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US 7,922,337 B2Granted
Method for establishing a light beam with substantially constant luminous intensity
AssigneeSign-Tronic AG
InventorHenrik Glent-Madsen
Life of this patent
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Abstract
The invention relates to a method for establishing a light beam (CLB) with substantially constant luminous intensity comprising the steps of establishing a light beam (LB) by means of a light source (SAL) and controlling an attenuation of said light beam (LB) on the basis of occurrences of luminous intensity peaks (IP) in said light beam (LB).
Claims41
A method for establishing a light beam with substantially constant luminous intensity, comprising the steps of:
- establishing a light beam by means of a light source;
- and
- controlling an attenuation of said light beam on the basis of occurrences of luminous intensity peaks in said light beam;
- and wherein
- said controlling an attenuation step comprises applying a first level of attenuation to said light beam at times where the luminous intensity of said light beam assumes a magnitude of an intensity floor and applying a further level of attenuation to the said light beam at times where luminous intensity peaks occur;
- and
- said further level of attenuation step is proportioned to the magnitude differences between said luminous intensity peaks and said luminous intensity floor.
4 more elements
Dependencies are inferred from the claim text.