JP2008147772A - Image sensor - Google Patents

Image sensor Download PDF

Info

Publication number
JP2008147772A
JP2008147772A JP2006329754A JP2006329754A JP2008147772A JP 2008147772 A JP2008147772 A JP 2008147772A JP 2006329754 A JP2006329754 A JP 2006329754A JP 2006329754 A JP2006329754 A JP 2006329754A JP 2008147772 A JP2008147772 A JP 2008147772A
Authority
JP
Japan
Prior art keywords
light guide
frame
light
image sensor
scanning direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2006329754A
Other languages
Japanese (ja)
Other versions
JP4417368B2 (en
Inventor
Hiroshi Hasegawa
洋 長谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2006329754A priority Critical patent/JP4417368B2/en
Publication of JP2008147772A publication Critical patent/JP2008147772A/en
Application granted granted Critical
Publication of JP4417368B2 publication Critical patent/JP4417368B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image sensor capable of forming a long-length light guide by connecting a plurality of divided light guides. <P>SOLUTION: The image sensors are each for having the light guide 2 propagate/emit light made incident from a light source 1 to an original 3 and are installed on both sides of a lens array 4, and a 2nd frame 10 and a 3rd frame 11 hold the light guide 2. The light guide 2 is divided in a main scanning direction, and the divided light guides 2 are held by the 2nd frame 10 and the 3rd frame 11. Thus, the plurality of divided light guides 2 can be connected and the long-length light guide is formed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、複写機、ファクシミリなどのカラー画像を読み取る画像入力装置に用いられ、特に紙幣等の特殊印刷を施したカラー画像の読み取りにも適したイメージセンサに関するものである。   The present invention relates to an image sensor that is used in an image input device that reads a color image such as a copying machine or a facsimile, and that is particularly suitable for reading a color image that has been subjected to special printing such as banknotes.

従来のイメージセンサは、例えば特許文献１のように、第１の基板にレンズアレイを介して被照射体からの反射光を受光するセンサを設け、前記第１の基板に対して前記レンズアレイと反対側に配置した第２の基板に被照射体を照射する光源を設け、光源から被照射体までの距離を従来よりも長くすることで、被照射体の読み取りライン上における照射分布を均一化したものである。このイメージセンサは、光源から照射された光を被照射体に照射する為、導光体を用い、導光体に入射された光は、導光体を通過し、被照射体に照射される。   A conventional image sensor is provided with a sensor that receives reflected light from an irradiated object via a lens array on a first substrate, as in Patent Document 1, for example, and the lens array is connected to the first substrate. A light source that irradiates the object to be irradiated is provided on the second substrate disposed on the opposite side, and the distance from the light source to the object to be irradiated is made longer than before, thereby making the irradiation distribution on the reading line of the object to be irradiated uniform It is a thing. This image sensor uses a light guide to irradiate the irradiated body with light emitted from the light source, and the light incident on the light guide passes through the light guide and is irradiated to the irradiated body. .

特開２００６−２３７９７７号公報（段落００１４〜段落００２０，第３図）Japanese Patent Laying-Open No. 2006-237777 (paragraphs 0014 to 0020, FIG. 3)

従来のイメージセンサは以上のように構成され、長尺の導光体内を光が通過する為、導光体における透過率のバラツキや導光体を通過する光信号の歪が生じてしまい、長尺な導光体を形成することは難しいという課題があった。   A conventional image sensor is configured as described above, and light passes through a long light guide, resulting in variations in transmittance in the light guide and distortion of an optical signal passing through the light guide. There was a problem that it was difficult to form a long light guide.

この発明は上記のような課題を解決するためになされたもので、分割した導光体を複数個接続することで長尺な導光体を形成することができるイメージセンサを得ることを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an image sensor capable of forming a long light guide by connecting a plurality of divided light guides. To do.

この発明に係るイメージセンサは、光源１から入射した光を被照射体（原稿３）に伝搬・放出する、レンズアレイ４の両側に設置された第１及び第２の導光体（導光体２）と、前記第１及び第２の導光体（導光体２）を保持するフレーム（第２フレーム１０及び第３フレーム１１）とを備え、前記第１及び第２の導光体（導光体２）を主走査方向に分割しフレーム（第２フレーム１０及び第３フレーム１１）に保持するものである。   The image sensor according to the present invention has first and second light guides (light guides) installed on both sides of a lens array 4 for propagating and emitting light incident from a light source 1 to an irradiated body (original 3). 2) and frames (second frame 10 and third frame 11) for holding the first and second light guides (light guide 2), and the first and second light guides ( The light guide 2) is divided in the main scanning direction and held in the frames (second frame 10 and third frame 11).

この発明によれば、分割した導光体を複数個接続することで長尺な導光体を形成することができるという効果を奏する。   According to the present invention, there is an effect that a long light guide can be formed by connecting a plurality of divided light guides.

以下、この発明の実施の一形態を説明する。
実施の形態１．
図１は、実施の形態１によるイメージセンサの副走査方向（短軸方向）における断面図である。実施の形態１のイメージセンサは、光源１と、導光体２(第１及び第２の導光体)と、射出部２ａと、原稿（被照射体）３と、レンズアレイ４と、センサ５と、センサ基板６と、透過体７と、第１フレーム８と、光源用基板９と、第２フレーム１０と、第３フレーム１１と、コネクタ１２と、信号処理部１３と、外部コネクタ１４により構成されている。 An embodiment of the present invention will be described below.
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of the image sensor according to Embodiment 1 in the sub-scanning direction (short axis direction). The image sensor according to the first embodiment includes a light source 1, a light guide 2 (first and second light guides), an emission unit 2a, a document (illuminated body) 3, a lens array 4, and a sensor. 5, sensor substrate 6, transmission body 7, first frame 8, light source substrate 9, second frame 10, third frame 11, connector 12, signal processing unit 13, and external connector 14. It is comprised by.

ここで、光源１はＬＥＤを並べたＬＥＤ列や蛍光灯などの光源であり、導光体２は光源１から入射した光が、主走査方向（長軸方向）に渡り全反射を繰返して伝搬・放出する主走査方向で分割した導光体（光源が紫外線を発光する場合は、蛍光体を塗布して紫外線を可視光に変換する）であり、射出部２ａは導光体２内の光を外部に照射する導光体２の射出部であり、原稿３は被照射体としての原稿であり、レンズアレイ４は原稿３からの反射光を収束するレンズアレイであり、センサ５はレンズアレイ４で収束された光を受光して光電変換するセンサ（撮像素子・受光素子）であり、センサ基板６はセンサ５を（複数個）配列したセンサ基板であり、透過体７は原稿台又は原稿搬送路としての透過体（ガラス板）である。   Here, the light source 1 is a light source such as an LED array in which LEDs are arranged or a fluorescent lamp, and the light guide 2 propagates light incident from the light source 1 by repeating total reflection in the main scanning direction (long axis direction). A light guide divided in the main scanning direction to be emitted (if the light source emits ultraviolet light, a fluorescent material is applied to convert the ultraviolet light into visible light), and the emission part 2a is light in the light guide 2 The document 3 is a document as an irradiated body, the lens array 4 is a lens array that converges the reflected light from the document 3, and the sensor 5 is a lens array. 4 is a sensor (image pickup element / light receiving element) that receives and photoelectrically converts the light converged at 4, the sensor substrate 6 is a sensor substrate on which a plurality of sensors 5 are arranged, and the transmissive body 7 is a document table or a document. It is a transmission body (glass plate) as a conveyance path.

第１フレーム８はレンズアレイ４やセンサ基板６を保持するフレームであり、光源用基板９は光源１を設けた光源用基板であり、第２フレーム１０は導光体２と第１フレーム８を保持するフレームであり、第３フレーム１１は第２フレーム１０の下側で導光体２と光源用基板９を保持するフレームであり、コネクタ１２はセンサ５により光電変換した電気信号を光源用基板９に伝達するコネクタであり、信号処理部１３は光源用基板９に設けられ、コネクタ１２から伝達された電気信号を信号処理する信号処理回路であり、外部コネクタ１４は光源用基板９に設けられて信号処理部１３により処理された信号を外部に取り出すコネクタである。   The first frame 8 is a frame that holds the lens array 4 and the sensor substrate 6, the light source substrate 9 is a light source substrate provided with the light source 1, and the second frame 10 is a light guide 2 and the first frame 8. The third frame 11 is a frame for holding the light guide 2 and the light source substrate 9 below the second frame 10, and the connector 12 is a light source substrate for an electrical signal photoelectrically converted by the sensor 5. The signal processing unit 13 is a signal processing circuit that performs signal processing on the electrical signal transmitted from the connector 12, and the external connector 14 is provided on the light source substrate 9. This is a connector for taking out the signal processed by the signal processing unit 13 to the outside.

また、原稿３を搬送するプーリー（図示せず）や原稿３の搬送経路の一部を形成する天板（図示せず）はイメージセンサには通常組み込まれない。また、光源１及び導光体２は、図１に示すように、センサ５やレンズアレイ４等の両側にそれぞれ設け、ともに原稿３の照射点に照射する。   In addition, a pulley (not shown) that conveys the document 3 and a top plate (not shown) that forms a part of the conveyance path of the document 3 are not normally incorporated in the image sensor. As shown in FIG. 1, the light source 1 and the light guide 2 are provided on both sides of the sensor 5 and the lens array 4, respectively, and both irradiate the irradiation point of the document 3.

図２は、実施の形態１によるイメージセンサの主走査方向における上面透視図である。
レンズアレイ４の両側に備えた２つの導光体２を分割する分割部１５の分割位置が、主走査方向の垂直方向に対して同じ位置に設けている。 FIG. 2 is a top perspective view of the image sensor according to Embodiment 1 in the main scanning direction.
The dividing position of the dividing unit 15 that divides the two light guides 2 provided on both sides of the lens array 4 is provided at the same position with respect to the vertical direction of the main scanning direction.

図３は実施の形態１による主走査方向の垂直方向に対して分割した導光体を使用する場合のイメージセンサの照明強度分布図である。
図３(ａ)は、主走査方向の垂直方向に対して分割した導光体の分割位置が、主走査方向の垂直方向に対して異なる場合であり、分割した影響を受け、分割部１５で照明強度の変化（上昇／低下）が現れる。図３（ｂ）は、図２のように主走査方向の垂直方向に対して分割した導光体の分割位置が、主走査方向の垂直方向に対して同じである場合であり、レンズアレイ４の両側に備えた導光体の照明強度の変化（上昇／低下）が互いに相殺し照明強度が均一となる。 FIG. 3 is an illumination intensity distribution diagram of the image sensor when the light guide divided in the vertical direction of the main scanning direction is used according to the first embodiment.
FIG. 3A shows a case where the light guide divided by the vertical direction of the main scanning direction is different from the vertical direction of the main scanning direction. A change in illumination intensity (increase / decrease) appears. FIG. 3B shows a case where the division positions of the light guides divided in the vertical direction of the main scanning direction are the same in the vertical direction of the main scanning direction as shown in FIG. The changes (increase / decrease) in the illumination intensity of the light guides provided on both sides of each other cancel each other and the illumination intensity becomes uniform.

以上のように、実施の形態１によれば、イメージセンサは、光源１から入射した光を原稿３に伝搬・放出する、レンズアレイ４の両側に設置された導光体２と、導光体２を保持する第２フレーム１０及び第３フレーム１１とを備え、導光体２を主走査方向に分割し第２フレーム１０及び第３フレーム１１に保持することにより、分割した導光体２を複数個接続することで長尺な導光体を形成することができるという効果を奏し、光を通過させる導光体２を分割することで、導光体２における透過率のバラツキや導光体２を通過する光信号の歪を少なくなり、安価で製造容易な短軸の導光体２を用いることができるので、導光体２の製造を容易にするという効果を奏する。   As described above, according to the first embodiment, the image sensor propagates and emits the light incident from the light source 1 to the document 3, the light guide 2 installed on both sides of the lens array 4, and the light guide. 2 and the third frame 11, and the light guide 2 is divided in the main scanning direction and held in the second frame 10 and the third frame 11. By connecting a plurality of light guides, it is possible to form a long light guide, and by dividing the light guide 2 that allows light to pass therethrough, variations in the transmittance of the light guide 2 and the light guide The distortion of the optical signal passing through 2 can be reduced, and the short-axis light guide 2 that is inexpensive and easy to manufacture can be used. Therefore, the light guide 2 can be easily manufactured.

また実施の形態１によれば、イメージセンサは、導光体２を分割する分割位置が、主走査方向の垂直方向に対して同じ位置に設けることで、導光体２を分割することにより起こる特性の悪化（光量均一性の悪化）を防ぐことができるという効果を奏する。   Further, according to the first embodiment, the image sensor is generated by dividing the light guide 2 by providing the division position where the light guide 2 is divided at the same position with respect to the vertical direction of the main scanning direction. There is an effect that it is possible to prevent deterioration of characteristics (deterioration of uniformity of light quantity).

実施の形態２．
図４（ａ）は、実施の形態２によるイメージセンサの主走査方向の断面図であり、図４（ｂ）は、図４（ａ）で示す点線部分の拡大図である。図中、実施の形態１と同一符号は、同一又は相当部分を示しそれらについての詳細な説明は省略する。導光体２及び第３フレーム１１に、導光体２及び第３フレーム１１を嵌合させる嵌合部１６を備える。実施の形態２では図４で示すように、導光体２に凸型のピンの嵌合部１６を形成し、導光体２を保持する第３フレーム１１に凹型の穴の嵌合部１６を形成し、導光体２のピンと第３フレーム１１の穴部を嵌合させることで分割した導光体２同士の間隔（寸法）が一定になる。また実施の形態２では、導光体２に凸型のピンを形成し第３フレーム１１に凹型の穴を形成したが、導光体２に凹型の穴を形成し第３フレーム１１に凸型のピンを形成しても良い。 Embodiment 2. FIG.
4A is a cross-sectional view of the image sensor according to the second embodiment in the main scanning direction, and FIG. 4B is an enlarged view of a dotted line portion shown in FIG. In the figure, the same reference numerals as those in the first embodiment denote the same or corresponding parts, and detailed description thereof will be omitted. The light guide 2 and the third frame 11 are provided with a fitting portion 16 for fitting the light guide 2 and the third frame 11. In the second embodiment, as shown in FIG. 4, a convex pin fitting portion 16 is formed in the light guide 2, and a concave hole fitting portion 16 is formed in the third frame 11 holding the light guide 2. The distance (dimensions) between the light guides 2 divided by fitting the pins of the light guide 2 and the holes of the third frame 11 becomes constant. In the second embodiment, a convex pin is formed in the light guide 2 and a concave hole is formed in the third frame 11. However, a concave hole is formed in the light guide 2 and a convex shape is formed in the third frame 11. These pins may be formed.

また、導光体２に形成するピンの嵌合部１６及び第３フレーム１１に形成する穴の嵌合部１６の位置を導光体２の分割位置近傍にすることで温度変化等における導光体２またはフレームの寸法変化が発生した場合においても分割した導光体２同士の間隔の変化を防止できる。   In addition, the position of the pin fitting portion 16 formed in the light guide 2 and the hole fitting portion 16 formed in the third frame 11 is set in the vicinity of the division position of the light guide 2 to guide light in a temperature change or the like. Even when a dimensional change of the body 2 or the frame occurs, a change in the interval between the divided light guides 2 can be prevented.

以上のように、実施の形態２によれば、イメージセンサは、導光体２及び第３フレーム１１に、導光体２及び第３フレーム１１を嵌合させる嵌合部１６を備え、導光体２及び第３フレーム１１の嵌合部１６の一方が凸型を形成し、他方が凹型を形成することにより、主走査方向に分割した導光体２同士の間隔が一定となり、位置ズレ等を防止することができるという効果を奏する。   As described above, according to the second embodiment, the image sensor includes the light guide 2 and the third frame 11 and the fitting portion 16 that fits the light guide 2 and the third frame 11 to guide the light. When one of the body 2 and the fitting portion 16 of the third frame 11 forms a convex shape and the other forms a concave shape, the interval between the light guides 2 divided in the main scanning direction becomes constant, and a positional shift or the like There is an effect that can be prevented.

また実施の形態２によれば、イメージセンサは、導光体２及び第３フレーム１１の嵌合部１６を導光体２の分割部１５近傍に備えることにより、温度変化により分割した導光体２及び第３フレーム１１の線膨張係数の違いによる寸法変化量の差の影響をふせぎ、主走査方向に対して垂直方向に分割した導光体２同士の間隔の変化を防止することができるという効果を奏する。   According to the second embodiment, the image sensor includes the light guide 2 and the fitting portion 16 of the third frame 11 in the vicinity of the division portion 15 of the light guide 2, thereby dividing the light guide by the temperature change. It is possible to prevent the change in the interval between the light guides 2 divided in the direction perpendicular to the main scanning direction by blocking the influence of the difference in dimensional change due to the difference in linear expansion coefficient between the second and third frames 11. There is an effect.

実施の形態３．
図５（ａ）は、実施の形態３によるイメージセンサの主走査方向の断面図であり、図５（ｂ）は、図５（ａ）で示す点線部分の拡大図である。図中、実施の形態１及び２と同一符号は、同一又は相当部分を示しそれらについての詳細な説明は省略する。導光体２及び第２フレーム１０に、導光体２及び第２フレーム１０を嵌合させる嵌合部１７を備え、実施の形態３では、図５で示すように、導光体２分割位置の主走査方向に対して反対側に形成した凸部の嵌合部１７と第２フレーム１０内部に形成した凹部の嵌合部１７を備えている。導光体２の凸部の嵌合部１７と第２フレーム１０内部の凹部の嵌合部１７を嵌合することにより、導光体２が副走査方向（短軸方向）に倒れることを防止できる。 Embodiment 3 FIG.
5A is a cross-sectional view in the main scanning direction of the image sensor according to the third embodiment, and FIG. 5B is an enlarged view of a dotted line portion shown in FIG. 5A. In the figure, the same reference numerals as those in the first and second embodiments denote the same or corresponding parts, and a detailed description thereof will be omitted. The light guide 2 and the second frame 10 are provided with a fitting portion 17 for fitting the light guide 2 and the second frame 10, and in the third embodiment, as shown in FIG. A convex fitting portion 17 formed on the opposite side to the main scanning direction and a concave fitting portion 17 formed inside the second frame 10. By fitting the fitting portion 17 of the convex portion of the light guide 2 and the fitting portion 17 of the concave portion inside the second frame 10, the light guide 2 is prevented from falling in the sub-scanning direction (short axis direction). it can.

図６は、この発明の実施の形態３によるイメージセンサの導光体及びフレームの嵌合部における嵌合面の図である。図６（ａ）は導光体２の端部凸部及び第２フレーム１０の内側凹部の嵌合前の図であり、図６(ｂ)は嵌合後の図である。導光体２の端部の凸部と第２フレーム１０内側の凹部の形状にテーパをつけて嵌合面を台形状にし、テーパの広い方向から狭い方向に向けて傾斜がある。そして、導光体２の凸部を第２フレーム１０内側の凹部のテーパの広い方向から狭い方向に滑り込ませて嵌合させることにより、導光体２凸部と第２フレーム１０凹部が嵌合されるので、容易に嵌合させることができ、導光体２を第２フレーム１０に固定することができるので、導光体２が副走査方向（短軸方向）に倒れることを防止できる。また、導光体２の端部の凸部と第２フレーム１０内側の凹部のいずれか一方に形状にテーパをつけて嵌合面を台形状にすることも可能であり、例えば導光体２の端部の凸部だけテーパをつけて嵌合面を台形状にしても、導光体２を第２フレーム１０に滑り込ませることができるので嵌合しやすくなり、また少なくとも１点で導光体２を固定することができるので、導光体２が副走査方向に倒れることを防止できる。実施の形態３では、導光体２に凸部を形成し、第２フレーム１０に凹部を形成しているが、導光体２に凹部を形成し、第２フレーム１０に凸部を形成しても良い。   FIG. 6 is a diagram of a fitting surface in a fitting portion of a light guide and a frame of an image sensor according to Embodiment 3 of the present invention. FIG. 6A is a diagram before fitting the end convex portion of the light guide 2 and the inner concave portion of the second frame 10, and FIG. 6B is a diagram after the fitting. The shape of the convex part at the end of the light guide 2 and the concave part inside the second frame 10 is tapered to make the fitting surface trapezoidal, and there is an inclination from a wide taper direction to a narrow direction. Then, the convex part of the light guide 2 and the concave part of the second frame 10 are fitted by sliding the convex part of the light guide 2 into the narrow direction from the wide taper direction of the concave part inside the second frame 10. Therefore, the light guide 2 can be easily fitted and the light guide 2 can be fixed to the second frame 10, so that the light guide 2 can be prevented from falling in the sub-scanning direction (short axis direction). It is also possible to taper the shape of either the convex portion at the end of the light guide 2 or the concave portion inside the second frame 10 to make the fitting surface trapezoidal. For example, the light guide 2 Even if the convex portion at the end of the taper is tapered to make the fitting surface trapezoidal, the light guide 2 can be slid into the second frame 10 so that it can be easily fitted, and light is guided at least at one point Since the body 2 can be fixed, the light guide 2 can be prevented from falling in the sub-scanning direction. In Embodiment 3, the light guide 2 is formed with a convex portion and the second frame 10 is formed with a concave portion. However, the light guide body 2 is formed with a concave portion and the second frame 10 is formed with a convex portion. May be.

以上のように、実施の形態３によれば、イメージセンサは、導光体２及び第２フレーム１０に、導光体２及び第２フレーム１０を嵌合させる嵌合部１７を備え、導光体２及び第２フレーム１０の嵌合部１７を導光体２の分割位置の主走査方向に対して反対側に形成することにより、第２フレーム１０に対する導光体の副走査方向の倒れ込みを防止することができるという効果を奏する。   As described above, according to the third embodiment, the image sensor includes the light guide 2 and the second frame 10 including the fitting portion 17 that fits the light guide 2 and the second frame 10. By forming the fitting portion 17 of the body 2 and the second frame 10 on the opposite side to the main scanning direction of the division position of the light guide 2, the light guide is tilted with respect to the second frame 10 in the sub-scanning direction. There is an effect that it can be prevented.

また実施の形態３によれば、イメージセンサは、導光体２及び第２フレーム１０の少なくともいずれか一方の嵌合部１７における嵌合面を台形状にすることにより、容易に嵌合させることができるという効果を奏する。   Further, according to the third embodiment, the image sensor can be easily fitted by making the fitting surface of the fitting part 17 of at least one of the light guide 2 and the second frame 10 trapezoidal. There is an effect that can be.

この発明の実施の形態１によるイメージセンサの副走査方向の断面図である。It is sectional drawing of the subscanning direction of the image sensor by Embodiment 1 of this invention. この発明の実施の形態１によるイメージセンサの主走査方向の上面透視図である。FIG. 2 is a top perspective view in the main scanning direction of the image sensor according to Embodiment 1 of the present invention. この発明の実施の形態１による主走査方向の垂直方向に対して分割した導光体を使用する場合のイメージセンサの照明強度分布図である。It is an illumination intensity distribution figure of the image sensor in the case of using the light guide divided | segmented with respect to the orthogonal | vertical direction of the main scanning direction by Embodiment 1 of this invention. この発明の実施の形態２によるイメージセンサの主走査方向の断面図である。It is sectional drawing of the main scanning direction of the image sensor by Embodiment 2 of this invention. この発明の実施の形態３によるイメージセンサの主走査方向の断面図である。It is sectional drawing of the main scanning direction of the image sensor by Embodiment 3 of this invention. この発明の実施の形態３によるイメージセンサの導光体及びフレームの嵌合部における嵌合面の図である。It is a figure of the fitting surface in the light guide of the image sensor by Embodiment 3 of this invention, and the fitting part of a flame | frame.

符号の説明Explanation of symbols

１ 光源、２ 導光体、２ａ 射出部、３ 原稿、４ レンズアレイ、５ センサ、６ センサ基板、７ 透過体、８ 第１フレーム、９ 光源用基板、１０ 第２フレーム、１１ 第３フレーム、１２ コネクタ、１３ 信号処理部、１４ 外部コネクタ、１５ 分割部、１６，１７ 嵌合部。   DESCRIPTION OF SYMBOLS 1 Light source, 2 Light guide, 2a Ejection part, 3 Original, 4 Lens array, 5 Sensor, 6 Sensor board | substrate, 7 Transmission body, 8 1st frame, 9 Light source board | substrate, 10 2nd frame, 11 3rd frame, 12 connectors, 13 signal processing parts, 14 external connectors, 15 division parts, 16, 17 fitting parts.

Claims (7)

光源から入射した光を被照射体に伝搬・放出する、レンズアレイの両側に設置された第１及び第２の導光体と、
前記第１及び第２の導光体を保持するフレームとを備え、
前記第１及び第２の導光体を主走査方向に分割し上記フレームに保持することを特徴とするイメージセンサ。 First and second light guides installed on both sides of the lens array for propagating and emitting light incident from the light source to the irradiated body;
A frame for holding the first and second light guides,
An image sensor characterized in that the first and second light guides are divided in the main scanning direction and held in the frame. 第１及び第２の導光体を分割する分割位置が、主走査方向の垂直方向に対して同じ位置に設けることを特徴とする請求項１記載のイメージセンサ。   The image sensor according to claim 1, wherein the first and second light guides are divided at the same position with respect to a direction perpendicular to the main scanning direction. 導光体及びフレームに、前記導光体及び前記フレームを嵌合させる嵌合部を備えることを特徴とする請求項１記載のイメージセンサ。   The image sensor according to claim 1, further comprising a fitting portion that fits the light guide and the frame on the light guide and the frame. 導光体及びフレームの嵌合部の一方が凸型を形成し、他方が凹型を形成することを特徴とする請求項３記載のイメージセンサ。   4. The image sensor according to claim 3, wherein one of the light guide and the fitting portion of the frame forms a convex shape, and the other forms a concave shape. 導光体及びフレームの嵌合部を前記導光体の分割部近傍に備えることを特徴とする請求項３記載のイメージセンサ。   The image sensor according to claim 3, further comprising a light guide and a frame fitting portion in the vicinity of the divided portion of the light guide. 導光体及びフレームの嵌合部を前記導光体の分割位置の主走査方向に対して反対側に形成することを特徴とする請求項３記載のイメージセンサ。   The image sensor according to claim 3, wherein the fitting portion of the light guide and the frame is formed on the side opposite to the main scanning direction of the division position of the light guide. 導光体及びフレームの少なくともいずれか一方の嵌合部における嵌合面を台形状にすることを特徴とする請求項６記載のイメージセンサ。   The image sensor according to claim 6, wherein a fitting surface of at least one of the light guide and the frame has a trapezoidal shape.
JP2006329754A 2006-12-06 2006-12-06 Image sensor Expired - Fee Related JP4417368B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006329754A JP4417368B2 (en) 2006-12-06 2006-12-06 Image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006329754A JP4417368B2 (en) 2006-12-06 2006-12-06 Image sensor

Publications (2)

Publication Number Publication Date
JP2008147772A true JP2008147772A (en) 2008-06-26
JP4417368B2 JP4417368B2 (en) 2010-02-17

Family

ID=39607495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006329754A Expired - Fee Related JP4417368B2 (en) 2006-12-06 2006-12-06 Image sensor

Country Status (1)

Country Link
JP (1) JP4417368B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010050689A (en) * 2008-08-21 2010-03-04 Rohm Co Ltd Image reading apparatus
WO2013012066A1 (en) * 2011-07-21 2013-01-24 京セラ株式会社 Lighting device, image sensor head and reading device provided with same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10190959A (en) * 1996-12-27 1998-07-21 Rohm Co Ltd Image reader, linear light source device used therefor, and light-transmitting member
JP2001238048A (en) * 2000-02-23 2001-08-31 Rohm Co Ltd Image reader and light guiding member used for the same
WO2006049206A1 (en) * 2004-11-05 2006-05-11 Mitsubishi Denki Kabushiki Kaisha Illuminator and image reader employing it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10190959A (en) * 1996-12-27 1998-07-21 Rohm Co Ltd Image reader, linear light source device used therefor, and light-transmitting member
JP2001238048A (en) * 2000-02-23 2001-08-31 Rohm Co Ltd Image reader and light guiding member used for the same
WO2006049206A1 (en) * 2004-11-05 2006-05-11 Mitsubishi Denki Kabushiki Kaisha Illuminator and image reader employing it

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010050689A (en) * 2008-08-21 2010-03-04 Rohm Co Ltd Image reading apparatus
WO2013012066A1 (en) * 2011-07-21 2013-01-24 京セラ株式会社 Lighting device, image sensor head and reading device provided with same
JPWO2013012066A1 (en) * 2011-07-21 2015-02-23 京セラ株式会社 Illumination device, image sensor head, and reader having the same

Also Published As

Publication number Publication date
JP4417368B2 (en) 2010-02-17

Similar Documents

Publication Publication Date Title
US8681396B2 (en) Image sensor unit and image reading apparatus using the same
KR101600207B1 (en) Image sensor unit and image reading device utilizing same
US10536603B2 (en) Light guide and image reading apparatus
WO2014024623A1 (en) Contact image sensor, output correction device for contact image sensor, and output correction method for contact image sensor
US8279499B2 (en) Single LED dual light guide
JP2009302646A (en) Rod-shaped light guide and image reading device
US10911632B2 (en) Image scanning device
JP2011124741A (en) Illuminator and image reading apparatus
JP5606350B2 (en) Light guide unit and image reading apparatus
JP6435790B2 (en) Light irradiation apparatus, image reading apparatus, and image forming apparatus
JP5896629B2 (en) Carriage unit
JP4417368B2 (en) Image sensor
JP5012790B2 (en) Illumination device and image reading device using the same
JP2006041600A (en) Illuminating apparatus, contact type image sensor, and image forming apparatus provided therewith
JP6395988B1 (en) Light guide and image reading apparatus
JP5100584B2 (en) Illumination system and image reading apparatus using the same
JP2006039996A (en) Recognition device for paper sheet
JP5821351B2 (en) LIGHTING DEVICE, IMAGE SENSOR USING THE SAME, AND IMAGE SENSOR MANUFACTURING METHOD
JP2003348299A (en) Line illuminator and reader
JP5087520B2 (en) Image sensor module
WO2019244459A1 (en) Illuminating device and image reading device
JP6520402B2 (en) Light irradiation apparatus, image reading apparatus and image forming apparatus
KR20210090804A (en) structure for uniform light distribution of scanner
JP4733557B2 (en) Image reading apparatus and image forming apparatus
JP2007189583A (en) Image reader and secondary irradiating light reducing method

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20080704

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090629

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090804

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091001

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20091117

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091125

R150 Certificate of patent or registration of utility model

Ref document number: 4417368

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121204

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121204

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131204

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees