5 results about "Wedge prism" patented technology

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.

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.

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.

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.