JP2007086818A5 - - Google Patents

Claims (7)

1. A first lens, a second lens, and a third lens disposed in order from the object side toward the image plane; the first lens having positive power with a convex surface facing the object side; The second lens is a meniscus lens having a concave surface facing the object side, and the third lens is an aspheric lens having one or a plurality of aspherical inflection points, A diaphragm is disposed between one lens and the second lens, the imaging surface is a light receiving element, a composite focal length of the digital camera photographing lens is f, and an object-side incident surface of the first lens When the distance to the image plane is Σd,
0.50 <Σd / f <1.5
Satisfactory lens for digital cameras.   A first lens, a second lens, and a third lens disposed in order from the object side toward the image plane; the first lens having positive power with a convex surface facing the object side; The second lens is a meniscus lens having negative power with a concave surface facing the object side, and the third lens is an aspheric lens having one or more aspherical inflection points. A photographic lens for a digital camera, wherein the imaging surface is a light receiving element.   A first lens, a second lens, and a third lens disposed in order from the object side toward the image plane; the first lens having positive power with a convex surface facing the object side; The second lens is a meniscus lens having a concave surface facing the object side, and the third lens is an aspheric lens having a positive power having one or a plurality of aspherical inflection points. A photographic lens for a digital camera, wherein the imaging surface is a light receiving element. In any one of Claims 1-3,
An imaging lens for a digital camera, wherein the first lens has a stronger power than the second and third lenses. In any one of Claims 1-4,
When the combined focal length of the digital camera photographing lens is f and the focal length of the first lens is f1,
0.50 <f1 / f <1.5
Satisfactory lens for digital cameras. In claim 2 or claim 3,
When the combined focal length of the digital camera photographing lens is f and the distance from the object-side incident surface of the first lens to the imaging surface is Σd,
0.50 <Σd / f <1.5
Satisfactory lens for digital cameras. In any one of Claims 1-6,
The third lens is a photographic lens for a digital camera in which a peripheral portion of the lens surface on the image plane side is convex on the image plane side, and a maximum emission angle of a principal ray of the photographic lens for a digital camera is 30 degrees or less.

Images