KR102446916B1 - optical digital pen by use of light scattering having fusion-spliced optical fiber - Google Patents

Abstract

The present invention generally relates to an optical electronic pen structure. In particular, the present invention relates to an optical electronic pen based on light scattering using light-spliced optical fibers. By applying light scattering to an optical electronic pen, an electronic pen position code can be obtained even when the optical electronic pen moves in an inclined state on a display panel with a smooth surface. By performing light-spliced bonding on a light source and an optical fiber, the position code reading performance is reinforced in a light scattering structure. According to the present invention, there is an advantage in that an optical electronic pen can be used well with a display panel having a smooth surface such as a tablet PC or a laptop computer. In particular, according to the present invention, the optical electronic pen has the advantage of maintaining good position code reading performance in a light scattering structure as the light quantity loss is lowered by optical fusion bonding between a light source and an optical fiber.

Description

Optical digital pen by use of light scattering having fusion-spliced optical fiber

FIELD OF THE INVENTION The present invention relates generally to optical electronic pen structures.

In particular, by applying light scattering to the optical electronic pen, the present invention can obtain an electronic pen location code even when the optical electronic pen moves in an inclined state on a display panel with a smooth surface. It relates to an optical electronic pen based on light scattering using an optical fusion optical fiber configured to reinforce the location code reading performance.

In general, electronic pens (smart pens, touch pens) are used to display the user's handwriting on electronic devices (e.g., laptop computers, smart phones, electronic blackboards, etc.) and to save them as files. When the user writes on special paper on which the pattern) is printed, the electronic pen reads the trajectory information and wirelessly transmits it to the electronic device.

In addition, the electronic pen function is being applied to premium products such as tablet PCs and laptop computers, and writing apps such as Notability and GoodNotes are also developing, so the demand for electronic pens for electronic devices is increasing.

As an electronic pen solution, EMR (ElectroMagnetic Resonance) type stylus pen technology and electrostatic type active pen technology are generally used. However, these technologies are not only technically difficult to secure performance in 10-inch or larger displays, but also require a two-dimensional sensor array to be installed on the display panel. It has the disadvantage of being difficult to deal with.

In this background, an optical digital pen is being developed as a pen solution for electronic devices. In the optical method, only the location code is formed on the display by attaching a transparent film to which a dot pattern is applied to the display panel. It can effectively respond to form factor changes such as sliding.

[FIG. 1] is a diagram conceptually showing the internal configuration and operation method of the optical electronic pen 10, and [FIG. 2] is a block diagram showing the cooperative operation between the optical electronic pen 10 and the smart terminal device 300 .

When writing on the display panel 200 while gripping the pen body 11 , the pen tip 12 is in contact with the surface of the display panel 200 to form an operation trajectory. In this case, the display panel 200 may be made of various materials, and may be made of a general paper material, or may be made of a liquid crystal (LCD) or an organic light emitting diode (OLED) device made of glass or reinforced plastic.

The electronic pen control member 14 identifies the fact that the user is taking notes through the pressure sensing unit 13 . Since the pressure sensing unit 13 is supported backward by the pressure sensor supporting unit 13a, it is possible to sense the pressure applied to the pen tip 12 by writing. In general, when the electronic pen control member 14 identifies the fact of writing, it controls the IR light emitting unit 17 to emit light (eg, infrared (IR) light on the outer surface of the display panel 200 according to the movement of the pen tip 12 ). ) to be investigated.

The light irradiated by the IR light emitting unit 17 is reflected from the surface of the display panel 200 , and the IR light receiving unit 16 receives the reflected light. A location code 210 is printed or displayed on the display panel 200 . The location code 210 may be implemented as a dot pattern made according to a special encoding rule. A transparent film to which a transparent dot pattern absorbing an infrared light source is applied is attached to the display panel 200 , and the IR light emitting unit 17 is irradiated thereon. When the IR light receiving unit 16 collects the reflected light (IR reflected light), the location code 210 information corresponding to the movement trajectory of the pen tip 12 is also acquired. The IR light receiving unit 16 may include an IR filter unit 16a, a CMOS optical unit 16b, and an IR sensor unit 16c.

The coordinate calculator 14a of the electronic pen control member 14 analyzes the location code 210 obtained by the IR light receiving unit 16 to obtain a series of location information in which the pen tip 12 moves on the display panel 200 . acquire The location information obtained by the coordinate calculator 14a is transmitted to the terminal communication unit 310 of the smart terminal device 300 through the wireless communication unit 18 through short-range wireless communication (eg, Bluetooth).

The hardware control unit 14b of the electronic pen control member 14 controls overall hardware of the optical electronic pen 10 . For example, the hardware control unit 14b receives the pressure sensing information from the pressure sensing unit 13 , controls the turn-on or turn-off control of the IR light emitting unit 17 , and controls the operation of the IR light receiving unit 16 . .

Then, the terminal control unit 320 of the smart terminal device 300 displays the movement trajectory of the pen tip 12 on the terminal panel unit 330 based on a series of position information received through the terminal communication unit 310 . The terminal panel unit 330 generally corresponds to the display panel 200 , but is not limited thereto.

In order for the smart terminal device 300 to accurately display the contents (trajectory) written by the user in this way, the IR light receiving unit 16 of the optical electronic pen 10 can obtain the location code 210 of the display panel 200 . For this, the light irradiated from the IR light emitting unit 17 must be reflected on the display panel 200 and then transmitted to the IR light receiving unit 16 well.

[FIG. 3] is an exemplary diagram showing the state of use of the optical electronic pen 10 according to the panel material in the prior art in comparison.

[FIG. 3] (a) shows a state in which the optical electronic pen 10 is used on a panel 201 made of a rough surface material, for example, a paper material. When used for the panel 201 made of paper, whether the optical electronic pen 10 is erected or tilted, the light irradiated from the IR light emitting unit 17 is reflected from the panel 201, and then the IR light receiving unit 16 is good. can be transmitted Since the rough surface panel 201 diffusely reflects the light irradiated from the IR light emitting unit 17 , a part of the reflected light enters the IR light receiving unit 16 , and the location code 211 can be read. Therefore, the panel 201 made of paper can be used without worrying about the tilt angle of the optical electronic pen 10 .

[Fig. 3] (b) shows a state that occurs when the optical electronic pen 10 is used on a panel 202 made of a smooth surface material, for example, glass or transparent plastic material. When used for the panel 202 made of glass or transparent plastic, when the optical electronic pen 10 is tilted for a certain amount or more, the light irradiated from the IR light emitting unit 17 is reflected from the panel 202 and then the IR light receiving unit 16 ) is not sufficiently transmitted, making it difficult to read the location code 212 . The smooth surface panel 202 reflects the light emitted from the IR light emitting unit 17 symmetrically and uniformly at the angle of incidence, so when the optical electronic pen 10 is tilted, the reflected light entering the IR light receiving unit 16 is gradually reduced. , when the critical angle is exceeded, the location code 212 cannot be read.

If the optical electronic pen 10 is tilted more than a certain amount from the panel material of the smooth surface, the amount of reflected light entering the IR light receiving unit 16 falls below a threshold value, and the optical electronic pen 10 cannot operate normally. Accordingly, there was a perception that the optical electronic pen 10 is not suitable for electronic devices such as a tablet PC or a laptop computer.

Republic of Korea Patent No. 10-0408518 (Jan. 24, 2003) "Data input device for electronic pen for computer and method for measuring coordinates" Republic of Korea Patent Registration No. 10-0438846 (June 24, 2004) "Pen-type mouse device" Republic of Korea Patent Registration No. 10-2109649 (May 6, 2020) "Electronic pen coordinate correction method and portable electronic device supporting the same" Republic of Korea Patent No. 10-2213541 (2021.02.02) "Method of improving recognition rate using digital pen for pattern printing film" Republic of Korea Registered Utility Model No. 20-0485305 (2017.12.13) "Electronic pen for writing pattern film with dot pattern"

SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical electronic pen technology in general.

In particular, it is an object of the present invention to obtain an electronic pen location code even when the optical electronic pen moves in an inclined state on a smooth surface display panel by applying light scattering to the optical electronic pen, and by optically fusion bonding the light source and the optical fiber. An object of the present invention is to provide an optical electronic pen based on light scattering using a light fusion optical fiber configured to reinforce location code reading performance in a light scattering structure.

On the other hand, the problem to be solved of the present invention is not limited to these matters, and other problems to be solved can be understood from the description of the present specification.

In order to achieve the above object, an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention includes a pen body member 110 forming a body of the optical electronic pen; a pen tip member 120 connected to one end of the pen body member 110 to form a pen tip of the optical electronic pen; an IR light emitting member 140 for generating light to be irradiated to the display panel 200 on which the location code 210 is formed; IR light scattering member 150 for scattering light transmitted from the IR light emitting member with respect to the display panel in a state disposed close to the pen tip member; an optical fiber member 142 interconnecting the IR light emitting member 140 and the IR light scattering member 150; The light 140d of the IR light emitting member 140 is penetrated and irradiated into the optical fiber core of the optical fiber member 142 by the optical fusion member 143b to optically connect the IR light emitting member 140 and the optical fiber member 142 optical connector member 143; an IR light receiving member 160 for receiving the reflected light by the display panel 200 to sense the location code 210 of the display panel 200; Electronic pen control material for controlling the turn-on or turn-off of the IR light emitting member 140 and obtaining a series of position information where the pen tip member 120 moves on the display panel 200 from the reflected light received through the IR light receiving member 160 . (170); and a wireless communication member 180 for transmitting a series of location information obtained by the electronic pen control member 170 to the external smart terminal device 300 through short-range wireless communication.

In the present invention, the IR light emitting member 140 is preferably configured to include a VCSEL light emitting member 140b to focus and irradiate light into the optical fiber core of the optical fiber member 142 through the optical fusion member 143b.

In the present invention, the IR light scattering member 150 is disposed to direct the display panel 200 in proximity to the pen tip member 120 and transmits light generated from the IR light emitting member 140 in several directions with respect to the display panel 200 . a side light scattering member 151 for scattering; The pen body member 110 is bent and disposed on a portion facing the display panel 200 , and a downward light scattering member 152 , which scatters the light generated by the IR light emitting member 140 in various directions with respect to the display panel 200 , 153); In this case, the optical fiber member 142 may include a side optical fiber member 144 disposed along the pen body member 110 in the longitudinal direction to guide the light generated by the IR light emitting member 140 to the side light scattering member 151; and lower optical fiber members 145 and 146 for guiding the light generated by the IR light emitting member 140 to the lower light scattering members 152 and 153 . At this time, the optical connector member 143 separates the plurality of lights 140d of the IR light emitting member 140 by the optical fusion member 143b to the side optical fiber member 144 and the lower optical fiber member 145 and 146 respectively. It is configured to optically connect the IR light emitting member 140 and the optical fiber member 142 by being respectively recessed into the optical fiber core.

In addition, in the present invention, the IR light scattering member 150 is disposed to direct the display panel 200 in proximity to the pen tip member 120 and transmits the light generated from the IR light emitting member 140 to the display panel 200 . A side light scattering member 151 to scatter in the direction; may be provided. At this time, the optical fiber member 142 is disposed in the longitudinal direction along the pen body member 110 and guides the light generated from the IR light emitting member 140 to the side light scattering member 151. The side optical fiber member 144; be prepared At this time, in the optical electronic pen based on light scattering using the optical fusion optical fiber according to the present invention, the pen body member 110 is bent and disposed at a portion facing the display panel 200 and generated by the IR light emitting member 140 . lower light emitting members 147 and 148 for irradiating light downward toward the display panel 200 ; and lower optical fiber members 145 and 146 for guiding the light generated by the IR light emitting member 140 to the lower light emitting members 147 and 148 . In addition, the optical connector member 143 individually transmits the plurality of lights 140d of the IR light emitting member 140 by the optical fusion member 143b to the side optical fiber member 144 and the lower optical fiber member 145 and 146 respectively. It is configured to optically connect the IR light emitting member 140 and the optical fiber member 142 by being respectively recessed into the optical fiber core.

According to the present invention, there is an advantage that the optical electronic pen can be used well with a display panel having a smooth surface, such as a tablet PC or a laptop computer.

In particular, according to the present invention, the optical electronic pen has the advantage of maintaining good position code reading performance in the light scattering structure by optically fusion bonding the light source and the optical fiber to reduce the loss of light.

[FIG. 1] is a block diagram showing the internal configuration and operation of an optical electronic pen.
[Figure 2] is a block diagram showing a cooperative operation between an optical electronic pen and a smart terminal device.
[FIG. 3] is an exemplary view showing the state of use of the optical electronic pen according to the panel material in the prior art in comparison.
[Fig. 4] is an exemplary view conceptually showing an optical electronic pen based on light scattering according to the present invention.
[Fig. 5] is a block diagram showing a first embodiment of an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention.
[Fig. 6] is a block diagram showing a second embodiment of an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention.
7 is a block diagram showing a third embodiment of an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention.
[Fig. 8] is a block diagram showing a fourth embodiment of an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention.
9 is a block diagram showing a fifth embodiment of an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention.
[Fig. 10] is a block diagram showing a sixth embodiment of an optical electronic pen based on light scattering using an optical fusion optical fiber according to the present invention.
[Figure 11] is a view showing a comparison of the LED light source and the VCSEL light source in the present invention.
[Fig. 12] is a diagram showing a configuration for optically connecting a light source and an optical fiber in the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

In describing the optical electronic pen 100 according to the present invention, a detailed description of the overlapping portion with the conventional optical electronic pen 10 may be omitted.

[Fig. 4] is a block diagram conceptually showing a light scattering-based optical electronic pen 100 according to the present invention, and [Fig. 5] is a light scattering-based optical electronic pen 100 using a light-fused optical fiber according to the present invention. ) is a block diagram showing the first embodiment.

4 and 5, the optical electronic pen 100 according to the present invention has a pen body member 110, a pen tip member 120, a pressure sensor member 130, and an IR light emitting member 140. , an IR light scattering member 150 , an IR light receiving member 160 , an electronic pen control member 170 , and a wireless communication member 180 . Let's take a look at each of these components.

The pen body member 110 forms the body of the optical electronic pen 100, and preferably, may be formed to be long in the form of a bar so that the user can grip it with his or her hand.

The pen tip member 120 forms a pen tip of the optical electronic pen 100 and is disposed at one end of the pen body member 110 . The pen tip member 120 may be configured to slide according to a user's manipulation on the upper surface of the display panel 200 .

The pressure sensor member 130 is a component that detects an event in which the pen tip member 120 physically contacts the display panel 200 through pressure sensing. A portion of the pressure sensor member 130 in contact with the rear end of the pen tip member 120 is preferably formed with a recessed rounding shape to grip while matching the distal end of the pen tip member 120 . Due to this recessed rounding process, even when the user uses the pen body member 110 in a tilted state, the pressure sensor member 130 is in good contact with the rear end of the pen tip member 120, and thereby the pen tip member ( The pressure by 120 can be transmitted to the pressure sensor member 130 favorably. Here, it is preferable that the rear end of the pen tip member 120 in contact with the depressed portion of the pressure sensor member 130 is also rounded and protruded.

On the other hand, the sensor support member 131 is a component supporting the pressure sensor member 130 in response to the shape of the pressure sensor member 130 from the rear so as to maintain a good connection to the pen body member (110). The tension member 132 is a component that provides a restoring force to the pen tip member 120 so that the pen tip member 120 protrudes and protrudes inside and outside the pen body member 110 , and may be formed of, for example, a spring.

The IR light emitting member 140 is a component that generates light (eg, IR light) to be irradiated to the display panel 200 .

The IR light scattering member 150 is disposed close to the pen tip member 120 to direct the display panel 200 , and irregularly scatters light generated from the IR light emitting member 140 in various directions with respect to the display panel 200 . It is a scattering component. In [FIG. 5], the light generated by the IR light emitting member 140 is guided to the vicinity of the pen tip member 120 through the optical fiber member 142, and then is shown in the form of being scattered while passing through the IR light scattering member 150, The present invention is not limited thereto. Depending on the embodiment, the light generated by the IR light emitting member 140 may be scattered while being reflected by the IR light scattering member 150 .

The IR light scattering member 150 is preferably disposed at an angle with respect to the longitudinal direction of the pen tip member 120 so as to be close to the pen tip member 120 to direct the display panel 200 . For installation of the IR light scattering member 150, the end of the pen tip member 120 may be bent as shown in [FIG. 5].

As a result, light is irradiated from the IR light scattering member 150 in various directions. Since the smooth surfaces of the display panels 200 and 202 reflect light symmetrically to the incident angle, the reflected light from the display panel 200 is also formed in various directions. Accordingly, a certain amount of the reflected light may be directed toward the IR light receiving member 160 as shown on the right side of FIG. 4 .

The IR light receiving member 160 is a component that senses the location code 210 of the display panel 200 by receiving reflected light coming into its effective light receiving area (Field of View, FOV). For convenience of explanation, the FOV of the IR light receiving member 160 is specified. The IR light receiving member 160 may include an IR filter member 161 , a CMOS optical member 162 , and an IR sensor member 163 . Referring to FIG. 4 , whether the electronic pen 100 is used upright or tilted, the reflected light from the display panel 212 is incident into the FOV of the IR light receiving member 160 , and accordingly, the position code 212 is reading is possible.

The electronic pen control member 170 performs overall operation control for the optical electronic pen 100 in the present invention. For example, it may be recognized that the pen tip member 120 is moving on the display panel 200 based on the pressure information transmitted from the pressure sensor member 130 . In addition, the electronic pen control member 170 turns on the IR light emitting member 140 based on the pressure information or other determination criteria. In addition, the electronic pen control member 170 receives a series of position information (coordinate information) in which the pen tip member 120 moves on the display panel 200 based on the position code 212 read by the IR light receiving member 160 . Acquired and transmitted to the wireless communication member (180).

The wireless communication member 180 transmits the location information provided from the electronic pen control member 170 to the external smart terminal device 300 through short-range wireless communication (eg, Bluetooth).

5, in the optical electronic pen 100 according to the first embodiment of the present invention, the IR light emitting member 140 and the IR light scattering member 150 are installed to be spaced apart from each other, and these (140, 150) An optical fiber member 142 was installed in the liver. The electronic pen control member 170 and the IR light emitting member 140 are installed in the middle portion of the pen body member 110 spaced apart from the pen tip member 120 , and the IR light scattering member 150 is located on the side of the pen tip member 120 . It was installed on the corresponding pen body member (110).

When the optical electronic pen 100 is designed to be slim, it is better to install all of the pen tip member 120, the IR light emitting member 140, and the IR light scattering member 150 at the end of the pen body member 110. It is difficult. In addition, even if it is not a slim design, disposing the pen tip member 120, the IR light emitting member 140, and the IR light scattering member 150 at the end of the pen body member 110 is not preferable in terms of operability according to weight distribution. .

Accordingly, the IR light emitting member 140 was disposed in the middle portion of the pen body member 110 spaced apart from the pen tip member 120 . The optical fiber member 142 is a component for guiding light between the IR light emitting member 140 and the IR light scattering member 150 installed to be spaced apart from each other. That is, the optical fiber member 142 is disposed in the longitudinal direction along the pen body member 110 to guide the light generated by the IR light emitting member 140 to the IR light scattering member 150 .

In FIG. 5 , the optical fiber member 142 guides light toward the rear surface of the IR light scattering member 150 to scatter the light while passing through the IR light scattering member 150 . Depending on the embodiment, the optical fiber member 142 may guide the light toward the front of the IR light scattering member 150 so that the light is scattered while being reflected from the IR light scattering member 150 .

The optical connector member 143 is a component that optically connects the IR light emitting member 140 and the optical fiber member 142. For the configuration of the optical connector member 143, refer to [Fig. 11] and [Fig. 12]. will be described later.

[Fig. 6] is a block diagram showing a second embodiment of the optical electronic pen 100 based on light scattering using an optical fusion optical fiber according to the present invention.

In the optical electronic pen 100 according to the second embodiment of the present invention, the pen tip member 120 and the IR light scattering member 150 are formed in a single package, and they linearly move with respect to the pen body member 110 as an integral part. composed.

As described above with reference to [Fig. 5], the IR light emitting member 140 is disposed in the middle of the pen body member 110 spaced apart from the pen tip member 120, and is installed to be spaced apart from each other through the optical fiber member 142. It is configured to guide light between the IR light emitting member 140 and the IR light scattering member 150 .

The optical connector member 143 is a component that optically connects the IR light emitting member 140 and the optical fiber member 142. For the configuration of the optical connector member 143, refer to [Fig. 11] and [Fig. 12]. will be described later.

7 and 8 are block diagrams respectively showing a third embodiment and a fourth embodiment of the optical electronic pen 100 based on light scattering using the optical fusion optical fiber according to the present invention. The third and fourth embodiments of [Fig. 7] and [Fig. 8] are the improved configurations of the first and second embodiments of [Fig. 5] and [Fig. 6], respectively. Hereinafter, the improved parts from the first and second embodiments will be described.

The optical electronic pen 100 according to the third and fourth embodiments of the present invention includes a side light scattering member 151 and a downward light scattering member 152 and 153 as an IR light scattering member, and a side optical fiber member 144 as an optical fiber member and It differs from the first and second embodiments in that the lower optical fiber members 145 and 146 are provided.

The side light scattering member 151 is a component that is disposed to direct the display panel 200 in proximity to the pen tip member 120 and scatters light generated by the IR light emitting member 140 in various directions with respect to the display panel 200 . to be. The side light scattering member 151 is installed on the pen body member 110 corresponding to the side of the pen tip member 120 in the third embodiment, and is formed in a single package form with the pen tip member 120 in the fourth embodiment.

The lower light scattering members 152 and 153 are disposed at a portion where the pen body member 110 is bent to face the display panel 200 , and the light generated from the IR light emitting member 140 is applied to the display panel 200 . It is a component that scatters in multiple directions.

In this case, the side light scattering member 151 is disposed obliquely to face the display panel 200 , and the lower light scattering members 152 and 153 are disposed to face the display panel 200 in the front.

The side light scattering member 151 is configured to secure the amount of reflected light transmitted to the FOV of the IR light receiving member 160 when the user uses the optical electronic pen 100 at an angle to the display panel 200 having a smooth surface. to be. However, in the configuration in which light is irradiated only through the side light scattering member 151, when the user uses the optical electronic pen 100 standing up on the display panel 200 having a smooth surface, it is transmitted to the FOV of the IR light receiving member 160 There is a disadvantage in that it is difficult to secure the amount of reflected light.

In consideration of this point, in the third and fourth embodiments, the IR light receiving member ( 160) to secure the amount of reflected light transmitted to the FOV.

The side optical fiber member 144 is a component that guides the light generated by the IR light emitting member 140 to the side light scattering member 151 . As the side light scattering member 151 is disposed close to the pen tip member 120 , the side optical fiber member 144 is disposed in the longitudinal direction from the IR light emitting member 140 along the pen body member 110 .

The lower optical fiber members 145 and 146 are configured to guide the light generated by the IR light emitting member 140 to the lower light scattering members 152 and 153 .

The optical connector member 143 is a component that optically connects the IR light emitting member 140, the side optical fiber member 144, and the lower optical fiber members 145 and 146. For the configuration of the optical connector member 143, [Fig. 11] and [Fig. 12] will be described later.

[Fig. 9] and [Fig. 10] are block diagrams respectively showing a fifth embodiment and a sixth embodiment of the optical electronic pen 100 based on light scattering using the optical fusion optical fiber according to the present invention. The fifth and sixth embodiments of FIGS. 9 and 10 are configurations modified from the third and fourth embodiments of FIGS. 7 and 8, respectively. Hereinafter, portions modified from the third and fourth embodiments will be described.

The optical electronic pen 100 according to the fifth and sixth embodiments of the present invention is different from the third and fourth embodiments in that the lower light emitting members 147 and 148 are provided instead of the lower light scattering members 152 and 153. have

The lower light emitting members 147 and 148 are disposed at a portion where the pen body member 110 is bent to face the display panel 200 and emits light generated from the IR light emitting member 140 downward toward the display panel 200 . component to be investigated. When a user uses the optical electronic pen 100 standing up on the display panel 200 having a smooth surface, it is considered that the recognition rate can be increased by irradiating the light without scattering the light. The lower light emission members 147 and 148 may be implemented as light emission holes or may be implemented with transparent plastic.

The optical connector member 143 is a component that optically connects the IR light emitting member 140, the side optical fiber member 144, and the lower optical fiber members 145 and 146. For the configuration of the optical connector member 143, [Fig. 11] and [Fig. 12] will be described later.

With reference to [Fig. 4] to [Fig. 10] above, six embodiments of the optical electronic pen based on light scattering using the optical fusion optical fiber according to the present invention have been described. Hereinafter, with reference to [Fig. 11] and [Fig. 12], the configuration of the IR light emitting member 140 and the optical connector member for optically connecting the IR light emitting member 140 and the optical fiber members (142, 144, 145, 146). (143) is described.

[Fig. 11] is a view showing a comparison between the LED light source 140a and the VCSEL light source 140b that can be adopted as the IR light emitting member 140 in the present invention.

[FIG. 11] (a) is an exemplary view using the LED light emitting member 140a as the IR light emitting member 140, and the IR LED light source 140a transmits light to the optical fiber member 142 because the irradiation angle is widely spread. In the process, the amount of light is lost.

[FIG. 11] (b) is an exemplary view using the VCSEL light emitting member 140b as the IR light emitting member 140 . A VCSEL (Vertical-Cavity Surface-Emitting Laser) is a semiconductor laser diode device that emits a laser in a direction perpendicular to the upper surface. The VCSEL light source 140b may focus the light into the optical fiber core of the optical fiber member 142 because the irradiation angle is concentrated.

12 is a view showing the configuration of optically connecting the IR light emitting member 140 and the optical fiber members 142, 144, 145, and 146 through the optical connector member 143 in the present invention.

[Fig. 12] (a) is an exemplary view in which the LED light emitting member 140a and the optical fiber member 142 are connected by a mirror connector 143a. The LED light source 140a has a wide irradiation angle so that the LED light 140c is wider than the optical fiber member 142 . Accordingly, the mirror connector 143a is formed in the form of enclosing the LED light emitting member 140a and the optical fiber member 142 so that light can be transmitted to the optical fiber member 142 .

[Fig. 12] (b) is an exemplary view in which the VCSEL light emitting member 140b and the optical fiber member 142 are connected by the optical fusion member 143b. Since the VCSEL light source 140b has good straightness and is intensively formed, the VCSEL light 140d can be focused and irradiated into the optical fiber core of the optical fiber member 142 . Here, the VCSEL light emitting member 140b and the optical fiber member 142 were directly connected by optical fusion without an intermediate connecting member. Fusion splicing is a technology that combines two optical materials using arc discharge heat, and the light loss rate due to optical fusion is less than 0.1 dB.

In the method of the mirror connector 143a of FIG. 12 (a), an air gap is formed according to the coupling structure to generate reflection noise, and thus light loss is inevitable to some extent. On the other hand, in [FIG. 12] (b), the VCSEL light source 140b irradiates the light 140d into the optical fiber core of the optical fiber member 142, and the VCSEL light source 140b and the optical fiber member by the optical fusion member 143b. By direct coupling (142), the light loss is very small.

[Fig. 12] (c) is an exemplary view in which the VCSEL light emitting member 140b and the plurality of optical fiber members 142, 144, 145, and 146 are connected by the optical fusion member 143b. In this case, the plurality of lights 140d of the IR light emitting member 140 are individually impregnated into the respective optical fiber cores of the side optical fiber member 144 and the lower optical fiber member 145 and 146 by the optical fusion member 143b. to optically connect the IR light emitting member 140 and the optical fiber member 142 . However, [Fig. 12] (c) is provided by way of example and other types of embodiments are possible.

5 to 10, the light generated by the IR light emitting member 140 is guided through the optical fiber members 142, 144, 145, and 146, and the IR light scattering member 150, 151, 152, 153) and the lower light emitting members 147 and 148 are spread widely on the display panel 200 . In order to effectively cover such a wide area, it is important that the light generated by the IR light emitting member 140 is not lost in an intermediate process, which is directly related to the performance of the optical electronic pen 100 .

Meanwhile, the present invention can be implemented in the form of computer-readable codes on a computer-readable non-volatile recording medium. Various types of storage devices exist as such non-volatile recording media. For example, hard disks, SSDs, CD-ROMs, NAS, magnetic tapes, web disks, cloud disks, etc. A form in which it can be implemented and executed can also be implemented. In addition, the present invention may be implemented in the form of a computer program stored in a medium to execute a specific procedure in combination with hardware.

100: optical electronic pen
110: no pen body
120: no pen tip
130: no pressure sensor
131: sensor support member
132: absence of tension
140: IR light emitting member
140a: LED light emitting member
140b: VCSEL light emitting member
141: IR wiring member
142: optical fiber member
143: optical connector member
143a : mirror connector
143b: optical fusion member
144: side optical fiber member
145, 146: lower optical fiber member
147, 148: lower light emitting member
150: no IR light scattering
151: absence of lateral light scattering
152, 153: Absence of downward light scattering
160: IR light receiving member
161: IR filter member
162: CMOS optical member
163: IR sensor member
170: electronic pen control material
180: wireless communication member
190: no battery
200: display panel
210: location code
300: smart terminal device
310: terminal communication unit
320: terminal control unit
330: terminal panel unit

Claims (4)

Pen body member 110 forming the body of the optical electronic pen;
a pen tip member 120 connected to one end of the pen body member 110 to form a pen tip of the optical electronic pen;
an IR light emitting member 140 for generating light to be irradiated to the display panel 200 on which the location code 210 is formed;
an IR light scattering member 150 for scattering the light transmitted from the IR light emitting member with respect to the display panel while being disposed close to the pen tip member 120;
an optical fiber member 142 interconnecting the IR light emitting member 140 and the IR light scattering member 150;
The IR light emitting member 140 and the optical fiber member 142 are irradiated by penetrating and irradiating the light 140d of the IR light emitting member 140 into the optical fiber core of the optical fiber member 142 by the optical fusion member 143b. an optical connector member 143 for optically connecting;
an IR light receiving member 160 that receives the reflected light by the display panel 200 and senses the location code 210 of the display panel 200;
Electronic that controls turn-on or turn-off of the IR light emitting member 140 and obtains a series of positional information in which the pen tip member 120 moves on the display panel 200 from the reflected light received through the IR light receiving member 160 . pen control member 170;
a wireless communication member 180 for transmitting the series of location information obtained by the electronic pen control member 170 to an external smart terminal device 300 through short-range wireless communication;
As an optical electronic pen based on light scattering using a light fusion optical fiber comprising:
The IR light scattering member 150,
a side light scattering member 151 disposed close to the pen tip member 120 to face the display panel 200 and scattering the light generated by the IR light emitting member 140 in various directions with respect to the display panel 200;
A downward light scattering member ( 152, 153);
consists of,
The optical fiber member 142,
a side optical fiber member 144 disposed along the pen body member 110 in the longitudinal direction to guide the light generated by the IR light emitting member 140 to the side light scattering member 151;
lower optical fiber members 145 and 146 for guiding the light generated by the IR light emitting member 140 to the lower light scattering members 152 and 153;
consists of,
The optical connector member 143 separates the plurality of lights 140d of the IR light emitting member 140 by the optical fusion member 143b to the side optical fiber member 144 and the lower optical fiber member 145 and 146 respectively. An optical electronic pen based on light scattering using an optical fusion optical fiber, characterized in that it is configured to optically connect the IR light emitting member 140 and the optical fiber member 142 by being respectively impregnated into the corresponding optical fiber core of a.
Pen body member 110 forming the body of the optical electronic pen;
a pen tip member 120 connected to one end of the pen body member 110 to form a pen tip of the optical electronic pen;
an IR light emitting member 140 for generating light to be irradiated to the display panel 200 on which the location code 210 is formed;
an IR light scattering member 150 for scattering the light transmitted from the IR light emitting member with respect to the display panel while being disposed close to the pen tip member 120;
an optical fiber member 142 interconnecting the IR light emitting member 140 and the IR light scattering member 150;
A lower light emitting member ( 147, 148);
lower optical fiber members 145 and 146 for guiding the light generated by the IR light emitting member 140 to the lower light emitting members 147 and 148;
The IR light emitting member 140 and the optical fiber member 142 are irradiated by penetrating and irradiating the light 140d of the IR light emitting member 140 into the optical fiber core of the optical fiber member 142 by the optical fusion member 143b. an optical connector member 143 for optically connecting;
an IR light receiving member 160 that receives the reflected light by the display panel 200 and senses the location code 210 of the display panel 200;
Electronic that controls turn-on or turn-off of the IR light emitting member 140 and obtains a series of positional information in which the pen tip member 120 moves on the display panel 200 from the reflected light received through the IR light receiving member 160 . pen control member 170;
a wireless communication member 180 for transmitting the series of location information obtained by the electronic pen control member 170 to an external smart terminal device 300 through short-range wireless communication;
As an optical electronic pen based on light scattering using a light fusion optical fiber comprising:
The IR light scattering member 150,
A side light scattering member 151 disposed to direct the display panel 200 close to the pen tip member 120 and scattering the light generated by the IR light emitting member 140 in various directions with respect to the display panel 200. provided,
The optical fiber member 142,
a side optical fiber member 144 disposed along the pen body member 110 in the longitudinal direction to guide the light generated by the IR light emitting member 140 to the side light scattering member 151;
to provide
The optical connector member 143 separates the plurality of lights 140d of the IR light emitting member 140 by the optical fusion member 143b to the side optical fiber member 144 and the lower optical fiber member 145 and 146 respectively. An optical electronic pen based on light scattering using an optical fusion optical fiber, characterized in that it is configured to optically connect the IR light emitting member 140 and the optical fiber member 142 by being respectively impregnated into the corresponding optical fiber core of a.
The method according to claim 1 or 2,
The IR light emitting member 140 includes a VCSEL light emitting member 140b and is configured to focus and irradiate light into the optical fiber core of the optical fiber member 142 through the optical fusion member 143b. Optical electronic pen based on light scattering using optical fiber. delete

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