Pen type optical pointing device
First Claim
1. A pen-type optical pointing device, the pen-type optical pointing device detecting a moving direction and distance thereof in such a way as to radiate light onto a plane, detect an image of the plane and analyze a difference between a previous image and a current image, comprising:
- a casing configured for a lower portion thereof to converge toward a central axis thereof, with an opening being provided at a lower end thereof; and
an illumination device installed inside the casing, near the opening of the casing and on an acutely inclined side of the casing to have an illumination angle ranging from 15°
to 60°
with respect to the vertical axis of the pointing device.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein is a pen-type optical pointing device. The pen-type optical pointing device detects the moving direction and distance thereof in such a way as to radiate light onto a plane, detect an image of the plane and analyze the difference between a previous image and a current image. The pen-type optical pointing device includes a casing configured for a lower portion thereof to converge toward a central axis thereof, with an opening being provided at a lower end thereof; and an illumination device installed inside the casing, near the opening of the casing and on an acutely inclined side of the casing to have an illumination angle ranging from 15° to 60°. If the pen-type pointing device constructed as described above is employed, the lower-end portion thereof can be reduced while an illumination angle used in existing optical mice can be maintained, so that it is possible to provide a pen-type pointing device having the same size as an existing writing pen.
11 Citations
15 Claims
-
1. A pen-type optical pointing device, the pen-type optical pointing device detecting a moving direction and distance thereof in such a way as to radiate light onto a plane, detect an image of the plane and analyze a difference between a previous image and a current image, comprising:
-
a casing configured for a lower portion thereof to converge toward a central axis thereof, with an opening being provided at a lower end thereof; and
an illumination device installed inside the casing, near the opening of the casing and on an acutely inclined side of the casing to have an illumination angle ranging from 15°
to 60°
with respect to the vertical axis of the pointing device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15)
-
-
8. A pen-type optical pointing device, the pen-type optical pointing device detecting a moving direction and distance thereof in such a way as to radiate light onto a plane, detect an image of the plane and analyze a difference between a previous image and a current image, comprising:
-
a casing configured for a lower portion thereof to gradually converge toward a central axis thereof, with an opening being provided at a lower end thereof; and
a tip point configured to protrude through a portion of the opening located on a side toward which the pen-type pointing device is inclined, come into contact with the plane at a bottom thereof, radiate illumination light in a direction opposite to a direction in which the pen-type pointing device is inclined, and have an illumination angle ranging from 15°
to 60°
with respect to the central axis of the tip point. - View Dependent Claims (9, 10, 11, 12)
-
Specification