Abstract: An optical lens includes: two transparent substrates, each transparent substrate being provided with two optical surfaces; and two optical waveguide arrays, arranged between the two transparent substrates by means of glue, optical waveguide extending directions of the two optical waveguide arrays being arranged orthogonally; each optical waveguide array including a plurality of optical waveguide units, each optical waveguide unit having a rectangular cross section, and the plurality of optical waveguide units being joined in parallel; an outer contour of the optical waveguide array being a rectangle and an extending direction of the optical waveguide unit and at least two sides of the outer contour of the optical waveguide array forming an angle of 30 to 60 degrees.

Abstract: Provided is a processing method for a single-column and multi-row equivalent negative refractive flat lens, including: processing an optical material into parallel plates including upper and lower surfaces each being a polished surface; cutting the parallel plates into strip-shaped optical waveguides; plating each polished surface with an aluminum film; attaching and gluing the surfaces together to form a single-column and multi-row strip-shaped optical waveguide array; curing the strip-shaped optical waveguide array through heating treatment; cutting the plate of the strip-shaped optical waveguide array into two sets of plates of strip-shaped optical waveguide array arranged in a direction of 45 degrees; and gluing the two sets of plates in such a manner that arrangement directions of the two sets of plates are perpendicular to each other, and then adding protective window sheets on both sides of the glued plates.

Abstract: An optical waveguide unit includes a plurality of reflecting units being the same in structure, and each reflecting unit being any one or a combination of any two of: a metal layer, a total reflecting layer, and a medium reflecting layer; and a plurality of sub waveguides stacked on each other, each of two sides of each sub waveguide being provided with one reflecting unit, at least two of the plurality of sub waveguides having different heights in a stacking direction of the plurality of sub waveguides, and the different heights of the sub waveguides being corresponding to different incident angle directions. The present disclosure also provides an optical waveguide array and a flat lens.

Abstract: The present invention discloses an aluminosilicate glass composition, aluminosilicate glass and a preparation method therefor and application thereof. Based on the total molar weight of the aluminosilicate glass composition, the aluminosilicate glass composition comprises, by oxide, 67-74 mol % of SiO2, 10-15 mol % of Al2O3, 0-5 mol % of B2O3, 1-10 mol % of MgO, 1-10 mol % of CaO, 0-3 mol % of SrO, 2-8 mol % of BaO, 0.1-4 mol % of ZnO, 0.1-4 mol % of RE2O3 and less than 0.05 mol % of R2O, wherein RE represents rare earth elements, and R represents alkali metals.

Abstract: Provided are a view field control apparatus applied in an optical imaging system and an optical imaging system. The view field control apparatus applied in the optical imaging system includes a base body that is light-transmittable; and a plurality of light-shielding portions disposed in the base body and parallel to each other. The plurality of light-shielding portions is sequentially disposed in a first direction of the base body and at least two adjacent light-shielding portions in the plurality of light-shielding portions are spaced apart from each other to form a light-transmittable region between the two adjacent light-shielding portions.

Abstract: An air ionization display device includes: a pulse-light-source module configured to generate a plurality of synchronous pulse light beams; and a light field control module, the plurality of pulse light beams being projected to the light field control module and the light field control module being configured to adjust and merge the plurality of pulse light beams and ionize air in a display area to form a holographic real image.

Abstract: An optical waveguide unit, an optical waveguide array including optical waveguide units, and a flat lens including optical waveguide arrays. The optical waveguide unit includes: at least one group of total reflection layers, each group including at least one type of total reflection layer, and each type of total reflection layer including at least one single total reflection layer; and at least two sub-waveguides, one group being arranged between every two adjacent sub-waveguides.

Abstract: An optical lens includes: two transparent substrates, each transparent substrate being provided with two optical surfaces; and two optical waveguide arrays, arranged between the two transparent substrates by means of glue, optical waveguide extending directions of the two optical waveguide arrays being arranged orthogonally; each optical waveguide array including a plurality of optical waveguide units, each optical waveguide unit having a rectangular cross section, and the plurality of optical waveguide units being joined in parallel; an outer contour of the optical waveguide array being a rectangle and an extending direction of the optical waveguide unit and at least two sides of the outer contour of the optical waveguide array forming an angle of 30 to 60 degrees.

Abstract: An optical waveguide unit includes a plurality of reflecting units being the same in structure, and each reflecting unit being any one or a combination of any two of: a metal layer, a total reflecting layer, and a medium reflecting layer; and a plurality of sub waveguides stacked on each other, each of two sides of each sub waveguide being provided with one reflecting unit, at least two of the plurality of sub waveguides having different heights in a stacking direction of the plurality of sub waveguides, and the different heights of the sub waveguides being corresponding to different incident angle directions. The present disclosure also provides an optical waveguide array and a flat lens.

Abstract: Provided is a processing method for a multi-row, multi-column flat lens with an equivalent negative refractive index, which includes: performing photoresist coating, masking and exposure on the photolithography surface; removing photoresist in an unexposed block, and forming a rectangular groove; coating a surface of an exposed block and all surfaces of the rectangular groove with a protective layer, and then coating a side surface of the rectangular groove with a reflective film; removing the protective layer on the surface of the exposed block and the bottom surface of the rectangular groove, then filling up the groove with a filling material, and further processing the front and rear surfaces of the parallel plate in such a manner that a parallel misalignment between the front and rear surfaces thereof is smaller than 1?; and adding a protective window sheet on each of the front and rear surfaces of the new parallel plate.

Abstract: Provided is a processing method for a multi-row, multi-column flat lens with an equivalent negative refractive index, which includes: performing photoresist coating, masking and exposure on the photolithography surface; removing photoresist in an unexposed block, and forming a rectangular groove; coating a surface of an exposed block and all surfaces of the rectangular groove with a protective layer, and then coating a side surface of the rectangular groove with a reflective film; removing the protective layer on the surface of the exposed block and the bottom surface of the rectangular groove, then filling up the groove with a filling material, and further processing the front and rear surfaces of the parallel plate in such a manner that a parallel misalignment between the front and rear surfaces thereof is smaller than 1?; and adding a protective window sheet on each of the front and rear surfaces of the new parallel plate.

Abstract: Provided is a processing method for a single-column and multi-row equivalent negative refractive flat lens, including: processing an optical material into parallel plates including upper and lower surfaces each being a polished surface; cutting the parallel plates into strip-shaped optical waveguides; plating each polished surface with an aluminum film; attaching and gluing the surfaces together to form a single-column and multi-row strip-shaped optical waveguide array; curing the strip-shaped optical waveguide array through heating treatment; cutting the plate of the strip-shaped optical waveguide array into two sets of plates of strip-shaped optical waveguide array arranged in a direction of 45 degrees; and gluing the two sets of plates in such a manner that arrangement directions of the two sets of plates are perpendicular to each other, and then adding protective window sheets on both sides of the glued plates.