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

Abstract: A photographing lens assembly includes five 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 and a fifth lens element. Each of the five 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 third lens element has negative refractive power, the object-side surface of the third lens element is convex in a paraxial region thereof, and the image-side surface of the third 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 photographing lens assembly is aspheric.

Abstract: An imaging lens system includes a lens element and an aperture element surrounding an imaging optical path and forming an aperture. The aperture element includes a first conical surface, a second conical surface and a contact surface. The first and second conical surfaces surround the imaging optical path. The contact surface is perpendicular to the imaging optical path and contacts the lens element. When the imaging lens system is in a first environment condition, the first conical surface is in contact with the lens element, the second conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region. When the imaging lens system is in a second environment condition, the second conical surface is in contact with the lens element, the first conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region.

Abstract: An adjustable aperture module includes a blade assembly, a fixed component connected to the blade assembly, a movable component connected to the blade assembly, and a driving mechanism. The blade assembly includes light-blocking blades overlapping one another in a circumferential direction surrounding a central axis and together forming a light pass aperture. The movable component is disposed corresponding to the fixed component. The driving mechanism is configured to rotate the movable component in the circumferential direction relative to the fixed component. The driving mechanism includes at least one coil assembly and at least one magnet arranged along the circumferential direction. The coil assembly includes at least two coils. The magnet is disposed on the movable component and includes at least one magnetic pole. The magnetic pole is disposed corresponding to the coil assembly and facing at least two coils of the coil assembly.

Abstract: An optical image lens assembly includes a plurality of optical lens elements. The optical lens elements include a plurality of plastic optical lens elements having refractive power and aspheric surfaces. The plastic optical lens elements are formed by an injection molding method and include at least one defined-wavelength light absorbing optical lens element, and the defined-wavelength light absorbing optical lens element includes at least one defined-wavelength light absorbent.

Abstract: An optical lens module includes a lens element and an adjustable aperture module disposed at object side of the lens element, and the adjustable aperture module includes a blade assembly and a driving component. The blade assembly includes rotatable blades disposed around an optical axis of the lens element to form a light passing aperture. Each rotatable blade includes a rotatable portion and a light blocking portion. The light blocking portion extends and tapers away from the rotatable portion. The rotatable portion has a positioning hole and a dynamic hole. The positioning hole enables rotation of the rotatable blade, and the dynamic hole is disposed close to the positioning hole. The driving component includes a rotatable element corresponding to the dynamic holes to rotate the rotatable blades, to thereby vary aperture size. The light blocking portion includes a protruding segment which extends and tapers toward the light passing aperture.

Abstract: An imaging lens system includes a plastic lens element. The plastic lens element includes an optical effective portion and an outer ring portion. The optical axis passes through the optical effective portion. The outer ring portion surrounds the optical effective portion and includes an annular groove structure, a conical surface, a flat abutting portion and a full-circle connecting portion. The annular groove structure is tapered off. Each of the conical surface and the flat abutting portion is located closer to the optical effective portion than the annular groove structure. The flat abutting portion is in physical contact with an optical element. The full-circle connecting portion is connected to the annular groove structure and located farther away from the optical effective portion than the annular groove structure. The annular groove structure has an annular bottom end surface extending in a direction substantially perpendicular to the optical axis.

Abstract: An imaging optical lens assembly includes, 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 and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element with refractive power has both an object-side surface and an image-side surface being aspheric. The fourth lens element with refractive power has both an object-side surface and an image-side surface being aspheric. The fifth lens element with refractive power has both an object-side surface and an image-side surface being aspheric. The sixth lens element with refractive power has both an object-side surface and an image-side surface being aspheric.

Abstract: An imaging lens system includes an imaging lens assembly, a spacer element and a retaining element. The spacer element is configured to maintain a distance between a first lens element and a second lens element of the imaging lens assembly. The spacer element includes a connecting part connected to the second lens element and a supporting part connected to the connecting part and extending from the connecting part towards an optical axis of the imaging lens assembly. The first lens element is disposed on the supporting part. The retaining element is configured to fix the first lens element to the supporting part. The retaining element includes a retaining surface, and the retaining surface and the first lens element are abutted against each other. There is an air gap between the retaining element and the first lens element, and the air gap is adjacent to the retaining surface.

Abstract: An optical photographing lens assembly includes seven lens elements which are, in order from an object side to an image side along an optical path, a first lens element through 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 object-side surface of the second lens element is convex in a paraxial region thereof. The sixth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one of the seven lens elements has at least one inflection point in an off-axis region thereof.

Abstract: An image lens assembly includes five 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 and a fifth lens element. The first lens element has positive refractive power. The third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.

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: An imaging lens assembly has an optical axis, and includes a plurality of optical elements. The optical elements include a light blocking sheet, and the light blocking sheet includes a through hole surface, a first surface, a second surface, a peripheral surface and a plurality of basin structures. The through hole surface surrounds the optical axis. The first surface and the second surface are connected to and surround the through hole surface. The peripheral surface is connected to the first surface and the second surface, and the peripheral surface is farther from the optical axis than the through hole surface from the optical axis. The basin structures are arranged in interval and around the optical axis, each of the basin structures is caved in from the first surface to the second surface, and each of the basin structures protrudes on the second surface.

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 light pass aperture module, in order along a central axis, includes a blade assembly and a cap. The blade assembly includes a plurality of blades. The blades form a light pass aperture, and the light pass aperture is variable in size with the central axis as a center. The cap covers the blade assembly. The cap has a through hole, and the through hole is disposed corresponding to the light pass aperture. The cap includes a surface level down structure. The surface level down structure is disposed corresponding to one of the blades, and the surface level down structure is closer to the one blade than the through hole.

Abstract: An optical imaging lens system includes five 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof.

Abstract: An optical photographing 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 object-side surface of the sixth lens element is convex 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 photographing system has at least one inflection point.

Abstract: A variable aperture module includes a blade assembly, a positioning element, a driving part and pressing structures. The blade assembly includes movable blades disposed around an optical axis to form a light passable hole with an adjustable size. Each movable blade has a positioning hole and a movement hole adjacent thereto. The positioning element includes positioning structures disposed respectively corresponding to the positioning holes. The driving part includes a rotation element disposed corresponding to the movement holes and is rotatable with respect to the positioning element. The pressing structures are disposed respectively corresponding to the movable blades. Each pressing structure is at least disposed into at least one of the positioning hole and the movement hole of the corresponding movable blade. Each pressing structure at least presses against at least one of the corresponding one positioning structure and the rotation element.

Abstract: An optical imaging lens system includes ten 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, a ninth lens element and a tenth lens element. Each of the ten lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The second lens element has positive refractive power. The image-side surface of the tenth lens element is concave in a paraxial region thereof, and the image-side surface of the tenth lens element has at least one inflection point.

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