An optical lens assembly, including a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element sequentially along an optical axis from a first side to a second side, is provided. The optical lens assembly satisfies the conditional expression of D34/D12≥2.600. Furthermore, other optical lens assemblies are also provided.

An optical lens assembly, including a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element sequentially along an optical axis from a first side to a second side, is provided. The optical lens assembly satisfies the conditional expression of D34/D12≥2.600. Furthermore, other optical lens assemblies are also provided.

An optical imaging system includes a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element from an object side to an image side in order along an optical axis. The first lens element to the fifth lens element each include an object-side surface and an image-side surface. The object-side surface of the second lens element has a convex portion in a vicinity of a periphery of the second lens element. The image-side surface of the third lens element has a convex portion in a vicinity of a periphery of the third lens element. The image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis, and the image-side surface of the fifth lens element has a convex portion in a vicinity of a periphery of the fifth lens element.

An optical imaging system includes a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element from an object side to an image side in order along an optical axis. The first lens element to the fifth lens element each include an object-side surface and an image-side surface. The object-side surface of the second lens element has a convex portion in a vicinity of a periphery of the second lens element. The image-side surface of the third lens element has a convex portion in a vicinity of a periphery of the third lens element. The image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis, and the image-side surface of the fifth lens element has a convex portion in a vicinity of a periphery of the fifth lens element.

An imaging lens and an imaging apparatus capable of acquiring a long-distance object image at high resolution and capable of acquiring a short-distance object image in a wide range while, as a whole, being configured small. In order to achieve the object, an imaging lens according to the present invention is an imaging lens consisting of n (n is a natural number equal to or larger than six) lenses including a first lens having negative refractive power and a second lens having positive refractive power in order from an object side and including an n-th lens having negative refractive power and an n−1-th lens having positive refractive power in order from an image side, the imaging lens satisfying a predetermined conditional expression.

An imaging lens and an imaging apparatus capable of acquiring a long-distance object image at high resolution and capable of acquiring a short-distance object image in a wide range while, as a whole, being configured small. In order to achieve the object, an imaging lens according to the present invention is an imaging lens consisting of n (n is a natural number equal to or larger than six) lenses including a first lens having negative refractive power and a second lens having positive refractive power in order from an object side and including an n-th lens having negative refractive power and an n−1-th lens having positive refractive power in order from an image side, the imaging lens satisfying a predetermined conditional expression.

Optical systems that may, for example, be used in remote sensing systems, for example in systems that implement combining laser pulse transmission in LiDAR and that include dual transmit and receive systems. A dual receiver system may include a receiver including an optical system with a relatively small aperture and wide field of view for capturing reflected light from short-range (e.g., <20 meters) objects, and a receiver that includes an optical system with a relatively large aperture and small field of view for capturing reflected light from long-range (e.g., >20 meters) objects. The optical systems may refract the reflected light to photodetectors (e.g., single photo-avalanche detectors (SPADs)) that capture the light. Light captured at the photodetectors may, for example, be used to determine range information for objects or surfaces in the environment.

Optical systems that may, for example, be used in remote sensing systems, for example in systems that implement combining laser pulse transmission in LiDAR and that include dual transmit and receive systems. A dual receiver system may include a receiver including an optical system with a relatively small aperture and wide field of view for capturing reflected light from short-range (e.g., <20 meters) objects, and a receiver that includes an optical system with a relatively large aperture and small field of view for capturing reflected light from long-range (e.g., >20 meters) objects. The optical systems may refract the reflected light to photodetectors (e.g., single photo-avalanche detectors (SPADs)) that capture the light. Light captured at the photodetectors may, for example, be used to determine range information for objects or surfaces in the environment.

This disclosure provides an optical image capturing lens system comprising: a positive first lens element having a convex object-side surface, a negative second lens element, a positive third lens element having a convex image-side surface, a fourth lens element having a concave object-side surface and a convex image-side surface; and a positive fifth lens element having a convex object-side surface at a paraxial region thereof, both of the object-side and image-side surfaces being aspheric, and at least one inflection point is positioned on at least one of the object-side and image-side surfaces thereof. When particular relations are satisfied, the angle at which light projects onto the image plane can be efficiently controlled for increasing the relative illumination and preventing the occurrence of vignetting.

This disclosure provides an optical image capturing lens system comprising: a positive first lens element having a convex object-side surface, a negative second lens element, a positive third lens element having a convex image-side surface, a fourth lens element having a concave object-side surface and a convex image-side surface; and a positive fifth lens element having a convex object-side surface at a paraxial region thereof, both of the object-side and image-side surfaces being aspheric, and at least one inflection point is positioned on at least one of the object-side and image-side surfaces thereof. When particular relations are satisfied, the angle at which light projects onto the image plane can be efficiently controlled for increasing the relative illumination and preventing the occurrence of vignetting.