Patent · US Active

Light source module

US8382293B2 · kind B2 · utility

89Cited by

26References

20Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

William E. Phillips, III · Cincinnati, US
Jacob Moskovich · Cincinnati, US
Zhisheng Yun · Woodbury, US

Key dates

Filing date	Apr 30, 2009
Grant date	Feb 26, 2013
Priority date	—
Expiry date	Mar 23, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG03B21/208
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A light source module is disclosed. The light source module includes an emitter having a light emitting surface, a solid integrating optic aligned to accept light emitted from the emitter at an entrance face and deliver light to an exit face, and a lens aligned to receive light from the exit face. The lens has a substantially hemispherical portion having a radius of curvature and the exit face of the solid integrating optic has an exit face diagonal. The ratio of the radius of curvature to the exit face diagonal is greater than 0.7. The solid integrating optic and the lens each have an index of refraction, and the ratio of the lens index of refraction to the solid integrating optic index of refraction is greater than unity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.