CN1831423A - Linear lighting device and image access device using thereof - Google Patents
Linear lighting device and image access device using thereof Download PDFInfo
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- CN1831423A CN1831423A CN 200610056847 CN200610056847A CN1831423A CN 1831423 A CN1831423 A CN 1831423A CN 200610056847 CN200610056847 CN 200610056847 CN 200610056847 A CN200610056847 A CN 200610056847A CN 1831423 A CN1831423 A CN 1831423A
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Abstract
The present invention provides one kind of linear lighting device and the image reader therewith. The linear lighting device includes one strip optical conductor of transparent parts, LED's configured to the light incoming side of the optical conductor, one optical conducting part to guide the incoming light lengthwise and one light outgoing part for the guided light to irradiate in the whole lengthwise direction. Inside the linear lighting device, wedged lugs and lugs with flat front end are formed oppositely for controlling the light from the light conducting part to the light outgoing part, and this can inhibit the lowering of the outgoing light flux and reduce the inhomogeneity of brightness in lengthwise direction of the optical conductor.
Description
Technical field
The present invention relates to the line-illuminating device that uses in image read-outs such as image reading apparatus, facsimile machine or duplicator, particularly the reading face at the irradiation original copy reads line-illuminating device that uses in its catoptrical image sensor cell and the image read-out that has used this line-illuminating device.
Background technology
In the past, the type of the imageing sensor that uses in image read-outs such as image reading apparatus, facsimile machine or duplicator comprised kinds such as dwindling formula, contact.Wherein, contact-type image sensor (being designated hereinafter simply as CIS) is made of lighting device, equimultiple imaging Optical devices, line-array sensor etc.And in general, therefore such CIS, has the advantages that to be easy to make the device miniaturization with this imageing sensor with to have utilized the imageing sensor that dwindles optical system to compare optical path length shorter.Like this, because easily with in the CIS load facility, dwindle optical system with replacement so be used for thin flat formula image read-out etc. more.The line-illuminating device that uses in such CIS requires with the illumination more than or equal to necessary illumination the original copy face to be thrown light on, and makes the reverberation from original copy have sufficient intensity ground arrival line-array sensor.
Fig. 4 is the cutaway view of contact-type image sensor in the past, has represented that light conductor 42 is 1 a situation.This contact-type image sensor has the light source that is used to shine original copy, and scioptics 44 receive reverberation from original copy 49 by light accepting part, and convert thereof into the signal of telecommunication, and wherein, described light accepting part is formed by photo-electric conversion element (CCD).
In Fig. 4, the 43rd, the framework of supporting structure part, the 44th, make the lens arra of optical image imaging on line-array sensor 45 of original copy 49.The 45th, have line-array sensor light accepting part, that be configured to wire that a plurality of optical image opto-electronic conversion with original copy 49 become the signal of telecommunication.The 46th, the sensor base plate of line-array sensor 45 is installed.41r, 41g, 41b have the light source that is used for LED that original copy 49 is thrown light on, are configured in an end face of the light conductor 42 that extends along its length.Light source cell 41 has and is designed to be taken into from the emergent light of LED41r, 41g, 41b and makes illumination light quantity light conductor 42 uniformly roughly on the length of 1 row of whole line-array sensor 45.The 47th, the connector of connection sensor signal and external equipment, the 48th, the original copy brace table that the clear glass of support original copy 49 is made.
Light from the LED of the end face that is configured in light conductor 42 penetrates is imported into the light conductor 42 that acrylic resin (acryl) is made, and portion's intricately reflection within it from exit facet (light out part) directive outside, is thrown light on to original copy 49.From being beneficial to the purpose of the reflection in this light conductor, preferably with reflecting part and terminal part (opposition side of incidence surface) pre-configured titanium dioxide powder or the aluminium powder of means such as printing at light conductor 42.
As these line-illuminating devices, use the end (light in part) of the bar-shaped transparent body of making at acrylic resin (light conductor) to be provided with the line-illuminating device of light-emitting component.(details is with reference to Japan's No. the 2693098th, communique of patent registration, Japanese kokai publication hei 8-163320 communique and Japanese kokai publication hei 10-241432 communique).
The line-illuminating device of being put down in writing in these communiques, is sought to reduce cost at the LED of an end of the bar-shaped transparent body (light conductor) configuration as light-emitting component by only.And then, improved the shape of light conductor, make to have uniform illumination along the length direction of this light conductor, obtain having the uniform illumination of trying one's best to terminal part from the incidence surface that is launched into from the light conductor of the light of LED.
Summary of the invention
But, in above-mentioned example in the past, have following problem.
At first, Fig. 5 A, Fig. 5 B represent an example of the section shape of the line-illuminating device in the past that Japanese kokai publication hei 10-241432 communique is put down in writing, and this problem point is described.
Arrow among the figure is represented the direction of light.In Fig. 5 A, between the light out part 502 that light guide section 501 that light and drawing from incidence surface generally perpendicularly enter and this light penetrate, be provided with wedge-shaped projection with label 500 expressions.Because this structure, there is the more light 510 that turns back to light guide section 501 from light out part 502.In addition, enter the light 511 of light out part 502 also to the direction ejaculation different from light guide section 501 with predetermined direction.Thus, these light do not become effective illumination light.As a result, produced the illumination light quantity not sufficient, can't improve the irradiation light quantity problem.
In addition, among Fig. 5 B shown in label 500,503, be provided with 2 wedge-shaped projection.Equally, in these shapes, enter light out part 502, penetrate light to the direction that is helpless to original copy is thrown light on from the reverberation 512 of the bottom surface 521 of light guide section 501 sides.And in contrast, produce such problem: as from the reverberation of the bottom surface 522 of light out part 502 sides, light has turned back to light guide section 501 from light out part 502, and this light can not outgoing, and the illumination light quantitative change of original copy is low.The objective of the invention is to solve such problem points in the past.
The invention is characterized in, a kind of line-illuminating device is provided, can be in the contact-type image sensor unit, increase the illumination of the illumination light that penetrates from the lighting device of wire, and make along the Illumination Distribution of the length direction of light conductor more even.
Feature of the present invention also is, a kind of line-illuminating device is provided, and can improve the lifting characteristic of the illumination of illumination light, make light conductor effectively to read length longer.
The invention provides a kind of line-illuminating device, it is characterized in that, comprising: light source; The light conductor that constitutes by transparent medium, have make from the light of above-mentioned light source from incidence surface incident, and along its length this light is carried out the light guide section of leaded light and has being used to make the light of deriving to be the light out part of the outgoing plane that wire penetrates at whole above-mentioned length direction by above-mentioned light guide section; And the 1st projection and the 2nd projection, in order to control the light quantity that enters above-mentioned light out part from above-mentioned light guide section, between above-mentioned light guide section and above-mentioned light out part, be configured on the relative position along the length direction of above-mentioned light conductor; Wherein, above-mentioned the 1st projection be wedge shape and the height along with the distance with above-mentioned incidence surface changes, the 1st angle that the above-mentioned light guide section side wall surface of above-mentioned the 2nd projection is become with above-mentioned light guide section side bottom surface, the 2nd angle that is become with above-mentioned light out part side bottom surface greater than the above-mentioned light out part wall of above-mentioned the 2nd projection.
In addition, above-mentioned light conductor, the 1st zone that also have from above-mentioned incidence surface along above-mentioned length direction, the height of above-mentioned the 2nd projection increases continuously; And be positioned at after above-mentioned the 1st zone, the 2nd zone of the height constant of above-mentioned the 2nd projection.
In addition, above-mentioned light conductor, the 1st zone that also have from above-mentioned incidence surface along above-mentioned length direction, the height of above-mentioned the 2nd projection increases continuously; Be positioned at after above-mentioned the 1st zone, the 2nd zone of the height constant of above-mentioned the 2nd projection; And be positioned at after above-mentioned the 2nd zone, along above-mentioned length direction to the 3rd zone that the height of above-mentioned the 2nd projection of terminal part reduces continuously.
According to the present invention, not only the illumination of line-illuminating device increases, and Illumination Distribution is more even.In addition, its advantage is, because the Illumination Distribution of the illumination light of outgoing is even near the light in part of light conductor, therefore, and effectively the reading length and can obtain longlyer of light conductor, reduce in unwanted space, can carry out miniaturization aspect the product installation.In addition,, can not exert an influence yet, therefore, can carry out the height and position adjusting process in the LED mounting process more easily Illumination Distribution even LED is offset with respect to the allocation position of light conductor.
Description of drawings
Figure 1A is the cutaway view of the line-illuminating device of embodiments of the invention 1.
Figure 1B is the oblique view of the line-illuminating device of embodiments of the invention 1.
Fig. 2 is the figure of the optical effect of expression when having used the line-illuminating device of embodiment 1.
Fig. 3 is the figure of Illumination Distribution of length direction of the line-illuminating device of expression embodiments of the invention 1.
Fig. 4 is the structure cutaway view of contact-type image sensor in the past.
Fig. 5 A, Fig. 5 B are the figure that expression has the light path of the profile of conventional illuminating device of wedge portion and undesirable light.
Fig. 6 is the oblique view of structure of the lighting device of expression embodiments of the invention 2.
Fig. 7 is the oblique view of structure of the lighting device of expression embodiments of the invention 3.
Fig. 8 is the figure of an example of flat (flatbed) image read-out of the expression lighting device that used embodiments of the invention.
Fig. 9 is near the figure of the lifting characteristic of the illumination the incidence surface of lighting device of expression embodiments of the invention 1, embodiment 2.
Figure 10 be illustrated in the lighting device of embodiments of the invention 1, the figure of the asynchronous Illumination Distribution in installation site of LED.
Figure 11 be illustrated in the lighting device of embodiments of the invention 2, the figure of the asynchronous Illumination Distribution in installation site of LED.
The specific embodiment
Below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.Determined the present invention does not cause restriction to following embodiment to claims.In addition, all feature combinations settling mode not necessarily of the present invention of explanation in the present embodiment is necessary.
The light conductor of the line-illuminating device of present embodiment, the light conductor shape with shown in Figure 4 is identical basically, it is characterized in that, has the projection structure of rectangle between light guide section and light out part, to replace original wedge-shaped projection.So in the present embodiment, has following feature: on the basis of in the past line-illuminating device, near near added control outgoing light quantity the light guide section and/or the light out part neotectonics.
＜embodiment 1 〉
Figure 1A, Figure 1B represent the example of the line-illuminating device of embodiments of the invention 1.Figure 1A represents the cutaway view of substantial middle portion of length direction of light conductor 100 of the line-illuminating device of embodiment 1.This light conductor 100 can generally be divided into light guide section 101 and the light out part 102 that extends along its length direction.Near the end face of at least one side of this light conductor 100 (below be called incidence surface 110 (Figure 1B)), configuration is as the LED 120 of light source.Light guide section 101 has the light that acceptance is penetrated near the LED the outside that is configured in incidence surface 110 120, its length direction along light conductor 100 is conducted, and launch the function of these light to light out part 102.Light out part 102 is accepted light from light guide section 101, from the light-emitting face of the part that is set at light out part 102, penetrates light along predetermined direction.Thus, the reading object of original copy part is by the illumination of wire ground.
Figure 1B is the brief strabismus map of the integral body of this light conductor 100 of expression.
This light conductor 100 is formed by transparent medium, advances by the identical shaped projection 103 that is formed with from the incidence surface 110s to terminal part, and wedge portion 104 forms low near the both ends, the highest near central authorities.
Fig. 2 is the cutaway view of light conductor 100 that is used to illustrate the effect of projection 103.
In Fig. 2, to compare with the example in the past shown in Fig. 5 A, Fig. 5 B, exiting surface one side of projection 103 has the wall with longitudinal direction angle.Thus, have following effect: block the light 201 that directly enters with low angle to light out part 102 from light guide section 101, and, block the light 202 that turns back to light guide section 101 from light out part 102.Like this, in case the light that causes entering into light out part 102 because of the 1st bottom surface 210 that belongs to light guide section 101 and the 2nd bottom surface 211 that belongs to light out part 102 returns the situation of light guide section 101 again and tails off, in addition, the light that enters light out part 102 from light guide section 101 is also effectively utilized, therefore, compare with example in the past, the illumination on the original copy is increased.
Fig. 3 is the figure of Illumination Distribution of length direction of the lighting device of explanation present embodiment.
In Fig. 3, be configured in the incidence surface side, be the left side of Fig. 3 that the longitudinal axis is represented Mingguang City's amount that contrasts along the lighting position length direction of light conductor 100, original copy as the LED of light source.In addition, transverse axis is represented the length (unit is mm) from incidence surface 110.
In Fig. 3, the line shown in the label 300 is represented the illumination characteristic of the lighting device of present embodiment, and the line shown in the label 301 is illustrated in the illumination characteristic of representing with section among Fig. 5 B of the lighting device of example in the past.In conventional illuminating device, rising, present maximal illumination afterwards from the position of incidence surface 110 about 15mm illumination, slowly decay to the terminal part illumination of advancing.Can think that this is because near incidence surface 110, the part of the light that penetrates from light source (LED) directly enters light out part 102, the cause that near the light quantity the incidence surface is increased.
And in the lighting device of embodiments of the invention 1 as can be known, this tendency reduces, and obtains on the length direction of whole light conductor 100 roughly illumination uniformly.
＜embodiment 2 〉
At this, more carefully observe the lighting device of embodiment 1 illumination characteristic, be Fig. 3, near incidence surface 110 about 15mm, have the low zone of illumination as can be known, in addition, near the about 10mm of self terminal portion, similarly have the zone that illumination more descends.Can think that this is owing to the substantial middle portion that enters into light conductor 100 from the direct sunshine of light source 120, thus near light generation scattering incidence surface 110, the cause that the light of arrival light out part 102 tails off.
On the other hand, in conventional illuminating device, in the scope of distance incidence surface 20～50mm, obtain the maximum of illumination.Consider that this is owing to added the light that directly arrives light out part 502 from light source.And near the end of the incidence surface of lighting device the illumination step-down, therefore, near the end of this incidence surface, can't read original copy.Thus, this part becomes the nonuseable part of lighting device.In addition similarly, at the terminal part of the opposition side of incidence surface, the part that illumination reduces in the scope of self terminal portion number millimeter is arranged also.So, seek to make the length of the part that these illumination reduce shorter, thereby reduce nonuseable part.
Such illumination characteristic is pressed shades of colour and slightly different.Current most CIS uses the LED of 3 kinds of colors of RGB.These LED as shown in Figure 4, along continuous straight runs disposes side by side near the incidence surface of light conductor.Thus,, LED far away apart from light out part is arranged, the poor more tendency of lifting characteristic of illumination according to its allocation position.As a result, the uniformity of being not only near the illumination of light in part descends, and the colorimetric properties of light out part also descend.
In addition, the part that such illumination descends can not be used to reading of original copy, and therefore, the both ends of CIS become and can not use, and become waste.So, seek to solve such problem: the lighting device size is reduced, and to make whole zone be the effective coverage.
Therefore in embodiment 2, near the illumination of improving the light in part descends, the height of projection 103 is reduced, be blocked in the past, be taken into light out part 102 from the part of the direct sunshine of light source 120, use as illumination light.Like this, just has the feature that makes near the low area decreases of the illumination of incidence surface.
Fig. 6 is the brief strabismus map of the light conductor 100a of embodiments of the invention 2.
This light conductor 100a is processed into shape shown in Figure 6 with acrylic materials and makes.The feature of this light conductor 100a is identical with the foregoing description 1, all is elongated shape, wherein has the light guide section 101 of deriving along its length from the light of light source 120, and wire ground penetrates the light out part 102 of the illumination light of irradiation original copy.In the position of dividing this light guide section 101 and light out part 102, the same with embodiment 1, be formed with wedge portion 104 shown in Figure 6 and projection 103.
Being shaped as of this projection 103 has the 1st raised areas 601 and the 2nd raised areas 602 along the length direction of this light conductor 100a.Wherein, the 1st raised areas 601 is that it uprises highly gradually near 0 to about 5.5mm from the distance of incidence surface 110; Above-mentioned the 2nd raised areas 602 is connected on after above-mentioned the 1st raised areas 601, lasts till terminal part with certain height always.This is characterised in that, distance incidence surface 110 the distance about 5.5mm near before the zone, make the height of projection 103 and the height of wedge portion 104, (highly=0) state advances to the terminal part direction and uprises gradually from roughly there not being height, when when the 1st raised areas 601 enters into the 2nd raised areas 602, the height of projection 103 keeps constant by the height of for example the foregoing description 1.Thus, comprise that more light arrives light out part 102 from light guide section 101 from the direct sunshine of light source 120 with from the light of the bottom surface of light guide section 100a.Like this, just, remedied near the reduction of the illumination the incidence surface 110.
Near incidence surface 110, there is the light that directly enters light out part 102 from LED120, wait by the formation projection in the past and block, not use this direct sunshine as far as possible.Embodiment 2 by utilizing this direct sunshine from light source 120, successfully makes near incidence surface 110 illumination improve then in contrast.
In contrast,, by improving the height of projection 103, and make the height change of wedge portion 104, regulate light quantity according to this distance in the distance of distance incidence surface 110 part far away.Thus, can regulate the light quantity that arrives light out part 102, make the illumination of length direction of light conductor 100a even.
With reference to the light conductor 100a of Fig. 9 explanation by present embodiment 2, the result after near the illumination the incidence surface 110 improves.
Fig. 9 is near the figure of the lifting characteristic of the illumination the incidence surface of lighting device of expression embodiments of the invention 1, embodiment 2.In Fig. 9, the result of label 900 expression embodiment 1, the result of label 901 expression embodiment 2.
In Fig. 9, represent near the incidence surface illumination with relative value.In embodiment 2, compare as can be known with embodiment 1, from incidence surface the distance about 4mm near, the lifting of illumination is better.Thus, the effective length that can effectively shine the light conductor of original copy has increased, and as the light conductor corresponding to the original copy of certain width, can relatively shorten the length of this part amount.
In addition, rely on the shape of the light conductor 100a of embodiment 2, also have new effect as described below.
Figure 10 is illustrated in the lighting device of embodiments of the invention 1, the figure of the asynchronous Illumination Distribution in installation site of LED.
In the light conductor shown in the embodiment 1 100, when skew takes place in the allocation position of the LED 120 that is configured in its incidence surface 110 sides on longitudinal direction, Illumination Distribution characteristic difference on the length direction of whole light conductor 100.Particularly in the zone near incidence surface 110, the slightly different illumination change in the installation site of LED120 will be very big.Therefore, in the lighting device of embodiment 1, on manufacturing process, must carefully adjust the setting height(from bottom) position of LED120, on manufacturing process, become very numerous and diverse.
Figure 11 is illustrated in the lighting device of embodiments of the invention 2, the figure of the asynchronous Illumination Distribution in installation site of LED.
In Figure 11, expression makes the Illumination Distribution characteristic of the asynchronous length direction in installation site of LED.Hence one can see that, even the installation site difference of LED, what variation is the Illumination Distribution characteristic do not have yet.Thus, the contraposition of LED becomes simply on manufacturing process, except the difference of the Illumination Distribution that can reduce product, can also shorten the time of manufacturing process.
＜embodiment 3 〉
In present embodiment 3, adopt the structure that makes near incidence surface 110 height and near the projection 103 that terminal part is be phasic Chang.Details as shown in Figure 7.
Fig. 7 is the brief strabismus map of light conductor 100b of the lighting device of expression embodiments of the invention 3.
In present embodiment 3, it is characterized in that, length direction along light conductor 100b, as shown in Figure 7, the shape of projection 103 improves the 1st raised areas 701 of rising height gradually and has formed the 2nd ditch zone 702 of projection 103 of certain altitude except being provided with from incidence surface 110, plays the 3rd ditch zone 703 that projection 103 is reduced near also being provided with the about 6mm of self terminal portion.In addition, the shape of wedge portion 104 is identical with embodiment 2 with the foregoing description 1.
In addition, dispose the reflection part that constitutes by aluminium etc., improve reflection of light efficient from light source 120 at the terminal part of light conductor 100b.Like this, become and be similar to the structure that has disposed light source at terminal part, near the tendency that illumination descends terminal part reduces.Thus, can reduce near the position that illumination descends terminal part.As a result, give relative elongatedly, can shorten that illumination reduces and the zone that can't use with the effective length of the light conductor of effective illumination.Thus, the length of the lighting device that the original copy to certain-length throws light on can be shortened, therefore, the width of image read-out can be correspondingly shortened.
In addition, in the foregoing description 1 and embodiment 2, the also reflection part that can constitute by aluminium etc. in the configuration of the terminal part of light conductor 100b.
＜embodiment 4 〉
The following describes the flat image reading apparatus of the lighting device that has used present embodiment.
Fig. 8 is the brief strabismus map as the image read-out of an application examples of the imageing sensor of embodiments of the invention.Used the example of the flat image read-out of contact-type image sensor in this expression.
In Fig. 8, label 81 is the CIS that possess the lighting device of present embodiment.Label 82 is the glass plates as the original copy supporter, and label 83 is the cables (wire) that make the CIS operation, and label 84 is the drive motors that are used for mobile cable 83, make CIS scanning, and label 85 is pressing plates of original copy.
Make the motion of cable 83 mechanicalnesses by drive motors 84 is driven, can read the image information of original copy at the mobile CIS81 of read direction (scanning direction).CIS constitutes as the sensor unit that lighting unit has been installed integratedly, from the reverberation of illuminated original copy,, exports as view data by each row by photo-electric conversion element optically focused by the lens arra among the CIS (not shown).Like this, can read the also image information of output chip (sheet) shape.
In the image reading apparatus of the CIS unit that present embodiment has been installed, can shorten the length of lighting device more, therefore, can shorten the width of image reading apparatus, and then help the size of downscaled images reading device.
As described above,, not only can improve the illumination of line-illuminating device, can also make Illumination Distribution more even according to the present invention.
In addition, because near the Illumination Distribution of the illumination light that penetrates the light in part of light conductor becomes evenly, therefore, effectively the reading length and can obtain longer of light conductor.Thus, have the unwanted space of minimizing, can be in the advantage of miniaturization aspect the product installation.
In addition,, also can reduce influence, therefore, can make the installation site adjustment in the LED mounting process become easier Illumination Distribution even LED is offset with respect to the allocation position of light conductor.
The invention is not restricted to the foregoing description, in the scope of the purport that does not break away from the present patent application, can carry out various changes and modification.Thus, the technical scope of the present patent application will be limited by following claims.
Claims (9)
1. a line-illuminating device is characterized in that, comprising:
Light source;
The light conductor that constitutes by transparent medium, have make from the light of above-mentioned light source from incidence surface incident, and along its length this light is carried out the light guide section of leaded light and has being used to make the light of deriving to be the light out part of the outgoing plane that wire penetrates at whole above-mentioned length direction by above-mentioned light guide section; And
The 1st projection and the 2nd projection in order to control the light quantity that enters above-mentioned light out part from above-mentioned light guide section, between above-mentioned light guide section and above-mentioned light out part, are configured on the relative position along the length direction of above-mentioned light conductor,
Wherein, above-mentioned the 1st projection be wedge shape and the height along with the distance from above-mentioned incidence surface changes, the 1st angle that the above-mentioned light guide section side wall surface of above-mentioned the 2nd projection is become with above-mentioned light guide section side bottom surface, the 2nd angle that is become with above-mentioned light out part side bottom surface greater than the above-mentioned light out part wall of above-mentioned the 2nd projection.
2. line-illuminating device according to claim 1 is characterized in that:
Above-mentioned light conductor also has the 1st zone and follows the 2nd zone in the 1st zone, and wherein, described the 1st zone is that the height of above-mentioned the 2nd projection begins to increase continuously along above-mentioned length direction from above-mentioned incidence surface; Described the 2nd zone is the height constant of above-mentioned the 2nd projection.
3. line-illuminating device according to claim 1 is characterized in that:
Above-mentioned light conductor and then have the 1st zone, then the 2nd zone and then the 3rd zone in the 2nd zone in the 1st zone, wherein, described the 1st zone begins to increase continuously along the height of above-mentioned the 2nd projection of above-mentioned length direction from above-mentioned incidence surface; Described the 2nd zone, the height constant of above-mentioned the 2nd projection; Described the 3rd zone, the height of above-mentioned the 2nd projection reduces continuously along above-mentioned length direction towards terminal part.
4. line-illuminating device according to claim 3 is characterized in that:
Above-mentioned light conductor has any one zone at least in above-mentioned the 1st zone, above-mentioned the 2nd zone, above-mentioned the 3rd zone.
5. line-illuminating device according to claim 1 is characterized in that:
The section shape of above-mentioned the 2nd projection is a wedge shape, and the height of the 2nd projection changes continuously along the length direction of above-mentioned light conductor.
6. line-illuminating device according to claim 1 is characterized in that:
Above-mentioned light conductor at the terminal part of the opposition side of above-mentioned incidence surface, also disposes and is used for catoptrical reflection part.
7. line-illuminating device according to claim 1 is characterized in that:
Above-mentioned light source is LED, and this light source contacts with above-mentioned incidence surface or the near-earth that joins is disposing.
8. line-illuminating device according to claim 1 is characterized in that:
Above-mentioned the 1st angle is the obtuse angle, and above-mentioned the 2nd angle is an acute angle.
9. an image read-out is characterized in that, comprising:
The described line-illuminating device of claim 1;
Reverberation from original copy is carried out the wire imaging device of imaging; And
Have a plurality of line-array sensors that above-mentioned reverberation converted to the pixel of the signal of telecommunication.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP067140/2005 | 2005-03-10 | ||
| JP2005067140 | 2005-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1831423A true CN1831423A (en) | 2006-09-13 |
| CN1831423B CN1831423B (en) | 2010-05-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100568477A Expired - Fee Related CN1831423B (en) | 2005-03-10 | 2006-03-09 | Linear lighting device and image access device using thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1831423B (en) |
| TW (1) | TW200642439A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958997A (en) * | 2009-07-17 | 2011-01-26 | 富士施乐株式会社 | Image read-out and linear light unit |
| CN101994959A (en) * | 2009-08-11 | 2011-03-30 | 佳能组件股份有限公司 | White light emitting apparatus in image reading device and linear illuminator using same |
| CN102034295A (en) * | 2009-08-07 | 2011-04-27 | 威海华菱光电有限公司 | Contact type image sensor |
| CN102998735A (en) * | 2011-09-16 | 2013-03-27 | 佳能株式会社 | Light guide, illumination device and image reading apparatus |
| EP2814232A1 (en) * | 2013-06-11 | 2014-12-17 | Canon Kabushiki Kaisha | Image reading device and image forming apparatus including the same |
| CN104854397A (en) * | 2012-12-18 | 2015-08-19 | 皇家飞利浦有限公司 | Lighting strip, lighting system, panel support element and modular panel system |
| CN107800918A (en) * | 2016-08-30 | 2018-03-13 | 佳能精技立志凯株式会社 | Lighting device and image read-out |
| CN108802890A (en) * | 2018-04-18 | 2018-11-13 | 四川斐讯信息技术有限公司 | A kind of light guide structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI425396B (en) * | 2009-11-25 | 2014-02-01 | Coretronic Corp | Optical touch apparatus and optical touch display apparatus |
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| JPH1098581A (en) * | 1996-08-02 | 1998-04-14 | Canon Inc | Image reader and image read system |
| JP2000021221A (en) * | 1998-07-06 | 2000-01-21 | Brother Ind Ltd | Linear lighting system |
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- 2006-02-13 TW TW095104758A patent/TW200642439A/en not_active IP Right Cessation
- 2006-03-09 CN CN2006100568477A patent/CN1831423B/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958997A (en) * | 2009-07-17 | 2011-01-26 | 富士施乐株式会社 | Image read-out and linear light unit |
| CN101958997B (en) * | 2009-07-17 | 2015-02-18 | 富士施乐株式会社 | Image reading apparatus and linear light source unit |
| CN102034295A (en) * | 2009-08-07 | 2011-04-27 | 威海华菱光电有限公司 | Contact type image sensor |
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| CN104854397A (en) * | 2012-12-18 | 2015-08-19 | 皇家飞利浦有限公司 | Lighting strip, lighting system, panel support element and modular panel system |
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| CN107800918B (en) * | 2016-08-30 | 2021-07-30 | 佳能精技立志凯株式会社 | Illumination device and image reading device |
| CN108802890A (en) * | 2018-04-18 | 2018-11-13 | 四川斐讯信息技术有限公司 | A kind of light guide structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1831423B (en) | 2010-05-12 |
| TWI311881B (en) | 2009-07-01 |
| TW200642439A (en) | 2006-12-01 |
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