Optical mouse and light pipe thereof, and optical component of optical navigation device

An optical mouse, operated with respect to an illuminated surface outside the optical mouse, the optical mouse comprising:

• a light source configured to emit a light beam;
• a light sensor;
• and
• a light pipe comprising a first optical element, a second optical element, a lens, a planar surface and a holder;
• wherein the light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface,
• wherein the lens is configured to receive a reflected light beam from the illuminated surface and having an optical axis,
• wherein the planar surface extends from the second optical element and is directly connected to an edge of the lens, wherein the optical axis of the lens is perpendicular to the planar surface,
• wherein the light sensor is configured to receive at least a part of the light beam reflected or scattered by the illuminated surface, and
• wherein the holder has an internal space configured to receive and hold the light source.

An optical mouse, operated with respect to an illuminated surface outside the optical mouse, the optical mouse comprising:

• a circuit board;
• a light source attached on the circuit board and configured to emit a light beam;
• a light sensor attached on the circuit board;
• and
• a light pipe comprising a first optical element and a second optical element, a lens and a planar surface;
• wherein the light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface,
• wherein the lens is configured to receive a reflected light beam from the illuminated surface and having an optical axis,
• wherein the planar surface extends from the second optical element and is directly connected to an edge of the lens, wherein the optical axis of the lens is perpendicular to the planar surface, and
• wherein the light sensor is configured to receive at least a part of the light beam reflected or scattered by the illuminated surface.

An optical component of an optical navigation device operated with respect to an illuminated surface outside the optical navigation device, the optical component configured to direct a light beam sequentially to the illuminated surface and an optical sensor of the optical navigation device, and the optical component comprising:

• a first optical surface configured to receive the light beam entering the optical component;
• a second optical surface;
• a lens, configured to receive a reflected light beam from the illuminated surface and having an optical axis;
• and
• a planar surface, extending from the second optical surface and directly connected to an edge of the lens, wherein the optical axis of the lens is perpendicular to the planar surface,
• wherein the light beam propagates in the optical component from the first optical surface directly to the second optical surface, and then leaves the optical component through the second optical surface to illuminate the illuminated surface.