15 results about "Wedge prism" patented technology

The present application relates to a light spot analysis system, which comprises a shell and an analysis assembly, the shell is provided with an opening, and the analysis assembly is arranged in the shell and used for light spot analysis, the analysis assembly comprises a collimating lens, a wedge prism used for decomposing laser into a reflected light beam and a transmitted light beam, a measuring camera used for measuring the reflected light beam, and a tail light absorber used for absorbing the transmitted light beam, the collimating lens is arranged at the opening, and the wedge prism is arranged between the collimating lens and the measuring camera, wherein one analysis assembly is provided with a focusing lens, and the focusing lens is arranged between the wedge prism and the measuring camera. The present application can be applied to high-power laser measurement analysis of different wavelengths, and cost reduction is realized at the same time.

An optical axis adjusting device and an actuator therefor are provided that can suppress fluttering of the optical axis of an anisotropic optical element even during high-speed rotation. [Solution] In an optical axis adjustment actuator (10) that can be fitted with a wedge prism and is rotationally driven by a voice coil motor, a bearing structure is constructed by sandwiching a rolling element (4) between a groove (212) on the movable part (2) side and a groove (312) on the fixed part (3) side that are radially opposed to each other.

An actuator for optical axis adjustment, which allows a wedge prism to be mounted thereon and is rotationally driven by a voice coil motor, has a bearing structure in which rolling members are sandwiched between a groove on a movable unit and a groove on a fixed unit that face mutually radially.

An optical device and a method of extending a field of view of an optical device comprising a 5 fisheye lens configured to provide a substantially 360° azimuthal angle view with a forward direction at 0° radial angle and with a maximum radial angle θm, and a sensor configured to record an image through the fisheye lens. The method comprises the step of disposing one or more wedge prisms adjacent the fisheye lens, wherein each of the one or more prisms is configured such that a ray incident at more than θm radial angle is deflected to be captured 10 through the fisheye lens onto the sensor.

The invention relates to a laser beam coupling device and method, relates to the technical field of laser coupling, and aims to solve the problems that an existing disc laser needs a position sensor to sense the rotation angle in real time, the rotation angle and the laser splitting distribution proportion need complex experiment debugging, and the use and production cost is greatly improved. The invention provides a laser beam coupling device which comprises an optical fiber coupler, a diaphragm and a beam splitting module, the optical fiber coupler and the diaphragm are connected with each other, the beam splitting module is connected to the end of the diaphragm and used for splitting laser entering the beam splitting module and coupling the laser into an optical fiber through the diaphragm and the optical fiber coupler, and the beam splitting module comprises a wedge prism and a deflection device. The wedge-shaped prism is driven by the deflection device to perform angle deflection, so that the laser entering the light splitting module is divided into two laser beams according to a required proportion, and the output power proportion of the optical fiber coupler to the inner core and the outer core of the cladding optical fiber is simply adjusted at low cost.

The application belongs to the technical field of laser radar scanning, and is based on a laser scanning system of a metasurface.The system comprises a laser, a front metasurface wedge-shaped prism and a rear metasurface wedge-shaped prism.The front metasurface wedge-shaped prism and the rear metasurface wedge-shaped prism are arranged in sequence along the laser light emission direction of the laser, and jointly form a prism group.The front metasurface wedge-shaped prism and the rear metasurface wedge-shaped prism can deflect incident light, and are coaxially rotatable under the action of an external mechanical device, so as to achieve a scanning range of 360° in the X-Y plane and ±40° around the Z axis.The application uses a metasurface device to replace a traditional prism, and has simple design and compact structure, which is conducive to the miniaturization and light weight of the laser radar.The application solves the problem of centroid offset of the traditional prism.Through selection of different metasurface unit structures and parameters, not only can the polarization sensitivity of the metasurface wedge-shaped prism be controlled, but also the control of different working wavelengths can be realized.

The invention discloses a calibration device and method for a blade tip timing system, and relates to the technical field of precise photoelectric measurement, the calibration device comprises a laser vibration meter and a wedge-shaped prism lens cone, the wedge-shaped prism lens cone is connected to the top end of a rotating shaft of an impeller to be measured, the wedge-shaped prism lens cone and the rotating shaft coaxially and synchronously rotate, and the laser vibration meter is connected with the wedge-shaped prism lens cone. The laser vibration meter is placed outside the experiment table, and measurement laser emitted by the laser vibration meter points to the top end of the rotating shaft. The invention provides a device and a method for calibrating a blade tip timing sensor through a laser vibration meter, and solves three main problems of fixed measuring points, unreliable reference data and incapability of calibration in a working state in the existing calibration technology. The measurement technology is non-contact measurement, and has wide application prospects in health monitoring and safety maintenance of high-end rotating machines such as aero-engines and gas turbines.

An optical communication device includes an adjustment device and a light receiving unit. The adjustment device includes a wedge prism, an actuator, a detection unit, and a control unit, and the control unit controls the actuator to reduce a difference between a result of detection by the detection unit and a reference.

Additive manufacturing systems and related methods are disclosed. In some embodiments, an additive manufacturing system includes a build surface, one or more laser energy sources configured to emit laser energy, an optical phased array operatively coupled to the one or more laser energy sources, and a Risley prism assembly comprising a plurality of wedge prisms. The optical phased array includes one or more phase shifters operatively coupled to the one or more laser energy sources and configured to control a phase of the laser energy. The optical phased array is configured to direct the laser energy towards the Risley prism assembly, and the Risley prism assembly is configured to direct the laser energy towards the build surface.

The utility model discloses a prism formula laser scanner, including laser light source and light receiver, its characterized in that, laser light source and light receiver between along optical path are sequentially arranged collimating lens, laser deflection device, half -and -half lens and camera lens group, laser deflection device includes oppositely arranged wedge prism I and wedge prism II, wedge prism I and wedge prism II are adjusted distance through linear moving assembly, and all be provided on rotating unit of wedge prism I and wedge prism II to adjust the angle of wedge prism I and wedge prism II. The utility model discloses through linear moving assembly adjustment the interval between wedge prism I and wedge prism II, to realize the scanning range of prism formula laser scanner to expand and reduce the size of the dark area in the middle, through rotating unit realizes the full coverage of scanning angle.

A LIDAR system includes a static monolithic LIDAR transceiver, a collimating optic, and a first rotatable wedge prism. The static monolithic LIDAR transceiver is configured to transmit a laser beam and receive reflected laser light from a first target object. The collimating optic is configured to narrow the transmitted laser beam to produce a collimated laser beam. The first rotatable wedge prism is configured to steer the collimated laser beam in a direction of the first target object based on the first rotatable wedge prism being in a first position.

[Task] To realize a device for adjusting the optical axis and an actuator for it, which suppresses the flutter of the optical axis of an anisotropic optical element even at high-speed rotation. [Means to solve] In an actuator (10) for adjusting the optical axis, which may be equipped with a wedge prism and is driven to rotate by a voice coil motor, a rolling element (4) is clamped between a groove (212) on the side of a moving part (2) and a groove (312) on the side of a fixed part (3), which are opposite each other in a radial direction.

The present application relates to a laser focusing spot measuring system based on different wavelengths, which comprises a shell and an analysis assembly, the shell is provided with an opening, and the analysis assembly is arranged in the shell and used for spot analysis, the analysis assembly comprises a collimating lens and a wedge prism used for decomposing laser into reflected beams and transmitted beams, a measuring camera used for measuring the reflected beams and a tail light absorber used for absorbing the transmitted beams, the collimating lens is arranged at the opening, and the wedge prism is arranged between the collimating lens and the measuring camera, wherein one of the analysis assemblies is provided with a focusing lens, and the focusing lens is arranged between the wedge prism and the measuring camera. The present application can be applied to high-power laser measuring analysis of different wavelengths, and cost reduction is realized.

The invention provides a laser three-dimensional engraving machine suitable for superhard material processing. The laser three-dimensional engraving machine comprises a laser head, a focusing lens group, an acousto-optic deflection device, a polyhedral wedge prism group, a galvanometer, a galvanometer deflection motor and a focusing lens, the laser head generates pulse laser; the focusing lens group is used for adjusting a focal plane where a focal point is located after the laser passes through a focusing lens, and etching different height layers of the material; the acousto-optic deflection device linearly deflects the laser and controls the laser to be emitted to different side reflecting surfaces of the wedge-shaped prism at different moments; the polyhedral wedge-shaped prism group is formed by sequentially arranging a plurality of wedge-shaped prisms according to spatial positions, and laser is reflected by the side surfaces of the wedge-shaped prisms to form line scanning; the galvanometer deflection motor drives the galvanometer to deflect the line laser formed after passing through the wedge-shaped prism group, and line scanning line feed is implemented; and the focusing lens focuses the laser deflected by the galvanometer into a focal plane. High-speed ablation of laser on the surface of the hard and brittle material is achieved, heat accumulation is reduced, and the machining precision and efficiency are improved.

This invention discloses a waveguide HUD angle adjustment system with dispersion compensation, relating to the field of automotive head-up display technology. It includes an image generation unit, a wedge prism, a deflection prism, an arrayed waveguide, a compensation mirror, and a windshield. The image generation unit outputs an image beam carrying image information. The arrayed waveguide includes a waveguide substrate, an input reflection slope disposed within the waveguide substrate, and multiple output reflection slopes spaced apart along the light propagation direction. This invention fixes the exit angle adjustment function on the non-parallel input and output reflection slopes, and fixes the dispersion compensation function on a single wedge prism located in the front-stage optical path. This achieves a coordinated structure of front-stage dispersion compensation, waveguide-based exit angle adjustment, output pupil expansion protection, and rear-stage aberration compensation, realizing optical path regularization and low dispersion display without increasing the overall installation tilt angle.