Abstract: Apparatus for presenting a stereoscopic image to a viewer, the apparatus comprising: a stereoscopic video system comprising: first and second image sensors for acquiring, respectively, first and second images of a scene; a display system for displaying the first image to the first eye of the viewer and the second image to the second eye of the viewer; and parallax adjusting means for adjusting the parallax between the first and second images.

Abstract: Apparatus for presenting a stereoscopic image to a viewer, the apparatus including an endoscope; and a stereoscopic video camera optically connected to the endoscope, wherein the stereoscopic video camera includes first and second optical channels for acquiring, respectively, first and second images of a scene from the endoscope; first and second image sensors for acquiring, respectively, the first and second images from the first and second optical channels, the first and second image sensors being positioned along an axis; and parallax adjusting means for adjusting the parallax of a stereoscopic image acquired by the first and second image sensors and presented on a display.

Abstract: A stereoscopic coupler for mechanically and optically coupling an endoscope to a portion of a camera, the stereoscopic coupler including means for mechanically and optically coupling the stereoscopic coupler to an endoscope; and means for mechanically and optically coupling the stereoscopic coupler to a portion of a camera; wherein the stereoscopic coupler includes a pair of optics; a mechanical actuator for operation by a user; and means for physically moving the pair of optics as a unit in response to movement of the mechanical actuator by the user.

Abstract: A stereoscopic coupler for mechanically and optically coupling an endoscope to a portion of a camera, the stereoscopic coupler comprising: means for mechanically and optically coupling the stereoscopic coupler to an endoscope; and means for mechanically and optically coupling the stereoscopic coupler to a portion of a camera; wherein the stereoscopic coupler comprises: a pair of optics; a mechanical actuator for operation by a user; and means for physically moving the pair of optics as a unit in response to movement of the mechanical actuator by the user.

Abstract: Apparatus for presenting a stereoscopic image to a viewer, the apparatus comprising: a stereoscopic video system comprising: first and second image sensors for acquiring, respectively, first and second images of a scene; a display system for displaying the first image to the first eye of the viewer and the second image to the second eye of the viewer; and parallax adjusting means for adjusting the parallax between the first and second images.

Abstract: Protective eyewear for protecting the eyes of a user, the protective eyewear comprising: at least one transparent surface for disposition in front of the eyes of the user, wherein the at least one transparent surface is formed out of a material adequate to constitute protective eyewear; and a frame for holding the at least one transparent surface in front of the eyes of the user; wherein the at least one transparent surface comprises a left 3D lens for disposition before the left eye of the user and a right 3D lens for disposition before the right eye of the user.

Abstract: An endoscope includes a focusing mechanism having a focus control element at a proximal end of the endoscope and a mechanical coupling connecting the focus control element to an image transmitting device (e.g., an electro-optical sensor or one or more optical fibres) mounted at a distal end of an elongated insertion section of the endoscope. Rotation of the focus control element moves the image transmitting device with respect to a lens assembly of the endoscope to focus the image received by the lens assembly. The focus control element may be disengaged from the mechanical coupling by pulling it axially along the length of the insertion section whereby the focusing mechanism may be easily disassembled.

Abstract: An apparatus for continuously adjusting the corona discharge currrent of a pair of electrodes exposed to an atmosphere of gaseous impurities, particularly halogen. The device consists of a power supply to cause a corona current to flow in a pair of electrodes in series with a summing resistor. Any change in the gaseous impurities which causes a change in the corona current is sampled in the resistor, detected, delayed, amplified and fed back in proper phase to the control element of the power supply to cause the corona current to remain constant. During the finite delay time the change in corona current causes an audible alarm to sound until the corona current is restored to the new level of impurity concentration. The corrective action is continuous for any level of impurity concentration.