Pen-like optical input device
First Claim
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1. A pen-like optical input device, comprising:
- a body;
a light source, disposed in the body, wherein the light source emits a light ray to the outside of the body, and a reflected light ray is generated outside the body;
a light sensing unit, disposed in the body, wherein the light sensing unit receives the reflected light ray; and
a lens, disposed in the body, wherein the reflected light ray is refracted to the light sensing unit through the lens;
wherein the light sensing unit comprises a light receiving surface on a side facing the lens;
a normal of the light receiving surface inclines to an optical axis of the lens, a first angle exists between the normal of the light receiving surface and the optical axis of the lens, and a degree of the first angle is in direct proportion to a magnification of the lens.
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Abstract
A pen-like optical input device includes a body. A light source, a light sensing unit and a lens are disposed in the body, a light ray is emitted by the light source to the outside of the body, and a reflected light ray is generated outside the body. The reflected light ray then is received by the light sensing unit after being refracted by the lens, in which the light sensing unit has a light receiving surface, and a normal of the light receiving surface inclines to an optical axis of the lens, thereby forming an angle with the optical axis.
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Citations
12 Claims
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1. A pen-like optical input device, comprising:
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a body; a light source, disposed in the body, wherein the light source emits a light ray to the outside of the body, and a reflected light ray is generated outside the body; a light sensing unit, disposed in the body, wherein the light sensing unit receives the reflected light ray; and a lens, disposed in the body, wherein the reflected light ray is refracted to the light sensing unit through the lens; wherein the light sensing unit comprises a light receiving surface on a side facing the lens;
a normal of the light receiving surface inclines to an optical axis of the lens, a first angle exists between the normal of the light receiving surface and the optical axis of the lens, and a degree of the first angle is in direct proportion to a magnification of the lens. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pen-like optical input device, comprising:
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a body; and an optical-mechanical module, disposed in the body, and capable of swinging relative to the body and/or moving along an axis direction of the body, wherein the optical-mechanical module comprises a light source, a light sensing unit and a lens, and the light sensing unit comprises a light receiving surface on a side facing the lens; wherein a normal of the light receiving surface inclines to an optical axis of the lens, a first angle exists between the normal of the light receiving surface and the optical axis of the lens, and a degree of the first angle is in direct proportion to a magnification of the lens. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification