糸制作所 | Vehicle lamp |
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| Publication number | Publication date |
|---|---|
| JP2006085975A (en) | 2006-03-30 |
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