49 results about "Optical axis" patented technology

The invention relates to a camera module package including a lens barrel having at least one lens therein and an IR filter installed at a lower end thereof. The package also includes a housing having the lens barrel disposed movable in an optical axis direction in an inner hole thereof. The package additionally includes a ceramic substrate attached to a lower end of the housing, the ceramic substrate having an opening formed on an upper surface thereof corresponding to the position of the lens. The package further includes an image sensor electrically connected to a lower part of the ceramic substrate, the image sensor having an image sensing region thereof exposed through the opening of the ceramic substrate. This prevents damaging the components by the adhesive leaking during the assembly, defective products due to infiltration of extraneous material, improves product reliability and reduces manufacturing costs.

The present invention is an image display device in which a two-dimensional image displayed on an image display element is observed by an observer as a magnified virtual image through a virtual image optical system. The second optical plane (15c) on the side of the optical pupil (19) and the reflection and transmission of the optical axis having an angle greater than or equal to 30 degrees and less than 90 degrees with the normal line of the first optical plane or the second optical plane surface (16), which reflects or transmits the image light incident from the incident optical surface (15a), and the incident optical surface makes the relay optical system (12) shown in the image display element (11) ) transited image light incident; reflective optical element (18), reflecting so that the image light reflected on the reflective transmission surface and emitted from the first optical plane is directed to the reflective transmission surface and becomes parallel light; and the phase difference optical element (17), arranged in the optical path between the first optical plane and the reflective optical element, to convert the polarization state of the image light.

An RF-excited waveguide laser module comprises a first electrode having a first elongate surface defining in part a waveguide laser channel extending along an optical axis, the first elongate surface having a substantially linear cross-section normal to the optical axis. A second electrode has a second elongate surface defining in part the waveguide laser channel extending along the optical axis. The second elongate surface has a non-linear cross-section normal to the optical axis. A dielectric insert may be provided between the electrodes defining in part the waveguide laser channel. A lengthwise gap may extend essentially an entire length of the waveguide laser channel between one of the first and second electrodes and the dielectric insert. The gap provides fluid communication between the waveguide laser channel and a volume outside the waveguide laser channel.

The invention discloses a full-light information collection system. Specifically, the system is characterized in that a spectrum image of sparse sampling is obtained by a sparse sample imaging array, a light splitting device, a gray scale imaging device and a spectrum light path collection device; a color image with high resolution is obtained by a color imaging device and a color light path collection device; light axes of the spectrum light path collection device and the color imaging device are parallel, the obtained two images respectively includes spectrum information of the sparse sampling and color information of the high resolution, and the obtained two images includes parallax information; finally, the two paths of information are processed by an information combined processing device, full-light information including a spectrum and a depth is reestablished according to the sparse spectrum information, the color information and the parallax information due to different poses of two cameras. According to the invention, the combined obtaining of the full light information is realized, and the higher spectrum resolution and the more precise depth information can be obtained by adopting the imaging device higher in precision.

A calibration and rectification method includes arranging a monitor vertically relative to the optical axis of the stereo camera; displaying 3D patterns, similar to patterns obtained by projecting pattern images of various postures produced by a panel virtually located in front of the stereo camera, onto the monitor through a 3D graphical technique; and the stereo camera acquiring the 3D patterns displayed on the monitor to perform calibration and rectification, thereby correcting images of the stereo camera.

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.

The invention discloses an optical imaging lens. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lensfrom an object side to an image side along the optical axis, wherein the first lens and the second lens respectively have positive focal power; the third lens, the fourth lens, the sixth lens and theseventh lens respectively have positive focal power or negative focal power; the fifth lens has negative focal power, and the surface of the fifth lens at the image side is a concave surface; the surface of the sixth lens at the object side is a convex surface; the adjacent lenses are spaced by air; the maximum angle of HFOV (half field of vision) of the optical imaging lens is smaller than 30 degrees.

The invention relates to a one-by-one feeding device for small pipes. The one-by-one feeding device comprises a hopper with the bottom face provided with an inclined oblique plate, two fixing plates located on the two sides of the hopper correspondingly, polished shafts fixedly connected to the two fixing plates, and jacking rods located at the low end of the oblique plate located in the hopper. The low end of the oblique plate of the hopper is opened, and a front baffle is used for stopping the pipes in the hopper. For the pipes different in length, a movable plate slides along the polished shafts, rapid adjustment can be conducted so that the one-by-one feeding device can adapt to the pipelines different in length, the corresponding jacking rods are transversely driven by a drive device,the positions are changed, and feeding of the pipes different in pipe length is matched. For the pipes different in diameter, the one-by-one feeding device can adapt to feeding of the pipes differentin pipe diameter through adjustment on the distance between the front baffle and the hopper, the matching relation of pin holes in the front baffle and positioning holes in the movable plate is adjusted, pins are used for fixing, then the distance between the front baffle and the hopper can be adjusted, accordingly, the one-by-one feeding device can adapt to feeding of the pipes different in pipediameter, and component replacement is not needed.

A projecting zoom lens includes in order from a magnification side, a first negative group, second, third and fourth positive groups, a fifth negative group and a sixth positive group. The third group, the fourth group and the fifth group are moved along the optical axis to the magnification side during zooming from the wide-angle end to the telephoto end, and such that the projecting zoom lens satisfies given following conditional expressions.

0.9<|f1|/fw<1.7  (1)

55<νd4  (2)

The invention discloses a pump-probe method based on Z-scan. A laser beam is divided into two beams; pumping light is focused on samples to be measured through time delay, so that a non-linear sample generates nonlinear absorption and nonlinear refraction; emergent probe light is divided into two beams through a spectroscope, wherein one beam directly enters a first probe, and the other beam enters a second probe after passing through a diaphragm of small pore diameter with a center coinciding with an optic axis. The pump-probe method is characterized in that phase objects are arranged in the front of a convex lens in a probe light path; the method for measuring the light comprises the following steps: (1) the samples to be measured are put in place, and the energy of the probe light at different times is collected by two probes respectively; (2) a energy curve of the probe light at different delay times is processed, so as to obtain optical nonlinear parameters. A measuring system working according to the method has the advantages that the light path is simple; the data treatment is simple; nonlinear absorption and refraction can be measured simultaneously without the need of separate measurement, and the size and the symbol of the nonlinear refraction can be measured simultaneously; the measuring results are accurate, etc.

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.

An apparatus adapted for confocal imaging of a non-flat specimen comprising a coherent light source for producing a light beam, imaging optics adapted to focus the light beam into at least one spot on a surface of a specimen, and a detector adapted to receive and detect light reflected from the specimen surface. The imaging optics comprise at least one optical component located so that the light reflected from the specimen surface passes therethrough on its way to the detector. The optical component is movable so as to move the at least one spot, within a range of movement, to a number of distinct locations in a plane perpendicular to the apparatus' optical axis, within the detector's integration time.

A lens barrel includes an optical system including a short focal length for a wide angle of view; and an ND filter in the shape of a disc which is provided on an optical axis of the optical system. An optical density of the ND filter decreases in a direction radially outwards from a center of the ND filter.

The invention discloses an infant growth obstacle intelligent evaluation method based on a three-dimensional eye movement characteristic. The method mainly comprises the three steps of establishing adouble-sphere model of an eyeball optical axis, a binocular vision axis and a head-eye relative space relation, extracting the three-dimensional eye movement characteristic, and performing intelligentidentification of the infant growth obstacle. The double-sphere model estimates the optical axis according to the three-dimensional eyeball data, and obtains the relative relation between the binocular vision axis and eyes on the head. In three-dimensional eye movement characteristic extraction, a new eye movement parameter is obtained after three-dimensional modeling. In intelligent identification of the infant growth obstacle, an algorithm is applied for performing intelligent cleaning, storage, analysis, mining and displaying on mass eye movement data, and an association between a typicalparameter and a specific growth function obstacle is obtained, thereby determining the type of the obstacle. The method overcomes restriction in obtaining the eye movement characteristic; data miningtechnology and artificial intelligence technology are applied, thereby supplying a new technical tool for more objectively and comprehensively evaluating development of the infant cognition capability.

The invention provides an angular displacement laser interferometer calibration method and an angular displacement laser interferometer calibration device based on four standard optical axes, and belongs to the technical field of laser measurement. Four measuring light beams of a laser interferometer to be calibrated pass through a middle through hole of a four-axis hollow laser interference mirror group, and are parallelly arranged in the center position of four parallel standard measuring light beams; in a quadrilateral region formed by projection points of the four standard measuring light beams at the plane, the differences of environment interference degrees of the four standard measuring light beams and the four measuring light beams of the laser interferometer to be calibrated are very small, and the air refractive index average value of the standard measuring light beams is approximate to the air refractive index value of the measuring light beams of the laser interferometer to be calibrated.

The invention discloses a helicopter optical atmospheric data system, and aims to provide an atmospheric data system which is strong in anti-interference performance, high in precision and reliabilityand high in comprehensive detection resolving capability. The method is realized through the following technical scheme: based on a laser Doppler wind-finding radar detection principle, a sensor assembly emits laser to a sensed assembly. The sensor assembly emits laser to the atmosphere through multiple lenses. A scattering laser signal carrying optical axis airspeed information after interactionwith the atmosphere is received at the same time, the scattering laser signal is sent back to the sensor assembly to be processed, the sensor assembly calculates the optical axis airspeed and furtherobtains airspeed information of the helicopter, and the airspeed information comprises three-dimensional airspeed, an attack angle and a sideslip angle; meanwhile, the static pressure sensor measuresto obtain an atmospheric static pressure signal, and the static temperature sensor measures to obtain an atmospheric static temperature signal; and the sensor assembly performs data fusion on the obtained airspeed information, atmospheric static pressure information and atmospheric static temperature information, and directly calculates and outputs a complete helicopter three-axis atmospheric data signal.

The invention provides an optical imaging lens. The optical imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, afourth lens, a fifth lens, a sixth lens and a seventh lens, concave and convex curved surface arrangement of the surfaces of the lenses is controlled, the restriction is met that a distance (D11t61)on the optical axis from the object side surface of the first lens to the object side surface of the sixth lens, the aperture value (Fno) of the optical imaging lens, the image height (ImgH) of the optical imaging lens and the Abbe numbers (V2, V3, V4, V5) of the second lens, the third lens, the fourth lens and the fifth lens meet the relation: D11t61*Fno/ImgH<=1.200 and 110<=V2+V3+V4+V5<=145, andtherefore, the length of the optical imaging lens system is shortened, the aperture is increased and good imaging quality is maintained.

The invention discloses a novel linear guide rail which comprises a guide rail body and a sliding block matched with the guide rail body. The guide rail is in an H shape, a plurality of polished shaft mounting grooves are formed in the top of the guide rail body in the sliding direction, and cylindrical polished shafts are mounted in the polished shaft mounting grooves. A plurality of sliding way mounting grooves are formed in the face, in contact with the polished shafts, of the sliding block, and arc-shaped sliding ways matched with the polished shafts are mounted in the sliding way mounting grooves. The sliding ways are fixed in the sliding way mounting grooves through bolts. In the work process, the polished shafts are in direct contact with the arc-shaped sliding ways, sliding friction occurs, and when the polished shafts or the sliding ways are abraded, the corresponding components can be replaced. The guide rail body is in hollow design, reinforcing ribs are arranged in the guide rail body, and under the condition of not influencing use, materials are saved, and cost is reduced. The novel linear guide rail is simple in structure and low in manufacturing difficulty and has good application prospects.

The present invention relates to laser technology and nonlinear optical field, and provides an all-fiber femtosecond laser aiming at the shortcomings of existing lasers such as average output power, low peak power, high mode-locking threshold, wide pulse or complex structure. The laser includes pump light source, wavelength division multiplexer, gain fiber, low dispersion small mode field nonlinear fiber, polarization beam splitter, band pass filter and polarization controller. The mode field diameter of low dispersion small mode field nonlinear optical fiber is <= 4. 2 [mu]m; The bandpass filter comprises a polarization dependent isolator, a polarization maintaining fiber and a polarizer. Polarization-dependent isolator fused to the polarized optical axis of the polarization-maintaining optical fiber at an angle of 45 DEG; A wavelength division multiplexer, a gain optical fiber, a low dispersion small mode field nonlinear optical fiber, a polarization beam splitter, a polarization dependent isolator, a polarization maintaining optical fiber and a polarizer are sequentially connected to form an all optical fiber ring cavity; A polarization controller is located between the polarization beam splitter and the polarization dependent isolator and/or between the polarizer and the wavelength division multiplexer.

Disclosed herein is an electronic apparatus. The electronic apparatus includes a main body, an image capturing module, a detection unit, a controller, and an output unit. The image capturing module is mounted on the main body and acquires an image of an object. The detection unit is mounted on the main body and detects an angle of the main body with respect to a horizontal line, where the horizontal line is perpendicular to an optical axis of a lens of the image capturing module and is parallel to the horizon. The controller determines a photographing angle of the object based on the detected angle of the main body. The output unit outputs information regarding the photographing angle to an external device.

The directions of optical axes of headlights of a vehicle are adjusted based on a steering angle by switching filters of different response speed characteristics. The filters are provided with hystereses along boundaries neighboring to each other. The filters are switched depending upon the steering angle and a steering angular velocity to vary the response of swivel control. Therefore, the start of swiveling is not quickened, the filter is not frequently switched, quick motion is suppressed and, hence, smooth motion is realized making it possible to execute a swivel control without causing discomfort.

The invention provides a gesture sensing module and method as well as an electronic apparatus. The gesture sensing module is arranged on a substrate and comprises at least one luminous unit, at least one light sensor and a control circuit. The luminous unit is used for providing a light beam to irradiate a sensing region, wherein a central optical axis of the light beam and a normal vector of the substrate form an included angle, and the included angle is not equal to zero. The light sensor is used for sensing reflected light of a reflected light beam of a target object in the sensing region and generating a sensing signal according to the reflected light. The control circuit is coupled to the light sensor and the luminous unit, and judges a proceeding direction of the target object according to the sensing signal.

The invention belongs to the field of image observation equipment and provides a micro-distance and wide-angle observation shooting device. The device comprises a parallel light source module, a wide-angle and micro-distance observation device, a pressing plate, a glass plate and a polarizer. An observed object is arranged between the pressing plate and the glass plate. The wide-angle and micro-distance observation device is arranged on the inner side of the glass plate. The view-field angle of the wide-angle and micro-distance observation device is larger than or equal to two times the Brewster angle. The parallel light emitted from the parallel light source module passes through the glass plate and then is reflected to produce the reflected light. The polarizer is used for eliminating the reflected light which is incident to the wide-angle and micro-distance observation device. The included angle between the optical axis of the parallel light emitted from the parallel light source module and the optical axis of the lens of the wide-angle and micro-distance observation device is the Brewster angle. The parallel light source module includes a plurality of parallel light source units. According to the technical scheme of the invention, the parallel light source units and the parallel light source module are applied to the wide-angle and micro-distance observation. Therefore, the problems that the glass plate reflects the light so as to cause the limited condition of both the lighting and the observation can be solved.

The invention is applicable to the field of lighting, and provides a circular lighting lamp comprising a lamp shell and a heat insulating board which divides the lamp shell into an electrical chamber and a light source cavity; a light source is arranged in the light source cavity, the top of the light source is provided with a reflector, the middle part of the reflector is provided with a throughhole for the light source to pass through, and the axis of the reflector coincides with the optical axis of the light source; a circular part which is connected with the inner surface of the reflector is arranged on the circumference of the through hole, the circular part is provided with a plurality of fixing holes, a plurality of support columns pass through the fixing holes and are screwed into the heat insulating board so as to position the reflector onto the top of the light source. The embodiment of the invention arranges the reflector in the circular lighting lamp, the reflector reflects part of the upward light of the light source so that the light is emitted downwards so as to eliminate the dark spot areas below the lamp, not affect lateral illumination, meet the requirements of light distribution of circular lighting, and simultaneously reduce the cost.

The invention discloses an optical lens and imaging equipment. The optical lens sequentially comprises, from an object side to an imaging surface along an optical axis, a first lens element with negative focal power, the object side surface of which is a convex surface and the image side surface of which is a concave surface; a second lens element with negative focal power, the object side surface of which is a convex surface and the image side surface of which is a concave surface; a third lens element with positive focal power, the object side surface of which is a convex surface and the image side surface of which is a concave surface; a diaphragm; a fourth lens element with positive focal power, the object side surface of which is a convex surface and the image side surface of which is a convex surface; a fifth lens element with negative focal power, the object side surface of which is a concave surface and the image side surface of which is a concave surface; and a sixth lens element with positive focal power, the object side surface of which is a convex surface near the optical axis and the image side surface of which is a convex surface. The optical lens satisfies the following conditional expressions: TTL/f is more than 7.2 and less than 7.8, wherein f represents the effective focal length of the optical lens, and TTL represents the total optical length of the optical lens. The optical lens has the advantages of large wide angle, high pixel, day and night confocal property and small size.

The invention discloses a display panel, and a display method and a display device thereof. According to the display panel, a second polarizer is set as a plurality of first sub polarizers and a plurality of second sub polarizers, which are arranged at intervals, wherein each first sub polarizer has the same function as a normal polarizer, an optical axis direction of each first sub polarizer is vertical to a first polarizer; a two-dimensional plane where the optical axis of each second sub polarizer is located forms a preset included angle with the two-dimensional plane where the optical axis of the first polarizer is located, and thus the contrast of light penetrating through the second sub polarizers will be reduced under a large visual angle. Therefore, during normal display of the display panel, all pixel electrodes are started to meet the display of the large visual angle; and when the display panel performs anti-peeping display, only the pixel electrodes corresponding to the second sub polarizers are started, thereof the contrast of the light penetrating through the pixel electrodes is reduced under the large visual angle, the visual angle of a viewer is limited, and thus an anti-peeping display effect is realized. Compared with the prior art, the display panel disclosed by the invention has the advantages that the switch between normal display and anti-peeping display can be realized without using an additional switching device.

A lens assembly includes sequentially from an object side to an image side along an optical axis a first lens, a second lens, a third lens, a fourth lens, a stop, a fifth lens, a sixth lens, a seventh lens and an eighth lens. The first lens is a meniscus lens with refractive power. The second lens is a meniscus lens with refractive power. The third lens is a biconcave lens with negative refractive power. The fourth lens is a biconvex lens with positive refractive power. The fifth lens is a biconvex lens with positive refractive power. The sixth lens is with positive refractive power. The seventh lens is with negative refractive power. The eighth lens is with positive refractive power. The sixth lens and the seventh lens are cemented together.