KR100495688B1 - Pen type optical mouse - Google Patents

Abstract

A pen type optical mouse is disclosed. The apparatus of the present invention can provide an optical system regardless of the optical transmission path and distance by installing an optical fiber in the light irradiation path and a bundle optical fiber in the path of the reflected light reflected from the reflecting surface, and by implementing the image transmission characteristics, Can transmit an image to an image sensor; When the image is input to the image sensor from the tip of the optical tip, which is in direct contact with the reflective surface, the position or focal length of the mouse pointer changes even when the angle of the pen-shaped optical mouse and the reflective surface changes, so that the pen-shaped optical mouse is used. Higher precision; By installing a ball with a specific pattern at the end of the mouse body and using the light reflected from the mouse to determine the direction of movement of the mouse, the optical mouse can be used freely regardless of the angle between the reflective surface and the optical mouse. do.

Description

Pen type optical mouse

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pen-type optical mouse, and in particular, an optical system irrespective of the light transmission path and distance is employed, and relates to a pen-type optical mouse that can be used regardless of the angle of the optical mouse and the reflecting surface.

A mouse is the most widely used computer input device with a keyboard. Recently, the shape and structure of the existing hemispherical dome type optical mouse or ball mouse has been raised many problems, and in order to improve this, efforts have been made to make the mouse shape familiar to humans. have.

1 is a schematic diagram for explaining an operation concept of a conventional pen-type optical mouse.

Referring to FIG. 1, light incident from the light emitting unit is reflected on the reflective surface, and the reflected light is sequentially inputted to the image sensor through the condenser lens and the image forming unit to form an image. At this time, the mouse is provided with a button (button) for selecting various functions, the conventional pen-type optical mouse is a button is clicked when the end of the condenser lens is pressed. However, this pressing operation changes the focal length of the condenser lens or the imaging unit, so that the image formed on the image sensor cannot maintain an optimal state. Therefore, in the conventional pen-type optical mouse, it is common to keep the focal length long in order to maintain an image recognizable state to some extent. In this case, many limitations in structure and performance are involved in the design of the optical system. In particular, it is impossible to place the function setting button of the mouse at a desired position due to the position of the image sensor or the limitation of the space occupied by the optical system. In order to compensate for this, a pressure sensor may be used as a substitute for a function button, but in this case, there is a lot of inconvenience because the user must determine whether the user is pressed depending on the sense. In addition, in consideration of the convenience of use, the pen-type optical mouse should maintain a shape and size (thickness) that are easy for a user to hold. However, in the pen-type structure using only a lens like a conventional pen-type optical mouse, it is difficult to adjust the size (thickness) and shape to a level required by a user.

Accordingly, an object of the present invention is to provide an optical pen mouse that can improve the disadvantages of using a conventional pen-type optical mouse by applying a new optical system.

Another object of the present invention is to provide a pen-type optical mouse that can be used freely regardless of the angle between the optical mouse and the reflective surface.

Pen-shaped optical mouse according to an embodiment of the present invention for achieving the above technical problem: a pen-shaped body; A transparent optical tip installed at one end of the body; A light emitting unit, an optical fiber for guiding light emitted from the light emitting unit, and a prism installed at an output end of the optical fiber, the reflecting surface being installed in the body and positioned outside the body through the optical tip. An illumination device for irradiating light to the light; A condenser lens installed in the body such that the light reflected from the reflective surface passes therethrough; A bundle optical fiber for guiding light passing through the condenser lens; An imaging unit configured to receive light from the bundle optical fiber and to form an image; An image sensor which receives light from the image forming unit and converts the light into an electrical signal and outputs the electrical signal; And a microcomputer for analyzing the pattern information of the surface of the reflection surface input to the image sensor using the electrical signal output from the image sensor, reading a moving direction and a moving distance of the mouse, and transmitting the same to a computer main body. .

Pen-shaped optical mouse according to another embodiment of the present invention for achieving the above technical problem: a pen-shaped body; A transparent optical tip installed at one end of the body; a light emitting unit, an optical fiber for guiding light emitted from the light emitting unit, and a prism installed at an output end of the optical fiber, which is installed in the body, the outside of the body An illumination device for irradiating light to the vicinity of the contact of the optical tip from the reflection surface located in the; A condenser lens installed inside the optical tip such that light reflected from the reflective surface passes through the optical tip; A bundle optical fiber for guiding light passing through the condenser lens; An imaging unit configured to receive light from the bundle optical fiber and to form an image; An image sensor which receives light from the image forming unit and converts the light into an electrical signal and outputs the electrical signal; And a microcomputer for analyzing the pattern information of the surface of the reflection surface input to the image sensor using the electrical signal output from the image sensor, reading a moving direction and a moving distance of the mouse, and transmitting the same to a computer main body. .

According to still another aspect of the present invention, there is provided a pen-type optical mouse comprising: a pen-type mouse body; A ball having a pattern on the surface thereof rotatably installed at one end of the mouse body; An illumination device including a light emitting part, an optical fiber for guiding light emitted from the light emitting part, and a prism installed at an output end of the optical fiber, the illumination device being installed in the body to irradiate light to the ball; A condenser lens installed in the body such that the light reflected from the ball passes therethrough; A bundle optical fiber for guiding light passing through the condenser lens; An imaging unit configured to receive light from the bundle optical fiber and to form an image; An image sensor which receives light from the image forming unit and converts the light into an electrical signal and outputs the electrical signal; And a microcomputer for analyzing the pattern information of the surface of the ball input to the image sensor using the electrical signal output from the image sensor, reading a moving direction and a moving distance of the mouse and transmitting the same to the computer main body.

In each of the above examples, the light emitting portion may consist of an LED.

In each of the above-described examples, there is a plurality of holes penetrating through the side, the wheel is axially coupled so as to be free to rotate is installed so that a portion protrudes out through a hole formed in the side of the body; A light emitting unit installed in the body to irradiate light to the wheel; The wheel button sensor is configured to include a light sensor for receiving the light passing through each of the holes of the wheel from the light emitted from the light emitting unit to grasp the rotation direction and angle of rotation of the wheel. Characterized in that it is provided. Alternatively, the transparent button is installed on the side wall of the body so that the finger contacts the outer surface; A light emitting unit installed in the body to irradiate light to a finger contacting the transparent button through the transparent button; An optical fiber that is reflected from the finger and guides the reflected light passing through the transparent button; It is characterized in that the contact button sensor further comprises a position sensor for detecting the movement of the finger with the optical information provided through the optical fiber to perform a scroll function.

In each of the above examples, a first click button is installed to detect and click when the optical tip is pressed; And a second click button installed on the outer surface of the body to be clicked by a finger press. At this time, there are a plurality of holes penetrating through the side, when pressed to move inwardly into the body, and when the release is released to the outside of the body by the elastic force to be restored to the original state, the rotation is freely axially coupled to the A wheel which is installed to protrude outward through a drilling hole formed in a side of the body; A light emitting unit installed in the body to irradiate light to the wheel; The wheel button sensor is configured to include a light sensor for receiving the light passing through each of the holes of the wheel from the light emitted from the light emitting unit to grasp the rotation direction and angle of rotation of the wheel. And the first click button is installed to be clicked when the wheel is pressed. Or it is installed so that the finger is in contact with the outer surface, when pressed to move inwardly into the body and when the release is released is pushed back to the outside of the body by elastic force to be restored to its original state and the transparent button is installed on the side wall ; A light emitting unit installed in the body to irradiate light to a finger contacting the transparent button through the transparent button; An optical fiber that is reflected from the finger and guides the reflected light passing through the transparent button; The touch button sensor further comprises a position sensor which detects the movement of a finger with the optical information provided through the optical fiber and performs a scroll function. The first click button is clicked when the transparent button is pressed. It is characterized in that it is installed.

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

2A to 2F are diagrams for describing a pen-type optical mouse according to a first embodiment of the present invention.

2A to 2C, the pen-type optical mouse according to the first embodiment of the present invention includes a body 110, an optical tip 120 installed in the body 110, and click buttons 131 and 132, respectively. ), Wheel button sensor 140 or contact button sensor, lighting device 150, condenser lens 161, bundle optical fiber 162, imaging unit 163, image sensor 170 And a microcomputer (not shown) is provided.

The mouse body 110 has a pen shape, which is a human expression tool most familiar to humans. By using such a pen shape, the mouse according to the present invention has no fatigue and is easy to carry even for a long time, and is easy to use even in a narrow space, and has excellent functions such as precise work or handwritten expression.

The optical tip 120 is made of a transparent body, when the optical tip 120 is pressed against the reflective surface, the optical tip 120 moves inward to the inside of the mouse body 110. When the optical tip 120 is pressed, the optical tip 120 is moved outward by the elastic force of the spring. It will pop back up and be installed to restore its original condition. And, it is fixed by the holder (not shown) so that there is no shaking from side to side.

The first click button 131 corresponding to the left click button of the conventional mouse is installed to be clicked when the optical tip 120 moves inwardly into the body 110. The second click button 132 corresponding to the right click button of the conventional mouse is installed on the outer surface of the body 110 to be clicked by a finger press. The pressure sensor may be installed instead of the spring to detect when the optical tip 120 is pressed to allow the first click button 131 to be clicked.

Referring to FIG. 2D in conjunction with FIG. 2A, the wheel button sensor 140 includes a wheel 141, a light emitter 142, and an optical sensor 143 to perform a scroll function.

The wheel 141 has a plurality of holes penetrating through the side, and is axially coupled so as to be freely rotated so that a part of the wheel 141 protrudes out through a hole formed in the side of the mouse body 110. The light emitting unit 142 is installed in the mouse body 110 to irradiate light to the wheel 141. The optical sensor 143 receives the light passing through each of the holes formed in the wheel 141 among the light emitted from the light emitting unit 142 and converts the light signals into electrical signals having different phase differences, thereby rotating the wheel 141 and Know the angle of rotation. At this time, the wheel 141 is also rotated, but when pressed to move inwardly into the mouse body 110, and when the release is released to the body 110 by the elastic force to come back to restore to the original state. In this case, when the wheel 141 is pressed to move inwardly into the body 110, the first click button 131 is clicked so that a function corresponding to the left click button of a normal mouse can be operated. .

On the other hand, the wheel button sensor 140 is limited to downsize the wheel 141, which is a major obstacle to downsizing the pen-shaped optical mouse, and thus, a touch button that performs the scroll function of the wheel button sensor 140. A sensor can be employed.

Referring to FIG. 2E in conjunction with FIG. 2A, the touch button sensor 180 includes a transparent button 181, a light emitting unit 182, an optical fiber (not shown), and a position sensor 183.

The transparent button 181 is installed on the side wall of the mouse body 110 so that the finger can contact the outer surface. The light emitting unit 182 is installed in the mouse body 110 to irradiate light to a finger that is in contact with the transparent button 181 through the transparent button 181. The optical fiber is reflected from the finger and guides the reflected light passing through the transparent button 181. The position sensor 183 detects the movement of a finger with the optical information provided through the optical fiber. At this time, the transparent button 181 is installed to move to the inside of the mouse body 110 when pressed, and to be released back to the original state by jumping back out of the body 110 by the elastic force when the pressing is released. In this case, when the transparent button 181 is pressed to move inwardly into the body 110, the first click button 131 is clicked so that a function corresponding to the left click button of a normal mouse can be operated. have.

Since the finger has a fingerprint, the light reflected through the finger has a specific pulse shape. That is, since the specific pulses appear in a time difference according to the direction in which the finger moves, the touch button sensor 180 may detect this to determine the scroll direction of the finger.

The first click button 131, the second click button 132, the wheel 141, and the transparent button 181 operate in the same manner as a conventional mouse. That is, pressing the optical tip 120 to the reflective surface or using a finger to press the wheel 141 or the transparent button 181 to select an icon, etc., and press the second click button 132 to bring up a pop-up menu window Allows you to perform the functions in the menu. Of course, the screen may be moved up and down using the wheel 141 or the transparent button 181.

Referring again to FIGS. 2A to 2C, the lighting apparatus 150 emits light through the light emitting unit 151 and the light emitting unit 151 to irradiate light to a reflective surface positioned outside the mouse body 110 through the optical tip 120. It consists of an optical fiber 152 for guiding the light emitted from the unit 151 and a prism 153 provided at an output end of the optical fiber 152. The light emitting unit 151 may be a light emitting diode (LED) or an electro luminescent (EL) device.

The optical mouse detects the irregularities of the reflective surface by reading reflected light in which light irradiated at a predetermined angle from the illumination device 150 is irregularly reflected by the irregularities of the reflective surface and detects the irregularities of the reflective surface and measures the movement direction and displacement of the irregularities pattern. The mouse's movement direction and distance.

FIG. 2F is a schematic view showing a case where a pen-type optical mouse is used with a surface of a general copy paper or a desk as a reflective surface. FIG. 2F is a case where the incident angle of light incident on the reflective surface is large, and FIG. ) Denotes a case where the incident angle of light incident on the reflective surface is small.

Referring to FIG. 2F, when the incident angle is large, light is reflected by a plurality of minute irregularities formed on the surface of the copy paper or the desk, and thus the pattern shape of the irregularities cannot be accurately distinguished by the image sensor. However, when the incident angle is small, since the incident area of light is narrower than when the incident angle is large, the number of irregularities reflecting the light can be reduced, so that the pattern of the irregularities can be distinguished more accurately in the image sensor.

Therefore, in the pen-type optical mouse according to the embodiment of the present invention, when the angle between the pen-type optical mouse and the reflecting surface is 40 ° to 70 °, the light irradiated by the illumination device 150 is half at an incidence angle of 14 ° to 21 °. The lighting device 150 is installed to be incident on the slope.

Referring again to FIGS. 2A to 2C, the light irradiated onto the reflecting surface is reflected from the reflecting surface to enter the mouse body 110, and the condenser lens 161, the bundle optical fiber 162, and the image forming unit 163 are provided. The image sensor 170 is sequentially passed through.

The condenser lens 161 allows the light coming into the mouse body 110 to be focused on the bundled optical fiber 162. The bundle optical fiber 162 transmits the light passing through the condenser lens 161 to the image forming unit 163 without distortion by the image guiding characteristic of the bundle optical fiber 162 itself. The image forming unit 163 is formed of an image forming lens and forms an image such that the light emitted from the bundle optical fiber 162 is formed in the image sensor 170 in the correct image. At this time, the bundle optical fiber 162 is installed so that both ends are fixed to the condenser lens 161 and the image forming unit 163, respectively, using a fixing stand for stably guiding the light.

As described in the related art, the conventional optical mouse has a problem in measuring a coordinate value of a cursor since the distance from the reflective surface to the image sensor is changed when the first click button is clicked by pressing the optical tip. However, in the case of the present invention, when the optical tip 120 is pressed, the linear distance from the reflective surface to the image sensor 170 changes, but the bundle optical fiber 162 is flexible and bent, but the length of the bundle optical fiber 162 itself. Since is not changed, the distance from the reflective surface to the image sensor 170 is not affected. Therefore, the coordinate value of the cursor can be measured accurately.

The image sensor 170 receives light emitted through the image forming unit 163, converts the light into an electrical signal, and outputs the converted light. As the image sensor 170, a CMOS, a charge coupled device (CCD), or the like may be used, and in the case of using a CMOS sensor, the CMOS sensor may be packaged in a single chip together with a microcomputer circuit. The microcomputer (not shown) analyzes the pattern information on the surface of the reflection surface input to the image sensor 170 by using the electrical signal output from the image sensor 170, reads the moving direction and the distance of the mouse, and reads the computer body ( (Not shown).

On the other hand, the image forming unit 163 and the image sensor 170 may be provided so that their optical axis is in line with the size and thickness of the optical mouse, and the image input unit 163 consists of a mirror and an image forming lens. The image sensor 170 may be installed to be refracted and output, and the refracted light may be input.

Example 2

3 is a schematic view for explaining a pen-type optical mouse according to a second embodiment of the present invention.

The pen-type optical mouse according to the second embodiment of the present invention includes a body, an optical tip installed in the body, click buttons, a wheel button sensor or a touch button sensor, an illumination device, a condenser lens, and a bundle. An optical fiber, an imaging unit, an image sensor, and a microcomputer are provided. Comparing the present embodiment with the first embodiment described above, only the installation positions of the illumination device and the condenser lens are different, and the functions of the other components are the same, and thus the repeated description thereof will be omitted.

Referring to FIG. 3 in conjunction with FIG. 2A, the illumination device 150 of the pen-type optical mouse according to the present embodiment irradiates light directly onto the reflective surface without passing through the optical tip 120, and the condenser lens 161 is half The light reflected from the slope is installed inside the optical tip 120 to pass through it through the optical tip 120. In this case, when the angle between the pen-shaped optical mouse and the reflective surface is 40 ° to 70 °, the illumination device 150 is installed so that the light irradiated from the light emitting unit 151 is incident on the reflective surface at an angle of incidence of 14 ° to 21 °. One end of the bundle optical fiber 162 is installed such that both ends are fixed to the condenser lens 161 and the image forming unit 163 by using a fixing stand or the like.

In this case, since the image is input to the image sensor 170 from the end of the optical tip 120, which is a part in direct contact with the reflective surface, so long as there is no movement such as shaking of the tip of the optical tip 120, the pen-type optical mouse Even if the angle of the reflecting surface changes to some degree, the position of the mouse pointer and the focal length do not change, and thus the accuracy in using the pen-type optical mouse can be further increased.

Example 3

4 is a schematic view for explaining a pen-type optical mouse according to a third embodiment of the present invention.

The pen-type optical mouse according to the third embodiment of the present invention includes a body, a ball installed in the body, click buttons, a wheel button sensor or a touch button sensor, an illumination device, a condenser lens, and a bundle optical fiber. And an image forming unit, an image sensor, and a microcomputer. Compared to the first embodiment described above, the embodiment is provided with a ball instead of an optical tip, and accordingly, only the light irradiation area from the illumination device and the installation position of the condenser lens are different, but the functions of other components are different. Are the same, so repeated descriptions are omitted.

Referring to FIG. 4 in conjunction with FIG. 2A, the ball 210 has a pattern formed on its surface and is rotatably installed at one end of the mouse body 110. That is, the ball 210 is installed to be rotatable at the position where the optical tip 120 of the optical mouse according to the first embodiment is installed.

The lighting device 150 is installed to irradiate light to the ball 210. As in the first embodiment, the light emitting unit 151 includes a light emitting unit 151, an optical fiber 152 for guiding light emitted from the light emitting unit 151, and a prism 153 provided at an output end of the optical fiber 152.

The condenser lens 161 is installed so that light reflected from the surface of the ball 210 passes through the condenser lens, and one end of the bundle optical fiber 162 is fixed to the ends of the condenser lens 161 and the image forming unit 163 by using a stator or the like. Are fixed to each).

In this case, when the ball 210 having a specific pattern is installed at the end of the mouse body 110, when the pen-shaped optical mouse moves in contact with the floor, the ball 210 rotates and the image sensor 170 collects a condenser lens ( The movement direction of the mouse can be known by recognizing a pattern formed on the surface of the ball 210 transmitted through the 161, the bundle optical fiber 162, and the image forming unit 163. Therefore, since the ball 210 only needs to rotate, there is an advantage that the optical mouse can be freely used regardless of the angle between the reflective surface and the optical mouse.

As described above, according to the present invention, since the light propagates through the bundle optical fiber, it is not affected by the distance from the reflective surface to the image sensor and the light transmission path, so that the structure of the optical system is not limited to making the body pen-like. By implementing an image guide, good images can be delivered to the image sensor.

In addition, the image is input to the image sensor from the tip of the optical tip, which is a part in direct contact with the reflective surface, so that even if the angle of the pen-shaped optical mouse and the reflective surface changes to some extent, there is no change in the position or focal length of the mouse pointer. The precision can be further increased by using an optical mouse.

Furthermore, by installing a ball having a specific pattern at the end of the mouse body and using the light reflected from the mouse to determine the moving direction of the mouse, the optical mouse can be freely used regardless of the angle between the reflective surface and the optical mouse.

The present invention is not limited to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

1 is a schematic diagram for explaining an operation concept of a conventional pen-type optical mouse; And

2 to 4 are diagrams for explaining a pen-type optical mouse according to an embodiment of the present invention.

<Description of Reference Numbers for Main Parts of Drawings>

110: body 120: optical tip

131, 132: click button 140: wheel button sensor

141: wheel 142: light emitting unit

143: light sensor 150: lighting device

151: light emitting unit 152: optical fiber

153: Prism 161: condensing lens

162: bundle fiber 163: imaging portion

170: image sensor 180: touch button sensor

181: transparent button 182: light emitting unit

183: position sensor 210: ball

Claims (12)

A pen-type optical mouse for detecting the movement of a mouse by using reflected light to display the position of a cursor on a computer monitor; A pen-shaped body; A transparent optical tip installed at one end of the body; A light emitting unit, an optical fiber for guiding light emitted from the light emitting unit, and a prism installed at an output end of the optical fiber, the reflecting surface being installed in the body and positioned outside the body through the optical tip. An illumination device for irradiating light to the light; A condenser lens installed in the body such that the light reflected from the reflective surface passes therethrough; A bundle optical fiber for guiding light passing through the condenser lens; An imaging unit configured to receive light from the bundle optical fiber and to form an image; An image sensor which receives light from the image forming unit and converts the light into an electrical signal and outputs the electrical signal; A microcomputer for analyzing the pattern information of the surface of the reflection surface input to the image sensor using the electrical signal output from the image sensor, reading a moving direction and a moving distance of the mouse, and transmitting the same to a computer main body; Pen-shaped optical mouse. A pen-type optical mouse for detecting the movement of a mouse by using reflected light to display the position of a cursor on a computer monitor; A pen-shaped body; A transparent optical tip installed at one end of the body; A light emitting part, an optical fiber for guiding light emitted from the light emitting part, and a prism installed at an output end of the optical fiber, which is installed in the body, and the vicinity of the optical tip touching the reflective surface located outside of the body. An illumination device for irradiating light to the light; A condenser lens installed inside the optical tip such that light reflected from the reflective surface passes through the optical tip; A bundle optical fiber for guiding light passing through the condenser lens; An imaging unit configured to receive light from the bundle optical fiber and to form an image; An image sensor which receives light from the image forming unit and converts the light into an electrical signal and outputs the electrical signal; A microcomputer for analyzing the pattern information of the surface of the reflection surface input to the image sensor using the electrical signal output from the image sensor, reading a moving direction and a moving distance of the mouse, and transmitting the same to a computer main body; Pen-shaped optical mouse. A pen-type optical mouse for detecting the movement of a mouse by using reflected light to display the position of a cursor on a computer monitor; A pen-type mouse body; A ball having a pattern on the surface thereof rotatably installed at one end of the mouse body; An illumination device including a light emitting part, an optical fiber for guiding light emitted from the light emitting part, and a prism installed at an output end of the optical fiber, the illumination device being installed in the body to irradiate light to the ball; A condenser lens installed in the body such that the light reflected from the ball passes therethrough; A bundle optical fiber for guiding light passing through the condenser lens; An imaging unit configured to receive light from the bundle optical fiber and to form an image; An image sensor which receives light from the image forming unit and converts the light into an electrical signal and outputs the electrical signal; A microcomputer for analyzing the pattern information of the ball surface input to the image sensor using the electrical signal output from the image sensor to read the movement direction and the distance of the mouse and transmit it to the computer main body; Optical mouse. The pen-shaped optical mouse according to any one of claims 1 to 3, wherein the light emitting portion is made of an LED. The pen-shaped optical mouse according to any one of claims 1 to 3, wherein the imaging unit and the image sensor are provided so that the optical axis of the imaging unit and the optical axis of the image sensor are aligned. The method of claim 1, wherein the imaging unit refracts the input light and outputs the light. The image sensor is pen-type optical mouse, characterized in that the light is refracted from the imaging unit is installed to be input. According to claim 1 or claim 2, When the optical tip is pressed, the first click button is installed to detect and click on it; And The pen-type optical mouse, characterized in that it further comprises; The wheel according to any one of claims 1 to 3, wherein there are a plurality of holes penetrating the side surfaces, and the wheels are axially coupled to be freely rotated so that a portion thereof protrudes out through a drilling hole formed in the side of the body. ; A light emitting unit installed in the body to irradiate light to the wheel; The wheel button sensor is configured to include a light sensor for receiving the light passing through each of the holes of the wheel from the light emitted from the light emitting unit to grasp the rotation direction and angle of rotation of the wheel. Pen-type optical mouse, characterized in that provided. The method of claim 7, wherein there is a plurality of holes penetrating the side, when pressed to move inwardly into the body, and when the release is released to the outside of the body by the elastic force to be restored back to the original state, the shaft is free to rotate A wheel coupled to and installed to protrude outward through a drilling hole formed at a side of the body; A light emitting unit installed in the body to irradiate light to the wheel; The wheel button sensor is configured to include a light sensor for receiving the light passing through each of the holes of the wheel from the light emitted from the light emitting unit to grasp the rotation direction and angle of rotation of the wheel. Equipped, The first click button is pen-type optical mouse, characterized in that the wheel is installed to be clicked when pressed. According to any one of claims 1 to 3, Transparent button provided on the side wall of the body so that the finger contacts the outer surface; A light emitting unit installed in the body to irradiate light to a finger contacting the transparent button through the transparent button; An optical fiber that is reflected from the finger and guides the reflected light passing through the transparent button; Pen-type optical mouse, characterized in that the touch button sensor further comprises a position sensor for detecting the movement of the finger with the optical information provided through the optical fiber to perform a scroll function. According to claim 7, It is installed so that the finger is in contact with the outer surface, when pressed to move inwardly into the body, and when the release is released to the body side wall to spring back out of the body by elastic force to restore to the original state A transparent button installed; A light emitting unit installed in the body to irradiate light to a finger contacting the transparent button through the transparent button; An optical fiber that is reflected from the finger and guides the reflected light passing through the transparent button; Further comprising a position sensor for detecting the movement of the finger with the optical information provided through the optical fiber is provided with a touch button sensor for performing a scroll function, The first click button is a pen-shaped optical mouse, characterized in that is installed so that when the transparent button is pressed. The light emitted from the lighting apparatus is incident on the reflecting surface at an incidence angle of 14 ° to 21 ° when the angle between the pen-shaped optical mouse and the reflecting surface is 40 ° to 70 °. Pen-type optical mouse, characterized in that the lighting device is installed.