70results about "Mountings" patented technology

In an optical component where fixation of resin welding is performed by emitting a laser beam to screwing parts of an inner lens barrel and an outer lens barrel after focus adjustment, the laser beam is emitted to melt and cure a joint of the screwing part of the inner lens barrel and the screwing part of the outer lens barrel by 0.5 mm to 3.0 mm in a direction parallel to a direction of protrusion of the inner lens barrel relative to the outer lens barrel, so that welding and fixation are completed.

Systems and techniques for an optical scanning microscope and/or other appropriate imaging system includes components for scanning and collecting focused images of a tissue sample and/or other object disposed on a slide. The focusing system described herein provides for determining best focus for each snapshot as a snapshot is captured, which may be referred to as “on-the-fly focusing.” The devices and techniques provided herein lead to significant reductions in the time required for forming a digital image of an area in a pathology slide and provide for the creation of high quality digital images of a specimen at high throughput.

An optical sheet suitable for use in a laminate comprising at least one glazing component. The optical sheet comprises a non-metallic multi-layer optical film that has multiple optical layers, and can be, for example, a solar energy reflective film (e.g., an infrared radiation reflective film). The multiple layers are thermally and/or otherwise fused together along all, substantially all or at least a substantial portion of the peripheral edge of at least the optical film, so as to prevent or at least substantially reduce the occurrence or degree of delamination of the multiple layers along all, substantially all, or the substantial portion of the peripheral edge of the optical film. At least the optical film can be dimensioned such that, when bonded to a glazing component, all, substantially all or at least the substantial portion of the peripheral edge of at least the optical film is positionable so as to be co-extensive with or substantially co-extensive with a corresponding portion of the peripheral edge of the glazing component to which the optical sheet is to be bonded.

A catadioptric projection objective for microlithography has at least one curved mirror that is deformable and adjusting elements that can deform the deformable mirror. The adjusting elements are matched to given image errors and their correction. The invention is suitable for astigmatism, fourfold wavefront-deformations due to lens heating, compaction, and the like.

A lens member includes at least one of the annular prisms including a facet at an edge between an inner annular surface and an outer surface of the at least one of the annular prisms. The prisms with facets may be provided at a central portion of the lens member and the facets are configured to refract light toward a light-exit side of the lens member.

A method and apparatus for recalibrating a liquid lens. In one embodiment, a lens holder is provided to adjust the focal length of the lens as a function of temperature. In another embodiment, a recalibration circuit including a second lens of similar characteristics to the imaging lens is used to determine an appropriate focus. In other embodiments, an open loop calibration process is used.

An object of the present invention is to provide an outer mirror which prevents the whistle noise without the rotation of the mirror assembly being prevented. In order to achieve the above object, an outer mirror which includes a mirror base provided on a vehicle body; a shaft portion fixed to the mirror base; a mirror assembly rotatably mounted on the mirror base around the shaft portion used as a rotational axis; a windshield member to occlude a gap between the mirror base and the mirror assembly, in which the shaft portion includes a mounting seat attached to the mirror base; a shaft body provided uprightly on the mounting seat, the mirror assembly includes a housing having an opening toward the mirror base and the shaft body is inserted into the opening; and a mirror attached to the housing is provided.

A lens module includes a lens, a barrel, a holder and a driving mechanism. The barrel is configured for receiving the lens. The holder is configured for receiving the barrel therein. The driving mechanism includes a first lever and a first piezoelectric device. The first lever includes a fixed end and a moving end and a connecting portion interconnected between the fixed end and the moving end. The fixed end of the first lever is pivotedly mounted in the holder. The moving end of the first lever is configured for driving the barrel to move. The first piezoelectric device is arranged between the connecting portion and the holder. The first piezoelectric device is extendable and contractible along an optical axis of the lens so as to control movement of the barrel along the optical axis relative to the holder.

The invention provides a photographic device. In the photographic device comprising a photographic optical system component with a prism, the prism is fixed firmly so that the photographic device is not upsized. The photographic device comprises: a buffering part elastically supporting and retaining a lens frame of the photographic optical system component with the prism relative to a frame part; a prism retaining frame comprising a prism receiving chamber receiving the prism and forming a part of the lens frame; and an adhesive injection hole with one end being open at the outer surface of the lens retaining frame and the other end being open in the prism receiving chamber. The opening of the other end side of the adhesive injection hole is flat in shape and the length direction of the opening is the direction vertical to the direction where the buffering effect of the buffering part on the lens frame is weakest. The prism is fixed through adhesive injected from the adhesive injection hole.

The invention relates to a tiled grating displacement error monitoring system, which comprises a grating tiling device for mounting a tiled grating, wherein a fine adjuster platform of the grating tiling device is provided with a piezoceramics driver; two polar plates of a first digital capacitance micro-displacement sensor are oppositely arranged on positions in the horizontal direction of a coarse adjuster platform and a lower platform of the fine adjuster respectively; two polar plates of a second digital capacitance micro-displacement sensor are oppositely arranged on positions perpendicular to the lower platform and an upper platform of the fine adjuster respectively; output ends of the first and second digital capacitance micro-displacement sensors are connected with the input end of a signal sample circuit; the output end of the signal sample circuit is connected with the input end of a controller of a singlechip; the output end of the singlechip is connected with a PC through a serial port communication circuit; and the output end of the PC is connected with the control end of the piezoceramics driver through a D/A converter.

The invention relates to a lens driving device and belongs to the technical field of micro-cameras. The lens driving device comprises a first magnetic yoke ring, an insulation sheet, a first spring piece, a gasket, a lens carrier, a coil, a group of magnets and a second spring piece, wherein the outer profile of the first magnetic yoke ring is rectangular or circular, the insulation sheet is matched with a magnetic yoke ring cavity, the first spring piece and the gasket are placed in the magnetic yoke ring cavity, the lens carrier is provided with a lens placing cavity, the lens carrier and the coil are placed in the magnetic yoke ring cavity, and the second spring piece is placed in magnetic yoke ring cavity and provided with a group of third spring wires. The lens driving device has the advantages that a good even distribution effect is showed by the magnetic lines of the magnetic field generated by the magnets, an electromagnetic induction force of the coil obtained in an effective length range is enabled to be enlarged significantly, so that good driving characteristics are reflected, power driving power consumption can be reduced, assembly efficiency can be improved, the phenomenon that foreign bodies in the cavity drop on a sensor surface of a camera from lens carrier mating holes is avoided, wherein the phenomenon is caused by impact and vibration, so that image quality is ensured, harsh requirements of a lens optical axis degree can be met, and electromagnetic radiation generated by the coil can be prevented from affecting surrounding components.

There is provided an apparatus for driving a piezoelectric actuator moving a lens for auto-focus, the apparatus including: a lens position sensing unit sensing a position of the lens and generating a sensed lens position value; a lens control unit comparing the sensed lens position value with a target lens position value for auto-focus to determine a moving direction of the lens; and an actuator driving unit generating an actuator driving signal for driving the piezoelectric actuator to move the lens in the moving direction determined by the lens control unit, wherein the lens control unit temporarily stops the operation of the actuator driving unit, and receives the sensed lens position value corresponding to the lens position sensed by the lens position sensing unit and compares the sensed lens position value with the target lens position value while the operation of the actuator driving unit is temporarily stopped.

The invention relates to a modified structure for automatic rear view mirror, especially a vehicle detection and alert system with blind spot elimination function. It consists of a rear view mirror main body that contains a lens; a driving motor that is installed inside the rear view mirror main body and connects to the lens to control the lens angle; a sensor that is installed inside the rear view mirror main body to detect approaching objects; a control chip module that is installed inside the rear view mirror main body and connects with the sensor and the driving motor to receive the detection signals from the sensor and control the driving motor to obtain the optimal lens angle. Thus, the driver safety is greatly improved.

The invention discloses a high-pixel mini-typed optical automatic focusing system driven to focus by electromagnetic force, comprising a base; the technical key point of the system is that the base comprises a drawtube used for guiding; the chamber of the drawtube is internally provided with a lens seat which can move upwards and downwards along the drawtube; the lens seat is enwound by a plurality of coil turns; the drawtube is internally provided with a magnet; the lens seat is provided with a recovery spring; the seat can also comprise a bearing seat and an upper cover; the drawtube is sleeved on the bearing seat; the upper cover presses the drawtube and is subsequently connected with the bearing seat; the magnet has four magnetic blocks which are uniformly arranged at four corners of the drawtube. The invention aims at overcoming the shortages that the existing focusing system has low precision, large appearance and restricted photographing distance and providing a system which adopts the electromagnetic force driving and spring elasticity balance type to realize the automatic focusing of the high-pixel lens; the system achieves the action accuracy of the automatic focusing of the lens and the micromation of the automatic focusing system and solves the microspur photographing problem of the lens.

An image pickup apparatus that can accurately correct an error in the position of a taking lens due to a loss of synchronism of the stepping motor during opening and closing of the lens barrier. The position of a taking lens retractable into the body of the image pickup apparatus is detected. A reference position is provided on one of both sides of a section in which the lens barrier is driven to open and close, the one side being a side on which the lens barrier is not driven to open and close.

The invention belongs to a truss support structure in the technical field of remote space sensing and aims to solve the technical problem of providing the ring-shaped carbon fiber truss support structure of the coaxial three-reflector spatial optical system. In the technical scheme, the ring-shaped carbon fiber truss support structure comprises an upper carbon fiber support ring, a lower carbon fiber support ring, a first carbon fiber support rod, a second carbon fiber support rod, a third carbon fiber support rod, a fourth carbon fiber support rod, a fifth carbon fiber support rod, a sixth carbon fiber support rod, a first carbon fiber support rod coupling component, a second carbon fiber support rod coupling component, a third carbon fiber support rod coupling component, a fourth carbonfiber support rod coupling component, a fifth carbon fiber support rod coupling component, a sixth carbon fiber support rod coupling component, a first embedded component, a second embedded component, a third embedded component, a fourth embedded component, a fifth embedded component and a sixth embedded component. The upper end and the lower end of the structure are respectively provided with the upper carbon fiber support ring and the lower carbon fiber support ring which adopt the same specifications and are embedded coaxially in a 120-degree angle; the carbon fiber support rods adopt a hollow cylindrical rod structure, and the carbon fiber support rod coupling components are provided with double flange interface structures arranged in a 60-degree angle; and the hollow cylindrical inner holes of two carbon fiber support rods are respectively sleeved on two flange interfaces of the carbon fiber support rod coupling components and are fixedly glued to form the closed ring-shaped carbon fiber truss support structure. The structure has a light weight, high stiffness, high strength and high positioning accuracy.

Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measured temperature of the liquid lens and a predetermined control temperature to maintain the temperature value within a predetermined control temperature range to reduce the effects of drift. A processor can also control a bias signal applied to the lens or a lens actuator to control temperature variations and the associated induced drift effects. An image sharpness can also be determined over a series of images, alone or in combination with controlling the temperature of the liquid lens, to adjust a focal distance of the lens.

An image capturing apparatus comprises an optical system, an image sensor having pixels each including a plurality of photoelectric converters capable of outputting image signals independently, a driving unit which controls driving of the image sensor, a focus detection unit, and an addition unit which adds the output image signals on a per-pixel basis. In each pixel, the photoelectric converters are divided into groups each including at least two photoelectric converters and a charge accumulation period for one group is delayed from and partially overlaps a charge accumulation period for another. The driving unit drives the image sensor so that image signals are read from the groups in turn, and the focus detection unit detects a focus state using a phase difference method based on the read image signals independently output from the photoelectric converters.

The alicyclic compound of the present invention has a five- or more membered ring structure having an epithioethylene linkage and/or an epidithioethylene linkage, and has tow or more sulfur atoms in its molecule. Optical materials produced by curing the alicyclic compound or a composition containing the alicyclic compound by polymerization show high refractive index.

An imaging apparatus includes: a zoom lens system including a plurality of groups and performing variable magnification by changing intervals of the lens groups; a color-separation optical system configured to carry out color separation of a light flux from the zoom lens system; and a plurality of imaging devices configured to convert optical images separated by colors by the color-separation optical system into electric signals. The zoom lens system includes at least one reflection member configured to bend an optical axis by 90 degrees or approximately 90 degrees. The color-separation optical system is arranged such that color-separation is performed in a direction within a plane perpendicular to another plane formed by an optical axis for light incident to the zoom lens system and an optical axis for light reflected by the reflection member.

A lens barrel includes: a variable focal length lens system including at least three movable lens groups; and guiding means for moving the variable focal length lens system forward and backward in an optical axis direction. The variable focal length lens system includes at least first, second and third lens groups having positive, negative and positive refracting power, respectively, arranged in this order from an object side. When a lens position setting is changed from a wide angle end state to a telescopic end state, at least the first and third lens groups are moved toward the object side such that air separation between the first and second lens groups monotonously increases and air separation between the second and third lens groups monotonously decreases. The guiding means includes a fixed frame, a rotating frame, a rectilinear guiding frame, a first guide frame, and a second guide frame.

One aspect of the present invention relates to a driver of a vibrator including: a control section; and an alternating current signal generation section configured to generate an alternating current signal based on an output from the control section, and to apply the alternating current signal to the vibrator, wherein the control section is configured to lower a frequency of the alternating current signal, and to change, after the frequency change, at least one of a voltage ratio and a phase difference of the alternating current signal such that the ellipse ratio of the elliptical motion changes from a first ellipse ratio to a second ellipse ratio, the second ellipse ratio has a larger ratio of a component in a moving direction in the elliptical motion to a component in a direction perpendicular to the moving direction in the elliptical motion than the first ellipse ratio.