Abstract: An optical image lens assembly includes nine lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element and a ninth lens element. Each of the nine lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The second lens element has negative refractive power. The image-side surface of the ninth lens element is concave in a paraxial region thereof and has at least one inflection point.

Abstract: A wide-angle lens assembly includes a first lens including negative refractive power and a concave surface, a second lens including a meniscus lens with negative refractive power, a third lens, a fourth lens including positive refractive power and a convex surface, a fifth lens including a biconvex lens, a sixth lens including a biconvex lens, a seventh lens including positive refractive power and a convex surface, an eighth lens including a biconcave lens, a ninth lens including negative refractive power, and a stop disposed between the fourth lens and the sixth lens. The eighth lens is disposed between the fifth and seventh lenses and is cemented with at least one lens. The ninth lens is disposed between the fifth lens and an image side. The wide-angle lens assembly satisfies 1.3<A/IH<2.1 where A is a diameter of the stop and 1H is a maximum image height of the wide-angle lens assembly.

Abstract: Provided is a wide-angle lens, including a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, and a seventh lens, sequentially arranged from an object side. An object-to-image distance of the wide-angle lens is set to d, an entrance pupil diameter of the wide-angle lens is set to HEP, and d/HEP<29.000 is satisfied.

Abstract: An optical display system includes a first display, a plurality of electronic drivers, a controller, and a combiner. Light from a scene is combined with image light from the first display, and the combined light presented to an observer. The combiner includes an electrochromic layer comprising one or more electrochromic regions separated from each other. The electronic drivers are arranged to electrically connect with and drive respective of the electrochromic regions. The controller is configured to control the plurality of electronic drivers to individually address each of the electrochromic regions to selectively drive some of the electrochromic regions to change light transmission of the selectively driven electrochromic regions.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side, wherein TTL/(2*IMG HT)?0.6 is satisfied, where TTL is a distance on an optical axis from an object-side surface of the first lens to an imaging plane of an image sensor, and IMG HT is half a diagonal length of the imaging plane of the image sensor.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element, and each lens element has an object-side surface and an image-side surface. The optical axis region of the image-side surface of the first lens element is concave, the periphery region of the image-side surface of the second lens element is concave, the optical axis region of the image-side surface of the fourth lens element is concave, the optical axis region of the object-side surface of the fifth lens element is concave, the optical axis region of the image-side surface of the sixth lens element is concave, the seventh lens element has negative refracting power, lens elements included by the optical imaging lens are only the seven lens elements, and the following conditions: ALT/(T2+G23)?5.000 is satisfied.

Abstract: An optical imaging system includes a first lens group including a first lens and a second lens, a second lens group including a third lens, a fourth lens, and a fifth lens, and a third lens group including a sixth lens and a seventh lens. The first to seventh lenses are arranged in order from an object side, at least one of the first lens group to the third lens group is moved on an optical axis to change a distance between the first lens group to the third lens group, and the following conditional expression is satisfied: 0.2<BFL/(2*IMG HT)<2.0 where BFL is a distance on the optical axis from an image-side surface of the seventh lens to an imaging surface of an image sensor, and IMG HT is half a diagonal length of the imaging surface of the image sensor.

Abstract: A camera module includes a first optical path conversion unit configured to reflect or refract light incident along a first optical axis in a direction of a second optical axis that intersects the first optical axis, a second optical path conversion unit configured to reflect or refract light incident on the second optical axis in a direction of a third optical axis that respectively intersects the first optical axis and the second optical axis, and an optical imaging system disposed between the first optical path conversion unit and the second optical path conversion unit.

Abstract: Provided is a wide-angle lens, including a lens group and a diaphragm. Lenses in the lens group are sequentially arranged from an object side in a manner sandwiching the diaphragm. A maximum half field of view of the wide-angle lens as a whole is set to ?, 98°<?<120° is satisfied. An effective focal length and an entrance pupil diameter of the wide-angle lens as a whole are set to f and HEP respectively, f/HEP<2.3 is satisfied. The lens group includes a first lens that is located closest to the object side and that is a negative lens with a concave surface facing an image side. An effective radius and a radius of curvature of an image side lens surface of the first lens are set to sd12 and R12 respectively, 0.890<sd12/R12<0.970 is satisfied.

Abstract: A camera optical lens includes, 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 refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power. 2.50?f3/f?6.00, ?2.00?R4/R3??1.00, and 1.00?d1/d2?1.80. f denotes a focal length of the camera optical lens; f3 denotes a focal length of the third lens; 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; d1 denotes an on-axis thickness of the first lens; d2 denotes an on-axis distance from an image-side surface of the first lens to an object-side surface of the second lens. The camera optical lens can achieve good optical performance while achieving ultra-thin, wide-angle lenses having large apertures.

Abstract: Provided is an electronic imaging apparatus including a first and a second image-picking apparatus located on the same side of the electronic imaging apparatus. The first image-picking apparatus includes a first lens system which sequentially includes a first to a seventh lens along its optical axis, the first lens thereof has a positive refractive power, the second lens thereof has a negative refractive power. The second image-picking apparatus includes a second lens system which sequentially includes a first to a seventh lens along its optical axis, where the object-side surface of the first lens is concave and the image-side surface of the first lens is convex, the third lens has a positive refractive power, the fourth lens has negative refractive power, and the fifth lens has a positive refractive power. Half of a maximal field-of-view Semi-FOVT of the first and second lens system Semi-FOVT and Semi-FOVW satisfy 35°<Semi-FOVT<55° and 35°<Semi-FOVW<55°.

Abstract: A wide-angle lens is provided. The wide-angle lens includes, sequentially arranged from an object side, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens and an imaging element. The first lens is a negative lens with a convex spherical surface facing the object side and a concave surface facing an image side. The second lens is a negative lens with a concave surface facing the image side. A combined effective focal length of the first lens and the second lens is set to f12 and a maximum image height is set to HOI, ?1.000<f12/HOI<?0.400 is satisfied.

Abstract: The present disclosure provides an optical imaging lens assembly and an electronic device. The optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, a first lens having a positive refractive power, and an object-side surface of the first lens being a convex surface; a second lens having a negative refractive power; a third lens having a refractive power; a fourth lens having a refractive power; and a fifth lens having a positive refractive power, and an image-side surface of the fifth lens being a concave surface. Here, half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfies Semi-FOV<15°.

Abstract: A camera optical lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens that are sequentially arranged from an object side to an image side. The camera optical lens satisfies following conditions: 0.50?d2/d3?2.00; ?4.00?R1/R2??1.50; and ?8.00?f3/f??4.00, where f denotes a focal length of the camera optical lens; f3 denotes a focal length of the third lens; R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of the image side surface of the first lens; d2 denotes an on-axis distance from an image side surface of the first lens to an object side surface of the second lens; and d3 denotes an on-axis thickness of the second lens. The camera optical lens has good optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: An imaging lens system includes a first lens having refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power and having a convex object-side surface, a seventh lens having refractive power, and an eighth lens having refractive power, wherein a field of view (FOV) of the imaging lens system is 78-85 degrees.

Abstract: Provided is 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, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power. The camera optical lens satisfies following conditions: 58.00?v1?82.00, and ?5.50?f2/f??3.50, where f denotes a focal length of the camera optical lens, f2 denotes a focal length of the second lens, and v1 denotes an abbe number of the first lens. The camera optical lens according to the present disclosure has better optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: An optical imaging system includes four lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements of the optical imaging system has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof, and the image-side surface of the first lens element is convex in a paraxial region thereof. The object-side surface of the fourth lens element is convex in a paraxial region thereof, the image-side surface of the fourth lens element is concave in a paraxial region thereof, and the image-side surface of the fourth lens element has at least one convex shape in an off-axis region thereof.

Abstract: A holographic display device includes a light source configured to emit light, the light including first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength; a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; and a focusing optical system configured to focus the holographic image. The focusing optical system includes a fixed-focus optical system having a fixed focal length, and a variable focus optical system having a focal length that is changed by electrical control. The fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel a chromatic aberration by the variable focus optical system.

Abstract: A photographing lens assembly includes eight lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The eighth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the eighth lens element has at least one critical point in an off-axis region thereof.

Abstract: A wide-angle lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having negative refractive power and a second lens having negative refractive power, wherein the first lens is a meniscus lens and the second lens includes a concave surface facing an image side. The rear lens group includes a third lens having positive refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power, wherein the fifth lens includes a concave surface facing an object side. The wide-angle lens assembly satisfies: 13.6 mm?fK?f1?25.2 mm; wherein fK is an effective focal length of a lens third close to the image side and f1 is an effective focal length of the first lens.