Abstract: The wide-angle imaging lens module includes four lenses arranged from an object side to an image side in a sequence of: the first lens, having a positive refractive power, a convex surface on the object side and at least one aspheric surface; a diaphragm; the second lens, having a positive refractive power, a concave surface on the object side and at least one aspheric surface; the third lens, having a positive refractive power, a concave surface on the object side and at least one aspheric surface; the fourth lens, having a negative refractive power, a convex surface on the object side and at least one aspheric surface. The first and the second lenses perform a symmetry concave, providing the wider field of view angle and the larger aperture. A structural design that allows lenses to restrain better aberrations performances of aspheric surfaces further provides high-definition and high imaging qualities.

Abstract: The wide-angle imaging lens module includes four lenses arranged from an object side to an image side in a sequence of: the first lens, having a positive refractive power, a convex surface on the object side and at least one aspheric surface; a diaphragm; the second lens, having a positive refractive power, a concave surface on the object side and at least one aspheric surface; the third lens, having a positive refractive power, a concave surface on the object side and at least one aspheric surface; the fourth lens, having a negative refractive power, a convex surface on the object side and at least one aspheric surface. The first and the second lenses perform a symmetry concave, providing the wider field of view angle and the larger aperture. A structural design that allows lenses to restrain better aberrations performances of aspheric surfaces further provides high-definition and high imaging qualities.

Abstract: A single focus wide-angle lens module includes a fixed aperture diaphragm, a first, a second, a third and a forth lens arranged from an object side to an image side in the following sequence: the first lens, the fixed aperture diaphragm, the second lens, the third lens and the forth lens. The first lens has a negative refractive power, a concave surface toward the image side, and at least one aspheric surface. The second lens has a positive refractive power and a concave surface toward the object side, and said second lens is made of glass. Further, the third lens has a meniscus shape, a positive refractive power, a concave surface toward the object side, and at least one aspheric surface. The fourth lens has a positive refractive power, a convex surface toward the object side, and at least one aspheric surface.

Abstract: The present invention provides a five-piece imaging lens module including a fixed diaphragm and an optical module. The optical module includes five lenses arranged from an object side to an image side in a sequence of: the first lens, having a positive refractive power, a concave surface, and having at least one aspheric surface; the diaphragm; the second lens, having a negative refractive power, a concave surface, and having at least one aspheric surface; the third lens, having a positive refractive power, a convex surface, and having at least one aspheric surface; the fourth lens, having a concave surface, and having at least one aspheric surface; the fifth lens, having a convex on the object side near to the optic axis, and having at least one aspheric surface. With the fifth lens, the present invention provides a better resolving power.

Abstract: A single focus wide-angle lens module includes a fixed aperture diaphragm, a first, a second, a third and a forth lens arranged from an object side to an image side in the following sequence: the first lens, the fixed aperture diaphragm, the second lens, the third lens and the forth lens. The first lens has a negative refractive power, a concave surface toward the image side, and at least one aspheric surface. The second lens has a positive refractive power and a concave surface toward the object side, and said second lens is made of glass. Further, the third lens has a meniscus shape, a positive refractive power, a concave surface toward the object side, and at least one aspheric surface. The forth lens has a positive refractive power, a convex surface toward the object side, and at least one aspheric surface.

Abstract: A single focus wide-angle lens module includes a fixed aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens arranged from an object side to an image side in a sequence of: the first lens, the diaphragm, the second lens, the third lens and the fourth lens. The first lens has a concave surface on the image side and at least one aspheric surface. The second lens has a positive refractive power, a concave surface on the object side and at least one aspheric surface. The third lens has a meniscus shape, a negative refractive power, a concave surface on the object side and at least one aspheric surface. The fourth lens has a positive refractive power, a convex surface on the object side and at least one aspheric surface.

Abstract: A single focus wide-angle lens module includes a fixed aperture diaphragm, a first lens and a second lens arranged from an object side to an image side in a sequence of: the diaphragm, the first lens and the second lens. The first lens has a positive refractive power, a concave surface on the object side and at least one aspheric surface. The second lens has a negative refractive power, a convex surface on the object side and at least one aspheric surface.

Abstract: A single focus wide-angle lens module includes a fixed aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens arranged from an object side to an image side in a sequence of: the first lens, the diaphragm, the second lens, the third lens and the fourth lens. The first lens has a concave surface on the image side and at least one aspheric surface. The second lens has a positive refractive power, a concave surface on the object side and at least one aspheric surface. The third lens has a meniscus shape, a negative refractive power, a concave surface on the object side and at least one aspheric surface. The fourth lens has a positive refractive power, a convex surface on the object side and at least one aspheric surface.

Abstract: A wide-angle imaging lens module includes a fixed aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens arranged from an object side to an image side in a sequence of: the first lens of a negative refractive power with a meniscus shape, having a concave surface on the image side and at least one aspheric surface; the diaphragm; the second lens of a positive refractive power, having a convex surface on the object side and at least one aspheric surface; the third lens of a negative refractive power, having a concave surface on the image side and at least one aspheric surface; the fourth lens of a positive refractive power, having a convex surface on the object side and at least one aspheric surface.

Abstract: An imaging lens module includes a fixed aperture stop and an optical module, and the optical module includes a first, a second, a third and a fourth lenses. The first lens has a meniscus lens with positive refractive power and a concave surface disposed towards the image. The second lens has a meniscus lens with negative refractive power and a concave surface disposed towards the image. The third lens has a meniscus lens with positive refractive power and a convex surface disposed towards the image. The fourth lens has a concave surface disposed towards the object.

Abstract: An imaging lens module includes a fixed diaphragm and an optical module. The optical module includes first, second, third and fourth lenses arranged from an object side to an image side in a sequence of: a diaphragm, the first lens being a double-convex lens, the second lens having a negative refractive power and a concave surface disposed towards the object side, the third lens having a positive refractive power and a meniscus lens with a convex surface disposed towards the image side, the fourth lens having a convex surface disposed towards the object side and a wavy surface disposed towards the image side and a concave surface disposed towards the image side near the optical axis. With the diaphragm of the imaging lens module and the lens arrangement of the optical module, the sensitivity of tolerance of a system can be lowered to achieve a high imaging quality and a good yield rate.