Hon Hai Precision Industry Co., Ltd.

Chien-Hui Lin

Tai-Cherng Yu

Po-Yu Lin

Kuo-Fong Tseng

Shang-Yi Pai

An optical coupling module includes a top surface, a bottom surface parallel and opposite to the top surface, a front side surface, and a rear side surface parallel and opposite to the front side surface. The bottom surface defines a bottom groove including a first optical surface. Optical coupling lenses are arranged on the first optical surface. The bottom groove further includes a mounting surface parallel to the first optical surface and perpendicularly connected with the front side surface. Grooves in the mounting surface receive and locate optical fibers, which intersect with a straight line along the optical axes of the optical coupling lenses, the straight line runs between the optical coupling lenses and the photoelectric conversion members.

Optical coupling module and photoelectric conversion device including same

A lens for an LED includes a top face, a bottom face, and a circumferential periphery interconnecting the top and bottom faces. The top face defines a recess therein. A concave wall defines a bottom of the recess. In cross section of the lens, the concave wall consists of two symmetrical curves extending outward and upwardly from a bottom tip of the recess to connect with the top face. Each curve is a part of a hyperbola. The cavity is for receiving an LED therein. The lens further forms a cone-shaped top wall enclosing a top of the cavity. Light emitted from the LED travels through the cone-shaped top wall to strike the concave wall and be reflected thereby to radiate sideward and downwardly. The sideward and downwardly reflected light then is reflected by a reflective coating on a substrate to illuminate upwardly.

Lens for light emitting diode and LED module having the lens

A lens includes a light incident surface and a light output surface. In a coordinate system, the light incident surface satisfies a formula (1): cis a curvature of the light incident surface. ris a distance from the center of the lens to a joint point between the light input surface and a radius which is substantially perpendicular to the central axis of the lens. uis a normalized radius of the light incident surface. arepresents the aspheric coefficient. Qis a polynomial of order m and represents that the sum of ais equal to the sum of the root mean square of the slope of the light incident surface. The light output surface satisfies a formula (2): 

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Chien-Hui Lin