Miniature digital camera lens
AssigneeMotorola, Inc.
InventorsDongxue Wang, Kevin Johnson
Life of this patent
Estimating the term…
Abstract
Miniature camera lenses (100, 300) include in order an object side (116, 302) to the image side (118, 304) a first double concave lens (102, 306), a lens group including first convergent meniscus lens (104, 318), a first double convex lens (106, 312), a second convergent meniscus lens (108, 318), a second double concave lens (110, 330), a second double convex lens (112, 336), and a divergent meniscus lens (114, 342). The lenses (100, 300) feature a field of view of about fifty six degrees, low distortion, a relatively long back focal distance, and a relatively low F-number.
Claims20
A digital camera lens comprising
- a first spherical surface lens group facing an object side wherein said first spherical surface lens group has a first focal length F1;
- a second spherical surface lens group facing an image side, said spherical surface second lens group being optically coupled to said first spherical surface lens group, wherein said second spherical surface lens group has a second focal length F2;
- and
- wherein said digital camera lens comprising said first spherical surface lens group and said second spherical surface lens group has a fixed third focal length F.
- wherein said first focal length, said second focal length and said third focal length satisfy the following inequality relations:
- 0.277<F/F1<0.308
- 0.457F/F2<0.537.
A digital camera lens comprising an optical train comprising in order from an object side to an image side:
- a first double concave lens having a first concave surface facing said object side and a second concave surface facing said image side;
- a first convergent meniscus lens having a third concave surface facing said object side and a first convex surface facing said image side:
- a first double convex lens having a second convex surface facing said object side and a third convex surface facing said image side;
- a second convergent meniscus lens having a fourth convex surface facing said object side and a fourth concave surface facing said image side:
- a second double concave lens having a fifth concave surface facing said object side and a sixth concave surface facing said image side;
- a second double convex lens having a fifth convex surface facing said object side and a sixth convex surface facing said image side;
- and
- a divergent meniscus lens having a seventh concave surface facing said object side and seventh convex surface facing said image side.
A digital camera lens comprising an optical train comprising in order from an object side to an image side:
- a first double concave lens having a first concave surface facing said object side and a second concave surface facing said image side;
- a first double convex lens having a first convex surface facing said object side and a second convex surface facing said image side;
- a first convergent meniscus lens having a third concave surface facing said object side and a third convex surface facing said image side;
- a second convergent meniscus lens having a fourth convex surface facing said object side and a fourth concave surface facing said image side;
- a second double concave lens having a fifth concave surface facing said object side and a sixth concave surface facing said image side;
- a second double convex lens having a fifth convex surface facing said object side and a sixth convex surface facing said image side;
- and
- a divergent meniscus lens having a seventh concave surface facing said object side and an seventh convex surface facing said image side.
Dependencies are inferred from the claim text.