Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, a first driving assembly, and a circuit assembly. The movable portion is used for connecting to an optical element. The movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the movable portion to move relative to the fixed portion. The circuit assembly is used for connecting to an external circuit, and is affixed on the fixed portion.

Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first, second, seventh, and eighth lenses are with refractive power. The third lens is with negative refractive power and includes a concave surface facing the object side. The fourth lens is with positive refractive power. The fifth lens is with positive refractive power and includes a convex surface facing the object side. The sixth lens is with positive refractive power and includes a convex surface facing the image side. The ninth lens is with positive refractive power and includes a convex surface facing the object side. An air gap is disposed between the sixth lens and the seventh lens.

Abstract: An optical imaging system includes seven 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 and a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The seventh lens element has negative refractive power, and the object-side surface of the seventh lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the optical imaging system has at least one inflection point in an off-axis region thereof.

Abstract: The present invention discloses a camera optical lens including, from an object side to an image side in sequence, 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, and a fifth lens having a refractive power. The camera optical lens satisfies the following conditions: 8.00?f, 0.90?f/TTL, 0.40?f1/f?0.85, ?1.10?f3/f4??0.40, and 0.30?d2/d4?2.00. The camera optical lens has large aperture, long focal length and small distortion.

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 with a negative refractive power; a third lens, an image-side surface thereof is a convex surface; a fourth lens with a negative refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a concave surface; a fifth lens; and a sixth lens; wherein TTL is an on-axis distance from an object-side surface of the first lens to an imaging surface, ImgH is a half of a diagonal length of an effective pixel region on the imaging surface, and TTL and ImgH satisfy: TTL/ImgH?1.35; an effective focal length f3 of the third lens and an effective focal length f of an optical imaging lens assembly satisfy: 2.5?f3/f?4.0.

Abstract: A lens driving device, a camera device, and an electronic apparatus are provided that include a base not susceptible to thermal deformation. A lens driving device includes a movable body including a lens support body, and a base configured to support the movable body so as to be able to move in an optical axis direction of a lens. The base includes a base body formed from a resin and having a rectangular plate shape when viewed along the optical axis direction of the lens, and a ring shaped metal member embedded in the base body. The metal member is formed with a projecting portion facing outward at each side of a rectangular shape and exposed from the base body.

Abstract: An optical imaging lens proofed against field curvatures, in an imaging module, and the module being used in an electronic device, is, from an object side to an image side, composed of a first lens with a positive refractive power, a second lens, a third lens, a fourth lens with a negative refractive power, a fifth lens, and a sixth lens with a negative refractive power. The optical imaging lens satisfies the formula ?3 mm?1<FNO/f6<?0.1 mm?1, ?0.065 mm/°<f6/FOV<?0.03 mm/°, wherein FNO is a F-number of the optical imaging lens, f6 is a focal length of the sixth lens, and FOV is a maximum field of view of the optical imaging lens.

Abstract: An anti-reflective glass, a preparation method and an application thereof are provided. The anti-reflective glass comprises a glass matrix, at least one surface of the glass matrix is provided with an undulating hill morphology layer, which forms a whole piece with the glass matrix, the hill morphology layer consists of a plurality of irregularly distributed hill raised micro-structures along a Z-axis direction. The present anti-reflective glass has hill morphology surface which can significantly reduce the light reflectivity and increase the light transmittance, the perspective effect of the light is improved; the preparation method simplifies the etching process effectively, and the condition is controllable, the undulating hill morphology formed on the glass surface by etching is effectively ensured, and the optical performance is stable.

Abstract: An imaging lens (100). The imaging lens (100) sequentially consists of, from the object side to the image side: a first lens (L1) having refraction power, the object side surface (S1) of the first lens (L1) being a convex surface at the optic axis; a second lens (L2) having refraction power, the object side surface (S3) of the second lens (L2) being a convex surface at the optic axis; and a third lens (L3) having refraction power. The imaging lens (100) satisfies the condition that FNO*L>15.5, wherein FNO represents an f-number of the imaging lens (100), L represents an aperture diameter of the first lens (L1), and the unit of L is mm.

Abstract: Provided are an optical film, a polarizing plate including same, and a display device including same, the optical film comprising a first layer and second and third layers sequentially formed on the first layer, wherein the first layer and the third layer are each formed directly on the second layer, the first layer is a reverse wavelength dispersive negative A layer, the third layer is a positive C layer, and the ratio of the thickness of the second layer to the thickness of the third layer (the thickness of the second layer/the thickness of the third layer) is about 0.2 to about 2.

Abstract: Embodiments of the present disclosure disclose an optical imaging system, comprising, sequentially from an object side to an image side along an optical axis: a prism, reflecting light incident to the prism along a first direction, to cause the light to emerge from the prism along a second direction, and a stop, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially from the prism to an image side along the second direction, each of the first lens to the seventh lens has a refractive power. A total effective focal length f of the optical imaging system and an entrance pupil diameter EPIC of the optical imaging system satisfy: f/EPD<1.4.

Abstract: The present disclosure provides an optical system that includes a prism having an incident surface, an exit surface, and one or more reflecting surfaces. The optical system includes a first scanning element configured to scan in a first direction a light that enters and reflect the light in a direction of the incident surface of the prism, and a second scanning element configured to scan in a second direction the light that exits from the exit surface of the prism, the second direction being orthogonal to the first direction. The incident surface of the prism has a convex shape with respect to the first scanning element.

Abstract: A propagation optical system includes: a first optical system; an intermediate optical element; and a second optical system. The first optical system, the intermediate optical element, and the second optical system being sequentially arranged in a direction from the image display element toward the light guide member along an optical axis. The intermediate optical element has a non-rotationally symmetric curved surface, of which shape is non-rotationally symmetric about the optical axis. A cross-sectional shape, of the non-rotationally symmetric curved surface, in a first plane including the optical axis is non-arc shape. The first plane is a plane in which the non-rotationally symmetric surface has a strongest positive power among planes including the optical axis. The propagation optical system is configured to form, between the first optical system and the second optical system, an intermediate image corresponding to an image displayed on the image display element.

Abstract: A projection lens, which is a projection lens to be attached to a projection apparatus body having an electro-optical device, includes: a zoom optical system including a plurality of lenses; a first holding portion that is to be connected to the projection apparatus body and through which light along a first optical axis passes; and a second holding portion through which light along a second optical axis, which is bent with respect to the first optical axis, passes and that is rotatable relative to the first holding portion. The zoom optical system is held by the first holding portion.

Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed part, a movable part, and a driving assembly. The fixed part includes a bottom. The movable part is movable relative to the fixed part. The movable part holds an optical element with an optical axis. The driving assembly drives the movable part to move relative to the fixed part. The bottom includes a base and an embedded assembly. The embedded assembly is partially embedded in the base. The embedded assembly includes a magnetic-permeable material.

Abstract: An optical element according to some embodiments includes: a plurality of lower electrodes spread on a surface of a lower substrate and including first and second lower electrodes arranged adjacent in a first direction in the lower substrate plane; a plurality of upper electrodes spread on a surface of an upper substrate and including a first upper electrode that faces the first lower electrode and a second upper electrode that faces a portion of the first lower electrode and the second lower electrode; and a conductive member that is sandwiched between and electrically connects the first lower electrode and the second upper electrode, the conductive member being selectively disposed in an overlap region in which the first lower electrode and the second upper electrode overlap when the first lower electrode and the second upper electrode are projected on a virtual plane parallel to the lower substrate or the upper substrate.

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 sequentially disposed from an object side. The optical imaging system satisfies |Pnu|[10?6° C.?1 mm?1]?30, where Pnu is ?Pnui in which i=1, 2, . . . , 7, Pnui is 1/(vti·fi), vti is [DTni/(ni?1)?CTEi]?1, fi is an effective focal length of an i-th lens, ni is a refractive index of the i-th lens, DTni is a rate (dni/dT) of change of the refractive index according to a temperature of the i-th lens, and CTEi is a thermal expansion coefficient of the i-th lens.

Abstract: From an object plane to an image plane along an optical axis, a camera lens including a first lens, a diffractive optical element and a lens module is provided in various embodiments. The first lens has a positive focal power. The diffractive optical element has a positive focal power and a negative dispersion property. A surface that is of the diffractive optical element or the first lens and that faces the object plane side is a convex surface at the optical axis, a surface that is of the diffractive optical element or the first lens and that faces the image plane side is a concave surface at the optical axis. The lens module includes N lenses. At least one of a surface facing the object plane side and a surface facing the image plane side that are of each of the N lenses is an aspheric surface.

Abstract: Disclosed herein is a compact optical device for augmented reality having a ghost image blocking function and a wide field of view. The compact optical device includes: an optical means configured to transmit at least part of real object image light therethrough toward the pupil of an eye of a user; a first reflective means disposed inside the optical means and configured to transfer the augmented reality image light output from an image output unit to a second reflective means; and a second reflective means disposed inside the optical means and to reflect the augmented reality image light, transferred from the first reflective means, and transfer the augmented reality image light to the pupil of the eye of the user, thereby providing an image for augmented reality to the user.

Abstract: Configurations and compositions for frameworks supporting optics such as lenses are described that provide an invariant structure regardless of temperature swings, thereby maintaining alignment and focus. Frameworks may comprise tiered structures of materials having multiple distinct coefficients of thermal expansion. An optical framework includes a first framework portion coupled to a first lens and a second framework portion coupled to a second lens. The first framework portion and second framework portion comprise materials having a coefficient of thermal expansion such that expansion of the first framework portion in one direction is offset by expansion of the second framework portion in an opposite direction.