Notched fiber array illumination device

Details Notched fiber array illumination device Notched fiber array illumination device

1995-01-23

1997-08-19

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385 47, 385901, 362 32, G02B 626

Patent

active

056596430

ABSTRACT:
An optical fiber having a core is disclosed. A notch having first and second sides is formed in the fiber and extends into the core. At least the portion of the interior of the notch adjacent the first side has an index of refraction less than that of the core. Light travelling at a first angle to the fiber axis and striking the first side will be totally internally reflected if the first angle is greater than a predetermined angle. If the first angle is less than the predetermined angle, a portion of the light will enter the notch and emerge through the second surface making a second angle to the first surface, the second angle being greater than the first.

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