620 results about "Sharp angle" patented technology

A head-up display includes a projection system and a window having a target area where a reflective polarizer is positioned to reflect light from the projection system to a viewing area. Light from the projection system is p-polarized and strikes exposed window surface(s) at an acute angle to reduce or eliminate multiple or "ghost" images. The acute angle is closely matched to a Brewster angle of the exposed window surface(s). The reflective polarizer includes a multilayer stack with refractive indices of individual layers chosen to reflect p-polarized light substantially more than s-polarized light over a wide angular range that includes the acute angle. The reflective polarizer also can reflect infrared light to reduce cabin heating from solar radiation.

A keyboard includes rows of keys defining a keyboard axis and side borders of the keyboard, the keyboard axis disposed mediate the side borders of the keyboard, the rows of keys disposed in series with each other along the keyboard axis, and the keyboard axis being disposed at an acute or obtuse angle relative to a user of the keyboard and being generally aligned along a length of an arm of the user holding the keyboard. Each key may be also defined by a unique region of numeric values or a unique region of color pixels allowing ease in changing keyboard location, size and orientation.

Footwear with a sole formed from an elastomeric material whose grip is improved on ground where the interface may include an intermediate foreign substance, this sole comprising lugs (31) separated from each other by grooves (35). The walls of the grooves (35) are cut into the thickness of the elastomeric material and delimit patterns with sharp angles in the profile of said lugs (31) which can pierce said foreign substance to establish direct dry contact between the two surfaces. Each lug (31) forms a star-shaped pattern having at least five arms in the form of stems (32) distributed over its, profile and each stem (32) is orientated radially towards the outside of the pattern and terminates in an end. Each stem (32) is separated from its neighbor by a recess (38) in the profile of the lug. Finally, each lug (31) has a stem (32) engaged in a space of the adjacent groove (35) which is delimited by a recess (38) between two neighboring stems in the profile of a second lug neighboring the first lug.

The invention relates to a compact transmitter optical sub-assembly (OSA), which can be used in small form factor optical transceivers. To limit back reflections from entering the laser cavity, the laser is disposed on a silicon optical bench (SiOB) at an acute angle to the longitudinal axis of the OSA. A portion of the light from the laser cavity passes through the back end of the laser cavity for measuring by a monitor photodiode. A rear beam steering lens redirects the portion of light into a v-groove in the SiOB and off of a reflective surface formed in the end thereof to the monitor photodiode, which is positioned face down over the v-groove.

An anti-bird roosting device for protecting an area, comprising at least a pair of cooperating base elements mounted on the area to be protected, and a plurality of projecting spikes, supported on the base elements and projecting away therefrom into a space above the area to be protected. The spikes are provided in a pattern of interspersed combinations of vertical, obtuse and acute angle-forming projections, in a high spike density that prevents roosting in the protected space. Thus, each point in the area to be protected is defended by more than one spike, each spike coming from a different direction, so as to cross-defend each other, creating a perimeter envelope defense of the air volume surrounding the base elements. Each device is easily and inexpensively prepared as a continuous mesh, whose dimensions can be constructed in standard sizes or in accordance with the needs of the user. The element diameter is typically approximately two millimeters. The small element diameter makes the entire device hard to see from a distance so that it does not detract from the building's aesthetics.

A system, method, and device for hitching a trailer to a vehicle are disclosed. The exemplary system may have a receiving plate with a distal end formed with or coupled to the socket portion. The receiving plate may extend to a proximal end from the socket at an incline. The proximal end may be wider than the distal end. Two support members may extend substantially beyond a socket portion. Two side plates may extend at a downward angle from each side edge of the receiving plate between the proximal end and proximal end. The two side plates may extend downwards to interfere with sharp angled turning.

The invention discloses a display module and a display device. The display module comprises a backlight module and a display panel that are arranged facing each other, and also comprises a bore, whichruns through at least the backlight module; the backlight module comprises a light source, at least one layer of optical film, at least one adhesive frame and at least one piece of shading tape; thebore comprises at least a top and a bottom; the adhesive frame comprises at least a first side and a first surface and an angle between the first surface and the first side is a sharp angle; the shading tape comprises a first shading part and an extended shading part that are formed integrally; and the first shading part is attached to a side, near to the display panel, of the adhesive frame and the extended shading part is attached to the first side. The display device comprises the display module described above. According to the invention, light leakage of the backlight module at the bore is avoided by the adhesive frame arranged around the bore and the shading tape attached to the adhesive frame, and the attachment of the shading tape along the first side of the adhesive frame is realized conveniently, thereby improving the light leakage problem of the adhesive frame.

The invention discloses a smoke and fire detection device based on videos, which is characterized by acquiring the edge shape of the foreground area by a shooting unit, a foreground extracting unit and a foreground edge extracting unit; judging whether the foreground area has flame sharp angle feature by a sharp angle detecting unit and a sharp angle feature judging unit; judging whether the foreground area has the smoke center movement feature by a center movement feature detecting unit and a center movement feature judging unit; and finally judging whether the smoke and fire exist by a smoke and fire judging unit according to the results obtained by the sharp angle feature judging unit and the center movement feature judging unit. The device and the method have the advantages of high recognition accuracy, low misdeclaration rate and missing report rate, capability of effectively removing external factor interference such as illumination, shadow, etc.

A cable having an electrically conducting wire with a cross sectional shape defined by a simple closed curve having from three to eight concave portions separated by an equal number of convex portions. The simple closed curve has no point where the radius of curvature is less than one-sixth (⅙) of an overall radius of the wire and no point where adjacent curves or lines intersect at an angle. The alternating concave and convex portions of the cable's cross-sectional shape may have substantially the same curvature. The cross-sectional shape of the cable avoids sharp angles and fight curves.

The invention provides a method for repairing surface defect of a hot rolling support roll, and relates to the technical field of repairing a roll for hot rolling equipment. The method comprises the following steps: 1, the depth and the area of the defect are determined; 2, the defect part is punched, and the deflect metal layer is removed from the surface of the roll; 3, whether the deflect is clearly treated is checked; and 4, the punching part and parts around the punching part are polished to form a smooth curved surface and the repair is completed. During polishing, edges of all sharp angles are polished to be smooth, and paraboloids are the best to be formed around the deflect and the joint between the deflect and a roll body. The method makes polishing repair on local deflect parts only, and after repairing, the diameter of the roll body of the support roll is not changed, thereby lowering roll wear, prolonging the life cycle of the support roll, and further improving yield of a rolling machine.

An intraocular lens (IOL) for insertion in a capsular bag of an eye includes an optic for focusing light and a movement assembly coupled to the optic. The movement assembly is adapted to cooperate with the capsular bag to effect accommodating movement of the optic. The movement assembly includes one or more elongated fixation members coupled to a periphery of the optic and adapted to convert radial movement of the capsular bag to axial movement of the optic. The fixation members extend spirally at least half-way around the optic. Angled transition sections may be provided between each fixation member and the optic periphery. The anterior and posterior edges of the optic periphery may have relatively sharp angles to reduce epithelial cell growth.

The invention discloses a touch screen and a display device. The touch screen comprises first strip electrodes and second strip electrodes, which are arranged in different layers in a cross manner, wherein the side edges, located at the two sides of the extension direction, of each first strip electrode located on the upper layer of the corresponding second strip electrode are provided with wavy structures, and an included angle between each of all fold line segments forming the wavy structures and the extension direction of the first strip electrodes is an acute angle; in a touch control time period, the first strip electrodes are used for loading touch control scanning signals, and the second strip electrodes are used for coupling voltage signals of the touch control scanning signals and outputting the voltage signals; or the second strip electrodes are used for loading the touch control scanning signals, and the first strip electrodes are used for coupling the voltage signals of the touch control scanning signals and outputting the voltage signals. The side edges, at the two sides of the extension direction, of each first strip electrode are provided with the wavy structures, so that Moire patterns resulting from interference of light caused by regular patterns of the edges of the first strip electrodes can be reduced, then, the visibility of the Moire patterns on the surface of the touch screen is eliminated, and the quality of display of the touch screen is improved.

The invention discloses a method for processing an open-web sharp-angled rhomboid tube. The open-web sharp-angled rhomboid tube comprises a first side, a second side, a third side and a fourth side which are sequentially connected, wherein the fourth side and the first side are in butt joint to form a sharp angle. The processing method comprises the following steps of: A, rolling areas corresponding to the first side and the fourth side on two sides of a steel band by a roller to enable partial areas of the first side and the fourth side to become arc faces; B, rolling and bending the junction of the first side and the second side and the junction of the fourth side and the third side; C, rolling and bending the junction of the second side and the third side by the roller to enable an inclined angle of the second side and the third side to be gradually reduced until the first side and the fourth side are nearly closed; D, carrying out stitch welding to completely close and weld the first side and the fourth side together; E, scraping a vertex angle at the welded part into a sharp angle by a scraper; and F, reshaping the first side and the fourth side into a plane and simultaneously reshaping the sizes and inclined angles of various sides to the final requirements.

A plastic bottle includes: a body which extends longitudinally along a central axis from the neck to the lower end thereof and which has a pre-determined thickness, and a base (2) including an apron (3) which is connected to the lower end of the body and which extends to a peripheral bearing area. In addition, a dome (7) extends from the peripheral bearing area to the apex (7a) located essentially on the central axis and grooves (9) extend radially between the apron and the dome, the grooves having a base line (9a). The direction of the base lines (9a) of the grooves forms a sharp angle with the direction tangential to the dome (7) at the point (9d) at which the base of the grooves (9) opens into the dome (7).

The invention is applicable to the field of an antenna and provides a bipolar feed source device and an antenna. The bipolar feed source device comprises a feed source horn, a round waveguide, a round-rectangle transition unit, a polarization rotating joint and a second input port that are connected sequentially, a pin unit arranged on the central axis line of the round waveguide and a first input port which is electrically connected with the round waveguide feed; the polarization rotating joint is a wave guide with a sharp angle in the polarization direction; the polarization rotating joint arranges the feed waveguide of the first input port and the feed waveguide of the second input port in the same plane by the round-rectangle transition unit. The bipolar feed source device adopts the waveguide-type polarization rotating joint, arranges the feed waveguides of two input ports in the same plane by the round-rectangle transition unit, realizes the excitation chamber of small size and small hole surface shielding and meets the requirements of low voltage standing wave ratio and high cross polarization discrimination rate simultaneously.

An electronic cigarette is provided, comprising: a battery sleeve, an outer tube, an internal threaded sleeve, an external threaded sleeve and an upper electrode; the upper electrode defining a first through hole therein, the external threaded sleeve defines a second through hole therein, the internal threaded sleeve includes a barrel and a ring step formed relative to a periphery of barrel, the ring step includes an upper end surface and a lower end surface, the upper end surface is a wave-shaped end surface, the lower end surface resists and is connected with the battery sleeve, an air admission passage is formed at a point between the upper end surface and the external threaded sleeve, and the air admission passage, the second through hole and the first through hole form an air flow loop. Thus the threaded copper component does not form sharp angles and is prevented from hurting users' bodies.

The invention discloses a large-scale three-dimensional (3D) ore drawing simulation model. The ore drawing model comprises a box, and the box is divided into an upper part and a lower part which are connected with each other, wherein, a base is arranged at the bottom of the lower part, the lower part comprises a plurality of layers, each layer is equipped with an admission passage, an admission passage port is arranged at an end part of the admission passage, a plurality of ore wall insertion slits are arranged on side walls at two ends of the lower part, and ore wall simulation boards are inserted into the ore wall insertion slits; and the box further comprises height-joined ore wall boards with sharp angles, and the height-joined ore wall boards are arranged in the ore wall insertion slits of the upper part. The large-scale 3D ore drawing simulation model integrates all functions of a two-dimensional (2D) ore drawing model; and by adopting the model, large-scale 3D ore drawing simulation test is realized, and the similarity of ore drawing simulation effect indexes in a stope is improved.