A scanner for scanning a dental site comprises a base, a detector mounted to the base, and an optical element to redirect light reflected off of the dental site towards the detector along a detection axis in a first direction. Two or more flexures couple the optical element to the base, wherein thermal expansion or contraction of the optical element with respect to at least one of the detector or the base bends each flexure of the two or more flexures in a respective second direction without bending the flexure in a respective third direction approximately perpendicular to the first direction and the respective second direction, wherein the two or more flexures maintain an alignment of the optical element to the detector with changes in temperature.

A deployment system for an inspection vehicle operable in a housing having a liquid medium is disclosed in the present application. The deployment system includes a mount connectable to the housing through an aperture formed in a wall thereof. An extendable arm is connected to the mount and positioned within the housing. A tether is slidably coupled to the extendable arm and adapted to connect with the inspection vehicle. A control mechanism is operable to control deployment of the tether and the position of the extendable arm.

A mobile platform uses a charge accumulation control system to control a charge accumulation while the mobile platform is in the tank. Alternatively or additionally, the mobile platform includes a retrieval system having a buoyant body, a primary tether, and a secondary tether. Alternatively or additionally, an electrical cable is used to reduce a voltage difference between the mobile platform and the tank or other structure by electrically connecting to an electrically conductive member on the mobile platform.

An insertion assisting instrument has an outer diameter dimension set to satisfy a relationship of xb<xc assuming that an insertion assisting instrument is projected on X-Y coordinates such that a point on a circumference where the insertion assisting instrument has a largest outer diameter (that is, a point on an outer periphery of a proximal-end-side tapered surface at a distal end) is set as an origin and the proximal-end-side tapered surface is brought into contact with an X axis, coordinates of a second point B, which is most distal from the X axis on the circumference where the insertion assisting instrument has the largest outer diameter are (xb, yb), and coordinates of a third point C, which is most proximal from the X axis on a circumference at the proximal end of the insertion assisting instrument, are (xc, yc).

A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.

An endoscope objective optical system that is to be combined with a solid image pickup element includes, in order from an object side, a planoconcave negative lens, an absorption-type filter, an aperture stop, and a planoconvex positive lens.

The electronic endoscope has an endoscope shaft (2) and an electronics housing (3), and also an optical waveguide (5) having optical fibers (4). The endoscope shaft (2) is formed on the electronics housing (3) or connected thereto, the electronics housing (3) being closed so as to be vapor-tight and liquid-tight from outside. The optical waveguide (5) extends between a distal end (6) of the endoscope shaft (2), directed away from the electronics housing (3), and a light source (7) arranged in the electronics housing (3). The optical waveguide (5) has, at its proximal end (8), an optical waveguide connector (9), with which a light exit point (10) from the electronics housing (3) is closed off in a vapor-tight and liquid-tight manner.

An optical system comprises a detector to determine one or more intensities of light impinging on one or more locations of the detector and an optical element to direct light towards the detector along a detection axis. The detector and optical element are coupled together by three or more substantially flat flexures respectively defining three or more flexure planes parallel to the detection axis. The three or more substantially flat flexures maintain an alignment of the optical element to the detector with changes in temperature.

An endoscope apparatus includes a power supply section configured to supply first power and second power to a load apparatus provided at a distal end portion of an insertion portion from an apparatus body, and a power supply control section configured to control the power supply section by instructing the power supply section to determine a first command signal based on a target voltage and a feedback voltage which is a voltage of the first power fed back from the distal end portion to the apparatus body so as to output the first power in accordance with the first command signal, and instructing the power supply section P to determine a second command signal based on the first command signal so as to output the second power in accordance with the second command signal.

An endoscopy device (1) with an endoscope (2) and a camera control unit (12) is provided. The endoscope (2) has an endoscope shaft (3) and an endoscope head (4), and the endoscope shaft (3) is made of a metallic material. Electronics (8) are arranged in the endoscope head (4) and are connected to an attachment cable (10), and the electronics (8) and the attachment cable (10) are shielded by an electronics shield (14). A galvanic barrier (15) is set up between the electronics shield (14) and the endoscope shaft (3) and couples the endoscope shaft (3) capacitively to the electronics shield (14).