JP3127830U - Optical module for mouse - Google Patents

Abstract

Provided is an optical module dedicated to a mouse that allows an optical mouse to be accurately operated even on a smooth and flat material, and that works effectively.
A light emitting member and an optical signal capture device, which are mainly composed of a plurality of lenses, a plurality of refracting parts, and a spectroscopic lens, and can be incorporated into an optical mouse after the components are integrated and miniaturized. In combination with the light source, the light source passes and refracts, generates a coaxial vertical concentrated light beam, and when projected on the image capturing surface, the uneven reflective surface generates different reflectivity and an optical signal (speckle) The optical signal capture device receives the speckle signal after reflection through the lens, effectively overcoming the problem of unclear shadows on smooth surfaces and fine planes of glass, and the optical signal capture process Without being affected, the vertically concentrated reflective optical axis allows the optical signal capture device to receive the optical signal accurately, and the mouse operation can be performed accurately even on the plane of the transparent material.
[Selection] Figure 2

Description

  An optical module dedicated to a mouse that is applied in an optical mouse and captures an optical signal of an imaging result, and the present invention is an optical module that forms a concentrated light type light reflection after refracting and reflecting light, The present invention relates to an optical module dedicated to a mouse, which can use an optical mouse on a transparent plane and improves convenience and operability when using the optical mouse.

  Currently, the optical mouse is gradually replacing the conventional mechanical ball mouse on the market, mainly because the optical mouse uses an optical module as a capture interface for image coordinates. Whichever volume is used, the user needs are more matched than the conventional ball mouse, and the image coordinates are captured using the optical principle, so that the operation of the mouse can be made more accurate. The operation principle of a general optical mouse is to use an encoder that can output two sets of serial logic signals, capture the logic calculation grounds of the X and Y axes, and move using the plane where the bottom of the mouse contacts. Occurs and forms a position shift. As shown in the cross-sectional view of FIG. 1, the optical module 10 used by the conventional optical mouse mainly includes a first lens 101, a first refraction part 102, a second refraction part 103, a third refraction part 104, and a second refraction part 104. The light-emitting member 106 is incorporated as a light-emitting source in a portion adjacent to the first lens 101, a light-emitting diode (LED) is generally used as a light-emitting source, and an image signal above the second lens 105. A capture unit 107 is incorporated. This optical module 10 mainly irradiates an LED light source on the image capturing surface A, and can clearly capture the image by irradiating the light source, and causes the mouse to move the pointer. Further, as shown in the drawing, when the light emitting member 106 emits the light source F (generates a light beam), the light source F first passes through the first lens 101, and when the light beam is emitted to the first refracting portion 102, the first When the refraction line F1 is formed and the first refraction line F1 is further emitted to the second refraction part 103, the second refraction line F2 is formed, and when the second refraction line F2 passes through the third refraction part 104, The third refracting line F3 is formed, and the third refracting line F3 is finally applied to the image capturing plane A, thereby forming an irradiation area F4. This image capturing plane A is a plane on which a mouse is used such as on a desk. When the irradiation area F4 is irradiated onto the image capturing surface A, a certain brightness is formed on the image capturing surface A, the image capturing position is irradiated, and the image capturing surface is a rough surface (see enlarged view). The depression angle of the light from the light source received is about 20 to 35 degrees, and when the rough surface of the image capturing surface A is irradiated, a dark shadow A11 is formed in the recess A1 that is not irradiated to the light source. At this time, the image signal capture unit 107 captures an image of the dark shadow A11 on the surface of the irradiation area F4 image capturing surface A via the second lens 105. Thus, after the logic calculation conversion of the electronic member, the pointer becomes a pointer that the operator sees on the computer monitor screen, and the operator can move the position by using this pointer to operate the software and hardware functions. . This type of optical module 10 mainly uses refracted light to change the direction of LED light, forms one irradiation area F4 on the refracted light, and irradiates this irradiation area F4 at a certain position to capture an image. A shadow A11 is formed in the concave portion A1 of the surface A to capture the image, and this is used as a basis for the logic operation. Using the brightness of the irradiation area F4, the image signal capture unit 107 captures the image of the position irradiated with the light source. An image of the dark shadow A11 of the surface A recess A1 is captured (see grid diagram B of the optical signal). However, the optical module 10 of this type has one problem in its application. As shown in the figure, the image capturing surface A is a plane where the mouse actually contacts, but the material of the image capturing surface A is For example, in the case of a smooth and flat material such as glass or acrylic, it may be impossible to work because it affects the formation of the dark shadow A11 in the recess A1 of the image capturing surface A, and an error may occur in the image captured by the image signal capture unit 107. , May cause the mouse pointer to jump or float. For this reason, this type of mouse cannot be used on a flat, flat surface.

In addition, Taiwan Patent No. I230359 “Optical signal image capture method” shows an application of another conventional optical module, in which a light emitting member mainly generates an optical axis for projecting a light beam in the vertical direction, Using the action of the lens, the light beam (optical axis) is emitted to the image contact surface below the transparent medium, and the image on the image contact surface is reflected on the aforementioned spectroscopic lens, and after multiple reflections, The image is captured by the image sensor member, and the optical axis of the light beam is mainly refracted at the same point by using a spectroscopic lens between the light emitting member and the image sensor member to reduce the phase error.
Taiwan Patent No. I230359

  The present invention is an analysis and improvement on the structure of the optical module in order to make the optical module more effective. The main purpose of the present invention is to make the optical mouse accurate even on smooth and flat materials. The purpose is to provide a mouse-specific optical module that can be operated effectively.

  The mouse optical module of the present invention is mainly composed of a plurality of lenses, a plurality of refracting parts, and a spectroscopic lens. The optical module can be integrally formed. Reflective surface that can be incorporated in, and combined with light emitting member and optical signal capture device, the light source passes through and refracts, generates a coaxial vertical concentrated light beam, and is projected on the image capturing surface Produces different optical reflectances to form optical signals (speckles), and the optical signal capture device receives the speckle signals after reflection through the lens, effectively shadowing smooth surfaces and fine planes of glass The optical signal capture process is unaffected, and the vertically concentrated reflective optical axis receives the optical signal accurately in the optical signal capture device. , It can be performed accurately mouse even on the plane of the transparent material.

  Hereinafter, in order to facilitate understanding of the contents of the present invention, a detailed description will be given based on the drawings.

  FIG. 2 shows a cross-sectional view of the mouse optical module 20 of the present invention. As shown in this figure, the optical module 20 is mainly composed of a first condenser lens 201, a first refracting section 202, a second refracting section 203, a second condenser lens 204, a spectroscopic lens 205, and a lens 206. The optical module 20 can pass through a light source (not shown) to generate light refraction and light reflection. Further, as shown in the figure, the first refracting portion 202 has an appropriate angle of inclination with respect to the first condenser lens 201, and the distance between them is an appropriate distance, and the light source is the first condenser lens 201. After passing through, refraction occurs when the first refracting portion 202 is reached. The second refracting part 203 is molded at an appropriate distance from the first refracting part 202, and when the light source refracted and emitted by the first refracting part 202 reaches the second refracting part 203, a second refraction is generated. To do. The second condenser lens 204 is molded with an appropriate depression angle with respect to the second refracting portion 203, and the distance between the two is set to an appropriate distance, and the light source refracted and emitted by the second refracting portion 203 is the second. When reaching the condenser lens 204, a parallel light beam having a slightly smaller aperture can be generated. The spectroscopic lens 205 is molded at a certain appropriate distance with respect to the second condenser lens 204. After the parallel light beam generated by the second condenser lens 204 arrives, refraction is formed at the position of the image capturing surface A. To do.

  FIG. 3 shows an optical signal imaging diagram of the optical module for mouse of the present invention. As shown in this figure, a light emitting member (for example, a light emitting diode or laser diode having a wavelength of 680 nm to 950 nm) 207 provides a light source f, and the light emitting member 207 is installed in a vertical projection type or an oblique projection type. After the light source f is generated, its main light path is that the light source f enters the first condenser lens 201 and passes through the first condenser lens 201, and then the light source forms a first gradual decrease. Then, the first parallel light flux f1 is generated. When the first parallel light beam f1 reaches the first refracting portion 202, the first refracted light f2 is generated, and when the first refracted light f2 reaches the second refracting portion 203, it is refracted again to generate the second refracted light beam f3. Then, after the second refracted light beam f3 reaches the second condenser lens 204, a second gradual decrease is formed, and a second parallel light beam f4 is generated. After the second parallel light beam f4 passes through the second condenser lens 204 and is condensed, the light beam has a smaller outer diameter and is more concentrated, and the second parallel light beam f4 is directed toward the spectroscopic lens 205. And injected. At this time, the second parallel light beam f4 is refracted by about 80 to 90 degrees in the downward direction to generate a third refractive light beam f5, and after the third refractive light beam f5 contacts the image capturing surface a in the downward direction, the upward direction. The reflected light beam f6 is reflected. At this time, an optical signal after the reflected light beam f6 is reflected passes through the lens 206, and a speckle signal (shown in the grid diagram in the figure) formed after the reflection of the image capturing surface a by the optical signal capture device 208. Is captured and the speckle signal is not lost. Furthermore, as shown in the figure, the aperture is gradually reduced after the light source f is refracted by the design of the first condenser lens 201, the first refractive part 202, the second refractive part 203, and the second condenser lens 204. When the parallel luminous flux F4 is concentrated through the second condenser lens 204 and reaches the spectroscopic lens, the refracted light (third refracted light) is vertically formed. A light f5 and a reflected light beam f6) are formed, and thus a speckle signal is formed. As shown in the enlarged portion in the figure, the third refracted light beam f5, the reflected light beam f6, the lens 206, the optical signal capture device 208, and the image capturing surface a after refraction exhibit a coaxial vertical and concentrated light beam. Is projected onto the image capturing surface a, the reflecting surface a having irregularities generates different reflectances to form speckle signals, and the optical signal capture device 208 reflects the speckles after reflection through the first lens 206. The signal is received so that the reflection of the optical signal is not affected even on a smooth surface or a fine image capturing surface of glass. As described above, even if the image capturing surface a in contact with the mouse is a smooth and flat material, the reflected speckle signal is not limited by the material of the image capturing surface A and is reflected by the optical signal capturing device 208. The subsequent speckle signal (speckle imaging) can be received effectively.

  FIG. 4 shows the best embodiment of the present invention. As shown in this figure, the lens 206 may be formed by single molding, and mainly, an embedded portion 209 is provided above the optical module 20, and the single molded lens 206 can be incorporated in the embedded portion 209. Thus, the same optical module 20 can be combined with different lenses and optical modules based on the need for different standard lenses with different light sources, which can greatly save mold manufacturing costs and is most suitable Combination can be obtained, and the production efficiency can be effectively improved.

  FIG. 5 shows an embodiment of the mouse optical module of the present invention. As shown in this figure, the optical module 20 of the present invention is incorporated in a mouse 30, and the mouse can be used for positioning optical coordinates.

  As can be seen from the above description, the present invention mainly integrates a lens, a refractive lens and a spectroscopic lens, undergoes refraction and reflection of a light source, generates coaxial refracted light and reflected light, and transmits an optical signal on the same axis. After being reflected vertically along the direction, it is received by the optical signal capture device, so that even if the reflected image capturing surface is transparent, smooth, flat, the speckle imaging is completely image capturing surface If this image is displayed and incorporated in an optical mouse, the operation of the optical mouse can be made more accurate.

As described above, the present invention provides an optical module that works effectively even on a transparent, smooth and flat material after the implementation, and can ensure an accurate operation of the optical mouse.
The above description is given as the best embodiment of the present invention, and does not limit the scope of implementation of the present invention, and does not depart from the spirit and scope of the present invention by those who are familiar with the related art. All equivalent changes and modifications are intended to be included within the scope of the present patent.

It is sectional drawing of the conventional mouse | mouth optical module. It is sectional drawing of the optical module only for mice | mouths of this invention. It is a schematic diagram which shows optical signal image formation of the optical module only for a mouse | mouth of this invention. It is a three-dimensional perspective view of the best embodiment of the present invention. It is a three-dimensional perspective view which shows the state which implemented the optical module of this invention in the mouse | mouth.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Optical module 101 1st lens 102 1st refractive part 103 2nd refractive part 104 3rd refractive part 105 2nd lens 106 Light emitting member 107 Image signal capture unit 20 Optical module 201 1st condensing lens 202 1st refractive part 203 1st Birefringent unit 204 Second condenser lens 205 Spectroscopic lens 206 Lens 207 Light emitting member 208 Optical signal capture device 209 Built-in unit
A Image capture plane
A1 recess
A11 Shadow
B Grid diagram
a Image capture plane
F light source
F1 first refraction line
F2 Second refraction line
F3 Third refraction line
F4 Irradiation area f Light source
f1 First parallel light flux
f2 First refraction light beam
f3 Second refraction light beam
f4 Second parallel beam
f5 Third refraction light beam
f6 reflected light flux

Claims (8)

Built into the mouse, allows the mouse to create a speckle pattern using light reflection, enables pointer operation, provides a light source using a light emitting member, and further reflects the light after being reflected by the optical signal capture device. An optical module dedicated to a mouse for receiving a speckle pattern, wherein the first condenser lens that passes through the light source and generates a first parallel light beam that forms a first decrease in the passing light source, and the first After the parallel light beam has arrived, the first refracting part that generates the first refraction and forms the first refracted light and the first refracting part is molded. After the first refracted light arrives, the second refracted part for generating the second refracted light and the second refracted part are molded relative to the second refracted part, and after the second refracted light arrives, the second gradual decrease The second parallel light flux that formed A second condensing lens to be generated, and a third refracted light that is molded relative to the second condensing lens and refracts perpendicularly downward after the parallel luminous flux arrives; and A spectroscopic lens capable of reflecting the reflected light beam after the refracted light comes into contact with the image capturing surface, and a lens that passes through each of the refracted light beam and the reflected light beam and then received by the optical signal capture device are arranged. An optical module dedicated to mice. 2. The mouse optical module according to claim 1, wherein the plurality of condensing lenses, the plurality of refracting portions, the spectroscopic lens, and the lens are integrally formed to be inseparable. The plurality of condensing lenses, the plurality of refracting portions, and the spectroscopic lens are integrally formed and cannot be separated, and a built-in portion is provided above the spectroscopic lens, so that the lens can be built therein. The mouse optical module according to claim 1, wherein the mouse is an optical module. The mouse optical module according to claim 1, wherein the light emitting member is a light emitting diode. 5. The mouse optical module according to claim 4, wherein the light emitting diode has a wavelength of 680 nm to 950 nm. 2. The mouse optical module according to claim 1, wherein the light emitting member is installed in a vertical projection type. 2. The mouse optical module according to claim 1, wherein the light emitting member is installed in an oblique projection type. The mouse optical module according to claim 1, wherein the light emitting member is a laser diode.

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