KR20110081566A - Optical joystick module and mobile terminal having it - Google Patents

Optical joystick module and mobile terminal having it Download PDF

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Publication number
KR20110081566A
KR20110081566A KR1020100001786A KR20100001786A KR20110081566A KR 20110081566 A KR20110081566 A KR 20110081566A KR 1020100001786 A KR1020100001786 A KR 1020100001786A KR 20100001786 A KR20100001786 A KR 20100001786A KR 20110081566 A KR20110081566 A KR 20110081566A
Authority
KR
South Korea
Prior art keywords
housing
light
circuit board
printed circuit
optical joystick
Prior art date
Application number
KR1020100001786A
Other languages
Korean (ko)
Inventor
안건준
Original Assignee
크루셜텍 (주)
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 크루셜텍 (주) filed Critical 크루셜텍 (주)
Priority to KR1020100001786A priority Critical patent/KR20110081566A/en
Publication of KR20110081566A publication Critical patent/KR20110081566A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0916—Adapting the beam shape of a semiconductor light source such as a laser diode or an LED, e.g. for efficiently coupling into optical fibers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • Position Input By Displaying (AREA)

Abstract

PURPOSE: An optical joystick module and a portable terminal having the same are provided to select an icon while conveniently moving a cursor. CONSTITUTION: A housing(40) is fixed to a PCB(Printed Circuit Board)(30). A subject is touched with the housing. A light source(50) is received inside of the housing and lights the housing. An imaging member(60) is accepted inside of the housing. A light receiving sensor(70) is installed in the PCB and receives the light picked up through the imaging member. A reflection pad is coupled with the housing and has a reflection pattern. A lighting member is installed in the PCB and lights the reflection member.

Description

OPTICAL JOYSTICK MODULE AND MOBILE TERMINAL HAVING IT}

The present invention relates to an optical joystick that increases the display effect of the entire portable terminal as well as the aesthetics of the module itself through the lighting effect.

In general, a terminal of an electronic device such as a mobile terminal or a personal digital assistant (PDA) adopts a user interface using a keypad.

In more detail, a terminal such as a mobile phone or a PDA includes a keypad formed with a plurality of buttons for inputting numbers, letters, or symbols, and a user presses a button of the keypad to store desired data such as numbers or words. Menus can be selected by typing on the instrument or by pressing a button cursor and selector.

The terminal of the electronic device includes a display unit to display data input by the user through the keypad and related information.

In recent years, wireless Internet services such as WIBRO (Wireless Broadband) and wireless mobile communication services have been commercialized to support communication services or Internet services using electronic devices.Graphical User Interfaces (GUIs) are used in mobile electronic devices such as mobile phones and PDAs. Windows operating systems, such as Windows CE, are being adopted to support this.

In addition, with the development of communication technology, portable electronic devices provide various additional services to users, and the GUI-based Windows operating system makes it easy to provide additional services by portable electronic devices.

A user interface for more convenient use of a general electronic device is a pointing device such as a mouse, a touchpad, a joystick, etc. Recently, a pointer such as a cursor is detected by detecting an optical signal that changes according to the movement of a finger, which is a subject. Optical joysticks that move or receive information and / or commands desired by the user have been developed and applied to electronic devices.

1 and 2, a general optical joystick 10 may include a light source 11, a cover 12, an image sensor 15 that senses an optical signal, and an imaging system that guides light to the image sensor 15. 14, and a holder 13 for receiving components such as an illumination guide, an imaging system 14, and a light source.

The optical joystick 10 may be provided separately from the electronic device 1 and may be connected by wire or wirelessly. In recent years, the optical joystick 10 may be directly mounted on the main body 2 of the electronic device such as a notebook or a mobile phone.

The outer surface (upper surface) of the cover is provided with an operation surface for contacting the subject P, such as a finger, for operation of the electronic device, the image sensor 15 is a PCB (unsigned) for processing the input optical signal Is provided.

Accordingly, when the finger, which is the subject P, is moved to the operation surface, the optical signal input to the image sensor 15 changes according to the movement of the finger, and thus the electronic device may be manipulated according to the movement of the finger.

In more detail, in the state where the subject P is not in contact with the upper side and the operation surface of the cover 12, the light emitted from the light source 11 passes through the cover 12 through the lighting guide and passes through the cover 12. ) Is released to the outside.

On the other hand, when a subject such as a finger contacts the upper side of the cover 12, the light emitted from the light source 11 hits the subject P, is reflected, and then enters the image sensor 15 through the imaging system 14. Thus, the image of the subject is picked up with an optical signal.

Here, the imaging system 14 includes a plurality of components, such as a prism 14a and a lens 14b made of a material such as glass or optical plastic, and condenses the light reflected by the subject in a predetermined direction and at the same time to condense the image. When transmitted to the sensor 15 and the subject outside the cover 12 is moved, the optical signal reflected by the subject 12 and sensed by the image sensor 15 is also changed.

The image sensor 15 detects a change in the optical signal due to the movement of the subject, and accordingly, the movement of the cursor or the pointer is displayed on the display unit 3 of the electronic device 1.

The detection method of the optical signal by the image sensor 15 and the control method of the image are similar to those of the optical mouse mounted in the notebook computer, and thus detailed description thereof is omitted.

Since the above-described general optical joystick operates a portable electronic device by moving a cursor, that is, a pointer according to a movement of a subject, it is possible to implement a convenient operation as compared to a method of operating a portable electronic device by moving a cursor by a conventional keypad button. There is.

However, the conventional optical joystick installed in the portable terminal can provide an advantage that the user can select an icon while moving the cursor conveniently by creating a cursor on the display screen, but the optical joystick itself expects a display effect to which the aesthetics are applied. Difficult to do

That is, the optical joystick mounted in the conventional portable terminal is difficult to improve or increase the aesthetics of the entire portable terminal due to the structural characteristics for generating and moving the cursor on the display screen.

In other words. Since the optical joystick itself is manufactured to a too small size when the optical joystick is mounted on the portable terminal, even if various types of designs are applied to the surface of the optical joystick, it is difficult to improve or increase the design of the entire portable terminal.

The present invention has been made in view of the above problems, and by configuring the illumination light to the outside of the optical joystick through the reflection pad, the optical aesthetics of the module itself as well as the aesthetics of the entire mobile terminal can be increased. An object of the present invention is to provide a joystick module and a portable terminal having the same.

The optical joystick module and the portable terminal having the same according to an embodiment of the present invention can be configured to illuminate the outside of the optical joystick through a reflective pad, thereby increasing the aesthetics of the module itself as well as the aesthetics of the entire portable terminal. It has an effect.

1 is a perspective view showing a state in which an optical joystick is installed in a portable terminal.
Figure 2 is a state diagram showing the operation of the conventional optical joystick operation.
3 is a perspective view of an optical joystick module according to an embodiment of the present invention.
Figure 4 is an enlarged perspective view of the reflective pad of the component according to the embodiment of the present invention.
5 is a cross-sectional view of an optical joystick module according to an embodiment of the present invention.
6 is an operational state diagram of the optical joystick module according to an embodiment of the present invention.

In order to achieve the above object effectively, the present invention provides a printed circuit board; A housing fixed to the printed circuit board and in contact with a subject; A light source housed in the housing to illuminate the housing; An imaging member accommodated in the housing; A light receiving sensor installed on the printed circuit board and receiving light formed through the image forming member; A reflection pad coupled to the housing and provided with a reflection pattern; An illumination member installed on the printed circuit board and illuminating light toward the reflective pad; Characterized in that it comprises a.

In addition, the reflective pattern is made of a plurality of protrusions arranged so that the light emitted from the lighting member is refracted toward the housing and proceeds.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of an optical joystick module according to an exemplary embodiment of the present invention, FIG. 4 is an enlarged perspective view of a reflective pad among components according to an exemplary embodiment of the present invention, and FIG. 5 is a light according to an exemplary embodiment of the present invention. 6 is a cross-sectional view of the joystick module, Figure 6 is a state diagram of the operation of the optical joystick module according to an embodiment of the present invention.

As shown, the optical joystick module 100 according to the embodiment of the present invention is a housing 40 fixed to the printed circuit board 30 and the light of the light source 50 and the light source 50 accommodated in the housing 40 The light receiving sensor 70 and the light receiving sensor 70 that receives the light formed by the image forming member 60 and the housing 40 are combined with the reflection pad 80 and the illumination member 90 illuminating the light on the reflection pad 80. Include.

At least a pair of coupling protrusions 32 are formed on the printed circuit board 30. Coupling protrusions 32 are formed on the printed circuit board 30 in diagonal directions to each other.

The printed circuit board 30 is provided with a housing 40. The housing 40 has a cap shape in which one surface is opened and an accommodation space is provided therein. The housing 40 may be an optical plastic that transmits only infrared rays or a transparent resin coated with an IR resin as a material.

The housing 40 has a light source 50 accommodated therein to emit light from the inside of the housing 40 toward the outside. The light source 50 may employ an infrared LED, and may employ an infrared LD according to design matters.

In addition, the housing 40 is accommodated in the imaging member 60 for forming the light emitted from the light source 50. The imaging member 60 may be a lens 62 and a prism 64 that refracts light along the light path.

When the imaging member 60 is powered by the light source 50 after the subject is in contact with the surface of the housing 40, the light emitted from the light source 50 passes through the housing 40 to hit the subject and then is reflected. It serves to image the returning light.

In this way, the light formed through the imaging member 60 is transmitted to the light receiving sensor 70 installed in the printed circuit board 30. The light receiving sensor 70 continuously photographs the transmitted light, calculates a change in the received light as a displacement value, and transmits the change to the microcomputer (not shown) of the portable terminal.

Meanwhile, the reflective pad 80 is coupled to the housing 40 and fixed to the printed circuit board 30. The reflective pad 80 may be manufactured in the form of a waveguide or a sheet as a transparent synthetic resin material having high light transmittance.

In the present invention, a reflective pad 80 having a sheet shape will be described by way of example.

In the reflective pad 80 of the present invention, a reflective pattern 82 for guiding the direction of light at a predetermined angle is formed.

The reflective pattern 82 may be formed in the form of a plurality of point protrusions, and each point protrusion is arranged at a predetermined interval. At this time, the point protrusions are not necessarily spaced apart at regular intervals, of course, it is possible to maintain an irregular array structure according to the design matters.

In addition, at least one pair of perforating coupling holes 84 is formed in the reflective pad 80. The coupling hole 84 is coupled to the coupling protrusion 32 formed on the printed circuit board 30. Therefore, the reflective pad 80 can maintain a stable coupling state with the printed circuit board 30.

In addition, the lighting member 90 is installed on the printed circuit board 30 to irradiate light toward the reflective pad 80.

The lighting member 90 may be composed of at least two LEDs, which may be used to irradiate light of the same color or light in different colors.

In this case, the lighting member 90 is arranged to face the reflective pattern 82 of the reflective pad to directly irradiate light toward the reflective pattern 82.

The optical joystick module and the portable terminal having the same according to the embodiment of the present invention configured as described above have the following functions.

When power is supplied to the light source 50 installed in the printed circuit board 30, the light source 50 emits light toward the upper surface of the housing 40 to which the subject is in contact.

At this time, when the subject is in contact with the upper surface of the housing 40, the light emitted from the light source 50 hits the subject and then is reflected back, the returned light is formed through the image forming member 60 and then the light receiving sensor ( 70).

The light receiving sensor 70 calculates the received light as a displacement value and transmits the calculated light to the microcomputer of the mobile terminal, and the microcomputer displays the received data with a cursor.

The reflective pad 80 coupled to the housing 40 and installed on the printed circuit board 30 refracts the light emitted from the lighting member 90 to the outer wall of the housing 40 through the reflective pattern 82.

That is, the illumination member 90 made up of at least one pair of LEDs or LDs is disposed to face the reflection pattern 82 when installed on the printed circuit board 30, so that the light emitted from the housing is formed by the reflection pattern 82. 40 is refracted to the outer surface. Therefore, the outer surface of the housing 40 can be expected to have an aesthetically enhanced effect by the light of the illumination member 90.

Although the optical joystick module and the portable terminal having the same according to the embodiment of the present invention have been described above, the present invention is not limited thereto, and those skilled in the art can of course apply and modify them.

30: printed circuit board 32: coupling projection
40: housing 50: light source
60: imaging member 62: lens
64: prism 70: light receiving sensor
80: reflection pad 82: reflection pattern
84: coupling hole 90: lighting member
100: optical joystick module

Claims (7)

Printed circuit board;
A housing fixed to the printed circuit board and in contact with a subject;
A light source housed in the housing to illuminate the housing;
An imaging member accommodated in the housing;
A light receiving sensor installed on the printed circuit board and receiving light formed through the image forming member;
A reflection pad coupled to the housing and provided with a reflection pattern;
An illumination member installed on the printed circuit board and illuminating light toward the reflective pad; Optical joystick module comprising a. The method of claim 1,
The reflective pattern is a light joystick module, characterized in that the plurality of protrusions arranged to be refracted toward the housing and the light emitted from the illumination member. The method of claim 1,
The reflective pattern is a transparent joystick module, characterized in that arranged facing the illumination member. The method of claim 1,
And a coupling protrusion and a coupling hole, respectively, on the printed circuit board and the reflective pad so that the reflective pad can be stably fixed to the printed circuit board. The method of claim 1,
The lighting member is an optical joystick module, characterized in that at least two LEDs that emit light of the same color. The method of claim 1,
The lighting member is an optical joystick module, characterized in that at least two LEDs for emitting light of different colors. The method according to any one of claims 1 to 6,
A portable terminal provided with the optical joystick module.
KR1020100001786A 2010-01-08 2010-01-08 Optical joystick module and mobile terminal having it KR20110081566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100001786A KR20110081566A (en) 2010-01-08 2010-01-08 Optical joystick module and mobile terminal having it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100001786A KR20110081566A (en) 2010-01-08 2010-01-08 Optical joystick module and mobile terminal having it

Publications (1)

Publication Number Publication Date
KR20110081566A true KR20110081566A (en) 2011-07-14

Family

ID=44920049

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100001786A KR20110081566A (en) 2010-01-08 2010-01-08 Optical joystick module and mobile terminal having it

Country Status (1)

Country Link
KR (1) KR20110081566A (en)

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