Abstract: One embodiment provides an imaging lens comprising at least a first lens to a fourth lens which have refractive power and are disposed in order from an object-side to an image formation-side, wherein a protection lens is disposed on the front surface of a first surface of the first lens, the first surface being in the direction of the object-side, wherein the protection lens has a thickness of 1.2 millimeters or less and an effective size of 22 millimeters or more; the diameter thereof in the direction of the object-side is greater than the diameter thereof in the direction of the image formation-side; and the protection lens is disposed within 3 millimeters from the first lens.

Abstract: The present invention relates to a camera module, the camera module including a base formed at an upper surface of a PCB (Printed Circuit Board) mounted with an image sensor, and formed with an IRCF (Infrared Cut Filter) at a position corresponding to that of the image sensor, a bobbin vertically reciprocatively formed at an upper surface of the base, and having a bobbin screw thread at an upper surface, a lens barrel formed with a lens barrel screw thread at an outer surface for being screw-connected to an interior of the bobbin and mounted with at least one or more lenses, and a foreign object blocking unit formed at a screw-connected portion between the bobbin and the lens barrel to prevent sticky and adhesive foreign objects from being transmitted to an IRCF (Infrared Cut Filter) in the course of screw-connection between the lens barrel and the bobbin.

Abstract: One embodiment provides an imaging lens comprising at least a first lens to a fourth lens which have refractive power and are disposed in order from an object-side to an image formation-side, wherein a protection lens is disposed on the front surface of a first surface of the first lens, the first surface being in the direction of the object-side, wherein the protection lens has a thickness of 1.2 millimeters or less and an effective size of 22 millimeters or more; the diameter thereof in the direction of the object-side is greater than the diameter thereof in the direction of the image formation-side; and the protection lens is disposed within 3 millimeters from the first lens.

Abstract: Embodiments provide an image pickup lens including a first lens to a fourth lens arranged in sequence from an object side to an image side, the first lens to the fourth lens each having refraction. The first lens and the second lens have negative refraction. The first lens has a second surface facing the image side, and a ratio of an effective radius to a radius of curvature in relation to the second surface is less than 0.96. The first lens, the second lens, and the fourth lens are formed of plastic.

Abstract: An exemplary embodiment of the present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (?) refractive power, a third lens having positive (+) refractive power, a fourth lens having negative (?) refractive power, wherein the imaging lens meets a conditional expression of D4?D3?0, where D3 is a distance from an apex of an object side surface of the third lens to an apex of an image side surface of the third lens, and D4 is an axial distance from the apex of an object side surface of the third lens to an effective diameter of an object side surface of the fourth lens.

Abstract: The present invention relates to a camera module, the camera module including a base formed at an upper surface of a PCB (Printed Circuit Board) mounted with an image sensor, and formed with an IRCF (Infrared Cut Filter) at a position corresponding to that of the image sensor, a bobbin vertically reciprocatively formed at an upper surface of the base, and having a bobbin screw thread at an upper surface, a lens barrel formed with a lens barrel screw thread at an outer surface for being screw-connected to an interior of the bobbin and mounted with at least one or more lenses, and a foreign object blocking unit formed at a screw-connected portion between the bobbin and the lens barrel to prevent sticky and adhesive foreign objects from being transmitted to an IRCF (Infrared Cut Filter) in the course of screw-connection between the lens barrel and the bobbin.

Abstract: Embodiments provide an image pickup lens including a first lens to a fourth lens arranged in sequence from an object side to an image side, the first lens to the fourth lens each having refraction. The first lens and the second lens have negative refraction. The first lens has a second surface facing the image side, and a ratio of an effective radius to a radius of curvature in relation to the second surface is less than 0.96. The first lens, the second lens, and the fourth lens are formed of plastic.

Abstract: The present invention relates to a camera module, the camera module including a base formed at an upper surface of a PCB (Printed Circuit Board) mounted with an image sensor, and formed with an IRCF (Infrared Cut Filter) at a position corresponding to that of the image sensor, a bobbin vertically reciprocatively formed at an upper surface of the base, and having a bobbin screw thread at an upper surface, a lens barrel formed with a lens barrel screw thread at an outer surface for being screw-connected to an interior of the bobbin and mounted with at least one or more lenses, and a foreign object blocking unit formed at a screw-connected portion between the bobbin and the lens barrel to prevent sticky and adhesive foreign objects from being transmitted to an IRCF (Infrared Cut Filter) in the course of screw-connection between the lens barrel and the bobbin.

Abstract: An exemplary embodiment of the present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (?) refractive power, a third lens having positive (+) refractive power, a fourth lens having negative (?) refractive power, wherein the imaging lens meets a conditional expression of D4?D3?0, where D3 is a distance from an apex of an object side surface of the third lens to an apex of an image side surface of the third lens, and D4 is an axial distance from the apex of an object side surface of the third lens to an effective diameter of an object side surface of the fourth lens.

Abstract: An exemplary embodiment of the present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (?) refractive power, a third lens having positive (+) refractive power, a fourth lens having negative (?) refractive power, wherein the imaging lens meets a conditional expression of D4-D3?0, where D3 is a distance from an apex of an object side surface of the third lens to an apex of an image side surface of the third lens, and D4 is an axial distance from the apex of an object side surface of the third lens to an effective diameter of an object side surface of the fourth lens.

Abstract: The present invention relates to a camera module, the camera module including a base formed at an upper surface of a PCB (Printed Circuit Board) mounted with an image sensor, and formed with an IRCF (Infrared Cut Filter) at a position corresponding to that of the image sensor, a bobbin vertically reciprocatively formed at an upper surface of the base, and having a bobbin screw thread at an upper surface, a lens barrel formed with a lens barrel screw thread at an outer surface for being screw-connected to an interior of the bobbin and mounted with at least one or more lenses, and a foreign object blocking unit formed at a screw-connected portion between the bobbin and the lens barrel to prevent sticky and adhesive foreign objects from being transmitted to an IRCF (Infrared Cut Filter) in the course of screw-connection between the lens barrel and the bobbin.

Abstract: An exemplary embodiment of the present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (?) refractive power, a third lens having positive (+) refractive power, a fourth lens having negative (?) refractive power, wherein the imaging lens meets a conditional expression of D4?D3?0, where D3 is a distance from an apex of an object side surface of the third lens to an apex of an image-forming surface, and D4 is an axial distance from the apex of an object side surface of the third lens to an effective diameter of an object side surface of the fourth lens.

Abstract: A secondary optical lens for a lamp is provided, in which the length of one of two axes passing the center of the bottom surface of the lens has minimal value and the projection surface is formed integrally in a three dimensional shape similar to the bottom surface wherein uniform light distribution with at least one curvature point is realized to resolve public nuisance due to stray light and dazzling in diverse indoor and outdoor environments. In addition, the brightness of lighting and energy efficiency may be improved through uniform lighting distribution. Moreover, the bottom surface of the lens and the projection surface can be fabricated with single molding process, so manufacturing process may be simplified and production cost saving is available.