3 results about "Guiding characteristics" patented technology

Provided are an optical waveguide and an optical waveguide sight, relating to optics technical field. In the optical waveguide sight, a light source and a collimating element are sequentially arranged along an in-coupling channel of a non-pupil-expansion optical waveguide. The collimating element is configured to collimate light beam emitted from light source, forming first parallel light beam, which is transmitted to the in-coupling region. The non-pupil-expansion optical waveguide is configured to redirect and transmit the first parallel light beam to an out-coupling region thereof to form second parallel light beam that is emitted to human eyes. The non-pupil-expansion optical waveguide enables efficient transmission and expansion of optical path with compact structure, broadening effective observation field of view while maintaining small footprint. Moreover, precise light-guiding characteristics of the optical waveguide prevents refraction deviations of light when it propagates at edges, reducing chromatic aberration and aiming errors, thereby enhancing display effect.

This invention relates to a low-loss hollow-core optical fiber with nested anti-resonant tubes of varying wall thicknesses and its applications. The fiber comprises an outer cladding and an inner cladding. The inner cladding is composed of anti-resonant structural units arranged circumferentially along and connected to the inner wall of the outer cladding. The central cavity enclosed by the inner cladding forms the fiber core. The key feature is that each anti-resonant structural unit comprises at least two layers of anti-resonant tubes with different radii and thicknesses, the thickness of which increases progressively from the outside to the inside. By establishing a gradually increasing wall thickness relationship between the anti-resonant tubes from the outside to the inside, this invention maintains the low-loss light-guiding characteristics of the hollow-core optical fiber with minimal impact on the low-loss bandwidth range. Ultimately, it effectively improves the tolerance of the hollow-core optical fiber to manufacturing tolerances and reduces the manufacturing difficulty of the hollow-core optical fiber.

The invention belongs to the field of optics, relates to a photon control technology, provides a method for regulating and controlling in-plane deflection of light beams through chiral liquid crystal topological solitons with 1 / 2 topological defects, and particularly relates to a light beam regulating and controlling method for constructing form-adjustable CFs topological solitons in high-birefringence chiral liquid crystals based on optical tweezers. Firstly, through the design of a wedge-shaped liquid crystal box (the thickness is linearly and progressively increased from 1 / 2 of a screw pitch p to the screw pitch p), optical tweezers in a high-refraction liquid crystal system (delta n is approximately equal to 0.4) can realize effective focusing, and then a CFs topological soliton structure with a specific form is accurately written in a TIC region (namely a transition region of a vertical nematic phase and a fingerprint texture) of the wedge-shaped liquid crystal box in combination with a displacement platform; and finally, flexible, programmable and non-mechanical light beam deflection control is realized by utilizing controllable formation and high-birefringence light guide characteristics of chiral liquid crystal topological solitons, and a brand new technical path is provided for the development of photon integration and reconfigurable optical systems in the future.