Image-generating optical element, has optical axis to the side of and not in contact with optical element, in form of lateral section of larger image-generating optical element

摘要

The device is constructed so that its optical axis passes to the side of the optical element and is not in contact with it. It is in the form of a lateral section of a larger image-generating optical element with a central optical axis and the desired light diffraction or reflection properties and adopts the optical axis and focal length of the larger optical element. Independent claims are also included for the following: a method of constructing an image-generating optical element.