OPTICAL LENS
First Claim
1. An optical lens, characterized in that, it comprises:
- a first lens;
a second lens;
a third lens;
a fourth lens;
a fifth lens; and
a sixth lens,wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are sequentially disposed along a direction from an object side to an image side;
wherein the first lens has an object surface and an image surface, the object surface of the first lens faces the object side, the image surface of the first lens faces the image side, the object surface of the first lens is convex, the first lens has a negative focal power, and the image surface of the first lens is concave;
wherein the second lens has an object surface and an image surface, the object surface of the second lens faces the object side, the image surface of the second lens faces the image side, the object surface of the second lens is concave, and the image surface of the second lens is convex;
wherein the third lens has an object surface and an image surface, the object surface of the third lens faces the object side, the image surface of the third lens faces the image side, the object surface of the third lens is convex, the image surface of the third lens is convex, and the third lens has a positive focal power; and
wherein the fourth lens and the fifth lens forms an achromatic lens group, and one of them has a positive focal power and the other has a negative focal power.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical lens comprises: a first lens having a negative focal power; a second lens; a third lens; a fourth lens; a fifth lens, wherein the fourth lens and the fifth lens forms an achromatic lens group; and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are sequentially disposed along a direction from an object side to an image side, wherein the first lens has at least one object surface facing the object side, and the object surface of the first lens is convex, and wherein the second lens has at least one image surface facing the image side, and the image surface of the second lens is convex so as to facilitate forming a concentric circle structure.
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Citations
26 Claims
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1. An optical lens, characterized in that, it comprises:
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a first lens; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are sequentially disposed along a direction from an object side to an image side; wherein the first lens has an object surface and an image surface, the object surface of the first lens faces the object side, the image surface of the first lens faces the image side, the object surface of the first lens is convex, the first lens has a negative focal power, and the image surface of the first lens is concave; wherein the second lens has an object surface and an image surface, the object surface of the second lens faces the object side, the image surface of the second lens faces the image side, the object surface of the second lens is concave, and the image surface of the second lens is convex; wherein the third lens has an object surface and an image surface, the object surface of the third lens faces the object side, the image surface of the third lens faces the image side, the object surface of the third lens is convex, the image surface of the third lens is convex, and the third lens has a positive focal power; and wherein the fourth lens and the fifth lens forms an achromatic lens group, and one of them has a positive focal power and the other has a negative focal power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification