LED optical communication receiving lens and LED optical communication system

摘要

A LED optical communication receiving lens includes a first surface and a second surface opposite to the first surface. The first surface includes a first spherical surface and a second spherical surface connected to the first spherical surface. The second surface includes a third spherical surface and a planar surface connected to the third spherical surface. A position of the LED optical communication receiving lens is defined as a three-dimensional Cartesian coordinate system (x, y, z). Sphere centers and symmetric central points of the first spherical surface, the second spherical surface, and the third spherical surface are located on the x axis. The first spherical surface and the planar surface are transmitted surfaces. The second spherical surface and the third spherical surface are reflective surfaces. The present application also relates to a LED optical communication system including the LED optical communication receiving lens.

主权项

1. A LED optical communication receiving lens, comprising:
a first surface comprising a first spherical surface and a second spherical surface connected to the first spherical surface; and a second surface opposite to the first surface, the second surface comprises a third spherical surface and a planar surface connected to the third spherical surface; wherein a position of the LED optical communication receiving lens is defined as a three-dimensional Cartesian coordinate system (x, y, z); a sphere center and a symmetric central point of the first spherical surface, a sphere center and a symmetric central point of the second spherical surface, a sphere center and a symmetric central point of the third spherical surface are located on the x axis; the first spherical surface and the planar surface are transmitted surfaces; the symmetric central point of the first spherical surface is located on an origin (0, 0, 0) of the three-dimensional cartesian coordinate system (x, y, z); the planar surface is parallel to a surface formed by the y axis and the z axis; the second spherical surface and the third spherical surface are reflective surfaces; field of views of the LED optical communication receiving lens ranges from about 0° to about 48.3°, and an illumination value of each field of view is larger than about 1 lux.