Abstract: There is disclosed a method of splitting a parallel beam of light indicative of the imaging of an object viewed by a microscope to enable par focal registration of said image at first and second camera locations. A parallel beam of light is directed to propagate through a first input aperture where the beam is converged and then bent at a predetermined distance from the aperture at an angle of 90.degree. to direct said bent beam to the second location where a television camera is positioned to receive the bent beam in proper image orientation and at par focal registration. The converged beam is then diverged as directed through said input aperture and propagated to the first location where a camera is placed for receiving the diverged beam at par focal registration.

Abstract: A microscope body has coupled thereto a lens with the axis of said lens relatively transverse to the optical axis of said microscope. A mirror is positioned with respect to said lens to deflect any light proprogating through said lens relatively parallel to the optical axis of said microscope and through the objective lens of said scope to the object plane; and a fiber optic cable is directed at one end to propagate light from a remote source through said lens and thence, to said mirror. Means are provided to prevent spurious light or reflections from the surface of the objective lens from appearing at the visual plane of said microscope.

Abstract: There is disclosed a universal connector assembly for use with a fiber optic light source to enable accommodation of fiber optic cables of varying diameters. The connector assembly includes a central aperture directed from a top to a bottom surface. A plurality of transverse slots communicate with the aperture. Each slot contains a clamp member which is biased by means of a spring to enable the clamp members to coact with each other within the aperture during a first mode. A cable or rod is inserted in the aperture to force the clamp members and associated springs radially along the slots. When the rod is inserted in the aperture, the springs urge the clamp members to coact with and retain the rod or cable within the aperture to thereby assure an efficient and reliable coupling mechanism capable of accommodating any one of a given number of varying diameter cables.

Abstract: An optical coupler or photo adapter unit has an input port located on a first surface of a housing for receiving a parallel beam of light as may be derived from a microscope or beam splitter. The input port is associated with a first lens for converging the parallel beam. A first output port is located on a surface of the housing transverse to said first surface; and a second output, relatively coaxial with said first port, is located on a surface relatively parallel to the first surface. A second lens is located adjacent the second output port and is operative to diverge the light as transmitted through the second output port as received from said first port and lens.

Abstract: There is disclosed a rotary switch assembly comprising a lamp plate adapted to accommodate a plurality of switchable lamps. A power contact plate is positioned above said lamp plate and contains spring loaded contacts which coact with terminals associated with said lamp plate to enable energization of any selected one of said plurality of lamps.The two plates are positioned and held in alignment by means of a clamping ring into which both plates are located. The clamping ring assures proper detenting of the rotatable lamp accommodating plate to ascertain reliable switching and further assure that any bulb selected will have its optical axis properly aligned.

Abstract: There is disclosed a light assembly or similar apparatus which is adjustable by means of a ball and socket assembly incorporating an elastomeric "O" ring which abuts against the periphery of the ball when a ball accommodating sectionalized socket assembly is clamped together.