JP2009181403A - Image sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image sensor for determining authentication of illuminated matter by receiving a reflected light in an area where an optical change pattern such as hologram, is bonded or printed on the illuminated matter. <P>SOLUTION: Provided are: a light source of a light guiding body on one side having a plurality of optical wavelength for illuminating the light on an illuminating part; the light source of the light guiding body on the other side for illuminating the light on the illuminating part from an illuminating angle different from the light source of the light guiding body on the one side; and an LED array light source arranged along the illuminating angle area of the light source of the light guiding body on the other side mounted with the LED chip in an array shape for illuminating the light on the illuminating part via the light source of the light guiding body on the other side. By selectively controlling lighting of the light source of the light guiding body on the one side, the light source of the light guiding body on the other side, and the LED array light source, the light illuminated from the different angle is received, and an electrical signal in the hologram area of the illuminated matter is detected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image sensor that reads a hologram portion of an irradiated object such as a banknote.

  Conventionally, as a reading device such as an image sensor, for example, there is a label identification device described in FIG. 1 (Patent Document 1) of Japanese Patent Laid-Open No. 2000-293105. In Patent Document 1, the light receiving surface of the reflector of the optical identification label 1 is irradiated with the beam light from one light source 10, and the light receiving surface of the reflector converts the beam light into two reflected lights. The light component A is sent toward the first sensor 11, and the second light component B is sent toward the second sensor 12. In the paper sheet recognition apparatus described in FIG. 1 (Patent Document 2) of Japanese Patent Application Laid-Open No. 2006-39996, the light emitted from the illumination device 10 and transmitted through the paper sheet 20 is received by the lens array 11. The structure leading to 12 is disclosed.

  Further, FIG. 1 (see Patent Document 3) of Japanese Patent Laid-Open No. 2007-249475 discloses a transport unit that transports an irradiation object 1 having a hologram region in a transport direction, and a first unit that irradiates light to an irradiation unit 3a in the hologram region. 1 light source 4, and a second light source 6 provided to be separated from the first light source 4 along the transport direction and irradiate light to the irradiation unit 3 b in the hologram region when the hologram region is transported by a predetermined distance. The irradiation angle at which the light from the first light source 4 is irradiated to the irradiation unit 3a is different from the irradiation angle at which the light from the second light source 6 is irradiated to the irradiation unit 3b when the hologram region is conveyed by a predetermined distance. A configuration is described in which reflected light from the hologram region is received, and an electrical signal related to the hologram region of the irradiated object 1 is detected.

JP 2000-293105 A (FIG. 1)

Japanese Patent Laying-Open No. 2006-39996 (FIG. 1)

JP 2007-249475 A (FIG. 1)

  However, the label identification device described in Patent Document 1 irradiates light from the light source onto the light receiving surface of the reflector of the label, and two types of light components reflected on the light receiving surface are different in two installation angles. However, since there is no lens to focus the light, the reading position and focus position of the image to be identified are not determined, and it is possible to identify whether the label is genuine or not. However, there is a problem that it is insufficient for identifying a label at a precise pixel level. In addition, the recognition device described in Patent Document 2 has a problem in that it can recognize the shape of a paper sheet, but in principle cannot read a portion that is not transmitted through the paper sheet. .

  Further, the image reading apparatus described in Patent Literature 3 reads an image in a hologram area with a white light source or the like and determines authenticity of an irradiated object, but there is no detailed description of a light source portion.

  The present invention uses a plurality of light sources having different wavelengths to detect the authenticity of the irradiated object by receiving the reflected light in an area where an optical change pattern such as a hologram is pressed or printed on the irradiated object. It is an object to provide an image sensor that can be discriminated.

  The present invention also provides reflected light generated in the hologram region by irradiating a plurality of light sources having different wavelengths to the hologram portion (region) from different angles to the irradiation unit provided along the conveyance path of the irradiated object. It is an object of the present invention to provide an image sensor capable of performing true / false discrimination with higher accuracy by detecting the difference between the spectra.

  An image sensor according to a first aspect of the present invention relates to one light guide light source having a plurality of optical wavelengths for irradiating light to an irradiation portion in a hologram region of an object to be irradiated, and an irradiation angle different from that of the one light guide light source. The other light guide light source having a plurality of optical wavelengths for irradiating light to the irradiating portion and the irradiation angle region of the other light guide light source are provided, and the irradiation is performed via the other light guide light source. An LED array light source in which LED chips are mounted in an array for irradiating light to the part, a lens array reflected by the irradiating part and converging the reflected light, and a light receiving part for receiving the light converged by the lens array, A sensor substrate on which the light receiving unit is placed, and a housing for housing or holding the one light guide light source, the other light guide light source, the LED array light source, the lens array, and the sensor substrate. , By selectively controlling lighting of one light guide light source, the other light guide light source, and the LED array light source, light irradiated from different angles is received, and an electric signal of the hologram region of the irradiated object is received. It is to detect.

  The image sensor according to claim 2 is characterized in that the array interval of the LED chips of the LED array light source arranged in an array becomes narrower as it gets closer to the center of the irradiation area. is there.

  The image sensor according to claim 3, wherein the transparent resin that covers the LED chips of the LED array light source arranged in an array becomes thicker as it approaches the center of the irradiation region. Is.

  An image sensor according to a fourth aspect of the present invention is directed to one light guide light source having a plurality of optical wavelengths for irradiating light to an irradiation part in a hologram region of an object to be irradiated, and an irradiation angle region of the one light guide light source. A first LED array light source in which LED chips are mounted in an array to irradiate light to the irradiating unit via the one light guide light source, and the irradiation from an irradiation angle different from that of the one light guide light source The other light guide light source having a plurality of optical wavelengths for irradiating light to the part, and the irradiation part provided along the irradiation angle region of the other light guide light source, through the other light guide light source A second LED array light source in which LED chips are mounted in an array for irradiating light, a lens array reflected by the irradiating unit and converging the reflected light, and a light receiving unit for receiving the light converged by the lens array, This A sensor substrate on which a light receiving unit is placed, and the one light guide light source, the other light guide light source, the first LED array light source, the second LED array light source, the lens array, and the sensor substrate are accommodated or held. A light guide light source, the other light guide light source, the first LED array light source, and the second LED array light source are selectively controlled to turn on light irradiated from different angles. It receives light and detects an electrical signal in the hologram area of the irradiated object.

  The image sensor according to claim 5 is characterized in that the array interval of the LED chips of the first LED array light source and the second LED array light source arranged in an array becomes narrower as it gets closer to the center of the irradiation area. 4.

  The image sensor according to claim 6 is characterized in that the transparent resin covering the LED chips of the first LED array light source and the second LED array light source arranged in an array becomes thicker as it gradually approaches the center of the irradiation area. It is a thing of Claim 4.

  An image sensor according to claim 7 has one light guide light source having a plurality of optical wavelengths for irradiating light to an irradiation part in a hologram region of an object to be irradiated, and having a light scattering layer disposed along the irradiation part. The other light guide light source having a plurality of optical wavelengths for irradiating light to the irradiating unit from an irradiation angle different from that of the one light guide light source, and having a light scattering layer disposed along the irradiating unit, An LED array light source that is provided along an irradiation angle region of the other light guide light source, and that has LED chips mounted in an array shape that irradiates light to the irradiation unit via the other light guide light source, and the irradiation unit A lens array that converges the reflected light, a light receiving unit that receives the light converged by the lens array, a sensor substrate on which the light receiving unit is placed, the one light guide light source, and the other Light guide light source, LED array A housing for housing or holding the lens array and the sensor substrate, and selectively controlling lighting of the one light guide light source, the other light guide light source, and the LED array light source, Light emitted from different angles is received, and an electrical signal in the hologram area of the irradiated object is detected.

  The image sensor according to claim 8 is characterized in that the pattern interval between the light scattering layers of the one light guide light source and the other light guide light source becomes narrower as it approaches the center of the irradiation region. It is a thing of Claim 7.

  In the image sensor according to claim 9, the light scattering layer pattern of the one light guide light source and the other light guide light source becomes wider and has a blank pattern as it approaches the center of the irradiation region. It is a thing of Claim 7 characterized by the above-mentioned.

  According to the present invention, the irradiation object is irradiated with light including a plurality of spectra, and the reflected light from the irradiation object is selectively received at each irradiation angle, so that an output corresponding to the color of the hologram is obtained as image information. It is possible.

  In addition, since the light guide light source and the LED array light source having different irradiation angles are mounted in the same image sensor, a large number of LED chips are mounted on the LED array light source side for a light source that requires high brightness. Therefore, it is possible to obtain an image output necessary for authenticating the irradiated object in a short time.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIG. FIG. 1 is a cross-sectional configuration diagram of an image sensor according to the first embodiment. In FIG. 1, reference numeral 1 denotes an object to be irradiated such as a banknote, a manuscript, a securities, or a check, and preferably a thermocompression bonding part, a printing part, and a sticker attached with a holographic treatment (holography) on a transparent substrate. It has a region where light is relatively difficult to pass through, such as an attachment portion and other portions where the color changes depending on the viewing angle.

  Reference numeral 2 denotes a conveyance roller (conveyance means) that conveys the irradiated object 1 (banknote 1), 2a is a sheet feeding side conveyance roller, 2b is a sheet discharge side conveyance roller, and 2c is a positioning roller that determines the position of the banknote 1. is there. 3 is an irradiating unit in the conveyance path of the banknote 1, 4 is a light guide, 4a is a first light guide that irradiates the irradiating unit 3 from one side at a wide angle, and 4b is an irradiating unit 3 from one side at a narrow angle. The second light guide 4c is a third light guide that irradiates the irradiation unit 3 at a narrow angle from the other, 4d is a fourth light guide that irradiates the irradiation unit 3 at a wide angle from the other, and 5 is an LED array light source. Yes, 5a is a first LED array light source that irradiates the irradiation unit 3 at a wide angle from one side, 5b is a second LED array light source that irradiates the irradiation unit 3 at a wide angle from the other side, and 6 converges the reflected light of the light irradiated on the banknote 1 A lens array (rod lens array) 7 is a sensor (light receiving unit) configured to receive a light converged by the lens array 6 and linearly arrange a plurality of semiconductor chips for photoelectric conversion. Built-in photoelectric conversion unit (photoelectric conversion circuit) and their drive circuit Consisting of sensor IC.

  Reference numeral 8 denotes a sensor substrate on which the sensor 7 is placed. Reference numeral 9 denotes an A / D conversion of an analog signal photoelectrically converted by the sensor 7, signal processing is performed for each pixel, and image information from the banknote 1 is calculated and processed. It is a signal processing IC (ASIC).

  Reference numeral 10 denotes a signal processing board (board) constituted by a printed wiring board or the like on which electronic components are mounted, and 11 denotes electronic parts such as capacitors, which are mounted on the board 10. Reference numeral 12 denotes a transparent body made of a plastic material or glass material provided along the conveyance path, and reference numeral 13 denotes a housing for storing or holding the light guide body 4, the LED array light source 5, the lens array 6, the sensor substrate 8, the substrate 10, and the like. , 14 is a light guide supporter for placing the light guide 4 at each predetermined position, and 15 is a screw (substrate mounting portion) that makes the substrate 10 detachable. In the drawings, the same reference numerals indicate the same or corresponding parts.

  FIG. 2 is a cross-sectional view illustrating the light source arrangement of the image sensor according to the first embodiment. In FIG. 2, four LED chips (indicated by abcd) are arranged on the end faces of the light guides 4a to 4d. The light guide 4a irradiates the irradiation unit 3 with light at a wide angle of 60 [deg.] With the vertical plane in the conveyance direction of the bill 1 as an axis. The light guide 4b irradiates the irradiation unit 3 with light at a narrow angle of 30 [deg.] With the vertical plane in the conveyance direction of the banknote 1 as an axis. The light guide 4c irradiates the irradiation unit 3 with light at a narrow angle of 30 [deg.] With the vertical plane in the conveyance direction of the banknote 1 as an axis. The light guide 4d irradiates the irradiation unit 3 with light at a wide angle of 60 [deg.] With the vertical plane in the conveyance direction of the bill 1 as an axis.

  The LED array light source 5a irradiates the irradiation unit 3 with light at a wide angle of 60 [deg.] About the vertical plane in the conveyance direction of the bill 1 via the light guide 4a. The LED array light source 5b irradiates the irradiation unit 3 with light at a wide angle of 60 [deg.] About the vertical plane in the conveyance direction of the bill 1 via the light guide 4d. 2, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.

  FIG. 3 is a development view of mounted parts of the image sensor according to the first embodiment. In FIG. 3, 16 is a holder having a hollow portion that holds both side end portions of the light guide 4, and 17 is an LED substrate (flexible cable substrate) in which an LED chip is inserted into the hollow portion of the holder 16 and patterned. Reference numeral 18 denotes an external connector supported by the substrate 10 for supplying power to a system signal (SCLK), a start signal (SI), a clock signal (CLK), an input signal such as a power source and a light source, and other control signals. It has a role of outputting and further outputting an image signal (SIG) and the like to the outside. The light guide 4 and the LED substrate 17 are collectively referred to as a light guide light source. 3, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.

  Next, the configuration of hologram reading will be described. FIG. 4 is a diagram in which two image sensors (referred to as CIS) are arranged in parallel along the conveyance direction of the banknote 1. In FIG. 4, 3a is a 1st irradiation part, 3b is a 2nd irradiation part. 21 is an image sensor, 21a is a first image sensor (CIS), and 21b is a second image sensor (CIS). These are set apart by a certain distance in the transport direction. Further, as shown in FIG. 5, in a reading device such as an image sensor mounted on a banknote discriminator (paper sheet discriminating device) used in the financial terminal field or the like, the front and back images of the banknote 1 are simultaneously conveyed by one transport. An image may be read. In FIG. 5, 21c is a third image sensor (CIS) for reading the back side of the banknote 1, 21d is a fourth image sensor (CIS) for reading the back side of the banknote 1, and the CIS for reading the back side is also constant in the transport direction. Set the distance apart. 4 and 5, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.

  When the front and back of the banknote 1 are read simultaneously, the CIS 21a and CIS 21b are arranged on one side of the conveyance path of the banknote 1, whereas the CIS 21c and CIS 21d are arranged upside down on the other side of the CIS 21a and CIS 21b. The Therefore, in the main scanning direction (reading width direction) orthogonal to the banknote 1 conveyance direction, the CIS 21a and CIS 21b have the same scanning direction and are scanned from the left end to the right end, while the CIS 21c and CIS 21d have the same scanning direction. Scanning from the right end to the left end. In addition, the irradiation unit 3a and the irradiation unit 3c, and the irradiation unit 3b and the irradiation unit 3d are set apart from each other in order to prevent light source interference in the transport path. In the figure, the same reference numerals as those in FIG. 4 denote the same or corresponding parts.

  Next, the hologram reading operation will be described with reference to FIG. When reading the image of the hologram area of the banknote 1, the read image is subjected to signal processing by changing the irradiation angle of the light source. Therefore, first, the image of the banknote 1 conveyed by the conveying roller 2a is subjected to signal processing by taking in the light irradiated from the light guides 4a and 4d in the irradiation unit 3a of the CIS 21a. Next, the image of the banknote 1 continuously conveyed by the conveyance roller 2b is subjected to signal processing by taking in the light irradiated from the light guides 4b and 4c in the irradiation unit 3b of the CIS 21b.

  In the signal processing, the image obtained in the hologram area of the CIS 21a and the image obtained in the hologram area of the CIS 21b are differentially processed to determine the authenticity of the hologram. Further, since the hologram image differs depending on the wavelength of light to be irradiated, it is possible to determine the authenticity with high accuracy by appropriately changing the light source color. In the case of simple authenticity determination, narrow-angle irradiation and wide-angle irradiation may be alternately turned on within one line reading section using one CIS.

  Moreover, when reading the image fluorescently emitted with the banknote 1, it reads by irradiating illumination light with comparatively short optical wavelengths, such as an ultraviolet-ray (UV light).

  Next, an illumination device using the light guide 4 and the LED array light source 5 will be described. FIG. 6 is a light guide cross-sectional view of the image sensor according to the first embodiment. In FIG. 6, reference numeral 40 denotes a light scattering layer printed with a white silk material on the bottom surface of the light guide 4 in the longitudinal direction (main scanning direction). 7 shows various patterns of the light scattering layer, FIG. 7A shows a linear pattern in which the width and pattern interval change in the longitudinal direction of the light guide 4, and FIG. 7B shows the longitudinal direction of the light guide 4. FIG. 7C shows a hollow rhombus pattern in which the width and the pattern interval change. In FIG. 7, reference numeral 41 denotes an island-like light scattering layer pattern provided near the central portion that is separated from the end of the irradiation region, 42 indicates light that is asymptotic to the central portion of the irradiation region and widened, and a hollow pattern is provided therein. It is a scattering layer pattern.

  In the first embodiment, since the light guide 4 is provided with LED chips mounted on the LED substrate 17 on both sides, as shown in FIG. It is designed so that there are many. On the other hand, the pattern spacing of the light scattering layer of the light guide 4 becomes narrower as it approaches the center of the irradiation area, and the pattern near the center is changed from a line shape to an island shape as shown in FIG. You may improve the transmittance | permeability of the transmitted light amount of the LED array light source 5 provided via the light body 4. FIG. As another means, the light scattering layer pattern of the light guide 4 becomes wider as it approaches the center of the irradiation area, and a blank pattern is provided in the wide area as shown in FIG. The transmittance of the transmitted light amount of the LED array light source 5 provided via the light guide 4 may be improved.

  Although the light scattering layers 40, 41, and 42 have been described using printed patterns in the first embodiment, the light-scattering layer may be formed by roughening the surface roughness on the bottom surface side in the irradiation direction of the light guide 4.

  FIG. 8 is a plan view of the LED array light source of the image sensor according to the first embodiment, and 50 is an ultraviolet (UV) light source. In FIG. 8, the UV light source reads the fluorescence emitted from the banknote 1 by irradiating the banknote 1. The LED array light source 5 equipped with the UV light source 50 is arranged in order to make the central portion in the longitudinal direction of the LED array light source 5 a dense light emitting region so as to compensate for the amount of light blocked by the light scattering layer installed by the light guide 4. The pitch to be made is shortened toward the center (indicated by C <B <A).

  9A and 9B are diagrams for explaining the LED array light source of the image sensor according to the first embodiment. FIG. 9A is a plan view of the LED array light source arranged at an equal pitch, and FIG. 9B is a side view thereof. , 51 is a resin coating layer for protecting the UV light source 50. In FIG. 9, even when the arrangement pitch of the UV light sources 50 is set to an equal pitch, the central portion in the longitudinal direction of the LED array light source 5 emits dense light so as to compensate for the amount of light shielded by the light scattering layer installed by the light guide 4. By making the resin coating layer 51 thicker at the center (indicated by h3> h2> h1) in order to make it a region, the thicker the resin coating layer 51, the greater the light condensing property due to the lens effect due to the resin. Will increase.

  8 and 9, the light source of the LED chip is the UV light source 50, but it may be a blue light source, and other than the application of receiving the fluorescence emission of the banknote 1, there are many different wavelengths mounted on the light guide 4. Similar to the LED chip light source, a large number of LED chips with different wavelengths may be mounted on the substrate surface of the LED array light source 5, and the LED array light source 5 may be used for the purpose of increasing the amount of irradiation light.

  FIG. 10 is a plan view of the LED substrate mounted on the end portion of the light guide of the image sensor according to the first embodiment. In FIG. 10, 60 is an LED chip, 60a is a green light source (G light source), and 60b is an infrared (IR) light source. 70 is a pattern of the LED substrate 17, 70a is a common electrode pattern (VLED), 70b is an individual pattern (C1) of the G light source 60a, 70c is an individual pattern of the IR light source 60b, 70d is a dummy pattern, and 80 is a gap (slit). ) Pattern. Reference numeral 90 denotes a wire using a gold wire or an aluminum wire for connecting the anode and the cathode of the LED chip 60 to the pattern of the LED substrate 17.

  FIG. 11 is a wiring diagram of the LED substrate 17 shown in FIG. The LED drive current supplied from the terminal of the LED board 17 flows to the common electrode pattern 70a and returns to the terminal of the LED board 17 from C1 (70b) and C2 (70b).

  In FIG. 2, the irradiation unit 3a is irradiated with light from the LED array light source 5a via the first light guide 4a, and the light from the LED array light source 5b is irradiated via the fourth light guide 4d. The LED array light source may be provided via the light guide 4b and the light guide 4c. Moreover, you may provide an LED array light source through all the light guides 4a-4d.

  Moreover, in this Embodiment 1, although it irradiated from the conveyance direction both sides of the banknote 1 with respect to the irradiation part 3, when the banknote 1 conveyed does not have a wrinkle or the float by conveyance, it irradiates from one side direction You may make it do.

  As described above, since the light guide light source and the LED array light source having different irradiation angles are mounted in the same image sensor, a large number of LED chips are mounted on the LED array light source side for a light source that requires high brightness. As a result, it is possible to obtain an image output necessary for determining the authenticity of the hologram with respect to the irradiated object in a short time.

1 is a cross-sectional configuration diagram of an image sensor according to Embodiment 1 of the present invention. It is sectional drawing explaining the light source arrangement | positioning of the image sensor which concerns on Embodiment 1 of this invention. FIG. 3 is a development view of mounted parts of the image sensor according to the first embodiment of the present invention. It is explanatory drawing which has arrange | positioned two image sensors in parallel along the conveyance direction of a banknote. It is explanatory drawing which has arrange | positioned the image sensor which reads the image of the front and back of a banknote simultaneously by 1 conveyance. It is light guide body sectional drawing of the image sensor which concerns on Embodiment 1 of this invention. FIG. 7A is a pattern diagram of a light scattering layer of the image sensor according to Embodiment 1 of the present invention, FIG. 7A is a linear pattern diagram, FIG. 7B is a linear / island pattern diagram, and FIG. c) is a wide hollow pattern diagram asymptotic to the central portion. It is a top view of the LED array light source of the image sensor which concerns on Embodiment 1 of this invention. It is a figure explaining the LED array light source arranged in equal pitch of the image sensor which concerns on Embodiment 1 of this invention, Fig.9 (a) is a top view, FIG.9 (b) is a side view. It is a top view of the image sensor LED board which concerns on Embodiment 1 of this invention. It is a wiring diagram of the LED board of the image sensor which concerns on Embodiment 1 of this invention.

Explanation of symbols

1..Subject to be irradiated (banknote) 2..Conveying means (conveying roller) 2a..Feed-side conveying roller 2b..Discharge-side conveying roller 2c.
3a ··· First irradiation unit 3b · · Second irradiation unit 3c · · Third irradiation unit 3d · · Fourth irradiation unit 4 · · Light guide
4a ··· 1st light guide 4b · · 2nd light guide 4c · · 3rd light guide 4d · · · 4th light guide · · · LED array light source 5a · · · first LED array light source
5b .. Second LED array light source 6. Lens array (rod lens array)
7. ・ Sensor (light receiving part) 8. ・ Sensor board 9. ・ Signal processing IC (ASIC)
10..Signal processing board (board) 11..Electronic component 12..Transparent body 13..Case 14..Light guide supporter 15..Screw (board mounting part)
16 .... Holder 17 .... LED board (flexible cable board)
18. ・ External connector 21 ・ ・ Image sensor (CIS)
21a..First image sensor (CIS) 21b..Second image sensor (CIS)
21c ··· Third image sensor (CIS) 21d · · Fourth image sensor (CIS)
40 ··· Light scattering layer 41 ··· Light scattering layer pattern 42 in which the central portion of the irradiation region is island-shaped · · · Light scattering layer pattern in which the central portion of the irradiation region is wide and hollow
50..Ultraviolet (UV) light source 51..Resin coating layer
60 ... LED chip 60a ... Green light source (G light source)
60b · · Infrared (IR) light source 70 · · LED board pattern 70a · · Common electrode pattern (VLED)
70b ... Individual pattern of G light source (C1)
70c ... IR light source individual pattern 70d ... Dummy pattern 80 ... Gap (slit) pattern 90 ... Wire

Claims (9)

One light guide light source having a plurality of optical wavelengths for irradiating light to the irradiation part in the hologram region of the object to be irradiated, and a plurality of light irradiating the irradiation part from an irradiation angle different from the one light guide light source An other light guide light source having an optical wavelength and an irradiation angle region of the other light guide light source, and arranged in an array shape for irradiating the irradiating unit with light through the other light guide light source An LED array light source equipped with an LED chip, a lens array that is reflected by the irradiation unit and converges the reflected light, a light receiving unit that receives light converged by the lens array, and a sensor on which the light receiving unit is mounted A substrate, and a housing for housing or holding the one light guide light source, the other light guide light source, the LED array light source, the lens array, and the sensor substrate, the one light guide light source, The other By selectively lighting control light body light source and the LED array light source, it receives the light irradiated from different angles, an image sensor for detecting the electrical signal of the hologram area of the irradiated member. The image sensor according to claim 1, wherein the arrangement interval of the LED chips of the LED array light sources arranged in an array becomes narrower as it approaches the center of the irradiation area. The image sensor according to claim 1, wherein the transparent resin that covers the LED chips of the LED array light source arranged in an array becomes thicker as it approaches the center of the irradiation region. One light guide light source having a plurality of optical wavelengths for irradiating light to the irradiation part in the hologram region of the irradiated object, and the one light guide provided along the irradiation angle region of the one light guide light source A first LED array light source in which LED chips are mounted in an array for irradiating light to the irradiating unit via a body light source, and a plurality of optics for irradiating the irradiating unit from an irradiation angle different from that of the one light guide light source Another light guide light source having a wavelength, and an LED in an array that is provided along the irradiation angle region of the other light guide light source and irradiates light to the irradiating unit via the other light guide light source A second LED array light source mounted with a chip; a lens array that is reflected by the irradiation unit and converges the reflected light; a light receiving unit that receives the light converged by the lens array; and a sensor on which the light receiving unit is mounted A substrate, One light guide light source, the other light guide light source, the first LED array light source, the second LED array light source, the lens array, and a housing for holding or holding the sensor substrate. By selectively controlling the lighting of the light source, the other light guide light source, the first LED array light source, and the second LED array light source, the light irradiated from different angles is received, and the hologram area of the irradiated object An image sensor that detects electrical signals. 5. The image sensor according to claim 4, wherein the arrangement interval of the LED chips of the first LED array light source and the second LED array light source arranged in an array becomes narrower as it gradually approaches the center of the irradiation region. 5. The image sensor according to claim 4, wherein the transparent resin that covers the LED chips of the first LED array light source and the second LED array light source arranged in an array becomes thicker as it gradually approaches the center of the irradiation region. One light guide light source having a plurality of optical wavelengths for irradiating light to the irradiation section in the hologram region of the object to be irradiated, and having a light scattering layer disposed along the irradiation section, and the one light guide light source The other light guide light source having a plurality of optical wavelengths for irradiating light to the irradiating unit from different irradiation angles and having a light scattering layer installed along the irradiating unit, and the irradiation angle of the other light guide light source An LED array light source that is provided along an area and irradiates light to the irradiating unit via the other light guide light source, and that is reflected by the irradiating unit and converges the reflected light. A lens array, a light receiving portion that receives light converged by the lens array, a sensor substrate on which the light receiving portion is placed, the one light guide light source, the other light guide light source, and the LED array A light source, the lens array and the cell A housing for storing or holding a substrate, and selectively illuminating the one light guide light source, the other light guide light source, and the LED array light source to emit light irradiated from different angles. An image sensor that receives light and detects an electrical signal in the hologram area of the irradiated object. The image sensor according to claim 7, wherein a pattern interval between the light scattering layers of the one light guide light source and the other light guide light source becomes narrower as it approaches the center of the irradiation region. The pattern of the light scattering layer of the one light guide light source and the other light guide light source becomes wider and has a blanking pattern as it gradually approaches the center of the irradiation region. The image sensor described.

Images