System for uniform distribution of light using an array of lenslets

摘要

A system for uniform distribution of light is provided. The system comprises: an integrating rod comprising an output end opposite an input end, the integrator rod configured to emit, at the output end an integrated image of light received at the input end, the integrated image having an etendue Eimg and an area Aimg at a given distance from the output end; and, an apparatus comprising an input side located at the given distance, the apparatus configured to: receive, at the input side, the integrated image from the output end of the integrating rod; split the integrated image into a number N of sub-images, each of the sub-images having an area Asub, and an etendue Esub, such that Aimg is about N*Asub, and Eimg is about N*Esub; and, relay the sub-images.

主权项

1. A system comprising:
an integrating rod comprising an output end opposite an input end, the integrator rod configured to emit, at the output end an integrated image of light received at the input end, the integrated image having an etendue Eimg and an area Aimg at a given distance from the output end; and, an apparatus comprising an input side located at the given distance, the apparatus configured to:
receive, at the input side, the integrated image from the output end of the integrating rod;split the integrated image into a number N of sub-images, each of the sub-images having an area Asub, and an etendue Esub, such that Aimg is about N*Asub, and Eimg is about N*Esub; and,relay the sub-images, the apparatus further comprising:
an array of lenslets in a one-to-one relationship with the number N of the sub-images, each of the lenslets configured to form a respective one of the sub-images, the array of lenslets comprising respective inputs adjacent to one another at the (liven distance, forming the input side of the apparatus; and,a telecentric relay system located between the output end of the integrating rod and the array of lenslets, the telecentric relay system confiaured to: relay the integrated image to the respective inputs of the array of lenslets, a total area of the respective inputs is the area Aimg of the integrated image at the given distance; magnify the integrated image to one of increase or decrease the area Aimg of the integrated image at the given distance.