Groove waveguide with reduced output divergence
AssigneePhysical Optics Corporation
InventorsIl?apos;ya Agurok, Tomasz P. Jannson
Life of this patent
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Abstract
A waveguide includes a longitudinal structure having a first end opposite a second end. The waveguide further includes a grooved surface formed on the structure adjacent the first end. The geometric size of the longitudinal structure is substantially constant while the grooved surface reshapes a light input ray to decrease the divergence of the ray in the vertical direction and increase the divergence of the ray in the horizontal direction.
Claims20
A waveguide comprising:
- a longitudinal structure having a first end opposite a second end, wherein a grooved surface is formed on a top surface and a bottom surface on the structure adjacent the first end.
A waveguide comprising:
- a longitudinal structure having a first end opposite a second end;
- a grooved surface formed on the structure adjacent the first end;
- and
- wherein the geometric size of the longitudinal structure is substantially constant while the grooved surface reshapes a light input ray to decrease the divergence of the ray in a first direction and increase the divergence of the ray in a second direction.
An illumination system to transmit an input light ray from a fiber optic source to a signboard display comprising:
- a collimating guide having a first end opposite a second end, and a longitudinal plank formed therebetween including a top surface and a bottom surface;
- and
- a grooved surface formed on the top surface and the bottom surface adjacent the first end.
Dependencies are inferred from the claim text.