Flattop laser beam generation and reshaping on an oblique screen using light pipes
AssigneePavilion Integration Corporation
InventorsNingyi Luo, Jihchuang Robin Huang
Life of this patent
Estimating the term…
Abstract
A high power uniform light beam is generated on an oblique plane by one or more diode lasers and 2 or more light pipes. The light pipes may be trapezoidal so that the illuminated area is substantially square. The light pipes may be elliptical so that the illuminated area is substantially circular.
Claims25
An illumination apparatus for use with a detection/observation module and for use with a sample area defining a plane, the illumination apparatus having an optical axis, the optical axis being away from normal to the plane and defining an oblique angle relative to the normal axis, the illumination apparatus comprising at least two light pipes, each of the light pipes having a predetermined cross section, each of the light pipes illuminated by a respective power level of light differing from any other of the light pipes, the illumination apparatus further comprising an imaging lens disposed between the light pipes and the sample area.
A method for illuminating a sample area, the sample area defining a plane, the method comprising aiming at least two light pipes at the sample area, the light pipes defining an optical axis, the optical axis being away from normal to the plane, each of the light pipes having a predetermined cross section, the method further comprising illuminating each of the light pipes with a respective power level of light differing from the power level employed for any other of the light pipes, the method further comprising disposing an imaging lens between the light pipes and the sample area.
Dependencies are inferred from the claim text.