Abstract: An electrophoretic medium comprises a plurality of charged particles disposed in a fluid. The fluid comprises at least about 75, and preferably at least about 95, percent by weight of a hydrocarbon selected from monounsaturated nonenes, nonane and methyloctane. The electrophoretic medium is especially useful in microcell electrophoretic media comprising a substrate having a plurality of cavities, and a sealing layer closing the open ends of the cavities, the cavities being filled with the electrophoretic medium.

Abstract: The disclosure provides an imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis, a movable diaphragm, a first lens with a positive refractive power, a second lens with a negative refractive power, a third lens with a refractive power, a fourth lens with a refractive power, a fifth lens with a refractive power and a sixth lens with a negative refractive power, wherein TSmin is a distance from the movable diaphragm at a minimum distance from an imaging surface of the imaging lens assembly to an object-side surface of the first lens on the optical axis, TSmax is a distance from the movable diaphragm at a maximum distance from the imaging surface of the imaging lens assembly to the object-side surface of the first lens on the optical axis and EPDmin is a minimum entrance pupil diameter of the imaging lens assembly.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens with a refractive power respectively; a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 1.0?CT4/CT3<1.5; and a spacing distance T34 between the third lens and the fourth lens on the optical axis and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy 4.0<T34/T45<15.5.

Abstract: The present disclosure provides a camera optical lens including from an object side to an image side: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive power; a fourth lens having a negative refractive power, a fifth lens having a positive power; and a sixth lens having a negative refractive power; wherein the camera optical lens satisfies following conditions: 60.00?v1?90.00; 60.00?v3?90.00; 1.00?d10/d11?5.00; where v1 denotes an abbe number of the first lens, v3 denotes an abbe number of the third lens, d10 denotes an on-axis distance from the image-side surface of the fifth lens to the object-side surface of the sixth lens, and d11 denotes an on-axis thickness of the sixth lens. The camera optical lens in the present disclosure satisfies a design requirement of ultra wide angle and ultra-thinness while having good optical performance.

Abstract: A lens system for forming an image of light incident from an object side on an imaging element arranged on an image surface side includes: a plurality of lens elements including free-curved surface lenses; and a diaphragm arranged between the plurality of lens elements. The lens elements form a front group arranged on the object side of the diaphragm, and a rear group arranged on the image surface side of the diaphragm. A first lens element closest to the object side in the plurality of lens elements has an aspherical surface that is rotationally symmetrical. The free-curved surface lenses each has a free-curved surface that is asymmetrical with respect to a first direction and a second direction crossing with each other. A free-curved surface lens satisfying a conditional expression “D×(SV?SH)/IH>0.08” is arranged on the rear group in the plurality of lens elements.

Abstract: Discloses a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a positive refractive power, a sixth lens with a positive refractive power, a seventh lens with a positive refractive power, an eighth lens with a negative refractive power and an ninth lens with a positive or negative refractive power. The camera optical lens satisfies: ?5.00?f1/f??2.00; 2.00?d7/d8?12.00. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.

Abstract: A camera optical lens is provided, including from an object side to an image side: a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens having positive refractive power; and a fifth lens having negative refractive power. The camera optical lens satisfies following conditions: ?3.50?f2/f1??2.00; 1.00?(R7+R8)/(R7?R8)?5.00; f3/f??12.00; ?2.50?R10/R9??0.80; 2.00?d7/d8?3.20; and 0.70?d4/d6?1.15. The above camera optical lens may meet design requirements for large aperture, wide angle and ultra-thinness, while maintaining a high imaging quality.

Abstract: A camera optical lens is provided and includes, from an object side to an image side, a first lens to a ninth lens. Each of the first lens, the second lens, the fourth lens, the sixth lens, the seventh lens, and the eighth lens has a positive refractive power, and each of the third lens, the fifth lens, and the ninth lens has a negative refractive power. The camera optical lens satisfies following conditions: 3.50?f1/f?7.00; and 2.00?d11/d12?9.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d11 denotes an on-axis thickness of the sixth lens, and d12 denotes an on-axis distance from an image side surface of the sixth lens to an object side surface of the seventh lens. The camera optical lens meets design requirements for large aperture, wide angle and ultra-thinness while achieving good optical performance.

Abstract: The present invention provides a camera optical lens, including, from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power. The camera optical lens satisfies: ?2.00?f2/f??1.25; —1.50?f4/f5??0.80; 1.50?d6/d8?3.00; ?1.50?(R1+R2)/(R1?R2)??1.00; and 6.00?R9/R10?15.00. The camera optical lens has excellent optical performance while meeting the design requirements of a large aperture, a wide angle, and ultra-thinness.