Ultra thin optical joystick and personal portable device having ultra thin optical joystick
First Claim
1. An optical joystick comprising:
- a first waveguide including a first reflecting surface located below a reading area for sensing the movement of an object and a first plano-convex lens portion condensing light reflected from the first reflecting surface, in which the first reflecting surface and the first plano-convex lens portion form a single body;
a second waveguide including a second plano-convex lens portion facing the first plano-convex lens portion and a second reflecting surface for reflecting light refracted at the second plano-convex lens portion, in which the second plano-convex lens portion and the second reflecting surface form a single body; and
an image sensor located below the second reflecting surface.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical joystick includes a first waveguide including a first reflecting surface located below a reading area for sensing the movement of an object and a first plano-convex lens portion condensing light reflected from the first reflecting surface, a second waveguide including a second plano-convex lens portion facing the first plano-convex lens portion and a second reflecting surface for reflecting light refracted at the second plano-convex lens portion, and an image sensor located below the second reflecting surface. The first reflecting surface and the first plano-convex lens portion form a single body, and the second plano-convex lens portion and the second reflecting surface also form a single body. The reflecting surface and the lens portion are in a single body, thereby notably reducing the thickness of the optical joystick. The first and second waveguides are facing each other, thereby improving refraction and condensing light.
-
Citations
21 Claims
-
1. An optical joystick comprising:
-
a first waveguide including a first reflecting surface located below a reading area for sensing the movement of an object and a first plano-convex lens portion condensing light reflected from the first reflecting surface, in which the first reflecting surface and the first plano-convex lens portion form a single body;
a second waveguide including a second plano-convex lens portion facing the first plano-convex lens portion and a second reflecting surface for reflecting light refracted at the second plano-convex lens portion, in which the second plano-convex lens portion and the second reflecting surface form a single body; and
an image sensor located below the second reflecting surface. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
2. An optical joystick comprising:
-
a first waveguide including a first reflecting surface located below a reading area for sensing the movement of an object and a first plano-convex lens portion condensing light reflected from the first reflecting surface, in which the first reflecting surface and the first plano-convex lens portion form a single body;
a second waveguide including a second plano-convex lens portion facing the first plano-convex lens portion and an outlet surface for passing light refracted at the second plano-convex lens portion, in which the second plano-convex lens portion and the outlet surface form a single body; and
an image sensor located adjacent to the outlet surface.
-
-
14. A personal portable device comprising:
-
a terminal body including a display module;
a cover glass partially exposed from the terminal body for reading the movement of an object;
a first waveguide including a first reflecting surface located below the cover glass and a first plano-convex lens portion condensing light reflected from the reflecting surface, in which the first reflecting surface and the first plano-convex lens portion form a single body;
a second waveguide including a second plano-convex lens portion facing the first plano-convex lens portion and a second reflecting surface for reflecting light refracted at the second plano-convex lens portion, in which the second plano-convex lens portion and the second reflecting surface form a single body;
an image sensor located below the second reflecting surface; and
a control unit moving a pointer displayed on the display module according to the movement of the object read by the image sensor. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
-
Specification