A sight glass for mounting in a hole, provided with radially inwardly extending protrusions, in a sheet material wall of a housing, for example a switchgear housing, includes: a body with a mounting surface and a cylindrical wall arranged on the mounting surface and extending perpendicularly from the mounting surface; a plurality of L-shaped slots in the radially outer surface of the cylindrical wall; and a gasket arranged on the mounting surface, the gasket enclosing the cylindrical wall. The body and cylindrical wall are of a monolithic transparent material.

A terminal display assembly and a mobile terminal are disclosed. The terminal display assembly may include a display screen, a light transmission and a seal ring. The display screen may define a through hole penetrating through the display screen in a thickness direction of the display screen. The light-transmission cover plate may be disposed on the display screen and cover the through hole. The seal ring may be disposed in the through hole. The seal ring may include a bottom and an outer wall. The bottom may be disposed on the light-transmission cover plate. The outer wall may be connected to the bottom, and at least a part of the outer wall may be disposed on the display screen.

The invention relates to a sight glass cover (10) with an integrated cleaning device, for closing an opening (14), comprising a sight glass (18), which has a glass edge (57) and a glass inner side (20), wherein the glass inner side (20) is facing the opening (14) when a sight glass cover (10) is placed on the opening (14), and a frame device (16), which encloses the sight glass (18) at least in the region of the glass edge (57), wherein the frame device (16) has a frame inner side (32), which is facing away from the glass inner side (20) and lies against a wall region 34 surrounding the opening (14) when a sight glass cover (10) is placed on the opening (14), a cleaning device (22), which is formed in the frame device (16) and has at least one channel (24) with an inlet opening (26) and an outlet opening (28) at a distance from the inlet opening (26), wherein the outlet opening (28) of the channel (24) is formed between the glass inner side (20) and the frame inner side (32), and the channel (24) is designed and formed in such a way that the glass inner side (20) of the sight glass (18) can be at least partially wetted with a medium (30) fed into the channel (24) by way of the inlet opening (26) and leaving by way of the outlet opening (28). This is a way of providing a cover with a sight glass in the case of which the sight glass can be cleaned in a closed state of the cover with little effort.

The disclosed technology is directed to an endoscope comprises a first adhesive layer disposed on a surface of an outer cladding member and having at least a portion exposed outwardly. A display portion includes a second adhesive layer disposed on a portion of the outer cladding member which is covered with the first adhesive layer. The second adhesive layer having at least a portion which is to be exposed outwardly deteriorates due to frequent cleaning, disinfecting, and/or sterilizing. The second adhesive includes a color different from the first adhesive layer. The display portion is defined by a color that is different from a color of the outer cladding member. The display portion includes characters or signs made of the second adhesive layer.

A method for production of window elements which can be soldered into a housing in a hermetically tight manner with optical coating and free-form window elements are disclosed. After application of optical coatings, a protective layer is applied to the optical coating, the two layer systems are selectively removed by means of a machining beam of high-energy radiation for the purpose of ablation of a desired optically active free-form surface for window elements with any geometric shape through a localized machining beam in edge regions of the optically active free-form surface such that the protective layer remains on the optical coating as lift-off mask which is lifted off after applying a metallization for a solder layer by an etching process that acts selectively only on the protective layer but not on the optical coating, and the metallization remains only on the peripheral edge regions circumscribing the free-form surfaces.

A vehicle includes a body of the vehicle and a sensing system coupled to the body. The sensing system includes optical componentry and a glass material, where the glass material at least in part houses the optical componentry and the glass material is at least partially transparent to light at the wavelength of the optical componentry. Further the glass material has mechanical and performance properties that allow the sensing system to be positioned particularly low on the vehicle, at a position that may be of higher risk for damage from debris.

Apparatus, systems and methods for improving strength of a thin glass cover for an electronic device are disclosed. In one embodiment, the glass member can have improved strength by forming its edges with a predetermined geometry and/or by chemically strengthening the edges. Advantageously, the glass member can be not only thin but also adequately strong to limit susceptibility to damage. In one embodiment, the glass member can pertain to a glass cover for a housing for an electronic device. The glass cover can be provided over or integrated with a display, such as a Liquid Crystal Display (LCD) display.

Glazing unit for underwater objects windows consisting of panes of mineral glass placed in circumferential clamp ring and on borders between panes of mineral glass have circumferential spacers, which have sealing in contact area with pane of mineral glass, characterized in that, glazing unit have at least two panes of mineral glass (1) separated by a layer of low compressible liquid (2) while constructed set of panes of mineral glass (1) with circumferential spacers (3) and sealing (4) are border with circumferential seal (5) clamped by circumferential clamp ring (6).

A sight glass for observation of industrial applications using a non-glass lens.

A fastening structure of a brittle-fracturable panel material includes a first fastening flange, a second fastening flange, and a light transmission window panel made of a brittle-fracturable panel material, wherein the light transmission window panel is nipped between the first fastening flange and the second fastening flange, and both fastening flanges are air-tightly fitted and fastened.