The present disclosure provides a prime lens module and an in-vehicle camera system. From an object side to an imaging side thereof, the prime lens module sequentially includes: a first lens with a negative focal power, a second lens with a negative focal power, a third lens with a positive focal power, a fourth lens with a positive focal power, a fifth lens with a positive focal power, a sixth lens with a negative focal power, and a seventh lens with a positive focal power. The first lens is a meniscus spherical lens. The second lens is a biconcave spherical lens. The third lens is a biconvex spherical lens and bonded to the second lens. The fourth lens is a biconvex spherical lens or a biconvex aspheric lens. The fifth lens is a biconvex spherical lens. The sixth lens is a biconcave spherical lens and bonded to the fifth lens.

An imaging lens with better performance including in focusing is disclosed. A first lens group always fixed and having positive refractive power, and a first focus lens group that moves in an optical axis direction at the time of focusing are included in order from the object side to the image side. A last lens group always fixed and having negative refractive power, and a second focus lens group that moves in an optical axis direction at the time of focusing are included in order from the image side to the object side. At least one of the first focus lens group or the second focus lens group has negative refractive power. The conditional expression 0.4<f/ff<1.0, where f: the focal length of the whole system, and ff: the combined focal length from the first lens group to the first focus lens group, is preferably satisfied.

An optical imaging lens includes a first, a second, a third, a fourth, a fifth, a sixth, a seventh and an eighth lens elements from an object side to an image side in order along an optical axis. The first lens element and the second lens element both have positive refracting power. An optical axis region of an object-side surface of the fifth lens element is concave. A periphery region of an image-side surface of the fifth lens element, an optical axis region of an object-side surface of the sixth lens element and an optical axis region of an object-side surface of the seventh lens element are convex. Materials of the third, the fourth and the eighth lens elements are plastic. The eight lens elements are the only lens elements having refracting power in the optical imaging lens.

According to one embodiment, a tip for a laser handpiece includes: a light radiating module configured to radiate a laser toward a target; and a light receiving module configured to receive at least a portion of light which is generated by the laser radiated onto the target as received light. The light radiating module includes: a base which has an inner space formed therein to allow the laser to pass therethrough; a fixing portion which is coupled to a lower portion of the base and has a penetrating hole formed therein to allow the laser to pass therethrough; and a module connecting member which is interposed and fixed between the base and the fixing portion.

The present application discloses an imaging camera, including: a lens holder; a first lens unit, a stop, a second lens unit arranged in the lens holder in a sequence from an object side to an image side. An outer diameter of the first lens unit is greater than an outer diameter of the second lens unit. The stop includes a first supporting area abutting against the first lens unit, a second supporting area abutting against the second lens unit, and a connecting area abutting against the lens holder and connecting the first supporting area to the second supporting area. The first lens unit presses the first supporting area and forces the second supporting area to abutting against the second lens unit.

An optical lens assembly includes five lens elements and provides a TTL/EFL<1.0. In an embodiment, the focal length of the first lens element f1<TTL/2, an air gap between first and second lens elements is smaller than half the second lens element thickness, an air gap between the third and fourth lens elements is greater than TTL/5 and an air gap between the fourth and fifth lens elements is smaller than about 1.5 times the fifth lens element thickness. All lens elements may be aspheric.

An optical imaging system includes a first lens having refractive power; a second lens having refractive power; a third lens having refractive power and cemented to the second lens; a fourth lens having refractive power; a fifth lens having refractive power and cemented to the fourth lens; a sixth lens having refractive power; a seventh lens having refractive power; and an eighth lens having refractive power. The first to eighth lenses are sequentially disposed in numerical order beginning with the first lens from an object side of the optical imaging system toward an imaging plane of the optical imaging system.

The present disclosure discloses an optical lens assembly. The optical lens assembly may include, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens may have negative refractive power, a convex object-side surface and a concave image-side surface. The fourth lens may have positive refractive power, a convex object-side surface and a convex image-side surface. The fifth lens may have positive refractive power, a convex object-side surface and a convex image-side surface. The sixth lens may have negative refractive power, a concave object-side surface and a concave image-side surface. The seventh lens may have positive refractive power and a convex object-side surface.

An optical lens assembly includes five lens elements and provides a TTL/EFL<1.0. In an embodiment, the focal length of the first lens element f1<TTL/2, an air gap between first and second lens elements is smaller than half the second lens element thickness, an air gap between the third and fourth lens elements is greater than TTL/5 and an air gap between the fourth and fifth lens elements is smaller than about 1.5 times the fifth lens element thickness. All lens elements may be aspheric.

A photographing optical lens assembly includes, in order from object side to 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 first lens element has positive refractive power. The second, third, fourth and fifth lens elements have refractive power. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface has at least one inflection point. The seventh lens element with refractive power has an image-side surface being concave in a paraxial region, wherein an object-side surface and the image-side surface of the seventh lens element are both aspheric, and the image-side surface has at least one inflection point.