Spot tir lens system for small high-power emitter

A lamp, comprising:

• a single emitter structure having a substrate with a plurality light-emitting diodes (LEDs) arranged thereon;
• and
• a total-internal-reflection (TIR) lens, the lens including:
• an optical body member having a substantially straight interior open channel in a lower portion thereof, the interior open channel having a lower opening for accommodating the single emitter structure;
• the optical body member having an upper surface defining an increasingly wider cavity extending from an interior portion to an upper opening in of the optical body;
• and
• a plurality of refractive surface regions disposed on the upper surface of the optical body.

A lamp, comprising:

• a single emitter structure having a substrate with a plurality light-emitting diodes (LEDs) arranged thereon;
• a total-internal-reflection (TIR) lens, the lens including a plurality of refractive surface regions disposed on a step-shaped upper surface of the optical body;
• and
• a holder having a plurality of tabs disposed along an inside rim of the holder and configured for radial compression fit with a flange of the lens, and three or more support members configured for centering the optical body member with respect to the single emitter structure.

A lens assembly, comprising:

• a total-internal-reflection (TIR) lens, the lens including:
• an optical body member having a substantially straight interior open channel in a lower portion thereof, the interior open channel having a lower opening for accommodating a light source;
• the optical body member having a step-shaped upper surface defining an increasingly wider cavity extending from an interior portion to an upper opening in of the optical body;
• and
• a plurality of refractive surface regions disposed on the step-shaped upper surface of the optical body.