KR20080072205A - Image sensor module and mobile terminal having the same - Google Patents

Image sensor module and mobile terminal having the same Download PDF

Info

Publication number
KR20080072205A
KR20080072205A KR1020070010636A KR20070010636A KR20080072205A KR 20080072205 A KR20080072205 A KR 20080072205A KR 1020070010636 A KR1020070010636 A KR 1020070010636A KR 20070010636 A KR20070010636 A KR 20070010636A KR 20080072205 A KR20080072205 A KR 20080072205A
Authority
KR
South Korea
Prior art keywords
light
optical waveguide
image sensor
light emitting
portion
Prior art date
Application number
KR1020070010636A
Other languages
Korean (ko)
Inventor
정헌준
Original Assignee
엠텍비젼 주식회사
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 엠텍비젼 주식회사 filed Critical 엠텍비젼 주식회사
Priority to KR1020070010636A priority Critical patent/KR20080072205A/en
Publication of KR20080072205A publication Critical patent/KR20080072205A/en

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/02Constructional features of telephone sets
    • H04M1/23Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H04M1/233Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof including a pointing device, e.g. roller key, track ball, rocker switch or joystick
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2250/00Details of telephonic subscriber devices
    • H04M2250/66Details of telephonic subscriber devices user interface aspects for indicating selection options for a communication line

Abstract

And a light emitting portion for generating light of a predetermined wavelength, and an optical waveguide portion for allowing light emitted from the light emitting portion to be incident and exit uniformly in a predetermined direction, wherein the optical waveguide portion has a through portion. The image sensor module includes an image sensor that detects the movement of the subject by receiving light passing through the penetrating portion after being reflected from the optical waveguide and obtaining a clearer image of the subject while consuming less power. can do.

Description

IMAGE SENSOR MODULE AND MOBILE TERMINAL HAVING THE SAME}

1 is a perspective view of an image sensor module according to an embodiment of the present invention.

2 is a cross-sectional view of the image sensor module according to an embodiment of the present invention.

Figure 3 is a bottom view of the optical waveguide according to an embodiment of the present invention.

4 is a cross-sectional view of an image sensor module according to another embodiment of the present invention.

5 is a perspective view of an optical waveguide according to another embodiment of the present invention.

6 is a perspective view of a mobile terminal having an image sensor module according to an embodiment of the present invention.

<Description of Drawing>

100: image sensor module 110: light emitting unit

130: light guide 150: guide

170: image sensor 190: light emitting unit

210: printed circuit board 230: subject

300: mobile terminal 310: display unit

330: main body

The present invention relates to an image sensor module and a portable terminal having the same.

In recent years, electronic devices using buttons as a means for inputting information have become mainstream. In other words, a dome button corresponding to each button is provided under the button, and when a button is pressed, the dome button operates to input information.

However, such a dome button is not only bulky, but also inconvenient to use. To solve this problem, an apparatus for inputting information by recognizing a movement of a subject such as a human finger through image processing has been developed. However, the input device using the image processing uses a plurality of light emitting diodes (LEDs) as a light emitting device, which not only consumes a large amount of power but also emits light uniformly to a subject because light emitting diodes are arranged at predetermined intervals. It was difficult to get an accurate image of the subject.

The present invention provides an image sensor module capable of irradiating light uniformly to a subject and a portable terminal having the same.

The present invention provides an image sensor module that can reduce power consumption and a portable terminal having the same.

The present invention provides an image sensor module capable of obtaining a high quality image signal by uniformly irradiating light onto a subject and a portable terminal having the same.

An image sensor module according to an aspect of the present invention includes a light emitting part for generating light of a predetermined wavelength, and an optical waveguide part for allowing light from the light emitting part to be incident and exit uniformly in a predetermined direction, and the optical waveguide part penetrates A part is provided. The image sensor module includes an image sensor that detects the movement of the subject by receiving the light passing through the penetrating portion after being reflected from the optical waveguide.

Embodiments of the image sensor module according to the present invention may have one or more of the following features. For example, the light emitting part may be a light emitting diode, and the optical waveguide part has an incidence part formed at a lower surface thereof to receive light from the light emitting part, and an outlet part formed at an upper surface thereof and exiting light emitted from the incidence part to be emitted. Only by wealth can light be emitted.

In addition, a plurality of incidence portions may be formed on a bottom surface of the optical waveguide portion, and the optical waveguide portion is formed at a side thereof and includes an incidence portion for receiving light from the light emitting portion, and an outlet portion formed at an upper surface thereof to emit light entering through the incidence portion You may. In addition, the outlet portion may be formed in a ring shape, and a guide portion is formed between the optical waveguide portion and the light emitting portion so that all the light emitted from the light emitting portion may enter the optical waveguide portion.

The guide portion may be formed of a metal adhesive, or may have a hollow cylindrical shape, and a total reflection material may be formed on a main surface thereof. A light transmitting part may be formed on an upper surface of the optical waveguide part, the light emitting part may generate infrared rays, and the through hole may be filled with an infrared light passing material through which infrared light may pass.

The light emitting part may generate infrared rays, and an infrared film may be attached to the light transmitting part, the light guide part may have a square shape, and a penetrating part may be formed at the center thereof. The optical waveguide may be formed of a polymer material.

According to an aspect of the present invention, there is provided a portable terminal including a display unit and a main body unit, a light emitting unit for generating light having a predetermined wavelength, and an optical waveguide unit for allowing light emitted from the light emitting unit to be incident and exit uniformly in a predetermined direction. The optical waveguide includes a penetrating portion, and an image sensor module that receives the light passing through the penetrating portion after being reflected from the optical waveguide, recognizes the movement of the subject, and displays the movement on the display.

Hereinafter, an embodiment of an image sensor module and a portable terminal having the same according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components have the same reference numerals. And duplicate description thereof will be omitted.

1 is a perspective view illustrating a state in which an image sensor module 100 is separated according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the image sensor module 100. For reference, the guide part 150 is omitted in FIG. 1 for convenience.

1 to 2, the image sensor module 100 according to an embodiment of the present invention includes a plurality of light emitting units 190 generating light and a light emitting unit located on the light emitting unit 190. The optical waveguide unit 130 allows the light emitted from the light source 190 to be uniformly irradiated onto the subject 230, and receives the light reflected from the subject 230 to grasp the movement of the subject 230 through image processing. It includes an image sensor 170. And the image sensor module 100 according to an embodiment of the present invention includes a light transmitting unit 110, after passing through the light transmitting unit 110, the light emitted through the light guide 130 is reflected on the subject 230 The light is incident on the image sensor 170 through the light transmitting unit 110 again.

The optical waveguide 130 according to the present embodiment uniformly irradiates the light emitted from the light emitting unit 190 disposed at regular intervals over the entire outlet portion 133 as shown in FIG. 1 through total internal reflection. Can be. Accordingly, when the light emitters 190 are disposed at regular intervals, when the subject 230 is positioned between the light emitters 190, the sharpness of the captured image of the subject 230 is relatively decreased. ) Solves this problem. Therefore, since the image sensor module 100 according to the present exemplary embodiment may irradiate light uniformly to the subject 230, the image sensor module 100 may acquire a clearer image of the subject 230. In addition, since the light emitted from the light emitting unit 190 enters the optical waveguide unit 130 by the light guide unit 150, the image sensor module 100 according to the present embodiment not only prevents the loss of light but also the light emitting unit ( 190 may be reduced and power efficiency may be increased.

As shown in FIGS. 1 to 3, the optical waveguide 130 has a ring shape in which a through part 131 is formed at the center thereof. In addition, an incidence part 135 that receives light from the light emitting part 190 is formed at a bottom surface of the optical waveguide part 130 to correspond to the position of the light emitting part 190. Therefore, light entering the inside of the optical waveguide 130 through the incident part 135 is emitted through the outlet 133 of the optical waveguide 130 through total reflection. And since the remaining portion of the optical waveguide 130 except for the incidence 135 and the outlet 133 is coated so that light is not allowed to enter and exit, the light wave 130 enters the inside of the optical waveguide 130 through the incidence 135. All of the light goes out through the outlet 133.

As the material for forming the optical waveguide 130, inorganic materials such as quartz glass or multi-component glass, which have a light transmission loss and a wide transmission band, may be used, or polymer materials having excellent processability and cost compared to inorganic materials may be used. have. The optical waveguide 130 forms a core (not shown) using a polymer material having excellent transparency, such as polymethyl methacrylate (PMMA) or polyester, as a polymer material, and has a refractive index higher than that of the core. A core clad structure in which a clad (not shown) is formed of a low polymer may be provided. In addition, the core of the optical waveguide 130 has a polyimide, a polyetherimide, a polyesterimide, a polysulfoneimide or a polyamideimide as a basic structure for light loss. Can be reduced.

The through part 131 formed at the center of the optical waveguide 130 has a predetermined diameter, and as shown in FIG. 2, light reflected from the subject 230 may be incident to the image sensor 170. Provide passage. The diameter of the through part 131 is determined by the size and performance of the image sensor 170, the size of the light emitting part 190, and the like, and may be larger than the diameter of the lens of the image sensor 170 (not shown). have.

In addition, the penetrating part 131 may be provided with a filter through which only light having a specific wavelength may pass, and the light emitting unit 190 may irradiate light having the specific wavelength. This allows light outside of certain wavelengths to be filtered to block light at other wavelengths that may act as noise. Herein, light having a specific wavelength may be a wavelength having a relatively small proportion of infrared light in the sunlight, such as 900 to 980 nm, 1080 to 1180 nm, 1325 to 1425 nm, and 1800 to 2000 nm.

An outlet 133, which is a passage through which light entering the optical waveguide 130 flows out, may be formed on the entire upper surface of the optical waveguide 130. Therefore, the light introduced through the incident part 135 formed on the bottom surface of the optical waveguide 130 is totally reflected inside the optical waveguide 130 and is uniformly irradiated to the outside through the entire outlet portion 133. Therefore, light is uniformly radiated to all parts of the outlet portion 133. In the present embodiment, the outlet portion 133 has a ring shape, but the shape thereof is not limited thereto, and may be variously changed, such as a square or an ellipse, and the rectangular or elliptical outlet 133 may have an optical waveguide 130. May be patterned on the upper surface of the In addition, the remaining portion of the optical waveguide 130 except for the incidence part 135 and the outlet part 135 may be coated with a thin metal foil to allow light to go out only in a desired direction.

As shown in FIG. 3, the incident portions 135 are arranged in the circumferential direction at regular intervals along the bottom circumference of the optical waveguide 135. The incident part 135 has a groove shape for accommodating the light emitting part 190, and allows the light emitted from the light emitting part 190 to flow into the light guiding part 135. The size, position, and number of the incident parts 135 correspond to those of the light emitting part 190. For example, when there is one light emitting part 190, one incident part 135 may be formed.

The incident part 135 may be formed on the surface of the optical waveguide 130 by etching or laser processing, and may be formed by a micro electro-mechanical system (MEMS). In addition, the incident part 135 may be formed not only on the bottom surface of the optical waveguide 130 but also on its side surface as shown in FIG. 4, which is possible by changing the refractive indices of the core and the clad in the optical waveguide 130. .

When the optical waveguide 130 is formed of a polymer material, the optical waveguide 130 generally has a thickness of about 0.05 mm to 3 mm, and thus does not significantly increase the thickness of the image sensor module 100.

The transmissive part 110 is positioned on the optical waveguide 130 and is made of a material through which light can pass. Therefore, the light emitted through the outlet 133 of the optical waveguide 130 is reflected out of the subject 230 after exiting through the light-transmitting unit 110 to the image sensor 170 through the light-transmitting unit 110 again. Incident. In FIG. 2, although a predetermined gap is formed between the light transmitting part 110 and the optical waveguide part 130, the gap between the light transmitting part 110 and the optical waveguide part 130 may be removed, and the light transmitting part 110 may be removed and the luminous intensity may be removed. Only the wave unit 130 may be used.

The light emitting unit 190 is mounted on the printed circuit board 210 to generate light. The light emitting unit 190 may be a light emitting diode or an organic light emitting diode (OLED). In the case where the member or material passing only light having a specific wavelength is formed in the penetrating portion 131 of the optical waveguide 130, the light emitting unit 190 may use a light emitting diode or an organic light emitting device that generates only light having the wavelength. Can be. In FIG. 1, four light emitting diodes are arranged in the circumferential direction at equal intervals on the printed circuit board 210, but the number of arrangement of the light emitting units 190 may be variously changed as necessary.

Light emitted from the light emitting unit 190 is incident to the incident unit 135 along the guide unit 150. As shown in FIG. 2, the guide part 150 has a hollow cylindrical shape in which both ends are open, and a material capable of reflecting light is coated or coated on the inner circumferential surface 151. Therefore, all the light emitted from the light emitting unit 190 may enter the incident unit 135 without flowing out.

In addition, the guide part 150 for guiding the light from the light emitting part 190 may seal the gap between the light emitting part 190 and the incident part 135 by using a material that discharges or totally reflects a metal adhesive around the light emitting part 190. It may be formed by.

1 and 3, a plurality of light emitting units 190 may be used. However, light efficiency may be increased by using the optical waveguide unit 130 to use one or two light emitting units 190. This can reduce the power consumption of the image sensor module.

The image sensor 170 may be a complementary metal oxide semiconductor (CMOS) image sensor or a charge coupled device (CCD) image sensor. A complementary metal oxide semiconductor (CMOS) image sensor is composed of a plurality of unit pixels including a photo diode, and a signal output from the sensor is a digital electrical signal, which is driven by a control circuit and signal processing. do. A charge coupled device (CCD) image sensor includes a plurality of MOS capacitors, and is operated by outputting an analog electric signal by moving charges (carriers) to the MOS capacitors.

The image sensor 170 receives light reflected from the subject 230 at regular intervals or continuously, analyzes the subject image for each time point, and recognizes a change in the subject image. As a method of analyzing an image of a subject, for example, a plurality of different subject images obtained by capturing the subject 230 at a predetermined time interval may be compared to extract a center point of the subject image to detect movement of the subject 230. Alternatively, a method of detecting the movement of the subject 140 by extracting an outline of one end of the subject 230 from a frame having different clarity by adjusting the sharpness of the subject image generated by capturing the subject 230.

The image sensor 170 detects the movement of the subject 230 and then moves the pointer 311 to the display 310 of the portable terminal (see FIG. 6) in response to the movement of the subject 230. Although the image sensor 170 is integrally formed with a sensor for receiving light reflected from the subject 230 and an image processing device for image processing the image received by the sensor, the image sensor 170 may be formed as a separate chip. .

4 is a cross-sectional view of an image sensor module according to another exemplary embodiment of the present invention. The image sensor module illustrated in FIG. 4 includes an optical waveguide 250 having an incident part 255 formed on a side surface thereof.

The incidence part 255 formed on the outer circumferential surface of the optical waveguide 250 is provided with a light emitting unit 190. Light emitted from the light emitting unit 190 is discharged through total reflection inside the optical waveguide 250. Through 253). Light emitted from the optical waveguide 250 is uniformly irradiated over the entire surface of the outlet portion 253. Since the through part 251 is formed at the center of the optical waveguide 250, the light reflected by the subject passes through the through part 251 and then enters the image sensor 170.

5 is a perspective view of an optical waveguide 270 according to another embodiment of the present invention.

The optical waveguide 270 illustrated in FIG. 5 has a rectangular shape as a whole, and a circular through part 271 is formed at the center thereof. A ring-shaped outlet portion 273 is formed at an upper portion of the optical waveguide 270, and portions other than the outlet portion 273 are coated to prevent light from flowing out.

6 is a perspective view of a portable terminal according to an embodiment of the present invention.

Referring to FIG. 6, a portable terminal 300 according to an embodiment of the present invention has a display in which a main body unit 330 and a main body unit 330 on which the image sensor module is mounted are hinged. The unit 310 is provided. In addition, the display 310 displays the movement of the subject detected by the image sensor module through the pointer 311. Therefore, when the user moves the finger or the like on the light emitting unit 110 of the image sensor module while holding the portable terminal 300, the image sensor module detects the movement of the finger and moves the pointer on the display unit 310. Let's do it.

Although the embodiments of the present invention have been described above, various changes and modifications of the present invention should also be construed as falling within the scope of the present invention as long as the technical idea of the present invention is implemented.

The present invention can provide an image sensor module that can irradiate light uniformly to a subject and a portable terminal having the same.

The present invention can provide an image sensor module that can reduce power consumption and a portable terminal having the same.

The present invention can provide an image sensor module capable of obtaining a high quality image signal by uniformly irradiating light onto a subject and a portable terminal having the same.

Claims (15)

  1. A light emitting unit generating light having a predetermined wavelength;
    An optical waveguide for allowing light emitted from the light emitting portion to be incident and exit uniformly in a predetermined direction, the optical waveguide having a through portion;
    And an image sensor that exits the optical waveguide and is reflected by a subject to receive light passing through the penetrating portion to recognize movement of the subject.
  2. The method of claim 1,
    The light emitting unit is an image sensor module, characterized in that the light emitting diode.
  3. The method of claim 1,
    The optical waveguide includes an incidence portion formed at a lower surface thereof to receive light from the light emitting portion, and an outlet portion formed at an upper surface thereof and emitting light emitted from the incidence portion, and light is emitted only to the outlet portion. Image sensor module.
  4. The method of claim 3,
    And a plurality of incidence portions are formed on a bottom surface of the optical waveguide.
  5. The method of claim 1,
    The optical waveguide part includes an incident part formed at a side thereof to receive light from the light emitting part, and an outlet part formed at an upper surface of the light guide part to emit light emitted through the incident part.
  6. The method according to any one of claims 3 to 5,
    And the outlet portion has a ring shape.
  7. The method of claim 1,
    An image sensor module, characterized in that the guide portion is formed between the optical waveguide and the light emitting portion so that all the light from the light emitting portion enters the optical waveguide.
  8. The method of claim 7, wherein
    The guide unit is an image sensor module, characterized in that formed by a metal adhesive.
  9. The method of claim 7, wherein
    The guide unit has a hollow cylindrical shape, the inner circumferential surface of the image sensor module, characterized in that the total reflection material is formed.
  10. The method of claim 1,
    An image sensor module, characterized in that the light transmitting portion is formed on the upper surface of the optical waveguide.
  11. The method of claim 1,
    The light emitting unit generates infrared rays,
    The through hole is filled with an infrared ray passing material that can pass through the infrared image sensor module.
  12. The method of claim 10,
    The light emitting unit generates infrared rays,
    An image sensor module, characterized in that the infrared film is attached to the light transmitting portion.
  13. The method of claim 1,
    The optical waveguide part has a square shape, and the through part is formed at the center of the image sensor module.
  14. The method of claim 1,
    The optical waveguide part is formed by a polymer material.
  15. A portable terminal comprising a display unit and a main body unit,
    A light emitting unit generating light having a predetermined wavelength;
    An optical waveguide for allowing light emitted from the light emitting portion to be incident and exit uniformly in a predetermined direction, the optical waveguide having a through portion;
    And an image sensor module that receives the light passing through the penetrating part after exiting from the optical waveguide and is reflected on the subject to recognize the movement of the subject and display the image on the display unit.
KR1020070010636A 2007-02-01 2007-02-01 Image sensor module and mobile terminal having the same KR20080072205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070010636A KR20080072205A (en) 2007-02-01 2007-02-01 Image sensor module and mobile terminal having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070010636A KR20080072205A (en) 2007-02-01 2007-02-01 Image sensor module and mobile terminal having the same

Publications (1)

Publication Number Publication Date
KR20080072205A true KR20080072205A (en) 2008-08-06

Family

ID=39882573

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070010636A KR20080072205A (en) 2007-02-01 2007-02-01 Image sensor module and mobile terminal having the same

Country Status (1)

Country Link
KR (1) KR20080072205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8538090B2 (en) 2009-03-03 2013-09-17 Hyundai Motor Japan R&D Center, Inc. Device for manipulating vehicle built-in devices
KR101324627B1 (en) * 2012-03-05 2013-11-01 (주)에이디테크놀로지 The Sensor Module Detecting Target over 3-Dimension
KR101504148B1 (en) * 2013-07-12 2015-03-19 주식회사 루멘스 Non-contact operating apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8538090B2 (en) 2009-03-03 2013-09-17 Hyundai Motor Japan R&D Center, Inc. Device for manipulating vehicle built-in devices
KR101324627B1 (en) * 2012-03-05 2013-11-01 (주)에이디테크놀로지 The Sensor Module Detecting Target over 3-Dimension
KR101504148B1 (en) * 2013-07-12 2015-03-19 주식회사 루멘스 Non-contact operating apparatus

Similar Documents

Publication Publication Date Title
TWI612647B (en) Optoelectric sensor
EP2659282B1 (en) Opto-electronic module and devices comprising the same
WO2018153070A1 (en) Optical fingerprint recognition apparatus and display panel
JP2017527045A (en) Image acquisition device, terminal device, and image acquisition method
US20180357459A1 (en) Optical fingerprint module
JP5639174B2 (en) Integrated visual and display system
KR20150024530A (en) Electronic device for sensing proximity touch and controlling method thereof
KR100849918B1 (en) Image capturing apparatus
KR100853163B1 (en) Image capturing apparatus
US6829375B1 (en) Fingerprint input apparatus
US8204284B2 (en) Fingerprint identifying system using a set of microstructure layers formed on one of top and bottom faces of light-transmissive finger press plate
US9773765B2 (en) Compact optoelectronic modules
KR100864272B1 (en) Light guide member, illumination apparatus, and image capturing apparatus using the same
US20200049555A1 (en) Spectrometry system with visible aiming beam
EP1830304B1 (en) Contactless image capturing apparatus
KR100919041B1 (en) Image capturing apparatus having distance measurement function
US8743088B2 (en) Pointing device comprising a light control part and electronic apparatus comprising an input device
EP2747413A1 (en) Handheld magnification device with a two-camera module
TWI232998B (en) Illuminating apparatus and image reading apparatus
CN105989325A (en) Fingerprint palm print image collector of honeycomb structure and terminal device
US7068448B2 (en) Optical lens and lens system
US7798405B2 (en) Optical imaging device for the recognition of finger prints
CN108292361A (en) The integrated optical fingerprint sensor of the display of reflector is limited with angle
JP2012528358A (en) Fabrication of optical elements with cladding
US9330290B2 (en) Barcode reader having multiple illumination systems and multiple sets of imaging optics

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application