Abstract: Methods and systems for imaging a subject's eyes are provided. In one embodiment, an optical imaging apparatus is provided that includes a plurality of eye imaging systems. Each eye imaging system may include a camera sensor with a viewing direction oriented towards a subject whose eyes are imaged. The eye imaging systems may also include at least one coaxial light source, which may be configured to provide light coaxially aligned with the viewing direction of the camera sensor. The eye imaging systems may further include supplementary light sources configured to light an eye from different angles.

Abstract: The invention relates to a lamp having a light source (10) and a sub-assembly comprising a protective sleeve (1) and two frame members, wherein the two frame members (2, 3) are each supporting the sleeve. Each frame member may comprise a clamping spring, which serves as a connection between the frame member and the sleeve. The invention also relates particularly to a lamp with an outer vessel (45), which is a parabolic aluminized reflector, and a light source, which is a ceramic discharge metal halide burner.

Abstract: The invention relates to a lamp having a light source (10) and a sub-assembly comprising a protective sleeve (1) and two frame members, wherein the two frame members (2, 3) are each supporting the sleeve. Each frame member may comprise a clamping spring, which serves as a connection between the frame member and the sleeve. The invention also relates particularly to a lamp with an outer vessel (45), which is a parabolic aluminized reflector, and a light source, which is a ceramic discharge metal halide burner.

Abstract: A specimen holder comprising a specimen space to be conditioned for an X-ray diffraction apparatus which is provided with a radiation window which is made of beryllium and which closes an opening in the holder over an arc of 180.degree. in a vacuumtight manner. To this end, the window is annealed to a temperature of approximately 600.degree.C. The specimen is provided on a removable support table, a support face of which contains the axis of curvature of the window.