LED light converging system

Details LED light converging system LED light converging system

2007-11-13

2007-11-13

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With field curvature shaping

C359S794000

Reexamination Certificate

active

11396548

ABSTRACT:
An LED light converging system includes an LED light source, and first and second lens units aligned in sequence along an optical axis. The LED light source provides source light. The first lens unit has a first focal length, and is disposed forwardly of and is spaced apart from the LED light source by a first distance less than the first focal length such that a virtual image of the source light provided by the LED light source is formed rearwardly of the LED light source. The second lens unit has a second focal length, is disposed forwardly of the first lens unit, and is spaced apart from the virtual image of the source light by a second distance larger than the second focal length such that a real image of the source light provided by the LED light source is formed forwardly of the second lens unit.

REFERENCES:
patent: 5584568 (1996-12-01), Corbasson et al.

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