OPTICAL TOUCH MOUSE

• US 20130328774A1
• Filed: 06/04/2013
• Published: 12/12/2013
• Est. Priority Date: 06/08/2012
• Status: Abandoned Application

• Current Assignee: PixArt Imaging Incorporated
• Original Assignee: PixArt Imaging Incorporated
• Inventors: CHEN, Hui-Hsuan, LAI, Hung-Ching
• Application Number:
  US13/909,415
• Publication Number:
  US 20130328774A1
• Time in Patent Office: Days
• US Class Current: 345/158
• CPC Class Codes: G06F 2203/04109 FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
• CPC Class Codes: G06F 3/03543 Mice or pucks G06F3/03541 takes precedence
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/0425 using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected tracking a projected light spot to determine a position on a display surface G06F3/0386

Abstract

An optical touch mouse includes a cover having a portion as a detect window, a lightguide adjacent to the detect window for directing light to the detect window, and a light source adjacent to the lightguide for providing light to enter the lightguide. The detect window is transparent to light provided by the light source such that light provided by the light source can penetrate through the detect window.

Claims

1. An optical touch mouse comprising:

a cover having a portion as a detect window for touch input;

a lightguide adjacent to said detect window; and

a light source adjacent to said lightguide;

wherein said lightguide and said light source are such arranged that light provided by said light source will enter said lightguide and then have a portion reflected by said lightguide to penetrate through said detect window.

2. The optical touch mouse of claim 1, wherein said cover comprises a. dye transparent to light provided by said light source.

3. The optical touch mouse of claim 1, wherein said cover comprises:

a visually transparent base; and

a layer of dye coated on an outer surface or an inner surface of said visually transparent base, said dye being transparent to light provided by said light source.

4. The optical touch mouse of claim 1, wherein said cover is opaque

5. The optical touch mouse of claim 1, wherein said cover comprises an opaque dye at a second portion of said cover other than said detect window.

6. The optical touch mouse of claim 1, wherein said light source comprises an invisible light emitting device.

7. The optical touch mouse of claim 6, wherein said invisible light emitting device comprises an infrared light emitting diode.

8. The optical touch mouse of claim 1, wherein said lightguide comprises a portion having a micro light scattering structure to destroy total reflection of light provided by said light source.

9. The optical touch mouse of claim 8, wherein said micro light scattering structure comprises dents, bumps, waves, grooves, bubbles or a dye.

10. The optical touch mouse of claim 9, wherein said dye comprises a reflectivity greater than 20%.

11. The optical touch mouse of claim 1, wherein said cover comprises a hard coating on an outer surface of said cover.