摘要:
An imaging lens comprises a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4), which are arranged in ascending sequence, starting from the lens nearest to the object. The first lens (L1) has a double-convex shape and positive refractive power. The second lens (L2) has a double-concave shape and negative refractive power. The third lens (L3) has a meniscus shape with its convex surface facing an image plane, and has positive refractive power. The fourth lens (L4) has a meniscus shape with its convex surface facing the object. A chromatic aberration occurred in the first lens (L1) is corrected by the second lens (L2). A chromatic aberration occurred in the third lens (L3) is corrected by the fourth lens (L4).
摘要:
An imaging lens has a compact shape and sufficiently compensates for various aberrations.The imaging lens includes a first lens, a second lens, and a third lens disposed sequentially, with the first lens toward an object. The conditions “0.5H
摘要:
An imaging lens has a compact shape and sufficiently compensates for various aberrations.The imaging lens includes a first lens, a second lens, and a third lens disposed sequentially, with the first lens toward an object. The conditions “0.5H
摘要:
A first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) are arranged in this order from an object side. The first lens (L1) has a biconvex shape and a positive refracting power. The second lens (L2) has a meniscus shape that is convex toward the object side, and has a negative refracting power. The third lens (L3) has a meniscus shape that is convex toward an image side, and has a positive refracting power. The fourth lens (L4) has a meniscus shape that is convex toward the object side, and has a negative refracting power. A chromatic aberration generated by the first lens (L1) is corrected by the second lens (L2). A chromatic aberration generated by the third lens (L3) is corrected by the fourth lens (L4).
摘要:
An imaging lens comprises a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4), which are arranged in ascending sequence, starting from the lens nearest to the object. The first lens (L1) has a double-convex shape and positive refractive power. The second lens (L2) has a double-concave shape and negative refractive power. The third lens (L3) has a meniscus shape with its convex surface facing an image plane, and has positive refractive power. The fourth lens (L4) has a meniscus shape with its convex surface facing the object. A chromatic aberration occurred in the first lens (L1) is corrected by the second lens (L2). A chromatic aberration occurred in the third lens (L3) is corrected by the fourth lens (L4).
摘要:
A first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) are arranged in this order from an object side. The first lens (L1) has a biconvex shape and a positive refracting power. The second lens (L2) has a meniscus shape that is convex toward the object side, and has a negative refracting power. The third lens (L3) has a meniscus shape that is convex toward an image side, and has a positive refracting power. The fourth lens (L4) has a meniscus shape that is convex toward the object side, and has a negative refracting power. A chromatic aberration generated by the first lens (L1) is corrected by the second lens (L2). A chromatic aberration generated by the third lens (L3) is corrected by the fourth lens (L4).
摘要:
From an object, a first lens that is a meniscus lens having a convex surface that faces an object, a second lens that faces a concave surface of the first lens, a third lens having a concave surface that faces the second lens, and a fourth lens that is a positive lens having a convex back surface, (1) ν3
摘要:
From an object, a first lens that is a meniscus lens having a convex surface that faces an object, a second lens that faces a concave surface of the first lens, a third lens having a concave surface that faces the second lens, and a fourth lens that is a positive lens having a convex back surface, (1) ν3