72results about How to "Increase deflection angle" patented technology

A deflector mirror is disclosed that includes a mirror substrate configured to vibrate in a reciprocating manner on beams as a torsional rotary shaft so as to deflect a light beam emitted from a light source. The mirror substrate includes multiple regions in each of portions thereof extending from the torsional rotary shaft to respective ends of the mirror substrate, the regions being different in flexural rigidity.

In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimize the cost of the illumination optics and the size of the display unit of the present invention, the light source is placed orthogonal to the rows (or columns) of the array, and/or the light source is placed orthogonal to a side of the frame defining the active area of the array. The incident light beam, though orthogonal to the sides of the active area, is not however, orthogonal to any substantial portion of sides of the individual micromirrors in the array. Orthogonal sides cause incident light to diffract along the direction of micromirror switching, and result in light ‘leakage’ into the ‘on’ state even if the micromirror is in the ‘off’ state. This light diffraction decreases the contrast ratio of the micromirror. The micromirrors of the present invention result in an improved contrast ratio, and the arrangement of the light source to micromirror array in the present invention results in a more compact system. Another feature of the invention is the ability of the micromirrors to pivot in opposite direction to on and off positions (the on position directing light to collection optics), where the movement to the on position is greater than movement to the off position. A further feature of the invention is a package for the micromirror array, the package having a window that is not parallel to the substrate upon which the micromirrors are formed. One example of the invention includes all the above features.

In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimize the cost of the illumination optics and the size of the display unit of the present invention, the light source is placed orthogonal to the rows (or columns) of the array, and/or the light source is placed orthogonal to a side of the frame defining the active area of the array. The incident light beam, though orthogonal to the sides of the active area, is not however, orthogonal to any substantial portion of sides of the individual micromirrors in the array. Orthogonal sides cause incident light to diffract along the direction of micromirror switching, and result in light ‘leakage’ into the ‘on’ state even if the micromirror is in the ‘off’ state. This light diffraction decreases the contrast ratio of the micromirror. The micromirrors of the present invention result in an improved contrast ratio, and the arrangement of the light source to micromirror array in the present invention results in a more compact system. Another feature of the invention is the ability of the micromirrors to pivot in opposite direction to on and off positions (the on position directing light to collection optics), where the movement to the on position is greater than movement to the off position. A further feature of the invention is a package for the micromirror array, the package having a window that is not parallel to the substrate upon which the micromirrors are formed. One example of the invention includes all the above features.

A micro-electromechanical scanner is disclosed for the efficient, controlled deflection of light beams. The device comprises a moving rotor, a suspension system, and a stator. The rotor comprises a closed-circuit coil and a mirror. The suspension system may be, for example, a set of torsion bars on which the rotor is mounted. The stator may be, for example, a rectangular frame holding the suspension system. When placed in a constant magnetic field and excited by an alternating magnet field, the rotor oscillates at the frequency of the alternating magnetic field, All else being equal, the highest deflection angles occur at the natural mechanical resonance frequency of the rotor-suspension combination. Compared to conventional devices, the novel device can be smaller, can be less expensive, can consume less power, and may exhibit higher deflection angles over a given time scale than other micromechanical devices operating on different actuation principles. The novel device may be used, for example, to replace the scanning devices currently used in laser printers, laser bar-code readers, and laser image projectors (e.g., large screen televisions). The control electronics may optionally be manufactured on the same device, eliminating the need for a separate controller and reducing costs.

In an optical deflector including a mirror, a movable frame supporting the mirror, a first piezoelectric actuator for rocking the mirror with respect to a first axis of the mirror, a support body supporting the movable frame, and a second piezoelectric actuator for rocking the mirror through the movable frame with respect to a second axis of the mirror, at least one piezoelectric sensor is provided for sensing rocking vibrations of the mirror caused by the first and second piezoelectric actuators. The second piezoelectric actuator includes a pair of meander-type pieoelectric actuators opposite to each other with respect to the first axis. Each of the second meander-type piezoelectric actuators includes a plurality of piezoelectric cantilevers folded at every cantilever and connected from the support body to the movable frame in parallel with the first axis. The piezoelectric sensor is incorporated into an outermost one of the piezoelectric cantilevers.

A piezoelectric/electrostrictive device includes a functional element. The functional element includes a base portion; a deformable portion assuming the form of a thin plate and extending from the base portion to thereby form a plane; a piezoelectric/electrostrictive element formed on the deformable portion; and a reflective portion extending from the deformable portion so as to form an active plane intersecting with the plane of the deformable portion, and having a light-reflecting member disposed on the active plane. Operation of the piezoelectric/electrostrictive element causes the deformable portion to be deformed in a direction substantially perpendicular to the plane of the deformable portion to thereby change a reflection angle of light reflected from the reflective portion.

The invention provides a control mechanism for a rapid deflection reflection mirror with the rotation center arranged at the reflection surface and a method thereof. The control mechanism comprises a first driving mechanism and a third driving mechanism which are arranged at the two ends of an X-axis of deflection and symmetrical about a Y-axis of deflection, and a second driving mechanism and a fourth driving mechanism which are arranged at the two ends of the Y-axis of deflection and symmetrical about the X-axis of deflection. The first driving mechanism is connected with a mirror supporting structure via a first flexible hinge perpendicular to the first driving mechanism. The structure and the size of the second driving mechanism, the third driving mechanism and the fourth driving mechanism are identical to those of the first driving mechanism, and the second driving mechanism, the third driving mechanism and the fourth driving mechanism are connected with the mirror supporting structure via a second flexible hinge, a third flexible hinge and a fourth flexible hinge respectively. The side surface of the reflection mirror is fixed on the mirror supporting structure. The mirror surface of the reflection mirror and the X-axis of deflection and the Y-axis of deflection are arranged in the same plane. The invention also provides a control method of the control mechanism. The control mechanism has relatively large deflection range and also has the characteristics of high response speed, small size and low weight.

A configurable deflection system for an incident microwave frequency beam exhibiting a wavelength contained in a band of wavelengths corresponding to the microwave frequencies, comprising: a first and a second diffractive dielectric component suitable for each performing a rotation about a rotation axis Z, the deflection system being suitable for generating a microwave frequency beam by diffraction of the incident microwave frequency beam on the first and second components, the microwave frequency beam being oriented according to an angle that is a function of the angular positioning between the first and said second diffractive components, the first and second components respectively exhibiting a first and second periodic structure of first and second periods according to a first and second axis, the first and second structures respectively comprising a plurality of first and second primary microstructures formed respectively on a first and second substrate of first and second substrate refractive indices.

The invention relates to an electric-control wide-angle light scanning device and an array thereof. The device is a container for a fluid prism which can contain a conductive fluid, an insulation fluid and another conductive fluid, such as a fluid bath. The upper end and the lower end of the fluid bath are respectively provided with a transparent upper cover plate (1) and a transparent lower cover plate (2), and a fluid prism cavity used for storing fluid prism materials is formed by the space between the transparent upper cover plate (1) and the transparent lower cover plate (2). Three indissoluble fluids, namely a first conductive fluid (3), an insulation fluid (4) and a second conductive fluid (5) are respectively arranged in the fluid bath from top to bottom. The three fluids form fluid prism media and respectively have different refractive indexes. A left wall (6) and a right wall (7) of the fluid bath are made of conductive materials and are respectively used as a left electrode and a right electrode, and an upper electrode and a lower electrode are respectively arranged in an upper transparent conductive layer (10) on the upper cover plate and a lower transparent conductive layer (11) on the lower cover plate. Under the control of a voltage-controlled system (11), the device forms an edge-adjustable fluid prism system.

A belt tensioner of a vehicle occupant restraint system, especially a belt buckle tensioner, comprises a coupling member (12) to the vehicle seat belt, a drive unit (18), a flexible tension transmitting means (14) and a deflector (26). The flexible tension transmitting means (14) is connected at least indirectly to the coupling member (12) and is moved via the drive unit (18) in the event of tensioning. The deflector (26) deflects the tension transmitting means (14) in the direction of the coupling member (12). The tension transmitting means (14) is moved along the deflector (26) in the event of tensioning. According to the invention, the drive unit (18) is coupled in terms of drive to the deflector (26) such that the drive unit (18) moves the deflector (26) upon activation and thus displaces the coupling member (12) in the tensioning direction (R).

The invention relates to solar lamps, in particular to a solar lamp capable of being cleaned easily. The solar lamp capable of being cleaned easily comprises a lamp pole and a lamp body arranged on the lamp pole. The lamp body comprises a light-emitting mechanism and a cooling mechanism. The cooling mechanism comprises a solar cell cooling plate, an LED lamp cooling plate and a vertical water storage pipe. The solar cell cooling plate is fixed to the top of the vertical water storage pipe. The LED lamp cooling plate is located at the bottom of the vertical water storage pipe. The LED lamp cooling plate is provided with a water collecting notch. The water collecting notch is connected with a flow guide pipe and further communicates with the vertical water storage pipe through the flow guide pipe. A torsional spring is connected between the lamp body and the lamp pole. The lamp body is further connected with a balancing weight. The vertical water storage pipe is provided with a water storage part and a deflection part. The deflection part is located above the water storage part and communicates with the water storage part. When the water storage part is used for storing water, the center of gravity of the lamp body can be kept stable. When the deflection part is used for storing water, the center of gravity of the lamp body can deflect. The solar lamp capable of being cleaned automatically is provided.

An actuator includes a frame-shaped first mass portion; a supporting portion that supports the first mass portion and takes the shape of a frame so as to surround a perimeter of the first mass portion; a pair of first elastic portions coupling between the first mass portion and the supporting portion so that the first mass portion is supported by the supporting portion; a second mass portion provided inside the frame-shaped first mass portion; a pair of second elastic portions coupling between the second mass portion and the first mass portion so that the second mass portion is supported by the first mass portion; and a driver for rotating the first mass portion. The driver includes a ferromagnet provided on the first mass portion in a position separate from a rotation central axis of the first mass portion; a coil formed along the rotation central axis of the first mass portion and the supporting portion so as to surround and orbit a perimeter of the ferromagnet if the first mass portion is seen from above; and a voltage application unit for applying a voltage to the coil. An operation of the voltage application unit included in the driver causes the coil to generate a magnetic field. The generation of the magnetic field causes displacement of the ferromagnet relative to the coil. The displacement of the ferromagnet causes the first mass portion to rotate while torsionally deforming the pair of first elastic portions. The rotation of the first mass portion causes the second mass portion to rotate while torsionally deforming the pair of second elastic portions.

Multiple designs and methods for aerodynamic separation nozzles and systems for integrating multiple aerodynamic separation nozzles into a single system are disclosed herein. These aerodynamic separation nozzles utilize a combination of aerodynamic forces and separation nozzle structure to induce large centrifugal forces on the fluids that in combination with the structure of the nozzle are used to separate heavier constituents of the fluid from lighter constituents, and more particularly to separate a first or liquid phase from gaseous phases. In some embodiments a number of separation nozzles are combined into a single system suitable for dynamic processing of a process gas. In other embodiments the separation nozzles are temperature controlled to condition the incoming gas to a temperature in order to encourage a phase change in certain constituents of the gas to occur within the nozzle to further enhance separation.

The invention concerns inkjet printers with binary continuous jet, the printing principle of which is based on the differential deflection of jets or jet segments. According to the invention, by virtue of a judicious selection of pulse periods of the electrical generator, the print speed of such printers is optimised while guaranteeing precision of the two deflection levels (binary).

The present disclosure generally pertains to systems and methods for an improved pipe joint. The system includes a first pipe having a bell socket end and a second pipe having a male or spigot end. The bell socket end of the first pipe is configured to include an inner groove within which a sealing member may be inserted. The bell socket end of the first pipe further includes a pivot cavity. The spigot end of the second pipe may be inserted into socket end of the first pipe to form an unrestrained, push-fit, ring-seal assembly when operatively joined, such that a sealing member is located within the inner groove, the sealing member having a sealing surface that is longitudinally related with the pivot point of the two pipes thereby allowing a high joint deflection angle while maintaining a relatively small pipe bell and sealing member mass.

An optical switch of the present invention is for deflecting a light given to an input channel waveguide by first and second optical deflecting sections arranged respectively on the former and latter stages of a slab type optical waveguide section, so that a deflection angle by the first optical deflecting section is symmetrical to that by the second optical deflecting section, to guide the light to a desired output channel waveguide. The first and second optical deflecting sections each includes a half-wave plate between input side upper electrode portions and output side upper electrode portions each of which is formed with prism type electrodes, and the slab type optical waveguide also includes a half-wave plate on the center thereof. As a result, by forming an optical deflection element using a material having the polarization dependence and a high electro-optic effect, it becomes possible to achieve the reduction of drive voltage and an increase of deflection angle, and also, to reduce a loss occurred due to the polarization dependence of the deflection angle.