KR20100068931A - Optical joy stick and portable electronic device having the same - Google Patents

Optical joy stick and portable electronic device having the same Download PDF

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Publication number
KR20100068931A
KR20100068931A KR1020080127449A KR20080127449A KR20100068931A KR 20100068931 A KR20100068931 A KR 20100068931A KR 1020080127449 A KR1020080127449 A KR 1020080127449A KR 20080127449 A KR20080127449 A KR 20080127449A KR 20100068931 A KR20100068931 A KR 20100068931A
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KR
South Korea
Prior art keywords
light
optical
joystick
guide
light source
Prior art date
Application number
KR1020080127449A
Other languages
Korean (ko)
Inventor
안건준
Original Assignee
크루셜텍 (주)
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Application filed by 크루셜텍 (주) filed Critical 크루셜텍 (주)
Priority to KR1020080127449A priority Critical patent/KR20100068931A/en
Publication of KR20100068931A publication Critical patent/KR20100068931A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/169—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H04M1/233—Construction 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Signal Processing (AREA)
  • Position Input By Displaying (AREA)

Abstract

The present invention relates to an optical joystick and a portable electronic device having the same, comprising: a light source for emitting a subject detection light for sensing a subject, an optical sensor mounted on a substrate, and integrally packaged in a molding material and reflected on the subject An optical pointing unit including an imaging guide having at least one optical fiber for incident the subject detection light introduced into the optical sensor; And it provides a light joystick and a portable electronic device having a light emitting member that is provided around the light pointing unit to emit light including a visible light band including a light.

According to the present invention, the light emitting member can emit light to improve the aesthetics of the exterior and at the same time, it is possible to determine the position of the light joystick in a dark place, and a small sized imaging guide is used alone or in a molding material together with an optical sensor or lighting guide. Since it is integrally packaged and assembled, it is easy to assemble the optical joystick and minimize the impact and damage to the parts during assembly of the optical joystick.

Description

Optical joy stick and portable electronic device having the same

The present invention relates to an optical joystick and an electronic device having the same, and more particularly, to an optical joystick applied to a user interface of an electronic device such as a portable terminal and a portable electronic device having the same.

In general, 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 typical portable electronic device includes a keypad having a plurality of buttons for inputting numbers, letters, or symbols, and a user presses a button on the keypad to input desired data such as numbers or words. You can select the menu by typing in or by pressing the button cursor and select keys.

The portable electronic device includes a display unit to display data input by the user through the keypad and / or related information.

In recent years, in order to support communication services or Internet services using electronic devices, wireless Internet services such as WIBRO (Wireless Broadband) and wireless mobile communication services have been commercialized. ), Windows operating system such as Windows CE is adopted.

In addition, with the development of communication technology, the portable electronic device provides various additional services to the user, and the GUI-based Windows operating system facilitates the provision of the additional service by the portable electronic device.

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 light joystick 10 may include a light source 11 and a cover 12, an illumination guide (not shown) for guiding light emitted from the light source to the cover 12, and an optical signal. An image sensor 15 for detecting the light, an imaging system 14 for guiding light to the image sensor 15, and a holder 13 for receiving components such as the illumination guide, the imaging system 14, and the light source. It is configured to include.

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.

On the outer surface (upper surface) of the cover 12 is formed an operation surface to contact the subject P, such as a finger for the operation of the electronic device, the image sensor 15 for processing the input optical signal It is provided on a PCB (not shown).

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

In more detail, in the state where the subject P is not in contact with the upper side of the cover 12, more specifically, the operation surface, the light emitted from the light source 11 passes through the illumination guide. 12 is emitted to the outside of the cover 12 while penetrating.

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 and is reflected, and then passes through the imaging system 14 to the image sensor. Incident on (15), the image of the subject is imaged by the optical signal.

The imaging system 14 may include a plurality of components such as a prism and a lens made of a material such as glass or optical plastic, and condense the light reflected on the subject P in a predetermined direction and simultaneously condense the image. When transmitted to the sensor 15 and the subject P outside the cover 12 moves, the optical signal reflected by the subject P and sensed by the image sensor 15 also changes.

According to the change of the optical signal detected by the image sensor 15, the movement of the cursor or the content of the input information according to the movement of the subject P is displayed on the display unit 3 of the electronic device 1, or Letters and / or numbers may be input to the electronic device, or a content menu desired by the user may be selected.

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 of the computer, and thus a detailed description thereof will be 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 keypad.

On the other hand, the inventors of the present invention, the surface of the light joystick emits light, so that the user can accurately grasp the position of the light joystick even in a dark place to provide convenience for operation and at the same time, the light having aesthetics in harmony with the color or design of the portable electronic device Joystick was developed.

However, in the conventional optical joystick, when external stray light caused by sunlight or external illumination, for example, visible light band or ultraviolet rays, enters the interior of the optical joystick through the cover 12 and reaches the image sensor. There is a problem that the optical joystick malfunctions, the accuracy of accurate operation according to the movement of the subject is degraded.

In addition, parts of the lighting guide and the imaging system 14, etc., need to be manually assembled by the worker one by one in the holder 13 to be assembled at the correct position. An optical joystick such as the lighting guide and the imaging system 14 is provided. The component to be applied has a problem that the size of the assembly is very small and the assembly is inferior, and the operation of assembling the PCB and the holder 13 on which the image sensor 15 is mounted also has a small size of the component to modularize the optical joystick. Since the work process is cumbersome and the manufacturing time is long, there is a problem that the productivity is lowered, the present inventors have developed an optical joystick with improved assembly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical joystick and a portable electronic device having the same, the surface of which emits light, and the identification and aesthetics are improved.

Another object of the present invention is to provide an optical joystick and a portable electronic device having the same that can prevent or minimize the malfunction of the optical joystick due to external dimming and minimize or prevent the adverse effect of the light source on the user. .

Still another object of the present invention is to provide an optical joystick and a portable electronic device having the same, which can improve the product productivity by shortening the working time required for assembly due to excellent assembly.

In order to achieve the above object, the present invention: a light source for emitting a subject detection light for the detection of the subject, an optical sensor mounted on the substrate, integrally packaged in the molding material and reflected by the subject to flow into the interior An optical pointing unit including an imaging guide having at least one optical fiber for injecting the detected object detection light into the optical sensor; The present invention provides an optical joystick and a portable electronic device having the same, including a light emitting member disposed around the optical pointing unit to emit light including a visible light band.

The light emitting member surrounds the circumference of the light pointing unit and is a light guide emitting light by illumination light emitted from at least one lighting lamp.

The light emitting member may include a reflecting surface that reflects a path of the illumination light emitted from the at least one lamp and introduced into the light emitting member toward the upper end of the light emitting member.

The upper end of the light emitting member may protrude higher than the surface of the electronic device on which the light joystick is mounted.

The optical joystick may further include a cover configured to receive the light source, the optical sensor, the substrate, and the imaging guide, and to form an upper surface of the optical joystick so that the subject comes into contact with the cover, wherein the cover is an infrared band pass filter layer. It is preferably configured to include.

The light joystick may further include an illumination guide that guides the subject detection light emitted from the light source toward the subject and is packaged together with the imaging guide inside the molding material.

The light source is mounted on the substrate; The illumination guide and the imaging guide are packaged together inside the molding material to form an upper package; The upper package may be assembled by being mounted on an upper side of the substrate in which the optical sensor and the light source are integrally packaged.

Unlike the above, the light source is mounted on the substrate; The illumination guide, the imaging guide, the light source, and the optical sensor may be packaged together in the molding member to form an integrated package.

The optical fiber may comprise a plurality of cores and a cladding surrounding the plurality of cores, the optical fiber consisting of a single core and a cladding surrounding the single core; The imaging guide may comprise a plurality of bundles of the optical fiber.

The imaging guide may be packaged together with an optical sensor mounted on the substrate in the molding material.

On the other hand, at least a part of the subject detection light emitted from the light source may be configured to reach the subject directly.

In this case, the light source may be electrically connected to the substrate by a flexible circuit board and disposed to be spaced apart from the substrate. More specifically, when the optical joystick includes the cover, the light source may be disposed on one side of the cover. A light source is provided, but is not limited thereto.

The molding material preferably has a material capable of blocking external light.

In addition to the above configuration, the imaging guide may further include a green lens disposed on at least one side of the entrance side and the exit side of the optical fiber.

The optical joystick and the portable electronic device having the same according to the present invention described above have the following effects.

First, according to the present invention, the outer surface of the light joystick, more specifically, at least the upper end of the surface of the light emitting portion emits light, so that the discrimination of the light joystick is improved even in the dark and the light emission color is selected according to the design of the electronic device for aesthetics. This can be greatly increased.

Second, according to the present invention, the infrared band pass filter layer is provided on the cover to prevent external light outside the infrared band from entering the light joystick, thereby preventing or minimizing malfunction of the light joystick by sunlight or external illumination light. This improves the precision of the optical joystick.

Third, according to the present invention, since at least some of the illumination guide, the imaging guide, the optical sensor, and the light source are assembled in one package, the assembly process may be simplified and workability may be improved to improve product productivity.

Fourth, according to the present invention, the lighting guide, the imaging guide, the optical sensor and the light source as a whole packaged integrally with the molding material to assemble the inside of the cover, or the lighting guide and the imaging guide as a molding material to package the light sensor and the light source image Since they are assembled on top of the sensor and then assembled together, the size of the parts to be handled during the assembly operation is increased to prevent assembly defects due to incorrect assembly and to prevent damage to the components during assembly.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present embodiment, the same configuration and the same reference numerals are used for the same configuration and additional description thereof will be omitted below.

First, a preferred embodiment of the optical joystick according to the present invention will be described with reference to FIGS. 3 to 8.

The first embodiment of the optical joystick according to the present invention, the light source 210 for emitting the object detection light for the detection of the subject, and the optical sensor 220 for detecting the object detection light incident after being reflected on the subject And an imaging guide 340 for injecting a subject detection light reflected from the subject into the optical sensor 220. And a light emitting member 130 provided around the optical pointing unit. In this case, the optical sensor 220 is electrically connected to the substrate 230.

Here, the optical sensor 220 may be provided at a position spaced apart from the substrate 230 by being connected to the substrate 230 and the flexible circuit board, but is mounted on the substrate 230 as in the present embodiment. May be

The imaging guide 340 is integrally packaged inside the molding member 330 to reflect the subject detection light that is reflected on the subject contacting the upper surface of the optical joystick 60 and introduced into the optical joystick. The incident light is incident on the optical sensor 230.

As in the present embodiment, the substrate 230 may form the bottom of the optical joystick 60.

On the other hand, the optical joystick, the cover 100 for receiving the light source 210, the optical sensor 220, the substrate 230 and the imaging guide 340, and forms the upper side of the optical joystick to contact the subject. It may be configured to include more.

Here, the cover 100 has a light transmission area 111 for transmitting the subject detection light emitted from the light source 210 to the outside of the cover 100, the upper surface of the light joystick to contact the subject. Form. The object detection light transmitted upward through the light transmissive region 111 is reflected by reaching and hitting the subject and is re-entered into the cover 100 through the light transmissive region 111 before the imaging guide. The optical sensor 220 is reached through the 340.

The subject is in contact with the upper side of the cover 100, the cover 100 may be made of plastic or glass. In the present embodiment, the cover 100 includes a cover plate 110 in which the subject is in contact with the outer surface, that is, the upper side. The cover plate 110 has the light transmission region 111 described above, and at least some of the upper side surfaces of the cover plate 110 form a subject contact surface for contacting the subject.

In more detail, the object contact surface is an area including an upper surface of the light transmission region 111. When the subject is positioned above the light transmission region 111, the object detection light emitted from the light source 210 is detected. The light transmissive region 111 passes upward and is reflected by the subject and then incident on the imaging guide 340.

The light joystick according to the present invention may further include an illumination guide 310 for guiding the subject detection light so that the subject detection light emitted from the light source reaches the subject.

When the light joystick further includes the cover 100, the illumination guide 310 is also received inside the cover, in which case the illumination guide 310 comprises the light source 210 and the cover, in particular the An optical path is formed between the light transmission regions 111, and the object detection light emitted from the illumination guide 310 passes through the light transmission regions 111.

Of course, when the light joystick does not include the cover 100, the illumination guide 310 contacts the object detection light emitted from the light source 210 with the surface of the light joystick, more specifically, the subject. Guide to the surface of the molding material 330 to be.

The cover 100 may be manufactured in various shapes such as a plate or a cap-shaped case having a shape suitable for a design condition or a design condition, such as a disc or a polygonal plate.

When the cover 100 is manufactured in a cap shape as in the present embodiment, the cover 100 is applied as a housing or a case of an optical joystick that accommodates components such as the imaging guide 340 and the light source 210 therein. It is possible.

In more detail, the cover 100 may further include an edge frame 120 surrounding the circumference of the imaging guide 340. In the present embodiment, the cover 100 has an opening at a bottom surface thereof. And a hollow cap formed therein, wherein the imaging guide 340, the optical sensor 220, and the light source 210 are accommodated in the cover 100 so that the cover 100 is a case of an optical joystick or the like. Applied to the housing. When the light joystick according to the present invention further includes the illumination guide 310, the illumination guide 310 may also be provided inside the edge frame 120.

The cover plate 110 and the rim frame 120 may be integrally injection molded or double injection, and may be separately manufactured and then assembled, and the cover plate forms an upper side of the cover 100. The border frame 120 forms the perimeter of the cover.

The type of the light source 210 is not particularly limited, but may include an infrared source that emits object detection light belonging to the infrared band as in the present embodiment, and at least a part of the cover plate 110, in particular, The light transmitting region 111 transmits infrared light emitted from the light source 210. The infrared source includes an infrared LED and the like.

In this case, the cover 100 preferably functions as an infrared band pass filter for transmitting only light belonging to the infrared band. More specifically, the cover plate 110 emits infrared rays from the light source 210. It is preferable to transmit the light, and to block the visible light band from flowing into the cover 100. The reason is that when the light band other than the infrared ray is introduced into the cover 100 and enters the optical sensor 220, the operation performance of the optical joystick is reduced.

To this end, the cover plate 110 may include an infrared band pass filter layer 113 to block the transmission of light rays other than the infrared band in the vertical direction, although not shown, the infrared band pass filter layer ( 113 may be formed on the bottom surface of the cover plate 110 in such a way that a material serving as an infrared band pass filter is coated or a film having the same function is attached.

The infrared band pass filter layer 113 blocks or attenuates external light of a predetermined band and substantially transmits only an infrared wavelength band.

In more detail, the infrared band pass filter layer 113 has a high refractive index material and a low refractive index material among materials having high transmittance in the infrared band, such as ZnS, ZnSe, Ge, SiO 2 , CaF 2, etc. on the inner surface of the base 121. It may be formed as a coating layer laminated alternately applied.

In addition, the infrared band pass filter layer 113 may include a coating layer in which a high refractive material such as TiO 2 and SiO 2 or a TiO 5 and SiO 2 and a low refractive material are laminated. The TiO 2 and TiO 5 may be a high refractive material. And SiO 2 is a low refractive material.

The coating of the infrared pass material may be formed of a multilayer thin film layer having a multilayer thin film form by a vacuum deposition method using a vacuum deposition apparatus or the like.

Of course, the cover 100 may have an infrared optical plastic material that transmits only light rays belonging to the infrared band.

In addition, the cover 100 is a light blocking area (not shown) to block the light transmission region 111 through which light belonging to the infrared band and the infrared band and visible light band are introduced into the cover 100. It may be partitioned into.

The light blocking area may be formed by coating a light blocking material on one side of the cover plate or attaching a light blocking film or a tape to one side of the cover plate in detail. A shielding tape 112 is attached to the bottom surface of the substrate, in particular, the remaining portions except the light transmitting region, to block light such as visible light and infrared light. In addition, the light transmission region 111 preferably transmits only light belonging to the infrared band. Of course, the entire cover plate may be a light transmitting area.

Of course, the light transmitting region 111 and the light blocking region may be double-injected using different materials, thereby forming the cover plate 110.

The cover plate 110 and the edge frame 120 may be made of a transparent material, for example, a transparent member, but is not limited thereto. Only the cover plate 110 may be manufactured of a transparent material. The edge frame 120 may be made of an opaque member capable of blocking light. Of course, only the portion of the cover plate 110 through which the infrared rays pass, that is, the light transmission region 111 may be made of a transparent member.

When the cover 100 is made of a transparent member as a whole, the external light blocking for blocking external light such as visible light and infrared light on the outer circumferential surface of the cover 100, more specifically, the edge frame 120 as a whole It is preferable that a part (not shown) is provided. The external light shielding unit (not shown) may be configured in various ways such as coating a light shielding material on the circumferential surface of the edge frame 120 or attaching a light shielding film of a thin film.

When the cover plate 110 is formed of a transparent member, the cover plate may further include the above-described infrared band pass filter 113, and may form a light blocking area with the shielding tape 112.

The light source 210 is installed at a predetermined position inside the cover 100 in consideration of the position of the light transmission region 111, the emission direction of the subject detection light, the structure of the cover, and the like.

And the surface of the cover 100, in particular the surface of the cover plate 110 is preferably coated to prevent scratches (Scratch, etc.), for example, a UV coating layer is provided on the surface of the cover 100 It may be.

Meanwhile, in the present invention, the light emitting member 130 emits light including the visible light band to the outside, so that the surface, that is, at least the upper end 131, emits light, thereby improving identification at night or in a dark place. The operability by the user is improved, and the aesthetics can be improved by selecting a color of light emission as a predetermined color according to the color or design of the portable electronic device.

Since the light emitting member 130 may emit light by the light including the visible light band, light other than visible light such as infrared rays may be further included during light emission.

In more detail, when the cover 100 is provided, the light emitting member 130 may be provided to surround the circumference of the cover 100 and may emit light by itself using a fluorescent material. In an example it is configured to emit light by at least one lamp 140.

The light emitting member 130 may be set to selectively emit light in a dark place or only at night. The lamp 140 may be operated only in a dark place or at night so that the light emitting member 130 may selectively emit light.

The emission color of the light emitting member 130 is realized according to the color of the light emitted from the at least one lamp 140, that is, the wavelength band of visible light included in the light emitted from the lamp 140, but the emission color is realized. The present invention is not limited thereto, and the desired color can be realized by applying a material having a predetermined color for color implementation to the surface of the light emitting member 130, that is, the upper end 131.

In addition, an example of the at least one lamp 140 may include an LED emitting monochromatic light or white light, but the type of the at least one lamp 140 is not limited thereto and may emit different predetermined visible light. A plurality of LEDs may be disposed to implement a color mixed with the light emitting member 130, or one or more light may be sequentially emitted to change the color of light emitted from the light emitting member 130 over time. Since the illumination light emitted from the lamp 140 may include light belonging to a visible light band that is visually recognizable, light other than the visible light band may be further included, for example, infrared rays.

In addition, the at least one lamp 140 may be disposed at various positions spaced apart from the lower side of the light emitting member 130 by a predetermined distance, in this embodiment, separate from the substrate 230 forming the light pointing unit Although the present invention is provided on a substrate, the present invention is not limited thereto, and the at least one lamp 140 is installed on the substrate 230 forming the optical pointing unit, the optical joystick according to the present invention described below. The 12th embodiment will be described in more detail.

In the present invention, the light emitting member 130 is a light guide that wraps around the light pointing unit and emits light by the light emitted from the at least one lamp 140, and emits from the at least one lamp 140. And a reflection surface 132 reflecting the path of the illumination light introduced into the light emitting member 130 toward the upper end 131 of the light emitting member 130.

In the present exemplary embodiment, the reflective surface 132 may reflect light emitted from the at least one lamp 140, that is, illumination light including visible light, to the upper end 131 of the light emitting member 130. It may be formed of an inclined surface formed along the inner circumference.

The inclination angle formed by the reflective surface 132 is the light emitted from the at least one lamp 140 flowing in the horizontal direction to the light emitting member 130, that is, the upper end 131 of the light emitting member 130, that is, Preferably, the inclination angle is formed to have an inclination angle of approximately 45 ° with the horizontal line so as to be reflected in a substantially vertical direction. However, the inclination angle is not limited thereto, and the at least one lamp 140 may be disposed from the light emitting member 130. It can be adjusted within the angle range that is introduced and reflected to the upper end 131.

In the present embodiment, it is more preferable that the upper end portion 131 of the light emitting member 130 protrudes higher than the surface 1a of the electronic device 50 on which the light joystick according to the present invention is mounted.

That is, the upper end portion 131 forms a top circumference of the light emitting member 130, and is substantially composed of a vertical surface 131a and a horizontal surface 131b to form an appearance of the electronic device 50. The upper surface of the light emitting member 130 is seated on the horizontal surface 131b and in close contact with the vertical surface 131a, and the vertical surface 131a protrudes higher than the surface 1a of the electronic device 50. 131 protrudes outward from the surface 1a of the electronic device 50. Accordingly, the light emitting area emitted outside the surface 1a of the electronic device 50 through the upper end 131 of the light emitting member 130 is increased, thereby further improving identification and aesthetics.

Meanwhile, in the present exemplary embodiment, the light joystick further includes the cover 100, so that the light emitting member 130 is provided on the outside of the cover 100. However, the light joystick may cover the cover 100. If not further included, the light emitting member 130 may take over the role of the cover 100.

That is, the upper surface of the light emitting member 130 is formed in a closed form, not an open form, the light emitting member 130 is the light source 210 and the light sensor 220 and the illumination guide 310 and The upper surface of the optical joystick may be formed to accommodate the imaging guide 340 and to contact the subject.

In such a case, the illumination light emitted from the lamp 140 and introduced into the light emitting member 130 on the inner circumferential surface of the light emitting member 130 is the light source 210, the light sensor 220, and the illumination. Light blocking unit (not shown) for blocking the guide 310 and the imaging guide 340 is preferably provided. The light blocking unit may be configured in various ways such as coating a light blocking material on the inner circumferential surface of the light emitting member 130 or attaching a light shielding film of a thin film.

In addition, since the light emitting member 130 replaces the cover 100, the light emitting member 130 may further include the above-described infrared band pass filter layer 113 on the inner upper surface of the light emitting member 130, and the shielding tape 112. It is also possible to form a light blocking region.

In addition, the upper surface of the light emitting member 130 is preferably coated to prevent scratches (Scratch), for example, a UV coating layer may be provided on the upper surface of the light emitting member 130, for example.

On the other hand, the imaging guide 340 is integrally packaged in the molding member 330, in this embodiment the illumination guide 310 and the imaging guide 340 is integrally mutually by the molding member 330. The light joystick may be provided inside the light joystick in a packaged and modular state, and the light source 210 may be provided at various positions inside the cover.

In this embodiment, the light source 210 is packaged integrally with the optical sensor 220, the optical sensor 220 is electrically connected to the substrate 230 in a detachable or integrally coupled state, this embodiment In the example, the light source 210 is mounted on the substrate 230 together with the optical sensor 220 and packaged on the substrate 230 integrally with the optical sensor 220 to form part of the optical joystick. .

Here, the illumination guide 310 and the imaging guide 340 together with the light source 210 and the optical sensor 220 may be integrally packaged integrally inside the molding material and modularized as an integrated package, or the illumination guide The upper package in which the 310 and the imaging guide 340 are integrally packaged by the molding material is seated on the lower package in which the light source 210 and the optical sensor 220 are integrally packaged on the substrate. The upper package and the lower package may be assembled.

In the present embodiment, the imaging guide 340 integrally packaged by the illumination guide 310 and the molding material 330 and the upper package 300 having the illumination guide 310 and the light source mounted on the substrate ( An example of fabricating the lower package 200 having the optical sensor 220 packaged integrally with the light source 210 and then assembling them with each other will be described.

The optical sensor 220 and the light source 210 are mounted on a circuit board, for example, a PCB 230 through a process such as surface mount technology such as Surface Mount Technology (SMT).

In addition, the optical sensor 220 and the light source 210 may be viewed as being integrally packaged by being mounted on the substrate, and the optical sensor 220 and the light source 210 mounted on the substrate as in the present embodiment may be considered. There is a way to be integrally packaged inside the molding material by the molding material 240, the molding material 240, 330 is an epoxy molding compound (EMC) and the like.

In more detail, the light source 210 and the optical sensor 220 are mounted on the substrate 230 at a position spaced apart from each other, and then the light source 210 and the optical sensor are formed by the molding material 240. By applying and solidifying 220, these two configurations are packaged integrally. That is, after the mold (frame) of a predetermined shape is in close contact with the substrate 230 and the liquid EMC is filled in the mold (not shown) and the EMC is hardened, the lower package according to the present embodiment ( 200) is formed.

For convenience of description, the molding member 240 for integrally packaging the light source 210 and the optical sensor 220 is called a first molding member, and the illumination guide 310 and the imaging guide 340 are integrally packaged. The molding material 330 to be referred to as a second molding material.

As the first molding member 230, a transparent or transparent molding material, for example, Clear EMC, may be applied. In this case, a light blocking film for blocking light may be disposed between the light source 210 and the optical sensor 220. The light blocking wall 250 may be provided, but the first molding material is not limited to a transparent material. Accordingly, the infrared light emitted from the light source 210 is prevented from directly entering the optical sensor 220.

The light blocking layer 250 may be formed of a black EMC that does not transmit light or a shielding tape that does not transmit light, such as an amide tape or a film, or the light source 210 and the light sensor. It may be configured in various ways, such as a mask in which the holes 220 are fitted.

The optical sensor 220 detects incident light and continuously photographs an image of a subject, and the change of the captured image screen is calculated as a displacement value. The optical sensor 220 has an imaging area including a plurality of pixels, and the image of the subject is picked up as light reflected from the subject is incident on the imaging area.

Apart from the lower package 200, the illumination guide 310 and the imaging guide 340 are formed by the second molding member 330 to correspond to the light source 210 and the optical sensor 220, respectively. The upper package 300 is formed inside the two molding materials.

The second molding material 330 may have the same material as the first molding material 240, and in the present embodiment, the second molding material 330 may have a material capable of blocking external light. An example of the second molding material 330 capable of blocking external light may include a black EMC, and the illumination guide 310 and the imaging guide 340 may be disposed in a pre-processed mold. The upper package 300 is formed by filling and solidifying the second molding material 330.

In more detail, when the upper package 300 is seated on the lower package 200, the incidence side of the illumination guide 310 is positioned above the light source 210, and thus, of the imaging guide 340. The illumination guide 310 and the imaging guide 340 are aligned and packaged integrally using the second molding material 330 such that the emission side is positioned above the optical sensor 220.

When the illumination guide 310 and the imaging guide 340 is integrally packaged by the second molding material 330 as described above, a process of smoothly treating the surface of the upper package 300, in particular, the upper surface thereof, For example, a polishing process may be performed.

When the lower package 200 and the upper package 300 are completed, the upper package 300 is stacked on the upper side of the lower package 200. The lower package 200 and the upper package 300 may be combined with each other by forming protrusions and grooves 241 and 331 on the lower package 200 or the upper package 300, and for double-sided tape or adhesive bonding. These can be combined in various ways, such as by fixing them together using a resin or the like.

When the lower package 200 is coupled to the upper package 300 and integrally modularized as described above, the lower package 200 is combined with the cover 100 to form the bottom of the cover 100.

In the present embodiment, the illumination guide 310 is configured to include a waveguide for guiding light by total reflection, but is not limited thereto. The light source 210 may be packaged in the second molding member 330. If it is an optical member capable of guiding the subject detection light to the cover 100 side. The illumination guide 310 is preferably coated with a high reflectance on the wall surface (inner wall surface and / or outer wall surface) so that the object detection light reaches the upper inner surface of the cover by total reflection.

The imaging guide 340 is for imaging the light reflected by the subject after being emitted from the light source 210 on the optical sensor 220. In the present invention, the imaging guide 340 includes an optical fiber 341.

The optical fiber 341 serves as a path for transmitting the object detection light to the optical sensor as a medium for transmitting an optical signal or light. The optical fiber 341 is classified into a single mode optical fiber and a multi mode optical fiber according to the size of the core diameter.

The optical fiber 341 includes at least one core forming a passage for optical transmission and a clad surrounding the at least one core. In the present invention, the optical fiber 341 is a bi-core optical fiber or a multi-core core optical fiber composed of a plurality of cores 341a and a clad 341b surrounding the core, or a single or one core is provided inside the clad. It may be a single core fiber.

In general, since the entire pixel area of the optical sensor 220 is wider than the cross-sectional area of the single-core optical fiber, when the optical fiber 341 is a single-core optical fiber, the imaging guide 340 is a bundle of the plurality of single strands. It comprises a core optical fiber. Of course, the multicore core optical fiber may also be bundled in correspondence to the width of the entire pixel region.

However, when the imaging guide 340 includes the bundle of the single core core optical fiber, the area occupied by the clad present as many as the number of the single core core optical fiber in the imaging guide 340 becomes wider, in this case Among the pixels provided in the optical sensor 220, the shaded area where the subject detection light cannot reach increases, thereby decreasing the precision or sensitivity of the optical joystick operation.

However, when the imaging guide 340 includes at least one of the multicore core optical fibers, the area occupied by the clad 341b may be significantly reduced compared to the single core core optical fiber bundles having the same thickness and the number of cores may be increased. Therefore, the shadow area where the subject detection light cannot reach can be minimized, thereby improving the precision or sensitivity of the light joystick operation.

That is, when the imaging guide 340 includes the multi-core core optical fiber, since more cores 341a are positioned in the pixel area of the optical sensor 220, the cores matched with each unit pixel are matched. As the number increases, the movement of the subject can be captured more accurately.

Of course, the imaging guide 340 may be made of a mixture of the single-core optical fiber and the multi-core core optical fiber.

On the other hand, the imaging guide 340 for injecting the subject detection light reflected on the subject to the optical sensor may further comprise a lens unit adjacent to the optical fiber 341. The lens unit may be a green lens (Gradient Index Lens), a convex lens or a high-refractive lens, such as a variety of lenses to form an image may be applied, the green lens may adjust the position where the image of the subject is formed according to the pitch.

The lens unit, more specifically, the green lens may be disposed on at least one of the incidence side and the outgoing side of the optical fiber 341, so that the green is disposed on both sides of the optical fiber with the optical fiber 341 therebetween. A lens may be provided, or the optical fibers may be disposed on both sides of the green lens with the green lens therebetween.

When the subject detection light emitted from the optical fiber 341 is directly incident on the optical sensor, the output side end of the optical fiber is disposed in the pixel area of the optical sensor 220 to prevent leakage or loss of the subject detection light. It is preferable to connect.

The illumination guide 310 may be parallel to, or parallel to, the imaging guide 340. In this case, only a part of the light emitted from the illumination guide 310 and reflected by the subject is the imaging guide 340. Since the amount of light incident on the optical sensor 220 is reduced, the performance of the optical joystick is reduced.

The direction in which the illumination guide 310 is disposed may be disposed to be perpendicular to the substrate 230 or to be inclined at a predetermined angle. However, the arrangement of the illumination guide 310 is preferably configured to be inclined at a predetermined angle from the vertical direction with respect to the substrate.

In other words, when both members are parallel to each other, such as when the illumination guide 310 is disposed vertically in the vertical direction and the imaging guide 340 is disposed vertically in the vertical direction, only a part of the light reflected by the subject is reflected. The amount of light flowing into the imaging guide 340 or flowing into the imaging guide may be zero (0).

In order to compensate for this problem, the intensity of the light source may be increased, but there is a problem in that power consumption is increased and cost is high. Accordingly, the illumination guide 310 and the imaging guide 340 may be disposed to be closer to the incidence side of the imaging guide as the top, that is, toward the exit side. For example, the extension line, for example, the axis line of the illumination guide 310 and the imaging guide 340 may be disposed to cross each other.

As a specific example, when the imaging guide 340 is disposed vertically in the vertical direction, the illumination guide 310 is inclined toward the imaging guide, that is, when the obliquely disposed, the majority of the light emitted from the illumination guide 310. After being reflected by the subject, the light may enter the imaging guide 340.

The exit side of the illumination guide 310 and the entrance side of the imaging guide 340 may be arranged to be spaced apart from each other or may be arranged to contact and abut each other. In addition, both the illumination guide 310 and the imaging guide 340 may be disposed to be inclined inclined.

When the subject comes into contact with the cover 100 of the optical joystick according to the present invention configured as described above, the light emitted from the light source 210 passes through the illumination guide 310 and then is transmitted to the subject.

The object detection light reflected by hitting the subject passes through the cover 100 and enters the inside of the cover, and then enters the optical sensor 220 through the imaging guide 220.

The optical sensor 220 photographs the incident light, and compares the captured image screen in real time to calculate a displacement value resulting in a difference in the image screen, and the calculated displacement value is a microcomputer (not shown) of the portable electronic device. The movement of the cursor is displayed on the display screen 51 of the portable electronic device 50 by the microcomputer.

On the other hand, although not shown, when the light source 210 emits infrared rays as described above, the imaging guide 340 may be further provided with an infrared bandpass filter for blocking the inflow of light outside the infrared wavelength band. .

The infrared band pass filter may be provided at the incidence side and / or the exit side of the imaging guide 340, and may be configured in various ways such as a film, a tape, or an infrared band pass material.

8 illustrates a process of assembling the optical joystick of the present invention manufactured by the upper package 300 and the lower package 200, respectively.

First, the light source 210 and the optical sensor 220 are respectively installed on the substrate 230 by a SMT process at a predetermined distance from each other, and the substrate 230 on which the light source 210 and the optical sensor 220 are mounted. ) To install the mold and inject the liquid first molding material 240 into the mold to manufacture the lower package 200.

The illumination guide 310 and the imaging guide 340 are disposed at a predetermined position according to design conditions, and then integrated with the second molding material 330 to manufacture the upper package 300. Here, the protrusion 331 and the groove 241 is formed on the surface to which they are bonded so that the upper package 300 and the lower package 200 can be accurately coupled.

The manufacturing order of the upper package 300 and the lower package 200 does not matter, and the upper package may be manufactured first or may be manufactured at the same time. After the upper package 300 and the lower package 200 are coupled to each other, the upper package 300 and the lower package 200 are assembled inside the cover 100.

After the upper package 300 and the lower package 200 are assembled in a coupled state inside the cover 100, the light emitting member 130 is installed to surround a circumference of the cover 100. The lamp 140 is installed at the lower outer side of the light emitting member 130.

As an example of the portable electronic device 50 having the optical joystick having the above configuration, the mobile phone is illustrated in FIG. 6, and the portable electronic device 50 is various, such as a mobile phone, a PDA, a remote controller, a navigation device, and a display screen. It is generally applicable to an electronic device that requires the use of a pointer as the provided electronic device.

In addition, the contents described in the first embodiment of the optical joystick according to the present invention may be equally applied to each of the other embodiments except for portions that conflict with or are different from those described in the other embodiments described below. The same reference numerals are used for the same configuration.

In addition, among the contents described in the first embodiment of the optical joystick according to the present invention, the structure of the light emitting member and the illumination lamp may be equally applied to each of the other embodiments described below, and thus the description and description thereof will be omitted. . That is, in the other embodiments described below, only the optical pointing unit of the optical joystick according to the present invention will be described, and for convenience, the optical pointing unit will be collectively described as an optical joystick.

On the other hand, as shown in the second embodiment of the optical joystick according to the present invention shown in Figure 9, the illumination guide 310a for guiding the object detection light emitted from the light source 210 to the inner side of the cover is the exit side In contact with the incidence side of the imaging guide 340 may be disposed to be inclined in a form supported by the imaging guide 340.

In this case, since the exit side of the illumination guide 310a and the incident side of the imaging guide 340 are adjacent to each other, the incident rate of the subject detection light reflected from the subject to the imaging guide 340 can be improved, and the cover It can minimize the thickness.

On the other hand, part of the contents of the invention described in the above-described first embodiment except for the arrangement structure of the illumination guide 310a can be applied to the second embodiment of the present invention as a whole, and the repeated description thereof is omitted. The same reference numerals are used for the same configuration. In addition, the content described in the second embodiment may be equally applicable to other embodiments described below, and a repeated description thereof will be omitted.

Next, with reference to Figs. 10 to 12, the third to fifth embodiments of the optical joystick according to the present invention will be described. The embodiments of the present invention may be equally applicable to the cover 100, the light source 210, and the illumination guide 310 described in the above-described first embodiment. The imaging guides 340a and 340b incident to the 220 may include an optical fiber 341 and a lens unit 342 neighboring the optical fiber.

The lens unit 342 may be a green lens (Gradient Index Lens), a convex lens or a high refractive lens, such as a variety of lenses may be applied, in this embodiment, the lens unit 342 by applying the green lens pitch The position at which the image of the subject is imaged may be adjusted accordingly.

The lens unit, and more specifically, the green lens 342 may be disposed on at least one of the incidence side and the outgoing side of the optical fiber 341. Although not illustrated, the green lens 342 may be disposed with the optical fiber 341 therebetween. The green lens 342 may be provided at both sides of the optical fiber 341, and the optical fiber 341 may be disposed at both sides of the green lens 342 with the green lens 342 interposed therebetween. .

When the lens unit 342 and the optical fiber 341 are in contact with each other, a tube (not shown) may be provided to surround the connection between the lens unit and the optical fiber to prevent light leakage.

And, as in the fifth embodiment shown in FIG. 12, the upper surface of the lower package 200a in which the optical sensor 220 and the light source 210 are integrated by the first molding member 240, more specifically, At least one installation grooves 241 and 242 for installing the illumination guide 310 and the imaging guides 340, 340a and 340b may be formed on the light source 210 and the light sensor 220.

Accordingly, the mold for forming the upper package 300a is formed by aligning the entrance side of the illumination guide 310 and the exit side of the imaging guides 340, 340a and 340b into the installation grooves 241 and 242. The upper package 330a may be formed by installing and filling the second molding material 330 in the mold.

The installation grooves 241 and 242 may be formed by removing an upper side of the light source 210 and an upper side of the light sensor 220 in a state where the lower package 200a is formed by the first molding material 240. In the packaging process by the first molding member 240, the forming member for forming the installation groove on the upper side of the light source 210 and the upper side of the optical sensor 220, and the molding after the lower package is completed When the member is removed, the installation grooves 241 and 242 are formed.

In addition, since the contents of the present invention described in the first embodiment are not described in the present embodiments, the same may be applied to the third to fifth embodiments as a whole. The same reference numerals are used for the same configuration.

Of course, as in the above-described second embodiment, the illumination guide 310 of each of the third to fifth embodiments has its exit side in contact with the incidence side of the imaging guide 340 and thus the imaging guide 340. , 340a, 340b may be disposed to be inclined in a form supported by, the light source is preferably configured to include an infrared source such as the above-described infrared LED to reduce visual fatigue. In addition, the contents described in the third to fifth embodiments may be equally applied to other embodiments described below.

Next, referring to the sixth embodiment according to the present invention illustrated in FIG. 13, the optical joystick according to the present invention adjusts the height (or thickness) from the substrate 230 to the top surface of the upper package 300b. To this end, the upper package 300b and the lower package 200b may further include one or more spacers 500 provided between the spacers.

The upper package 300 refers to an integrated package of the illumination guide 310 and the imaging guide 340, and the lower package 200 includes the optical sensor 220 and the light source 210 on the substrate ( 230, packaged in one piece.

The optical joystick may be manufactured to be thin in accordance with the trend of slimming of portable electronic devices. However, when the optical joystick has to have a predetermined height or more from the substrate 230 to the upper surface of the upper package 300b, the upper package 300b may be used. And a spacer 500 such as a gasket of the lower package 200b may be placed, and the spacer 500 has a through hole penetrated in the vertical direction for installation of the illumination guide 310 and the imaging guide. It is preferable to be made of a light-shielding material that blocks light such as light rays and infrared rays.

Of course, the contents not described in the present embodiments among the contents described in the first to fifth embodiments described above may be equally applied to the sixth embodiment of the optical joystick according to the present invention. Repeated description is omitted and the same reference numerals are used for the same configuration.

As in the first to sixth embodiments, the upper packages 300, 300a and 300b and the lower packages 200, 200a and 200b may be separately manufactured and then assembled, but are illustrated in FIGS. 14 and 15. As in the seventh embodiment of the present invention, the illumination guide 310, the imaging guides 340, 340a, and 340b, the optical sensor 220, and the light source 210 are integrated with the molding material 610. 600 may be formed.

In more detail, the light source 210 and the light sensor 220 are mounted on the substrate 230, and the illumination guide 310 and the imaging guide correspond to the light source 210 and the light sensor 220. 340, 340a, and 340b are placed, and then all of them are integrally packaged using the molding material 610.

In other words, after the light source 210 and the light sensor 220 are mounted on the substrate 230 through a process such as SMT, the light guide 310 may correspond to the light source 210 and the light sensor 220. ) And the imaging guides 340, 340a, and 340b, and a mold having a predetermined shape, for example, a rectangular frame shape, is disposed on the substrate and filled with a liquid EMC to solidify the mold. 600 is formed. The molding material 610 may be made of a material capable of blocking external light, for example, the above-described black EMC.

Next, referring to FIGS. 16 and 17, a mask is stacked on the substrate 230 in which the light source 210 and the optical sensor 220 are mounted and integrated, and the mask 260. The light source 210 has an insertion hole 261 and 262 penetrated in the vertical direction to insert the light source 210 and the optical sensor 220, and the mask 260 is a light blocking material, for example, a light blocking plastic, glass, or a metal plate. The light emitted from the light source 210 may be prevented from entering the optical sensor 220.

In addition, when the mask 260 is stacked on the substrate 230 in which the light source 210 and the optical sensor 220 are integrated, the lower package 200c is formed. After the illumination guide 310 and the imaging guides 340, 340a, and 340b are integrally packaged by the second molding material 330, the upper package 300c formed on the upper side of the mask 260 is mounted on the cover ( The optical joystick is assembled by combining with 100).

The infrared band pass filter layer 123 may not be provided on the cover 100, but may be provided on an upper surface of the integrated package 600 or the upper package 300, 300a, 300b, or 300c.

Next, the ninth to eleventh embodiments of the optical joystick according to the present invention will be described with reference to FIGS. 18 to 20.

Referring to FIG. 18, the optical joystick according to the ninth embodiment includes the cover 100, the substrate 230, the optical sensor 220, and the molding material 610a described in the first embodiment. It may be configured to include the imaging guide 340 integrally packaged with the optical sensor 220 by the). That is, the imaging guide 340 is packaged together with the optical sensor 200 in the molding material 610a.

The light source 210a and the optical sensor 220 for emitting the object detection light are installed on the substrate 230, and the imaging guide 340 is positioned above the optical sensor 220. Ash is applied to the outside of the optical sensor 220 and the imaging guide 340 to form an optical sensor-imaging guide integrated package 600a.

Here, the molding material 610a may have a material capable of blocking external light, and the optical sensor-imaging guide integrated package 600a is formed using a molding material made of a material capable of blocking light, such as the black EMC described above. . The light source may include an infrared source.

19 and 20, the optical sensor (not shown) is formed by the cover 100, the substrate 230, the light source 210b, the optical sensor 220, and the molding material 610a described in the first embodiment. The tenth and eleventh embodiments of the optical joystick including the imaging guide 340 packaged integrally with 220 are shown, respectively.

In other words, the imaging guide 340 is packaged together with the optical sensor 200 in the molding member 610a to form an optical sensor-imaging guide integrated package 600a, and the light source is an infrared light source. It may be configured to include. In addition, in the eighth and ninth embodiments of the optical joystick, the substrate 230 and the light source 210b emitting the object detection light are electrically connected to each other by the flexible substrate 231.

When the light source 210b and the substrate 230 are connected to each other by the flexible substrate 231 as described above, the degree of freedom of installation of the light source 210b is improved, so that the optimum position of the optical joystick is designed, for example, The light source 210b may be provided at an optimal position in consideration of a relationship with a component (such as a structure or position of an imaging guide and / or a structure of a cover).

In the optical joystick according to the tenth and eleventh embodiments, the light source 210b is disposed inside the cover 100 while being spaced apart from the substrate, and more specifically, the cover 100. It is provided on one side of the inside, and is connected to the flexible substrate 231 to emit the subject detection light toward the inner side of the cover, in particular the lower side of the subject contact surface.

Here, the light source 210b of the optical joystick according to the tenth embodiment is provided at one side of the optical sensor-imaging guide integrated package, and more specifically, is disposed adjacent to the lower side of the upper side of the cover. The light source 210b may be mounted on and supported by the molding material 610a.

In addition, the light source 210b of the optical joystick according to the eleventh embodiment is connected to the flexible substrate 231 and is provided on the inner wall of the cover 100 and the subject in the upper direction of the imaging guide 340. The detection light is emitted.

The seventh to ninth embodiments of the optical joystick are not provided with the illumination guides described in the above-described embodiments, and all or part of the object detection light emitted from the light source 210b, for example, the infrared rays. In particular, most of them, after directly reaching the inner surface of the cover 100 without going through a light guide such as a mirror, a reflecting plate or a waveguide, and then penetrates the cover, in particular the light transmission areas (111a, 121a) upwards Hit the subject.

Although not shown, the ninth to eleventh embodiments of the optical joystick may further include a separate lighting guide, which may be installed in consideration of the installation position of the light source or the intensity of the light source. Can be considered.

However, when the subject detection light emitted from the light sources 210a and 210b is emitted directly to the inner surface of the cover, in particular the light transmission area, without directly passing through the illumination guide, the manufacturing / installation cost of the illumination guide may be reduced. Can be.

Meanwhile, FIG. 21 shows a twelfth embodiment of the optical joystick according to the present invention. In the first embodiment, the lamp 140 is installed on a substrate separate from the substrate 230 forming the optical pointing unit. In the present embodiment, the lamp 140 is installed on the substrate 230 that forms the light pointing unit, that is, the substrate 230 on which the light source 210 and the light sensor 220 are mounted.

As described above, in the twelfth embodiment, the illumination lamp 140 that emits the illumination light for emitting the light joystick through the light emitting member 130 is mounted on the same substrate 230 on which the light source 210 and the light sensor 220 are mounted. As it is mounted, the assemblability of the optical joystick can be further improved.

Hereinafter, the operation of the optical joystick will be described with reference to FIGS. 3 to 7 based on the first embodiment of the present invention.

When the illumination light is emitted from the lamp 140, the illumination light is introduced into the light emitting member 130 and guided to the upper end 131 of the light emitting member 130, and the guided illumination light is the light emitting member 130. The upper end 131 of the light emitting member 130 is emitted to the outside through the upper end 131 of the light emitting to the outside.

At this time, the illumination light emitted from the lamp 140 is horizontally introduced into the lower portion of the light emitting member 130 is reflected to the upper end 131 through the reflective surface 132 is the upper end of the light emitting member 130 ( The light emitting effect through 131 may be further enhanced.

On the other hand, the light emitted from the light source 210 is transmitted through the cover 100 through the illumination guide 310 to be emitted upwards, if there is a subject outside the cover 100, the illumination guide ( After the light emitted from 310 hits the subject and is reflected, the light is incident on the imaging guide 340, and the imaging guide transmits the light reflected by the subject to the optical sensor 220.

The movement of the cursor or the pointer is implemented on the display screen 51 of the portable electronic device 50 according to the displacement value of the incident light of the optical sensor 220 that changes with time.

When the light emitted from the light source 210 is an infrared ray, the cover 100 and / or the light flowing into the optical sensor 220 through the illumination guide 310 and the imaging guide 340 are limited to the infrared band. Alternatively, the above-described infrared band pass filter layer may be provided in the imaging guide and / or the upper package 300, 300a, 300b, 300c, the integrated package 600, or the optical sensor- imaging guide integrated package.

Having described the preferred embodiments according to the present invention as described above, the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope of the present invention is known to those skilled in the art It is obvious to those who have it.

Therefore, the above-described embodiments are to be considered as illustrative and not restrictive, and thus, the invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

1 is a perspective view illustrating an example of a mobile phone in which a conventional optical joystick is mounted.

2 is a perspective view showing an example of a conventional optical joystick.

3 is an exploded perspective view showing a first embodiment of the optical joystick according to the present invention.

4 is a cross-sectional view of the light joystick shown in FIG. 3.

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a perspective view showing an embodiment of a portable electronic device having an optical joystick according to the present invention.

FIG. 7 is a cross-sectional view and an enlarged cross-sectional view illustrating a state in which a finger as a subject contacts a light joystick illustrated in FIG. 3.

8 is a process schematic diagram schematically showing a process of manufacturing a first embodiment of an optical joystick according to the present invention.

9 is a cross-sectional view showing a second embodiment of the optical joystick according to the present invention.

10 is a cross-sectional view showing a third embodiment of the optical joystick according to the present invention.

11 is a cross-sectional view showing a fourth embodiment of the optical joystick according to the present invention.

12 is a sectional view showing a fifth embodiment of an optical joystick according to the present invention.

13 is a sectional view showing a sixth embodiment of the optical joystick according to the present invention.

14 is a sectional view showing a seventh embodiment of an optical joystick according to the present invention.

FIG. 15 is a process schematic diagram schematically showing a process of manufacturing the optical joystick shown in FIG. 14.

16 is a cross-sectional view showing an eighth embodiment of an optical joystick according to the present invention.

FIG. 17 is a process schematic diagram schematically showing a process of manufacturing the optical joystick shown in FIG. 16.

18 is a sectional view showing a ninth embodiment of an optical joystick according to the present invention.

19 is a sectional view showing a tenth embodiment of the optical joystick according to the present invention.

20 is a cross-sectional view showing an eleventh embodiment of the optical joystick according to the present invention.

21 is a sectional view showing a twelfth embodiment of the optical joystick according to the present invention.

 Explanation of symbols on the main parts of the drawings

100: cover 110: cover plate

112: shielding tape 113: infrared band pass filter layer

120: cover frame 130: light emitting member

131: upper portion 132: reflective surface

140: lamp 200: lower package

210: light source 220: light sensor

230: substrate 240: molding material

250: light shield 260: mask

300: upper package 310: lighting guide

330: molding material 340: imaging guide

341: optical fiber 342: lens unit

Claims (17)

A light source for emitting a subject detection light for the detection of a subject, an optical sensor mounted on a substrate, and packaged integrally inside the molding material, the subject detection light reflected by the subject and introduced into the optical sensor An optical pointing unit comprising an imaging guide having at least one optical fiber for the optical device; And And a light emitting member disposed around the light pointing unit to emit light including a visible light band. The method of claim 1, The light emitting member is a light joystick that surrounds the circumference of the light pointing unit, and is a light guide for emitting by the illumination light emitted from at least one lamp. The method of claim 2, The light emitting member includes a light joystick including a reflecting surface which is emitted from the at least one lamp and reflects the path of the illumination light introduced into the light emitting member toward the upper end of the light emitting member. The method of claim 2, The light joystick of the upper end of the light emitting member protrudes higher than the surface of the electronic device on which the light joystick is mounted. The method of claim 1, The optical joystick further comprises a cover configured to receive the light source, the optical sensor, the substrate, the imaging guide, and to form an upper surface of the optical joystick so that the subject comes into contact with the optical joystick. The method of claim 5, And the cover comprises an infrared band pass filter layer. The method of claim 1, The optical joystick further comprises an illumination guide for guiding the object detection light emitted from the light source toward the subject and packaged together with the imaging guide inside the molding material. The method of claim 7, wherein The light source is mounted on the substrate; The illumination guide and the imaging guide are packaged together inside the molding material to form an upper package; The upper package is an optical joystick is mounted on the upper side of the substrate in which the optical sensor and the light source is integrally packaged. The method of claim 7, wherein The light source is mounted on the substrate; And the illumination guide, the imaging guide, the light source, and the optical sensor are packaged together in the molding material to form an integrated package. The method of claim 1, And the optical fiber comprises a plurality of cores and a cladding surrounding the plurality of cores. The method of claim 1, The optical fiber consists of a single core and a cladding surrounding the single core; The imaging guide includes an optical joystick including a plurality of bundles of the optical fibers. The method of claim 1, The imaging guide is packaged with an optical sensor mounted on the substrate in the molding material. The method of claim 12, The light source may be electrically connected to the substrate by a flexible circuit board and disposed to be spaced apart from the substrate. The method according to any one of claims 1 to 13, The molding material is an optical joystick having a material capable of blocking external light. The optical joystick according to any one of claims 1 to 13, wherein the imaging guide includes a green lens disposed on at least one of an entrance side and an exit side of the optical fiber. The light joystick according to any one of claims 1 to 13, wherein the light source comprises an infrared light source for emitting a subject detection light belonging to an infrared band. A portable electronic device having the light joystick of any one of claims 1 to 13.
KR1020080127449A 2008-12-15 2008-12-15 Optical joy stick and portable electronic device having the same KR20100068931A (en)

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KR1020080127449A KR20100068931A (en) 2008-12-15 2008-12-15 Optical joy stick and portable electronic device having the same

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KR20100068931A true KR20100068931A (en) 2010-06-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101140991B1 (en) * 2010-09-27 2012-06-14 삼성전기주식회사 Laser navigation module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101140991B1 (en) * 2010-09-27 2012-06-14 삼성전기주식회사 Laser navigation module

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