64results about How to "Significant decline" patented technology

An optical deflection device includes a substrate; a plurality of regulating members including upper portions including stoppers; a fulcrum member serving as an electrode; a plate member; and a plurality of electrodes. The plurality of regulating members, the fulcrum member, and the plurality of electrodes are provided on the substrate, with the plate member approximately opposite to the plurality of electrodes and movable in a space formed by the substrate, the fulcrum member, and the stoppers. The plate member includes unfixed edge portions, a light reflecting region, and a conductive layer electrically connected to the fulcrum member. By fixing at least a part of the plurality of electrodes to predetermined potentials and changing a potential of the fulcrum member, the plate member is displaced around the fulcrum member by electrostatic attraction force, and a light incident in the light reflecting region in a direction is deflected and reflected in another direction.

A mirror driving device can include: a mirror part having a reflection surface configured to reflect light; mirror support parts formed at portions of the mirror part diagonal to each other; and a first actuator and a second actuator placed so as to surround the mirror part, wherein the first actuator and the second actuator each have a structure in which a plurality of first piezoelectric cantilevers with a longitudinal direction oriented to a direction of a first axis and a plurality of second piezoelectric cantilevers with a longitudinal direction oriented to a second axis are coupled together so as to be folded, and each of the first actuator and the second actuator has one end connected to the mirror part via a relevant one of the mirror support parts and another end connected to a fixing part near the mirror support part to which the one end is coupled.

A beam direction controlling device (22; 30; 45; 60; 80), for controlling a direction of a light-beam emitted by a light-source (21) and passing through the beam direction controlling device (22; 30; 45; 60; 80). The beam direction controlling device comprises a first optical element (23, 31; 46; 61) having first (32) and second (33) opposing faces and being configured to change a direction of a plurality of parallel light-rays (40) incident on the beam direction controlling device (22; 30; 45; 60; 80) in an incident direction (r_i) at the first face (32) of the first optical element (23, 31; 46; 61) to a primary direction (r_p), different from the incident direction (r_i), at the second face (33) of the first optical element (23, 31; 46; 61); and a second optical element (24, 32; 47; 62) having first (36) and second (37) opposing faces, the second optical element (24, 32; 47; 62) being arranged with the first face (36) of the second optical element (24, 32; 47; 62) facing the second face (33) of the first optical element (23, 31; 46; 61), the second optical element (24, 32; 47; 62) being configured to change a direction of the plurality of light-rays from the primary direction (r_p) at the first face (36) of the second optical element (24, 32; 47; 62) to a secondary direction (r_s) at the second face (37) of the second optical element (24, 32; 47; 62) depending on points (41) of incidence of the light-rays on the first face (36) of the second optical element (24, 32; 47; 62). The beam direction controlling device is configured to allow relative movement between the first and second optical element for controlling the points of incidence of the light rays on the first face of the second optical element, thereby enabling control of the direction of the light-beam.

A vehicle light can resolve remarkable bright-dark boundaries formed between a far side and a near side of the light, thereby improving the near-side visibility for a driver. The vehicle light can include a light emitting device having an optical axis and a projection lens. The projection lens can include a light exiting surface that can project light beams emitted by the light emitting device while diffusing the light beams in both left and right directions when observed within a horizontal plane. The light exiting surface can include a left refraction surface that can project the light beams downward by a larger deflection angle with respect to a horizontal plane as the exit position of the light is farther away from the optical axis in the upper and lower directions when observed within a vertical plane. The light exiting surface can also include a right refraction surface that can project the light beams downward by a larger deflection angle with respect to the horizontal plane as the exit position is farther away from the optical axis in the upper and lower directions when observed within a vertical plane.

An actuator of the type employing a two-degree-of-freedom vibration system includes a first mass portion, a second mass portion, a pair of supporting portions, as least a pair of first elastic connecting portions which connects the first mass portion to the supporting portion so that the first mass portion can rotate with respect to the supporting portion, and at least a pair of second elastic connecting portions which connects the second mass portion to the first mass portion so that the second mass portion can rotate with respect to the first mass portion. The first mass portion is driven by the application of an alternating voltage, causing the second mass portion to rotate, and the frequency of the alternating voltage is set so as to be substantially the same as a lower resonance frequency of resonance frequencies of the two-degree-of-freedom vibration system at which the first mass portion and the second mass portion resonate. This makes it possible to provide the actuator capable of operating at high speed and at low voltage and achieving a large rotation angle.

An HMD device including an image-generating unit for generating a polychromatic image and deflection optics having first and second partial optics. The deflection optics project the image such tat it is perceivable by a user wearing the HMD device. The two partial optics each contain a diffractive optical unit for beam deflection, which are designed such that their dispersion errors compensate each other.

The actuator has a movable mass portion and a pair of drive mechanisms for driving the movable mass portion. Each of the pair of drive mechanisms includes a drive mass portion, a support portion for supporting the drive mass portion, a first elastic connecting portion interconnecting the drive mass portion and the support portion so as to allow the drive mass portion to be pivoted about a pivotal axis with respect to the support portion, and a second elastic connecting portion interconnecting the drive mass portion and the movable mass portion so as to allow the movable mass portion to be pivoted about a pivotal axis with respect to the drive mass portion. The first elastic connecting portion includes a pair of bending bars opposed to each other with interposing the pivotal axis of the drive mass portion therebetween. The first elastic connecting portion includes a pair of piezoelectric elements jointed respectively onto the pair of bending bars so as to bend the pair of bending bars in opposite directions to cause pivotal movement to the drive mass portion. The pivotal movement of the drive mass portion causes torsional deformation to the second elastic connecting portion so as to pivot the movable mass portion.

A mirror driver drives deflection mirror surfaces into a pivoting action at a frequency belonging to a first drive frequency band in which the high-frequency side of a first resonance frequency band partially overlaps the low-frequency side of a second resonance frequency band, so that the deflection mirror surfaces deflect a light beam. Hence, the deflection angles of light beams change, while canceling out each other the changes of the deflection angles of the light beams deflected by the deflection mirror surfaces owing to changes of resonance characteristics. Because of this, even when the resonance characteristics change, it is possible to stabilize the deflection angle of the light beam deflected by the first deflection mirror surface and further deflected by the second deflection mirror surface.

An actuator 100 of the type employing a two-degree-of-freedom vibration system includes: a pair of first mass portions 1, 11; a second mass portion 2 provided between the pair of first mass portions 1, 11; a pair of supporting portions 3, 3 for supporting the pair of first mass portions 1, 11 and the second mass portion 2; at least a pair of first elastic connecting portions 4, 4 which respectively connect the first mass portions 1, 11 to the supporting portions 3, 3 so that each of the first mass portions 1, 11 can rotate with respect to the supporting portions 3, 3; and at least a pair of second elastic connecting portions 5, 5 which respectively connect the second mass portion 2 to the first mass portions 1, 11 so that the second mass portion 2 can rotate with respect to the first mass portions 1, 11. Each of the first mass portions 1, 11 is driven by the application of an alternating voltage, causing the second mass portion 2 to rotate.

The invention relates to a projector (1) for projecting an image (6), comprising: a light source (2) for generating a light bundle (12); a pivotable deflection unit (3) designed for deflecting the light bundle (12) generated by the light source (2) onto a projection surface (5); and an imaging device (7, 8, 9) for imaging an aperture of the deflection unit (3) onto the projection surface (5); wherein the imaging device (7, 8, 9) comprises a mirror objective (7) having at least two mirror elements (8, 9). The invention further relates to a corresponding method.

The lack of calcium and the low absorption efficiency of calcium become global problems, and phosphoeptide is proven to be capable of effectively promoting the calcium absorption of a human body, so that looking for efficient and fast phosphoeptide enrichment methods is of great significance. Target materials are separated and purified by taking magnetic nanoparticles as adsorption carriers is a new separation and purification technology, through carrying out surface modification on magnetic nanoparticles, target materials are specifically separated and purified, and under the action of an external magnetic field, the rapid separation of the target materials from a complex system is implemented. Compared with traditional methods, a magnetic separation technology has the advantages of simple and rapid operation, efficient enrichment, high recovery rate, and the like. The invention firstly provides a preparation method of metal oxide magnetic nanoparticles. Titanium dioxide/ferroferric oxide magnetic nanoparticles prepared by using the method disclosed by the invention have superparamagnetism and good water dispersibility, and show high specificity to the adsorption of phosphoeptide. The enrichment of phosphoeptide based on the metal oxide magnetic nanoparticles is obviously superior to that in traditional methods.

In a biaxial mirror device where beams for connecting a first movable frame to a second movable frame and the second movable frame to a fixed frame pass a center of the mirror along an axis, an actuator for moving the second movable frame is composed of two first and second actuators and in a state that rotational angles of the movable frames are zero, the first actuator permits the second movable frame to start rotation and when it reaches a specific rotational angle, the second actuator permits the second movable frame to rotate, thus a large deflection angle is obtained even by the dissonance drive.

An optical position measuring arrangement for detecting the position of a first object and a second object which are movable in relation to each other in a measuring direction. The optical position measuring arrangement including a scale which is connected with the first object, the scale including an incremental graduation extending in the measuring direction and having the graduation period (TP_INC). The optical position measuring arrangement including a reference marking at a reference position, wherein the reference marking includes a structure with a graduation period (TP_REF), which changes locally, wherein the reference marking has a mean graduation period (TP_REF,m) within a range of the graduation period (TP_INC) of the incremental graduation. A scanning unit connected with the second object and including a scanning system for generating a reference signal at the reference position.

The invention discloses a compression molding die used in compression of neodymium iron boron green bodies. The compression molding die comprises non-magnetic conductive small side plates and magnetic conductive plates arranged on the cavity wall enclosed by the small side plates. By the additional arrangement of the magnetic conductive plates in the compression molding die, the situation of nonuniform magnetic fields at the positions close to the small side plates is avoided, larger magnetic declination generated from magnet particles at the positions close to the small side plates are avoided, and quality of sintered neodymium iron boron products is further improved.

A micro-mirror for deflecting an incident light is disclosed, wherein the micro-mirror comprises: a mirror section for reflecting an incident light issued from a laser diode; a hinge section including a fixed section and a movable section each having a flat surface; and a drive section having a bi-morph structure made of two or more of materials having different heat expansion coefficient for deflecting said mirror section to change relative angle to said incident light.

Calcium deficiency and low absorptivity of calcium are known as global problems, and it is confirmed that phosphorylated peptides are capable of promoting absorption of calcium by human body effectively, so that research on high-efficient and rapid enrichment method of phosphopeptides is of significant importance. Separation and purification of target substances by taking magnetic nanoparticles as adsorption carriers are emerging technologies. According to the emerging technologies, the magnetic nanoparticles are subjected to surface modification so as to realized separation and purification of the target substances, and rapid separation of the target substances from complex systems can be realized in the presence of an applied magnetic field. Compared with traditional methods, magnetic separation technology is fast, is simple in operation, and high in efficiency and recovery rate. The invention firstly provides a preparation method of metallic oxide magnetic nanoparticles, and the obtained zirconium dioxide and ferriferrous oxide magnetic nanoparticles are used for enrichment of phosphopeptides. The zirconium dioxide and ferriferrous oxide magnetic nanoparticles possess superparamagnetism and excellent water dispersibility, and show high specificity on adsorption of phosphopeptides. Enrichment effects on phosphopeptides of the method based on the metallic oxide magnetic nanoparticles are obviously better than that of the conventional methods.

An optical scanning apparatus including: a MEMS mirror that deflects an optical beam output from a light source; a drive unit that drives the MEMS mirror at a constant cycle; and a photodetector device that detects the optical beam output from the light source, a deflection state of the MEMS mirror is obtained from a relationship between a phase of a drive phase signal input to the drive unit and a phase of a detection signal of the photodetector device. For example, time T is detected between output of the drive phase signal and output of the detection signal from the photodetector device, and maximum deflection angle θ_m of the MEMS mirror is obtained by the equation θ_m=θ₀/sin(2πνT−π/2). T is time, θ₀ is an installation deflection angle of the photodetector device, and ν is a deflection frequency of the MEMS mirror.

An electro optic device includes an optical element in which a refractive index distribution, changes according to the intensity of an electric field generated therein such that an incident laser beam is scanned. First and second electrodes are provided on two opposite surfaces of the optical element. A distance between electrodes of the first and second electrodes of the optical element decreases continuously or in a stepwise manner from an emission end surface toward an incident end surface.