Abstract: This invention provides an injection-molded plastic optical lens comprising, in order from a center to an edge thereof: an optical effective portion, a connecting portion and a peripheral portion that are concentrically formed; wherein the lens has an outer diameter D, the optical effective portion has an edge thickness ET1 and a central thickness CT, the connecting portion has a minimum thickness ET2, and the plastic optical lens satisfies the following relations: CT?0.30 mm and ET2/ET1<1.0. At least one lens element with refractive power can be disposed at each of the object side and the image side of the plastic optical lens of the present invention to form an optical lens assembly.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical system comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An optical lens system for taking image comprises three lens elements with refractive power, from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface and a convex image-side surface, and the object-side surface being aspheric; a plastic second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, and the front and image-side surfaces thereof being aspheric; a plastic third lens element with positive refractive power having a convex object-side surface and a concave image-side surface, the front and image-side surfaces thereof being aspheric; wherein an aperture stop is located between the first and second lens elements. By such arrangements, it can reduce the volume and sensitivity of the optical lens system, and furthermore can obtain higher resolution.

Abstract: An optical lens system for taking image comprises three lens elements with refractive power, from the object side to the image side: a first positive lens element having a convex front surface and a concave rear surface, and the front surface being aspheric; a negative plastic second lens element having a concave front surface and a convex rear surface, and the front and rear surfaces thereof being aspheric; a positive plastic third lens element having a convex front surface and a concave rear surface, the front and rear surfaces thereof being aspheric; and an aperture stop located between the first and second lens elements for controlling brightness of the optical system. The focal length of the first lens element is f1, the focal length of the optical lens system is f, and they satisfy the relations: f/f1<0.9.

Abstract: An optical lens system for taking image comprises three lens elements with refractive power, from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface and a convex image-side surface, and the object-side surface being aspheric; a plastic second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, and the front and image-side surfaces thereof being aspheric; a plastic third lens element with positive refractive power having a convex object-side surface and a concave image-side surface, the front and image-side surfaces thereof being aspheric; wherein an aperture stop is located between the first and second lens elements. By such arrangements, it can reduce the volume and sensitivity of the optical lens system, and furthermore can obtain higher resolution.

Abstract: An image pickup lens assembly comprises three lens groups, from the object side to the image side: a first lens group, a second lens group, and a third lens group. The first lens group includes two lenses with refractive power, namely, a first lens with positive refractive power, and a second lens with negative refractive power. The front surface of the first lens is convex, and the rear surface of the second lens is concave. The second lens group includes a meniscus third lens with positive refractive power, the rear surface of the third lens is convex. The third lens group includes a fourth lens with negative refractive power, the front surface of the fourth lens is convex, and the rear surface of the fourth lens is aspheric. An aperture stop is located between the first lens and the second lens of the first lens group for controlling the brightness of the optical system.

Abstract: An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution.

Abstract: An image pickup lens assembly comprises three lens groups, from the object side to the image side: a first lens group, a second lens group, and a third lens group. The first lens group includes two lenses with refractive power, namely, a first lens with positive refractive power, and a second lens with negative refractive power. The front surface of the first lens is convex, and the rear surface of the second lens is concave. The second lens group includes a meniscus third lens with positive refractive power, the rear surface of the third lens is convex. The third lens group includes a fourth lens with negative refractive power, the front surface of the fourth lens is convex, and the rear surface of the fourth lens is aspheric. An aperture stop is located between the first lens and the second lens of the first lens group for controlling the brightness of the optical system.

Abstract: An optical lens system for taking image comprises three lens elements with refractive power, from the object side to the image side: a first positive lens element having a convex front surface and a concave rear surface, and the front surface being aspheric; a negative plastic second lens element having a concave front surface and a convex rear surface, and the front and rear surfaces thereof being aspheric; a positive plastic third lens element having a convex front surface and a concave rear surface, the front and rear surfaces thereof being aspheric; and an aperture stop located between the first and second lens elements for controlling brightness of the optical system. The focal length of the first lens element is f1, the focal length of the optical lens system is f, and they satisfy the relations: f/f1<0.9.

Abstract: An image lens array, from object side, comprises: a first positive meniscus plastic lens with a convex surface facing forward, a second negative meniscus plastic lens with a concave surface facing forward, a third positive meniscus plastic lens with a convex surface facing forward, and an infrared filter disposed in the lens barrel of the image lens array, the central thickness of the first and second lenses are: CT1<1.0 mm, CT2<0.6 mm. The radius of curvature of the front and back surfaces of the first lens are L1R1 and L1R2 that satisfy the condition as: |L1R1/L1R2|<0.5. The radius of curvature of the front and back surfaces of the third lens are L3R1 and L3R2 that satisfy the condition: |L3R1/L3R2|>0.3.

Abstract: An image lens array, from object side, comprises: a first positive meniscus plastic lens with a convex surface facing forward, a second negative meniscus plastic lens with a concave surface facing forward, a third positive meniscus plastic lens with a convex surface facing forward, and an infrared filter disposed in the lens barrel of the image lens array, the central thickness of the first and second lenses are: CT1<1.0 mm, CT2<0.6 mm. The radius of curvature of the front and back surfaces of the first lens are L1R1 and L1R2 that satisfy the condition as: |L1R1/L1R2|<0.5. The radius of curvature of the front and back surfaces of the third lens are L3R1 and L3R2 that satisfy the condition: |L3R1/L3R2|>0.3.

Abstract: The present invention relates to a compact and high resolution imaging lens array that comprises successively from the object side: a first positive lens is a meniscus plastic lens with a concave surface facing forward, a second glass biconvex lens, a third negative lens is a meniscus lens with a concave surface facing forward, a fourth positive lens is a biconvex lens made of plastic, and an aperture is located between the first lens and the second lens. The respective lenses are provided with aspherical surface, and thus the size of the imaging lens array can be reduced and the resolution also can be improved.

Abstract: A single focus lens module includes a mechanical shutter taking lens assembly and there are front lens shutter module, taking lens and holder from the object side to the image side. The taking lens is connected to the holder by threading. The front taking lens assembly is connected the taking lens. The focus of the taking lens can be adjusted to a proper position by threads and the shutter module is then assembled. By this arrangement, the structure of the single focus lens module can be simplified and the precision of the assembly is improved.

Abstract: A single focus lens module includes a mechanical shutter taking lens assembly and there are front lens shutter module, taking lens and holder from the object side to the image side. The taking lens is connected to the holder by threading. The front taking lens assembly is connected the taking lens. The focus of the taking lens can be adjusted to a proper position by threads and the shutter module is then assembled. By this arrangement, the structure of the single focus lens module can be simplified and the precision of the assembly is improved.