Abstract: The present invention relates to the technical field of optical lens and discloses a camera optical lens satisfying following conditions: ?3.50?f2/f??1.50, 6.50?d1/d2?13.50, ?0.20?(R9+R10)/(R9?R10)??0.05, and 3.00?R6/f?10.00; where f denotes a focal length of the camera optical lens, f2 a focal length of the second lens, d1 an on-axis thickness of the first lens, d2 an on-axis distance from an image-side surface of the first lens to an object-side surface of the second lens, R6 a curvature radius of an image-side surface of the third lens, R9 a curvature radius of an object-side surface of the fifth lens, and R10 a curvature radius of an image-side surface of the fifth lens. The camera optical lens in the present disclosure satisfies a design requirement of large aperture, ultra-thinness and wide angle while having good optical functions.

Abstract: A short-wavelength infrared imaging lens includes first and second lens groups arranged in order from an object side. The first lens group has a negative refractive power as a whole. The second lens group has a positive refractive power as a whole and includes at least one positive lens that satisfies following conditional expressions (1) and (2): V2p>40??(1) N2p>1.7??(2) Here, N2p is a refractive index N [1.53] of the positive lens at a wavelength of 1.53 ?m, and the Abbe number V2p is an Abbe number of the positive lens in a short-wavelength infrared range and is defined as (N [1.53]?1)/(N [0.9]?N [2.325]) when refractive indexes of the at least one positive lens at wavelengths of 0.9 ?m, 1.53 ?m, and 2.325 ?m are represented by N [0.9], N [1.53], and N [2.325], respectively.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; a seventh lens; and an eighth lens. The camera optical lens satisfies following conditions: 2.40?f1/f?3.50; f2?0.00; and 1.55?n4?1.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f2 denotes a focal length of the second lens; and n4 denotes a refractive index of the fourth lens. The present disclosure can achieve high optical performance while achieving ultra-thin, wide-angle lenses having a big aperture.

Abstract: The present disclosure a camera optical lens is provided including, from an object side to an image side: a first lens having a positive refractive power; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: ?20.00?f5/f??8.00; 2.80?v2/v3?4.50; and ?25.00?(R9+R10)/(R9?R10)??14.00. The camera optical lens can achieve good optical performance while meeting the design requirements for large aperture, wild angle and ultra-thinness.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; a seventh lens; and an eighth lens. The camera optical lens satisfies following conditions: 3.80?f1/f?5.00; f2?0.00; and 1.55?n3?1.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f2 denotes a focal length of the second lens; and n3 denotes a refractive index of the third lens. The present disclosure can achieve high optical performance while achieving ultra-thin, wide-angle lenses having a big aperture.

Abstract: The present disclosure provides a camera optical lens satisfying following conditions: ?0.35?f1/f2??0.25; 1.20?(f1+f4)/f?1.30; 0.18?d1/f?0.22; 2.80?R3/f?3.50; and ?0.28?(R9+R10)/(R9?R10)??0.24, where f denotes a focal length of the camera optical lens; f1, f2 and f4 respectively denote a focal length of a first, second and third lenses; d1 denotes an on-axis thickness of the first lens; R3 and R9 respectively denote a curvature radius of an object-side surface of the second and fifth lenses; and R10 denotes a curvature radius of an image-side surface of the fifth lens. The camera optical lens has a good optical performance and further meets the design requirements of wide angle and ultra-thinness.

Abstract: There is provided an optical system, including a light source, a control unit, and at least one juxtaposed double grating element, including a first grating and a second grating having grating functions, the gratings being spaced apart at a constant distance from each other, each of the two gratings having a center and at least one edge and comprising at least one sequence of a plurality of lines, wherein the spacing between the lines gradually changes from the center of the grating to the edges, the sequence of the plurality of lines of at least one of the gratings has a radial symmetry, and wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output light wave in a given direction.

Abstract: A six-piece optical image capturing system is disclosed. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power, and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens of the optical image capturing system can increase aperture value and improve the imagining quality for use in compact cameras.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: 0.35?f1/f?0.60; and ?5.70?f2/f??2.50, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; and f2 denotes a focal length of the second lens. The camera optical lens can achieve a high optical performance while satisfying design requirements for a long focal length.

Abstract: An optical imaging lens may include a first, a second, a third, a fourth, a fifth, a sixth and a seventh lens element positioned in an order from an object side to an image side along an optical axis. Through designing concave and/or convex surface of the lens elements, the optical imaging lens may have improved imaging quality and improved assembly yield while the optical imaging lens may satisfy (|Sag51/ER51|+|Sag52/ER52|)/2?20.000%, wherein a Sag of an optical boundary of the object-side surface of the fifth lens element is represented by Sag51, a Sag of an optical boundary of the image-side surface of the fifth lens element is represented by Sag52, an effective radius of the object-side surface of the fifth lens element is represented by ER51, and an effective radius of the image-side surface of the fifth lens element is represented by ER52.

Abstract: Provided is a camera optical lens including, sequentially 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 negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: 0.85?f1/f?1.00; 1.50?f3/f2?5.00; and 3.00?R7/d7?7.00. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: An optical imaging lens assembly is provided. The optical imaging lens includes a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), a sixth lens (E6) and a seventh lens (E7) which are provided in sequence from an object side to an image side along an optical axis and have refractive powers. The first lens has a positive refractive power. The fourth lens has a positive refractive power. The sixth lens has a negative refractive power. The seventh lens has a negative refractive power. An object-side surface (S7) of the fourth lens is a concave surface, and an image-side surface (S8) is a convex surface. An object-side surface (S9) of the fifth lens is a convex surface.

Abstract: A camera optical lens is provided, including five lenses, which satisfies the following conditions: 0.60?(R3+R4)/(R3?R4)?0.7; ?5.00?(R5+R6)/(R5?R6)??4.20; 1.10?d8/d9?1.20; and 0.85?(R9+R10)/(R9?R10)?0.89; where R3 denotes a curvature radius of an object-side surface of the second lens; R4 denotes a curvature radius of an image-side surface of the second lens; R5 denotes a curvature radius of an object-side surface of the third lens; R6 denotes a curvature radius of an image-side surface of the third lens; R9 denotes a curvature radius of an object-side surface of the fifth lens; R10 denotes a curvature radius of an image-side surface of the fifth lens; d8 denotes an on-axis distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens; d9 denotes an on-axis thickness of the fifth lens. The camera optical lens satisfies a design requirement of a large aperture, ultra-thinness and a wide angle while having good optical functions.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; a seventh lens; and an eighth lens. The camera optical lens satisfies following conditions: 5.00?f1/f?6.50; f2?0; and 1.55?n6?1.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f2 denotes a focal length of the second lens; and n6 denotes a refractive index of the sixth lens. The present disclosure can achieve ultra-thin, wide-angle lenses having a big aperture.

Abstract: Disclosed is a small lens system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, wherein the first lens has a lens surface convex toward an object, the second lens has a lens surface convex toward the object, the third lens has a lens surface convex toward the object, the fourth lens has a positive refractive power, the fifth lens has a negative refractive power, the sixth lens has a lens surface convex toward an image, the seventh lens has a positive refractive power and is configured such that a lens surface is convex toward the object in the vicinity of an optical axis, and the eighth lens has a negative refractive power and is configured such that an object-side surface and an image-side surface are concave in the vicinity of the optical axis.

Abstract: Disclosed is a small lens system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially arranged from an object, wherein the first lens has a positive refractive power, the second lens has a negative refractive power, the third lens has a positive refractive power, the fourth lens has a negative refractive power, the fifth lens is convex toward the object, is concave toward an image, and has a positive refractive power, the sixth lens has a positive or negative refractive power and is provided with at least one inflection point, and the seventh lens has a positive or negative refractive power and is configured such that the radii of curvature R71 and R72 of the object-side surface and image-side surface of the seventh lens satisfy R71=? and R72=?, respectively.

Abstract: A camera includes an image sensor and a lens assembly. The image sensor includes a pixel array. The pixel array includes imaging pixels arranged in rows and columns. The lens assembly is configured to focus imaging light from a wide field of view onto the image sensor. The lens assembly includes a plurality of lens elements. The lens elements are arranged from widest to narrowest.

Abstract: Wide angle lens for imaging objects disposed away from the optical axis towards the periphery of the field of view.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, which are sequentially arranged from an object side optical imaging system. The first lens has positive refractive power and the second lens has positive refractive power. At least one of the lenses has negative refractive power with a refractive index greater than 1.68.

Abstract: The present disclosure provides a camera lens which has good optical properties and a narrow angle, and includes five lenses. The camera lens includes, from an object 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 positive refractive power. The camera lens satisfies specified relational expressions.