Illumination unit

Abstract

To provide an illumination unit arranged in biometric authentication equipment.SOLUTION: An illumination unit includes a body 51, and a reflection plate 60. The body 51 includes: a light source 55 comprising a substrate 52 on which LEDs 56, 57, 58 are surface-mounted; and a power source control part for controlling the light emission of the LEDs 56, 57, 58. The reflection plate 60 is arranged in the vicinity of the body 51, changes the direction of the light emitted from the light source 55, and radiates it toward a person to be authenticated. The light source 55 is arranged on a bottom surface part of biometric authentication equipment 1, and radiates light according to a command of the power source control part. The reflection plate 60 is arranged at a lower part of the body 51 in a flat surface manner or in a curved surface manner, changes the direction of the light emitted from the light source 55, and radiates it toward the person to be authenticated.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lighting unit. [Background technology]

[0002] In general, biometric authentication is a general term for technology that authenticates a person by using physical features such as the face. In recent years, biometric authentication has been introduced as an authentication technology in addition to passwords and PIN numbers.

[0003] Known biometric authentication methods are performed using parts of the body such as fingerprints, veins, face, irises, voice, and bone structure.

[0004] Biometric authentication devices are used as a means of biometric authentication, but when performing biometric authentication using face or iris recognition, for example, problems such as inaccurate biometric authentication judgment can occur depending on the lighting environment around the biometric authentication device. If the brightness illuminating the person to be authenticated is insufficient, biometric authentication judgment such as face recognition or iris recognition cannot be performed accurately. Also, in the case of face recognition, if the lighting is turned up too brightly, the person to be authenticated may squint or close their eyes, resulting in problems such as inaccurate biometric authentication, as well as the problem of the person to be authenticated feeling uncomfortable.

[0005] As a countermeasure when the brightness for illuminating the person to be authenticated is insufficient, a lighting device for illuminating the person to be authenticated is arranged near the biometric authentication device to perform biometric authentication (see, for example, Patent Document 1).

[0006] Furthermore, in order to improve the accuracy of biometric authentication, a biometric authentication device is known in which a lighting device is placed in the device to illuminate the face, etc., of the person to be authenticated, and the brightness of the lighting device is adjusted to illuminate light of an appropriate brightness to perform accurate biometric authentication (see, for example, Patent Document 2).

[0007] However, while both of the above Patent Documents 1 and 2 are equipped with a lighting device that illuminates the person to be authenticated, the structure is complex and the entire biometric authentication device is large, making it inconvenient to carry around and set up at event venues, etc. In addition, for example, in the case of a system (multimodal biometric authentication) that combines face recognition (visible light, etc.) and iris recognition (near-infrared, etc.), there are problems such as the iris recognition being affected by squinting or closing the eyes due to glare, making it impossible to perform accurate biometric authentication. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2009-199392 A [Patent Document 2] Patent No. 6963058 Summary of the Invention [Problem to be solved by the invention]

[0009] Therefore, the present invention provides an illumination unit that can be easily installed in a biometric authentication device, which is provided with an illumination unit that illuminates the face, etc. of the person to be authenticated, and brightly illuminates the face, etc., thereby ensuring biometric authentication, and also reduces the glare of the illumination that illuminates the person to be authenticated by using reflected light emitted from the light source. [Means for solving the problem]

[0010] In order to achieve the above object, the lighting unit of the present invention comprises: A lighting unit arranged in a biometric authentication device, The lamp has a main body and a reflector. The main body has a light source and a power supply control unit that controls the light emission of the light source, The reflector is disposed near the main body and changes the direction of the light emitted from the light source to irradiate the light toward the person to be authenticated. Effect of the Invention

[0011] According to the present invention, a lighting unit is provided that reliably performs biometric authentication such as face authentication and iris authentication using a biometric authentication device, and supports the execution of proper biometric authentication without causing discomfort such as glare to the person being authenticated. [Brief description of the drawings]

[0012] [Figure 1A] FIG. 2 is a schematic perspective view showing a state in which the illumination unit in the first embodiment is attached to the biometric authentication device. [Figure 1B] FIG. 2 is a schematic perspective view showing a state in which the illumination unit in the first embodiment is attached to a biometric authentication device equipped with a stand. [Diagram 2] 1A and 1B are schematic front and side views showing a state in which an illumination unit in a first embodiment is attached to a biometric authentication device. [Diagram 3] 1 is a schematic perspective view of a state in which an illumination unit in a first embodiment is attached to a biometric authentication device, as viewed obliquely from below. [Figure 4] FIG. 2 is a plan view of the lighting unit showing a state in which the LEDs are attached in the first embodiment. [Figure 5A] 11A and 11B are schematic front and side views of a state in which an illumination unit in a second embodiment is attached to a biometric authentication device. [Figure 5B] 13A and 13B are schematic front and side views showing a first modified example of a state in which an illumination unit is attached to a biometric authentication device in a second embodiment. [Figure 5C] 13A and 13B are schematic top and front views showing a second modified example of a state in which an illumination unit is attached to the biometric authentication device according to the second embodiment. [Figure 6A] 13A and 13B are schematic front and side views of a state in which an illumination unit in a third embodiment is attached to a biometric authentication device. [Figure 6B] 13A and 13B are schematic front and side views showing a first modified example of a state in which an illumination unit is attached to a biometric authentication device in a third embodiment. [Figure 6C] 13A and 13B are schematic top and front views showing a second modified example of a state in which an illumination unit is attached to a biometric authentication device in the third embodiment. [Figure 7A] 13A and 13B are schematic front and side views of a state in which an illumination unit in a fourth embodiment is attached to a biometric authentication device. [Figure 7B] 13A and 13B are schematic top and front views showing a first modified example of a state in which an illumination unit is attached to a biometric authentication device in accordance with a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Next, a lighting unit according to an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below shows one specific example of the present invention, and therefore the arrangement, functions, and numerical values ​​of the components described in the embodiment are merely examples, and the scope of the present invention is not limited by these. In addition, in the present invention, a direction horizontal to the ground (floor surface) (e.g., a side direction) is referred to as a side direction, and a direction forming a certain angle with the ground (floor surface) (e.g., a vertical direction) is referred to as an up-down direction. EXAMPLES

[0014] FIG. 1A is a schematic perspective view showing a state in which an illumination unit 50 according to a first embodiment is attached to a biometric authentication device 1. FIG.

[0015] As shown in FIG. 1A, the biometric authentication device 1 has a substantially rectangular parallelepiped shape. The lighting unit 50 is attached to the bottom surface of the biometric authentication device 1. The main body 51 has built-in a board 52 on which LEDs 56, 57, and 58 are mounted, and a power supply control unit (not shown) that controls the light emission of the LEDs (see FIG. 4). The power supply control unit supplies power to the light source 55, and controls the on / off, dimming, and color adjustment of the LEDs 56, 57, and 58 that constitute the light source 55. The light source 55 is provided with a translucent cover (not shown) so as to cover the entire board 52 including the LEDs 56, 57, and 58. The translucent cover is formed of a transparent synthetic resin such as an acrylic resin, but may be colored white or have a surface processed to have an uneven or frosted glass shape. In addition, a rotation axis may be provided near the center of each of the short sides on both sides so that the light source 55 can rotate, thereby rotating the light source 55 and appropriately adjusting the emission direction of the light emitted from the light source.

[0016] The biometric authentication device 1 includes a base 10 including a support 20 and a support member 30, and the support 20 is installed on an upper surface 11 of the base 10. The upper surface 11 of the base 10 functions as a reflective surface that redirects the light emitted from the LEDs 56, 57, and 58 and irradiates it toward the person to be authenticated. The irradiation direction can be adjusted by changing the inclination angle (elevation angle) α (see FIG. 2) of the upper surface 11. The brightness of the light emitted from the LEDs 56, 57, and 58 can be adjusted to a brightness suitable for biometric authentication by changing the brightness. When the upper surface 11 of the base does not function as a reflective surface, a flat reflector or the like can be placed on the upper surface 11.

[0017] FIG. 1B is a schematic perspective view showing a state in which the illumination unit 50 in the first embodiment is attached to the biometric authentication device 1 equipped with the stand 40. FIG.

[0018] 1B, the stand 40 has a substantially rectangular parallelepiped shape, and the top surface thereof is substantially the same shape as the bottom surface of the base 10 of the biometric authentication device 1. The stand 40 is for adjusting the height relative to the person to be authenticated, and is arranged as necessary. Basically, the stand 40 is separable from the base 10, but it may be formed integrally with the base 10.

[0019] FIG. 2 is a schematic front view and a side view showing a state in which the illumination unit 50 in the first embodiment is attached to the biometric authentication device 1. FIG.

[0020] As shown in FIG. 2, the illumination unit 50 is disposed on the bottom surface of the biometric authentication device 1.

[0021] 2, a support member 30 is attached to the rear part of the biometric authentication device 1. The support member 30 is a member for attaching the biometric authentication device 1 to the support 20. The support member 30 is provided with a fixed part 32 fixed to the rear part of the biometric authentication device 1 and a joint part 36 attached to the fixed part 32 at one end, and a ring-shaped part 33 engaged with the support 20 and an arm part 34 connecting the joint part 36 and the ring-shaped part 33 at the other end.

[0022] The fixing part 32 is attached to the back surface of the biometric authentication device 1, and the ring-shaped part 33 at the other end has a ring shape with an O-shaped horizontal cross section. The support pillar 20 standing upright in the vertical direction from the base 10 is fitted into a ring-shaped opening (not shown) of the ring-shaped part 33, thereby engaging with the ring-shaped part 33.

[0023] With the above-mentioned configuration of the support member 30, the biometric authentication device 1 is slid vertically along the support 20 via the ring-shaped portion 33, and the height is adjusted. A fixing member such as a screw (not shown) is provided on the side of the ring-shaped portion 33, and the biometric authentication device 1 is screwed to the support 20 by screwing the screw in the direction of the support 20. Furthermore, by loosening the fixing member, the engagement between the support 20 and the ring-shaped portion 33 is released, and the biometric authentication device 1 becomes slidable vertically, and the height is readjusted.

[0024] Furthermore, a joint portion 36 is provided on the fixed portion 32 of the support member 30. The joint portion 36 is connected to the arm portion 34 and essentially functions as a bearing portion. Thus, by gripping the top surface or the like of the biometric authentication device 1 and pushing or pulling it toward oneself, the biometric authentication device 1 rotates vertically around the joint portion 36, and the position facing the person to be authenticated is changed.

[0025] Base 10 has a substantially rectangular parallelepiped shape and is formed so that front portion 12 is relatively low and rear portion 13 is relatively high. Upper surface 11 of base 10 has an inclination angle (elevation angle) α with respect to the horizontal plane of 0 to 60 degrees, preferably 15 to 45 degrees.

[0026] The upper surface 11 of the base 10 is formed as a reflective surface that changes the direction of light irradiated from the light source and irradiates it toward the person to be authenticated. The upper surface 11 is formed from a white resist layer that has been coated with white resist ink or the like, but it may also be formed from any other material that efficiently reflects the irradiated light, such as an aluminum material that has been attached or coated.

[0027] In the first embodiment, the base 10 has a substantially rectangular parallelepiped shape, but may have any other suitable shape, such as a triangular prism, a truncated pyramid, a cylinder, or a truncated cone.

[0028] FIG. 3 is a schematic perspective view of the illumination unit 50 in the first embodiment attached to the biometric authentication device 1, as viewed obliquely from below.

[0029] 3, the lighting unit 50 has a body 51 having a substantially rectangular parallelepiped shape, and is disposed horizontally along the longitudinal direction of the bottom surface of the biometric authentication device 1. The lighting unit 50 includes a light source 55 that irradiates light emitted from LEDs 56, 57, and 58, and a power cord 59 that supplies power to the lighting unit 50, which is disposed on the side of the body 51.

[0030] The power source supplied to the lighting unit 50 may be the power output from the biometric authentication device 1, or may be a USB cable such as Type-A or Type-B, or a power adapter dedicated to lighting, as long as it supplies a predetermined power to the lighting unit 50. Also, by disposing a power supply circuit such as an AC / DC converter inside the lighting unit 50, it may be possible to input power directly from a commercial power source.

[0031] Furthermore, the lighting unit 50 may be configured to operate without being connected to an external power source by mounting a small battery such as a lithium-ion rechargeable battery or a nickel-metal hydride battery inside the lighting unit 50. Furthermore, dry batteries such as AA alkaline batteries may be used as batteries other than rechargeable batteries.

[0032] When the illumination unit 50 is attached externally, it is fixed by fixing means such as screws to the underside of the biometric authentication device 1. As the fixing means, in addition to screws, adhesive members such as adhesive tape or cling tape, magnetic tape, etc. may be used.

[0033] FIG. 4 is a plan view of the lighting unit showing a state in which the LEDs are attached in the first embodiment.

[0034] As shown in the figure, a plurality of LEDs 56, 57, and 58 are surface-mounted on the surface of a substantially rectangular substrate 52 within a main body 51 of the lighting unit 50. A white resist layer is formed on the surface of the substrate 52 by coating with white resist ink or the like, and a light source 55 is formed to efficiently reflect light emitted from the LEDs 56, 57, and 58 forward.

[0035] On the surface of the substantially rectangular substrate 52, a plurality of LEDs 56, 57, 58 are arranged in a row along the longitudinal direction of the substrate 52. One infrared LED 58 is arranged between two white LEDs 56 located near the center of the row, and one near-infrared LED 57 is arranged outside the two white LEDs 56 located next to the infrared LED 58.

[0036] The LED 56 is a white LED (W-LED) 56 that emits white light, the LED 57 is a near-infrared LED that emits near-infrared light, and the LED 58 is an infrared LED that emits infrared light. The wavelength of the near-infrared light emitted from the near-infrared LED 57 is about 800-900 nm. The wavelength of the infrared light emitted from the infrared LED 58 is about 700-1000 nm. By using the near-infrared LED 57 and the infrared LED 58, in addition to face authentication, it is possible to apply to iris authentication and biometric authentication for the purpose of preventing spoofing, and the accuracy of biometric authentication such as face authentication can be improved and biometric authentication can be performed reliably.

[0037] In the embodiment, an example in which one near-infrared LED 57 and one infrared LED 58 are arranged has been shown, but this is not limiting, and either one of the LEDs 57 and 58 may be arranged, or a plurality of each may be arranged.

[0038] In addition to the white LED 56 that emits visible light, visible light color-emitting LEDs that emit each color, such as a blue LED (B) that emits blue light, a red LED (R) that emits red light, and a green LED (G) that emits green light, may be arranged. In the embodiment, the LEDs 56, 57, and 58 are arranged in a single row, but they may be arranged in multiple rows. Also, a single row and multiple row arrangement may be mixed. EXAMPLES

[0039] FIG. 5A is a schematic front view and a side view showing a state in which an illumination unit 50 is attached to a biometric authentication device 1 in a second embodiment.

[0040] As shown in the figure, an illumination unit 50 is attached to the bottom surface of the biometric authentication device 1, as in the first embodiment. The illumination unit 50 in this embodiment is composed of a main body 51 and a reflector 60 installed along the longitudinal direction of the main body 51. The reflector 60 has a curved cross section, specifically, an approximately 1 / 4 arc shape. The light emitted from the light source 55 constituting the illumination unit 50 is redirected by the reflector 60 toward the face of the person to be authenticated and is irradiated. In this embodiment, the support 20, the support member 30, and the base 10 attached to the biometric authentication device 1 have the same configuration as in the first embodiment, but are omitted here. In this embodiment, the reflector 60 is provided, and it is not necessary to use the base 10 as a reflector, so the base 10 may be a base as in the first embodiment, or a flat plate, etc., as long as it can support the biometric authentication device 1. In addition, the reflector 60 may be formed from a white resist layer that has been coated with white resist ink or the like, or may be formed from a material that efficiently reflects irradiated light, such as an aluminum material that has been attached or coated.

[0041] (Variation 1) FIG. 5B is a schematic front view and a side view showing a first modification of the biometric authentication device 1 according to the second embodiment, to which an illumination unit 50 is attached.

[0042] As shown in the figure, the lighting unit 50 in this modified example 1 is attached to the top surface of the biometric authentication device 1, and a reflector 60 is attached along the longitudinal direction of a main body 51 of the lighting unit 50. The configuration of the lighting unit 50 is the same as that of the embodiment 2. The light emitted from the lighting unit 50 is redirected by the reflector 60 and irradiated in the direction of the face of the person to be authenticated.

[0043] (Variation 2) FIG. 5C is a schematic top view and a front view showing Modification 2 in a state where the illumination unit 50 is attached to the biometric authentication device 1 in the second embodiment.

[0044] As shown in the figure, in this modified example 2, lighting units 50 are arranged vertically on both sides of the biometric authentication device 1, and a reflector 60 is attached to one end of each side. The light emitted from the lighting units 50 attached to both sides of the biometric authentication device 1 is redirected by the reflector 60 toward the face of the person to be authenticated. As in the above-mentioned embodiment 2, the two reflectors 60 have a curved cross section along the longitudinal direction of the lighting unit 50, specifically, a substantially quarter-circular arc shape. EXAMPLES

[0045] FIG. 6A is a schematic front view and a side view of a state in which an illumination unit 50 in the third embodiment is attached to a biometric authentication device 1. FIG.

[0046] As shown in the figure, the biometric authentication device 1 has the same configuration as that of the second embodiment, except that the reflector 61 is flat. An illumination unit 50 and a flat reflector 61 are attached to the bottom surface of the biometric authentication device 1. The light emitted from the illumination unit 50 is redirected by the reflector 61 toward the face of the person to be authenticated.

[0047] (Variation 1) FIG. 6B is a schematic front view and a side view showing a first modification of the biometric authentication device 1 according to the third embodiment, to which an illumination unit 50 is attached.

[0048] As shown in the figure, the biometric authentication device 1 has the same configuration as the modified example 1 of the embodiment 2, except that the reflector 61 is flat. An illumination unit 50 and a flat reflector 61 are provided on the top surface of the biometric authentication device 1. The illumination unit 50 has the same configuration as the embodiment 3. The light emitted from the illumination unit 50 is redirected by the reflector 61 toward the face of the person to be authenticated.

[0049] (Variation 2) FIG. 6C is a schematic top view and a front view showing Modification 2 in a state where the illumination unit 50 is attached to the biometric authentication device 1 in the third embodiment.

[0050] As shown in the figure, the biometric authentication device 1 has the same configuration as the modified example 2 of the second embodiment, except that the reflector 61 is flat. An illumination unit 50 is disposed vertically on each side of the biometric authentication device 1, and a reflector 61 is attached to one end of each side. The light emitted from the illumination unit 50 is redirected by the reflector 61 and emitted toward the face of the person to be authenticated.

[0051] As shown in the third embodiment, the lighting unit 50 uses a flat reflector 61, which softens the light of the LEDs emitted from the light source 55 and illuminates the person to be authenticated with an appropriate light distribution. The person to be authenticated does not feel discomfort due to the glare of the irradiated light, and can receive appropriate biometric authentication by the biometric authentication device. EXAMPLES

[0052] FIG. 7A is a schematic front view and a side view of the illumination unit 50 attached to the biometric authentication device 1 in the fourth embodiment.

[0053] As shown in the figure, the lighting unit 50 in the fourth embodiment is disposed on the upper surface of the biometric authentication device 1, and a reflector 62 is disposed above the lighting unit 50 along the longitudinal direction of the lighting unit 50. The configurations of the biometric authentication device 1 and the lighting unit 50 are the same as those of the first to third embodiments. The light irradiated from the lighting unit 50 is redirected by the reflector 62 toward the face of the person to be authenticated and irradiated. The reflector 62 is disposed at a position away from the biometric authentication device 1, and reflects the light irradiated from the lighting unit 50 toward the face of the person to be authenticated. For example, an existing flat surface such as a ceiling surface or a wall surface may be used as the reflector 62, or a white or silver plate attached to a tripod or a white flat plate placed on a wall in a room may be used as the reflector 62.

[0054] (Variation 1) FIG. 7B is a schematic right side view and a front view showing Modification 1 in a state where the illumination unit 50 is attached to the biometric authentication device 1 in the fourth embodiment.

[0055] As shown in the figure, the lighting unit 50 in the first modification is attached to the side of the biometric authentication device 1, and a reflector 62 is arranged on the right side of the lighting unit 50 along the longitudinal direction (up-down direction) of the lighting unit 50. The configurations of the biometric authentication device 1 and the lighting unit 50 are the same as those of the first to fourth embodiments. The light irradiated from the lighting unit 50 is redirected by the reflector 62 and irradiated toward the face of the person to be authenticated. As in the fourth embodiment, the reflector 62 is arranged at a position away from the biometric authentication device 1, and it is sufficient that the reflector 62 reflects the light irradiated from the lighting unit 50 toward the face of the person to be authenticated.

[0056] In addition, in the first to fourth embodiments, the lighting unit 50 is disposed externally to the outside of the biometric authentication device 1, but this is not limited thereto, and the lighting unit 50 may be disposed integrally within the housing of the biometric authentication device 1.

[0057] In the present invention, the lighting unit 50 used in the biometric authentication device 1 uses a reflector 60 to soften the LED light emitted from the light source 55 and to illuminate the person to be authenticated with an appropriate light distribution, thereby enabling proper biometric authentication to be performed without causing discomfort to the person to be authenticated due to the glare of the illuminated light.

[0058] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. [Industrial Applicability]

[0059] According to the present invention, a lighting unit is provided that reliably performs biometric authentication such as face authentication and iris authentication using a biometric authentication device, and supports the proper performance of biometric authentication without causing discomfort such as glare to the person being authenticated. [Explanation of symbols]

[0060] 1 Biometric authentication devices 10 Pedestal 11 Top part 12 Front section 13 Back part 20 pillars 30 Support member 32 Fixed part 33 Ring-shaped part 34 Arm section 36 Joint 40 Stand 50 Lighting Units 51 Main unit 52 Substrate 55 Light source 56 White LED 57 Near-infrared LED 58 Infrared LED 59 Power cord 60,61,62 Reflector α Tilt angle (elevation angle)

Claims

1. A lighting unit arranged in a biometric authentication device, The lamp has a main body and a reflector. The main body has a light source and a power supply control unit that controls the light emission of the light source, The illumination unit is characterized in that the reflector is disposed near the main body, and changes the direction of light emitted from the light source to irradiate the light toward a person to be authenticated.

2. The main body is disposed on a bottom surface of the biometric authentication device, and emits light in response to a command from the power supply control unit. The lighting unit according to claim 1 , wherein the reflector is arranged in a flat or curved shape on the lower part of the main body, and changes the direction of the light emitted from the light source and irradiates it toward the person to be authenticated.

3. The main body is disposed on an upper surface of the biometric authentication device, and emits light in response to a command from the power supply control unit. The lighting unit according to claim 1 , wherein the reflector is arranged on the upper part of the main body in a flat or curved shape, and changes the direction of the light emitted from the light source and irradiates it toward the person to be authenticated.

4. The main body is disposed on one or both sides of the biometric authentication device, and irradiates light emitted from the light source in a lateral direction; The lighting unit according to claim 1, wherein the reflector is arranged in a flat or curved shape on one or both sides of the main body, and changes the direction of light emitted from the light source and irradiates it toward the person to be authenticated.

5. 2. The lighting unit according to claim 1, wherein the light source is a substrate on which LEDs are surface-mounted in a row, the LEDs being at least one of a white LED, a near-infrared LED, and an infrared LED.

6. Further, the device has a base, The base includes a support and a support member. The support is disposed on an upper surface of the base, 2. The lighting unit according to claim 1, wherein the support member has a joint portion at one end that is fixed to a rear portion of the biometric authentication device, a ring-shaped portion at the other end that is engaged with the support, and an arm portion that connects the joint portion and the ring-shaped portion.

7. the joint portion has a bearing portion and adjusts the angle of the biometric authentication device in the vertical direction; The lighting unit according to claim 6 , wherein the ring-shaped portion slides up and down on the support rod to adjust the height of the biometric authentication device.

8. The main body is disposed on a bottom surface of the biometric authentication device, an upper surface portion of the base is a reflective surface that changes the direction of the light emitted from the light source and irradiates the light toward the person to be authenticated, 7. The lighting unit according to claim 6, wherein the inclination angle α of the reflecting surface is within a range of 0-60 degrees.

9. A biometric authentication device comprising the lighting unit according to any one of claims 1 to 8.

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