A white paper discussion of LED flashlight design.
It covers the optical, thermal, electrical, mechanical and
interface issues involved in designing a flashlight with
LEDs. The paper also discusses how the human visual
system works and how that impacts the flashlight design.
Cyalumes and other chemical
light sticks have many characteristics that make them seem
ideal as a backup light source. However, they cannot be
trusted to produce light when you need it most.
A proposed standard for measuring flashlight output that would
provide consumers useful data to compare one flashlight to
another. Note that since this paper was written, the FL-1 ANSI
Standard has been released. September 2005.