CN201063156Y

CN201063156Y - Key type optical pointer device

Info

Publication number: CN201063156Y
Application number: CNU2007200045281U
Authority: CN
Inventors: 刘永隆; 阮承宗
Original assignee: Sunrex Technology Corp
Current assignee: Sunrex Technology Corp
Priority date: 2007-03-02
Filing date: 2007-03-02
Publication date: 2008-05-21
Anticipated expiration: 2017-03-02

Abstract

The utility model relates to a button type optical pointer device, the device includes: the rectangular substrate is fixedly arranged on a keyboard circuit board, and two symmetrical clamping pieces are arranged on the substrate; an optical chip, fixed on the substrate and comprising: a light source, a photosensitive element and a direction and distance calculating element; and a hollow key frame, which comprises a top light-transmitting plate and two lateral clamping slot holes, so that the key frame is assembled and fixed on the substrate; when the light source obliquely irradiates the bottom surface of the light-transmitting plate and a reflecting object is arranged on the top surface of the light-transmitting plate, a first optical path from the light source to the object and returning to the photosensitive element is established, and the photosensitive element records an interference pattern signal of a first corresponding position according to the first optical path; when the reflecting object is moved, a second optical path is established, and the photosensitive element records an interference pattern signal of a second corresponding position according to the second optical path; then, the direction and distance calculating element calculates the correct moving direction and distance of the object, so that a pointer moves a corresponding direction and distance on a screen.

Description

Press of bonding optical pointer device

Technical field

The utility model is the device that is applicable to moving hand on computing machine or the mobile phone screen about a kind of, refers to a kind of be installed on the keyboard and as the optical pointer device of button size especially.

Background technology

The prior art trace ball is installed on the keyboard of notebook or the keyboard region of mobile phone usually, and also is equiped with trace ball on the keyboard of part desk-top computer.And the main element of relevant trace ball and operating principle are as described below: an optical chip is installed on a substrate, it for example is electrically connected with the circuit of computer keyboard, has a photo-sensitive cell on the optical chip, and a direction and distance calculation element, one light source such as LASER Light Source, be installed on the substrate adjacent with optical chip, one pedestal, reach a sliding ball, the color of irregular coating or the sags and crests of irregular distribution are set on it, and rollably are installed on the pedestal, wherein the laser of light source ejaculation points to several points (as three points) on sliding ball surface always, and reflect back into photo-sensitive cell from it, and photo-sensitive cell writes down the position picture of a correspondence in view of the above.

During operation, hand rolls and slides ball, the position of three points is originally occupied by other three different points, therefore new correspondence position picture is different with original correspondence position picture, and this direction and distance calculation element can calculate the moving direction and the distance of sliding ball by this, the direction and the distance of result's to be pointer move on computer screen for example correspondence.

But the prior art trace ball has following shortcoming, as the volume that occupies is too big, and this is unfavorable for being installed on the compact electronic device (as the keyboard of notebook, or the keyboard of the desk-top computer of the keyboard region of mobile phone or some type); And its resolution is low, and therefore action is also sensitive inadequately, and necessity of improvement is arranged in fact.

Summary of the invention

The purpose of this utility model provides a kind of by of bonding optical pointer device, and it mainly is the following defective for the trace ball that overcomes/solve prior art:

(1) volume that occupies of the trace ball of prior art is too big, is unfavorable for being installed in (as the keyboard of notebook, the keyboard region of mobile phone) in the compact electronic device.

(2) the low and operational motion of the track team resolution of prior art is also sensitive inadequately.

The utility model is a kind of by of bonding optical pointer device, comprising: a rectangular substrate, and it is installed on the keyboard pcb, and is provided with the clamping piece of two symmetries in this substrate; The key frame of one hollow, it comprises a top light-passing board and two side direction clip slotted eyes, described clip slotted eye is the fixing described clamping piece of corresponding fastening respectively, and described key frame assembling is fixed on the described substrate; And an optical chip, it is installed on the described substrate, and is sealed in the described key frame, and this optical chip comprises:

One light source is used for an oblique reflective object that shoots to described light-passing board end face;

One photo-sensitive cell, be used for when described reflective object moves, the interference fringe pattern signal of one first correspondence position of first optical path of photo-sensitive cell got back in record from light source to reflective object, and the interference fringe pattern signal of one second correspondence position of second optical path;

One direction and distance calculation element are used for the interference fringe pattern signal of comparison first correspondence position and second correspondence position and calculate the moving direction and the distance of described reflective object, make pointer on the screen can move the direction and the distance of a correspondence.

According to first feature of the present utility model, should can be contained in the keyboard of notebook by of bonding optical pointer device, or the keyboard region of mobile phone, or on the keyboard of desk-top computer.

According to second feature of the present utility model, this light source is to belong to the infrared light that the semiconductor laser that produced by laser diode (Laser Diode) or light emitting diode (LED) are produced.

The utility model has following practical effect by the major technique feature of of bonding optical pointer device: the volume of (1) this optical pointer device is little, this helps being installed in compact electronic device (as the keyboard of notebook, or the keyboard region of mobile phone, or the keyboard of desk-top computer) on; (2) the resolution height of this optical pointer device, therefore very accurately sensitive when practical operation is used, specifically promote the usefulness that it controls use.

Below sincerely with specific embodiment, and assistant elaborates with graphic, and the juror can be had further and understand for technical characterictic of the present utility model.

Description of drawings

Fig. 1 presses the three-dimensional exploded view of of bonding optical pointer device for the utility model;

Fig. 2 presses sectional view after the of bonding optical pointer device assembling for the utility model, and wherein finger places the light-passing board end face of key frame, to show the light that sends from light source, through got back to the optical path of photo-sensitive cell by the finger reflection;

Fig. 3 is mounted in assembled state synoptic diagram on the desktop computer keyboards for the utility model by of bonding optical pointer device; And

Fig. 4 is mounted in assembled state synoptic diagram in the cell phone keyboard district for the utility model by of bonding optical pointer device.

Drawing reference numeral:

10: optical pointer device 21: clamping piece

20: substrate 31: light source

22: through hole 41: light-passing board

30: optical chip 51: fixture

32: photo-sensitive cell 61: key hole

40: key frame 71: key hole

42: clip slotted eye 60: computer keyboard

50: circuit board 70: mobile phone

Embodiment

At first please refer to Figure 1 and Figure 2, according to the of bonding optical pointer device 10 of pressing of the present utility model, it comprises: a rectangular substrate 20, be provided with the clamping piece 21 and the plurality of through holes 22 of two symmetries in this substrate 20, be installed on the plurality of fixed part 51 on the keyboard pcb 50 and this plurality of through holes 22 is correspondences, be used for fixing this substrate 20 on this circuit board 50; One is installed in the rectangular optical chip 30 on this substrate 20, it comprises: a light source 31, it is arranged on the surface concave of this optical chip 30 and can sends laser, or by infrared light that LED produced, one photo-sensitive cell 32, it is arranged on the surperficial correspondence position of this optical chip 30, and a direction and distance calculation element (not shown); And the key frame 40 of a hollow, it comprises a top light-passing board 41, and two side direction clip slotted eyes 42, and described clip slotted eye 42 is the fixing described clamping piece 21 of corresponding fastening respectively, these key frame 40 assemblings are fixed on this substrate 20, and this optical chip 30 is sealed in this key frame 40.

Relevant main structural attitude of the present utility model and actual effective utilization, it is as follows then sincerely to explain the main points briefly: the bottom surface that is upwards shot to this light-passing board 41 by the laser of these light source 31 oblique ejaculations, wherein this light source 31 can belong to the semiconductor laser light resource that is produced by laser diode (Laser Diode), its laser diode has that volume is light and handy, consumed power is little and the power saving effect, and laser belongs to the monochromatic source of the high benefit of single-frequency;

When practical operation is used, the user is the end face that places this light-passing board 41 by single finger (the also element of available erasing rubber and so on) with as reflective object, the feasible laser that sends by this light source 31, through being got back to this photo-sensitive cell 32 by finger reflection forming first optical path, and this photo-sensitive cell 32 writes down the interference fringe pattern signal of one first correspondence position in view of the above.Then, user's moveable finger and set up the laser that sends from this light source 31, and through being got back to second optical path of photo-sensitive cell 32 to form by the finger reflection, it obviously is different from first optical path, and this photo-sensitive cell 32 writes down the interference fringe pattern signal of one second correspondence position in view of the above.Then, one direction and distance calculation element then calculate correct finger moving direction and distance by the interference fringe pattern signal of first correspondence position and second correspondence position relatively, can make pointer on the computer screen can accurately move the direction and the distance of a correspondence.

Please refer to Fig. 3, for showing an embodiment of the present utility model, of the present utility modelly be mounted on 61 positions, a programmable button hole on the computer keyboard 60 by of bonding optical pointer device 10.

Please refer to Fig. 4, for showing another embodiment of the present utility model, on 71 positions, a programmable button hole that are mounted in a mobile phone 70 key zones by of bonding optical pointer device 10 of the present utility model.

By above-mentioned embodiment of the present utility model as can be known, the utility model has following practical effect by the major technique feature of of bonding optical pointer device: the volume of (1) this optical pointer device is little, this helps being installed in compact electronic device (as the keyboard of notebook, or the keyboard region of mobile phone, or the keyboard of desk-top computer) on; (2) the resolution height of this optical pointer device, therefore very accurately sensitive when practical operation is used, specifically promote the usefulness that it controls use.

Above-mentioned several embodiment only are explanation principle of the present utility model and effect thereof, and unrestricted the utility model.Therefore practising this area person skilled makes amendment to the foregoing description and changes and still do not take off spirit of the present utility model.The utility model has possessed usability on the industry, novelty and progressive, and meets novel patent requirement, so mention application in accordance with the law.

Claims

1. A key-type optical pointer device, characterized in that the device comprises:

A rectangular substrate, which is fixed on a keyboard circuit board, and two symmetrical latching parts are arranged on the substrate;

A hollow key frame, which includes a top light-transmitting plate and two lateral locking slots, and the locking slots are correspondingly fastened and fixed to the locking parts, so that the key frame is assembled and fixed on said substrate; and

An optical chip, which is fixed on the substrate and sealed in the key frame, the optical chip includes:

a light source for obliquely shooting a reflective object towards the top surface of the light-transmitting plate;

A photosensitive element is used to record an interference fringe pattern signal of a first corresponding position of the first optical path from the light source to the reflective object and back to the photosensitive element when the reflective object moves, and a signal of the second optical path The interference fringe pattern signal of the second corresponding position;

A direction and distance calculation element, used to compare the interference fringe pattern signals of the first corresponding position and the second corresponding position to calculate the moving direction and distance of the reflecting object, so that the pointer on the screen can move a corresponding direction and distance.

2. The key-type optical pointer device according to claim 1, characterized in that, the key-type optical pointer device can be mounted on a keyboard of a notebook computer, or a keyboard area of a mobile phone, or a keyboard of a desktop computer.