Optical navigation module and lens having large depth of field therefore
OwnerRussell Gruhlkeinventor
Life of this patent
Estimating the term…
Abstract
An optical navigation module includes a body having a base which rests on a surface with respect to which the optical navigation module moves; a lens disposed in the body and having a large depth of field that is longer than a distance between the lens and the surface so as to form an image of another surface other than the surface; a light sensor disposed in the body and which detects the formed image of the another surface; and a controller to use the detected image to determine a motion of the another surface relative to the optical navigation module and which is independent of the surface on which the base rests.
Claims20
An optical navigation module comprising:
- a body having a base which rests on a surface with respect to which the optical navigation module moves;
- a lens disposed in the body and having a large depth of field that is longer than a distance between the lens and the surface so as to form an image of another surface other than the surface;
- a light sensor disposed in the body and which detects the formed image of the another surface;
- and
- a controller to use the detected image to determine a motion of the another surface relative to the optical navigation module and which is independent of the surface on which the base rests.
A computer mouse for use in providing motion detection for use in inputting data with respect to a computer, the mouse comprising:
- a body having a base which rests on a surface with respect to which the optical navigation module moves;
- a lens disposed in the body and having a large depth of field that is longer than a distance between the lens and the surface so as to form an image of another surface other than the surface;
- a light sensor disposed in the body and which detects the formed image of the another surface;
- and
- a controller to use the detected image to determine a motion of the another surface relative to the optical navigation module and which is independent of the surface on which the base rests, and to transmit the determined motion to the computer.
Dependencies are inferred from the claim text.