An optical image capturing system includes, along the optical axis 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. At least one lens among the first to the sixth lenses has positive refractive power. The seventh lens has negative refractive power, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

The invention discloses a five-piece optical lens for capturing image and a five-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; and at least one of the image-side surface and object-side surface of each of the five lens elements is aspheric. The optical lens can increase aperture value and improve the imaging quality for use in compact cameras.

The current invention describes a compact objective lens with enhanced distortion for near-infrared imaging, comprising a positively powered, aspheric, and meniscus first lens element; a negatively powered, aspheric, and meniscus second lens element; a positively powered, aspheric, and biconvex third lens element; a negatively powered, aspheric, and meniscus fourth lens element; a negatively powered, aspheric, and meniscus field corrector element; and a detector assembly comprising a window and a detector plane where the light rays come to focus.

The present disclosure discloses an optical imaging lens assembly. The lens assembly sequentially includes, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, and a fourth lens. The first lens has a positive refractive power, and a convex object-side surface; the second lens has a positive refractive power or a negative refractive power, and a concave object-side surface and a convex image-side surface; the third lens has a positive refractive power, a concave object-side surface, and a convex image-side surface; and the fourth lens has a positive refractive power or a negative refractive power. An effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens assembly satisfy: 1.2<f1/f<1.8.

A three-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power; a second lens element with a refractive power; a third lens element with a positive refractive power; a stop disposed before an image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image source-side surface of the second lens element; and the first lens element or the second lens element is made of glass. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.

The present invention provides a camera lens consisting of five lenses and having good optical properties in near-infrared light, a small size and a bright F number. The camera lens includes, from an object side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, and a fifth lens having a negative refractive power. The camera lens satisfies specific conditions.

A three-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 having an object-side surface being convex near an optical axis and an image-side surface being concave near the optical axis, a stop, a second lens element with a positive refractive power having an image-side surface being convex near the optical axis, at least one of an object-side and the image-side surfaces of the second lens element being aspheric, a third lens element with a refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis, at least one of the object-side and the image-side surfaces of the second and third lens elements being aspheric. Such a system has a wide field of view, large stop, short length and less distortion.

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.

The present disclosure discloses an iris lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens and at least one subsequent lens. Wherein an object-side surface of an lens closest to the image side and having optical power among the at least one subsequent lens is a concave surface. The iris lens further includes an optical filter disposed between the object side and the lens closest to the image side and having optical power, and a band-pass wavelength of the optical filter is from 700 nm to 900 nm.

A projection lens assembly is provided. The projection lens assembly includes sequentially from a source-side to an image-side along an optical axis: a first lens and a second lens. The first lens has a negative refractive power, a source-side surface of the first lens is a concave surface, and an image-side surface of the first lens is a convex surface. The second lens has a positive refractive power, and an image-side surface of the second lens is a convex surface.