Back to results
US 8,944,647 B2Granted
Illumination source with variable divergence
AssigneeOptotune AG
InventorsMichael Bueeler, Manuel Aschwanden
Life of this patent
Estimating the term…
Abstract
The illumination source has a LED light source (2) generating a first divergent light field (6). The light from the LED light source (2) is processed by a first optical element (10), in particular a first lens element, to generate a second divergent light field (19). The first divergent light field (19) is processed by a second optical element (20) having a variable lens variable focus in order to generate a third light field (35) whose divergence can be varied.
Claims14
An illumination source comprising
- an LED light source generating a first divergent light field with a first divergence,
- a first optical element arranged and structured to receive said first divergent light field and to generate a second divergent light field with a second divergence, wherein said second divergence is smaller than said first divergence, and
- a second optical element comprising a variable lens having a lens interface with variable curvature, wherein said variable lens is arranged and structured to receive said second divergent light field and to generate a third light field with variable divergence, and
- wherein said second divergence is at least 10°.
1 more element
Dependencies are inferred from the claim text.