Device for uniform light intensity generation

摘要

Described herein is a device that generates a beam of light with uniform intensity. The device includes an array of light sources. The light generated passes through a beam splitter. One beam is used for feedback to maintain uniform intensity. The other beam passes through a barrel which is used to mold the beam with uniform intensity into the desired shape and to reduce divergence. The device can be used as part of a quality control system for testing a photoreceptor drum.

主权项

1. A testing system, comprising:
at least one device for generating a column of light having uniform intensity, the device comprising:
a housing;a beam splitter located within the housing;a two-dimensional array of light sources on a wall of the housing, the array being oriented towards the beam splitter such that light is split into a first beam and a second beam;a detector port located to intercept the first beam for providing feedback; andan exit aperture on a front wall of the housing, through which the second beam exits the housing as a column of light having uniform intensity; a plurality of congruent rings spaced apart from each other along an open central axis, each ring having its center on the open central axis; and a rail spanning the plurality of congruent rings; wherein the at least one device is located on the rail and oriented with the exit aperture pointing towards the open central axis.