Projection in Haiti of small lenses in speckle reduction element.

摘要

The projection system of coherent light are those containing a projection subsystem system, relay systems, and speckle reduction element is to form an image, it is possible to have a first f- number, the relay system, projection The system may have a second one less than the first number and the f- f- number. It is possible to have a distance in which the operation of the first, the projection subsystem, a relay system, the distance in which the operation of the second one less than the distance in which the operation of the first It can have. It is possible to project an image of the initial those having a first size, the image of the intermediate, the system is configured to form an image is die equal to or of anything larger than the first size It can have a size of two. Speckle reduction element can have a surface that is not curved, but the image of the intermediate steps were transferred through it. Speckle reduction element can include an arrangement of small lenses is formed on the surface thereof. Speckle reduction element can be one that is moved in a direction parallel to the axis of the optical speckle reduction element.