OPTICAL SYSTEM AND METHOD FOR PRODUCING IN FOCUS AND DEFOCUSED IMAGES

摘要

An optical system for an apparatus for producing phase images of an object is disclosed which includes at least one optical element, such as a positive lens (12) and a positive lens (14), or a spatial light modulator (15) or deformable mirror (60) are interposed in light transmitted from a light source (5) to a charge coupled device (20) in order to produce in focus and defocused images. In the case of the lenses (12) and (14), the lenses are manipulated in a non-translatory manner in order to change the focus of the light, and in the case of the spatial light modulator, processor (40) outputs signals to the modulator (15) to control the modulator (15) to change the wave front of light passing through the modulator to create the focused and defocused images.