LED flash ring surrounding camera lens
First Claim
1. An illumination device comprising:
- a light guide shaped as a ring having a central opening, the light guide having light extraction features on a light exit surface of the light guide;
a first printed circuit board including first conductors and having a first reflective surface for reflecting light propagating through the light guide, the first printed circuit board electrically connecting a first light emitting diode (LED) to the first conductors;
at least a first portion of the first printed circuit board and the first LED being encapsulated in the light guide;
andthe light guide internally reflecting light from the first LED within the light guide until emitted through the light exit surface.
3 Assignments
0 Petitions
Accused Products
Abstract
A flash system for an electronic device includes a ring-shaped light guide having a central opening. A camera lens is positioned in or behind the opening. A first light emitting diode (“LED”) is mounted on a printed circuit board (“PCB”), and the LED and PCB are encapsulated by a molded light guide of the flash system. An identical LED and PCB are encapsulated at an opposite end of the molded light guide (i.e., 180 degrees away). The back surfaces of each PCB diffusively reflects light from the LED on the other PCB. Light extraction features on the light guide surface uniformly leak out light from the LEDs. The light emission profile of the light guide has a peak axially aligned with the central opening of the light guide and rolls off to the edge of the camera'"'"'s field of view.
-
Citations
20 Claims
-
1. An illumination device comprising:
-
a light guide shaped as a ring having a central opening, the light guide having light extraction features on a light exit surface of the light guide; a first printed circuit board including first conductors and having a first reflective surface for reflecting light propagating through the light guide, the first printed circuit board electrically connecting a first light emitting diode (LED) to the first conductors; at least a first portion of the first printed circuit board and the first LED being encapsulated in the light guide; and the light guide internally reflecting light from the first LED within the light guide until emitted through the light exit surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
-
-
10. An electronic device comprising:
-
a housing; a flash device disposed on the housing; a camera disposed in the housing; a camera lens coupled to the camera and disposed within a central opening of a light guide of the flash device; and the flash device comprising; the light guide, shaped as a ring having the central opening, the light guide having light extraction features on a light exit surface of the light guide; a first printed circuit board including first conductors and having a first reflective surface for reflecting light propagating through the light guide, the first printed circuit board electrically connecting a first light emitting diode (LED) to the first conductors; at least a first portion of the first printed circuit board and the first LED being encapsulated in the light guide; and the light guide internally reflecting light from the first LED within the light guide until emitted through the light exit surface. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19, 20)
-
Specification