Abstract: A microscope comprising a base portion (13), a cross member (15) and a vertical portion (14) connecting the base portion and cross member, at least one lamp (LA) for microscope illumination being arranged within the vertical portion, a slide adapted to be shifted in and out of the vertical portion from above in a substantially vertical direction holding at least one lamp. The slide is made of a material exhibiting good heat conducting properties and is formed with longitudinal ribs. The slide is arranged in a cavity extending in a substantially vertical direction and thermally insulated from the walls defining the cavity.

Abstract: A microscope has a support structure which comprises a base, an upright portion, a cross-head and an objective-turret assembly mounted on an underside of the cross-head. The cross-head is mounted on the upright portion and contains principal components for forming an image. The upright portion and the cross-head define a generally planar division therebetween, whereby a generally planar gas-tight seal can be provided between the upright portion and cross-head. This enables the upright portion and the base to be disposed in a gas-tight chamber while the cross-head is located outside the chamber.

Abstract: A drafting apparatus, or macrophotography attachment, for a microscope of the inverted type, the apparatus being arranged to provide an erect and laterally non-reversed image of an object on a drawing-surface, and in the observation plane, or an erect and laterally non-reversed image of a drawing or object at the observation and film planes of a microscope.

Abstract: A marking image control system for a microscope arrangement in which the image of a marking on a mask is reflected into the optical path and combined with an object image of the microscope, the system forming an intermediate image of the marking in order to facilitate shifting of the image of the marking in a film plane or a viewing plane of the microscope.

Abstract: In an optical deflecting device with an optical bridge and with two optical sub-units which can be rotated relative to the optical bridge, the optical sub-units are, in the datum position, aligned in a manner such that the optical entrance axis of the first optical sub-unit is substantially perpendicular to the optical exit axis of the second optical sub-unit and substantially parallel to the optical axis of the optical bridge. This arrangement enables a light beam to be deflected without altering the orientation of the image.

Abstract: A magnetic coupling comprises two parts of an optical instrument, for example, of a microscope, which are to be releasably coupled together. A locating surface is formed on one part, this surface comprising one or more areas defined by bodies composed of a magnetic material which are spaced apart at intervals, the other part comprising a locating surface comprising areas defined by bodies composed of a material which can be magnetized. In order to avoid mechanical shocks caused by a powerful magnetic attraction as the parts are coupled, the material which can be magnetized, and which is associated with one of the locating surfaces, is confined to one or more areas of this surface, the arrangement of these areas corresponding to that of the areas on the locating surface. Other parts of the locating surface are composed of a material which cannot be magnetized.