6 results about "Dove prism" patented technology

This invention relates to a coaxial adjustment device and method for a Dowell prism, comprising a prism mounting frame, an adjustment panel, a fixed mounting plate, and a rotary motor. The prism mounting frame has a locking cavity for engaging the Dowell prism. The adjustment panel is connected to the upper end of the prism mounting frame, and the adjustment panel has a light-emitting hole facing the locking cavity for light emission. The adjustment panel has multiple evenly distributed first through holes and first adjustment holes. A first connecting member passes through the first through hole and connects to the inner ring of the rotary motor. A first adjustment member passes through the first adjustment hole and abuts against the upper end of the prism mounting frame. The fixed mounting plate is connected to the outer ring of the rotary motor, and the fixed mounting plate also has a second adjustment hole. A second adjustment member passes through the second adjustment hole and abuts against the rotary motor. This invention not only facilitates the adjustment of the Dowell prism to the set requirements but also provides a simple and quick adjustment process.

The application belongs to the technical field of optical fiber rotary connectors, and discloses a super-multi-path optical fiber rotary connector, wherein optical fiber collimators are arranged on input end fixed end covers and output end fixed end covers in a same layer interval type concave-convex staggered form and / or an inner-outer layered form, on the basis of not changing a light aperture d of a dove prism, a fiber collimator adjusting hole d1 and a fiber collimator mounting hole d2, as many paths as possible are increased, the fiber collimator adjusting hole has no intersection, and interference can be avoided, the number of paths is increased through different fixed end cover designs, different arrangements correspond to different adjusting sequences, super-multi-path optical fiber rotary connector design is realized, and the problem of large data transmission in an optical fiber communication system is solved.

The present application relates to a kind of dual-optical arm dynamic single-pixel imaging system and method based on Radon spectrum, the imaging system includes beam splitter, dove prism, plano-convex cylindrical lens, spatial light modulator, single-pixel detector and imaging lens.One optical path in dual-optical arm single-pixel imaging system is used for positioning, and the other optical path is used for single-pixel imaging.Positioning light path is completed by optical element dove prism, plano-convex cylindrical lens and linear array detector for fast positioning, and imaging light path is compensated according to the positioning result to complete the reconstruction of moving target for modulated speckle of light field.Adopting the imaging system and method can avoid the problem of increasing sampling rate caused by traditional positioning method, and also can avoid the problem that positioning speckle is vulnerable to noise, provides an effective way for moving single-pixel imaging.

The application discloses a kind of three-dimensional optical waveguide laser direct writing system and method, the system includes laser, beam expander, rotating motor, slit, focusing lens, motion platform and control system successively arranged along optical path;The light beam incident end of slit is installed with dove prism, rotating motor drives dove prism and slit without relative motion Synchronous rotation;Laser beam is refracted after dove prism with 2ω angular velocity rotation, then penetrates the slit of synchronous rotation and forms high-speed rotating elliptical light spot, forms time average, space isotropic equivalent spherical focus in sample after focusing lens focusing.This application converts dynamic elliptical light spot into equivalent spherical focus by the synchronous linkage of dove prism and rotating slit, eliminates the dependence of traditional direct writing technology on scanning direction, realizes the direct writing processing of high roundness three-dimensional optical waveguide in any scanning direction, and can further improve light field quality and processing precision by adding 4f imaging system.

The application discloses a kind of multi-beam parallel processing system and processing method, the application is accurately controlled focal point z direction distribution by controlling the inclination of lens one and optical axis vertical surface, realize focal point array and spherical surface, free curve trajectory normal fitting, processing surface smooth no step, focal point array rotates in real time along with trajectory normal, projection spacing is consistent, energy density is stable, curve edge quality is greatly improved;Compared with the prior art, only by rotating multi-beam generator and lens one and the angle adjustment of lens one realizes focal point array regulation and control, saves whole machine rotation, complex structure such as dove prism, K-mirror, easy to operate and lower cost.