Arrangement for improving the image field in ophthalmological appliances

The present invention relates to an arrangement with the image field of illumination or irradiation components of ophthalmic diagnostic and treatment devices is improved.In the inventive arrangement, the illumination beam path of ophthalmic instruments are also arranged one or more diffractive optical elements for targeted shaping the image plane to be irradiated in the eye. These may be located on the surface of other optical elements are pivoted into the illumination beam path and can be changed in wavelength by the filter.The image plane can be adapted to the spherical contour of the eye, so that the projected characters and structures have a uniformly high imaging quality both in the center and in the edge region of the eye.The present invention is for variable lighting for the diagnosis and therapy of the eye, in particular for irradiation of the eye lens, and other portions of the eye such as corneal or retina applicable. The arrangement can be used in a variety of ophthalmic devices, such as fundus cameras, slit lamps, laser scanners, OPMI devices or surgical microscopes.