LARGAN PRECISION CO., LTD.

An imaging lens module includes an optical element holder being one-piece formed, a lens element and a light folding component corresponding to the lens element. Each of two side surfaces of the optical element holder has a light through hole, and light passes through the optical element holder via the light through holes. The optical element holder includes a lens element accommodation portion and a folding component accommodation portion respectively for the lens element and the light folding component to be disposed therein. The light folding component includes a light receive surface, a first reflection surface and a light exit surface. The light enters the light folding component from the light receive surface, the first reflection surface is configured to reflect the light coming from the light receive surface so as to redirect the light, and the light exits the light folding component from the light exit surface.

A variable aperture module includes a blade set, a fixing portion, a rotating portion, a driving unit and a position detecting unit. The blade set includes a plurality of blades, which form a light through hole. The rotating portion is for driving each of the blades to rotate so as to adjust a size of the light through hole. The driving unit is configured for driving the rotating portion to rotate, and includes a first magnet element and a first driving coil. The first driving coil is configured to generate a driving force with the first magnet element. The position detecting unit includes a first detecting magnet, a second detecting magnet, a first hall element and a second hall element. When any of the first hall element and the second hall element detects a magnetic field, the position detecting unit outputs a position signal.

An optical path folding camera module includes a light folding element, an object-side lens element, an image-side lens element, and a light-blocking sheet. The light folding element has a reflection surface. The object-side lens element has an optical surface being spherical or aspheric and being disposed corresponding to the reflection surface. The light-blocking sheet is disposed between the optical surface and the reflection surface. The light-blocking sheet includes an object-side surface, an image-side surface, a light-blocking part, and a light opening. The image-side surface is disposed opposite to the object-side surface and facing towards the reflection surface. The light-blocking part is connected to the object-side surface and the image-side surface and has a light-blocking surface. The light opening is defined by the light-blocking surface. The light-blocking surface continuously extends towards the object-side surface and the image-side surface without any crack.

An imaging lens module includes an imaging lens, an adjustable aperture module, a first spacer and a second spacer. The adjustable aperture module is disposed between an object-side lens group and an image-side lens group of the imaging lens and comprises a blade assembly, fixed shafts, a movable component and a driving mechanism. The blade assembly includes at least two light-blocking blades forming a light pass aperture. The driving mechanism is to rotate the movable component in a circumferential direction, allowing the blade assembly to move relative to the fixed shafts for varying an aperture size of the light pass aperture. The fixed shafts are disposed on the first spacer. The second spacer and the first spacer together form an inner space in which the adjustable aperture module is accommodated. The second spacer receives and is in physical contact with the object-side lens group.

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.

An imaging lens assembly module includes at least one lens element and a barrel. The at least one lens element has a central axis. The at least one lens element is accommodated in the barrel, and the barrel includes a low reflective cluster layer disposed on a surface of the barrel. A composition of the low reflective cluster layer includes a metallic element and a fluorine.

A composite element includes a composite structure. The composite structure includes a substrate and a composite layer, and the composite layer is disposed on a surface of the substrate. A material of the substrate is an aluminum alloy, and the composite layer includes an alloy layer. The alloy layer includes at least three metals, and the at least three metals include a zirconium, a copper and an aluminum.

An imaging optical system includes an infrared light absorbing element, an infrared light reducing film and a plate element in order along a paraxial path. The infrared light absorbing element is made of an infrared light absorbing plastic material, and the infrared light absorbing element is configured to refract a light. The infrared light reducing film is closer to an image surface of the imaging optical system than an incident surface of the infrared light absorbing element to the image surface of the imaging optical system. The plate element is disposed between the infrared light reducing film and the image surface, the plate element includes a translucent portion, a holder portion and a taper structure coating. The taper structure coating is disposed on at least one of an incident surface and an exit surface of the translucent portion.

An optical imaging lens assembly includes seven 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 and a seventh lens element. The seventh lens element has an image-side surface being concave in a paraxial region thereof. At least one of an object-side surface and the image-side surface of the seventh lens element has at least one critical point in an off-axis region thereof. The object-side surface and the image-side surface of the seventh lens element are both aspheric.

An imaging lens assembly module includes a lens barrel, a catadioptric lens assembly, an imaging lens assembly, a first fixing element and a second fixing element. The lens barrel has a first relying surface and a second relying surface, which face towards an object side of the imaging lens assembly module. The catadioptric lens assembly relies on the first relying surface. The imaging lens assembly is disposed on an image side of the catadioptric lens assembly, and relies on the second relying surface. The first fixing element is for fixing the catadioptric lens assembly to the lens barrel. The second fixing element is for fixing the imaging lens assembly to the lens barrel. The catadioptric lens assembly is for processing at least twice internal reflections of an image light in the imaging lens assembly module, and for providing optical refractive power.