Abstract: A component for a lens module is selected from a group consisting of a lens barrel, an optical lens, a pressure ring, and a spacer ring. The component includes: a component surface, a flat region located on the component surface, and a microstructure region located on the component surface and adjacent to the flat region. Relative to the flat region, the microstructure region includes a plurality of convex portions and a plurality of concave portions. The convex portions are in a shape of a cone. Any area of 0.1 mm*0.1 mm in the microstructure region has n convex portions, where n?50.

Abstract: An optical lens assembly includes, in order from an object-side to an image-side: a first lens, a stop, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein half of a maximum field of view of the optical lens assembly is HFOV, an f-number of the optical lens assembly is Fno, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, a maximum image height of the optical lens assembly is IMH, a focal length of the optical lens assembly is f, a focal length of the first lens is f1, and the following conditions are satisfied: 0.73<HFOV/(INM*Fno*TL)<1.67, and ?0.58<f/f1<?0.30.

Abstract: An optical lens assembly includes a stop, and includes, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein an incident angle where a main light is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, a maximum optical effective radius of the image-side surface of the sixth lens is CA62, and the following conditions are satisfied: 9.27<CRA/CA62<20.02.

Abstract: An optical lens assembly includes a stop, and includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, and fifth lens, wherein a focal length of the fifth lens is f5, a radius of curvature of an image-side surface of the fifth lens is R10, a distance between the stop to the image plane on the optical axis is SL, satisfying the relation: 1.27<f5*R10/SL<3.68.

Abstract: An interpupillary distance adjustment module includes: a first optical module base including a first slider and a first linkage point; a second optical module base including a second slider and a second linkage point; a linkage mechanism including a linkage rod, a third point and a fourth linkage point; and a base including a first groove, a second groove and a shaft, wherein the first and second grooves are parallel to each other and define a groove direction; wherein when a toggle switch rotates the linkage rod, moves the first optical module base, or moves the second optical module base, the third and fourth linkage points and the first and second linkage points are simultaneously linked and moved, and then the first and second optical module bases are controlled to be equidistantly close to or far away from each other in the groove direction.

Abstract: A lens module includes a lens barrel and a first optical lens. The lens barrel includes a first lens chamber and a second lens chamber arranged along an optical axis, wherein an inner edge surface of the lens barrel has an extension portion, the extension portion is located between the first lens chamber and the second lens chamber and defines a light-passing hole, and the first lens chamber communicates with the second lens chamber via the light-passing hole. The first optical lens is disposed in the first lens chamber and has a first optical zone surrounding the optical axis and a first non-optical zone surrounding an outside of the first optical zone, wherein the first non-optical zone includes a first protrusion, and the first protrusion is disposed in the light-passing hole.

Abstract: An optical lens assembly includes, in order from an object side to an image side: a first lens; a stop; a second lens; a third lens; and an infrared bandpass filter, wherein a maximum field of view of the optical lens assembly is FOV, an f-number of the optical lens assembly is Fno, a radius of curvature of an object-side surface of the third lens is R5, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, an entrance pupil diameter of the optical lens assembly is EPD, a distance from the image-side surface of the first lens to the object-side surface of the second lens along the optical axis is T12, and the following conditions are satisfied: 19.82<FOV*Fno/(R5*TL)<50.37, and 6.58<EPD*TL/T12<24.94.

Abstract: An optical lens assembly includes, in order from an object side to an image side: a stop, a first lens, a second lens, a third lens, a fourth lens, and fifth lens, wherein an Abbe number of the second lens is vd2, an Abbe number of the third lens is vd3, a central thickness of the second lens along the optical axis is CT2, a central thickness of the third lens along the optical axis is CT3, the aperture number of the optical lens assembly is Fno, an incident angle of a main light incident at the position of 60% of the maximum image height of the optical lens assembly is CRA6, and the following conditions are satisfied: 3.54<(vd3*CT3?vd2*CT2)/Fno<8.18 and 28.25<CRA6<35.76.

Abstract: A lens barrel defines a central axis and includes: an object-side opening, an object-side end portion, and an image-side opening. The object-side opening and the object-side end portion are both located at one end of the central axis. The object-side end portion surrounds the object-side opening and has an object-side surface, the object-side surface includes an annular groove, a radial cross-section of the annular groove has first and second line segments, the first line segment is farther away from the central axis than the second line segment, the first and second line segments intersect at a first point, and a included angle is formed between the first and second line segments. The included angle is larger than or equal to 15 degrees and smaller than or equal to 90 degrees. An opening direction of the radial cross-section of the annular groove is away from the central axis.

Abstract: An optical lens assembly includes a stop and, in order 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, and a seventh lens. The optical lens assembly has a half of a maximum field of view of the optical lens assembly a distance from an image-side surface of the seventh lens to an image plane on an optical axis, a radius of curvature of an object-side surface of the fourth lens, and a radius of curvature of an image-side surface of the fourth lens. An appropriate configuration of a high-quality lens module with the maximum field of view and an optical back focal length can be provided, to avoid interference of the structural appearance.

Abstract: A lens module includes: a lens barrel including a annular structure, an inner annular surface surrounding the central axis and an outer annular surface opposite to and surrounding the inner annular surface, wherein the inner annular surface forms an accommodating space; an optical lens assembly and an optical filter sequentially disposed in the accommodating space from the object side to the image side; wherein the annular structure is disposed on the inner annular surface and surrounds the central axis, the annular structure includes at least two step portions and at least two bevel portions, all the step portions and the bevel portions are close to the image side, and the optical filter is disposed on the step portions; and the step portions and the bevel portions are alternately disposed along a annular path of the inner annular surface.

Abstract: An imaging lens assembly of an optical verification system with a FOV greater than 120 degrees, and includes optical lenses from an object side to an image side. The one of the optical lens being the closest to the object side includes: an object side surface and an image side surface of an optical zone; an object side surface of a non-optical-zone surrounding the object side surface of the optical zone; an image side surface of a non-optical zone surrounding the image side surface of the optical zone; and a first connection portion disposed between the image side surface of the optical-zone and the image side surface of the non-optical zone, wherein a first angle between a tangential direction of a surface of the first connection portion and the radial direction is in a range of 15 to 50 degrees.

Abstract: An optical lens assembly includes, in order from the object side to the image side: a stop, a first lens, a second lens, a third lens, and an IR band-pass filter, wherein half of a maximum view angle (field of view) of the optical lens assembly is HFOV, a radius of curvature of an image-side surface of the third lens is R6, a focal length of the optical lens assembly is f, and following condition is satisfied: ?6.83<HFOV/(R6/f)<44.10, which is favorable to the thinning and large field of view of the lens assembly.

Abstract: An optical lens assembly includes, in order from the object side to the image side: a first lens with negative refractive power, a second lens with positive refractive power, a stop, a third lens with positive refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, and an IR band-pass filter. A maximum field of view of the optical lens assembly is FOV, a f-number of the optical lens assembly is Fno, a distance from an object-side surface of the first lens to an image plane along an optical axis is TL, a distance from an image-side surface of the fifth lens to the image plane along the optical axis is BFL, an entrance pupil diameter of the optical lens assembly is EPD, and the following conditions are satisfied: 0.58<FOV/(Fno*100)<1.28 and 4.76<(TL?BFL)/EPD<12.03.

Abstract: A three-piece compact optical lens system includes, in order from the object side to the image side: a flat panel assembly, a first lens element; a stop; a second lens element; and a third lens element. Wherein a distance from an object to an image plane along the optical axis is OTL, a distance from an image-side surface of the flat panel to the image plane along the optical axis is PTL, an image height of the image plane is Y, an object height of a chief ray of the image height of the image plane which corresponds to the image-side surface of the flat panel is P, and they satisfy the relations: 2.5 mm<PTL<4.5 mm; 2.2<P/Y<7.0; 4<OTL/Y<12.

Abstract: A five-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, and a fifth lens element with a negative refractive power, where a radius of curvature of an object-side surface of the third lens element is R5, a central thickness of the third lens element along an optical axis is CT3, and they satisfy the relation: 5<R5/CT3<35. Such a system has a wide field of view, large stop, short length and less distortion.

Abstract: A five-piece infrared single focus lens system includes, in order from the object side to the image side: a stop, a first lens element with a positive refractive power, a second lens element, a third lens element with a positive refractive power, a fourth lens element, a fifth lens element, wherein a focal length of the first lens element is f1, a focal length of the third lens element is f3, a central thickness of the first lens element along an optical axis is CT1, a central thickness of the third lens element along the optical axis is CT3, a radius of curvature of an object-side surface of the first lens element is R1, a radius of curvature of an object-side surface of the third lens element is R5, satisfying the relation: ?1.60<(f1×CT1×R1)/(f3×CT3×R5)<2.43. Such a system has a wide field of view, high resolution, short length and less distortion.

Abstract: A five-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, a fifth lens element with a negative refractive power, wherein a central thickness of the first lens element along an optical axis is CT1, a central thickness of the third lens element along the optical axis is CT3, a central thickness of the fourth lens element along the optical axis is CT4, a central thickness of the fifth lens element along the optical axis is CT5, satisfying the relations: 0.69<CT4/(CT1+CT3+CT5)<1.32, 1.83<(CT1+CT5)/CT3<4.06. Such a system has a wide field of view, high resolution, short length, less distortion taking into account lens production.

Abstract: An optical element is ring-shaped and has an inner peripheral face. The inner peripheral face is formed with a bumpy section. The bumpy section is formed with a plurality of grooves. The grooves are disposed around an axial direction of the optical element. A rib is formed between any adjacent two of the grooves. Each of the grooves has a fifth end and a sixth end along the axial direction. A width of each of the grooves along a circumferential direction is increasing from the sixth end toward the fifth end so that a third angle between two lateral walls of each of the grooves is larger than 0 degree but smaller than 90 degrees.

Abstract: A three-piece infrared single wavelength projection lens system, in order from an image side to an image source side: a stop; a first lens element with a positive refractive power having an image-side surface being convex near an optical axis and an image source-side surface being concave near the optical axis; a second lens element with a negative refractive power having an image source-side surface being concave near the optical axis; and a third lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.