Optical lens assembly and photographing module
OwnerJian Wang, Jun Wang +1inventors
InventorsJian Wang, Jun Wang, Kuo-Chun Hsiao
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Abstract
An optical lens assembly with a first optical axis and a second optical axis parallel to the first optical axis, includes a first element group located on an object side of the optical lens assembly; a second element group located on an image side of the optical lens assembly; and a light guide element disposed at the position where the first and second optical axes pass. The first and second element groups being located on the same side of the light guide element. The optical lens assembly has a long focal length, a compact size and a relatively higher illumination when satisfying a specific condition.
Claims20
An optical lens assembly with a first optical axis and a second optical axis parallel to the first optical axis, and comprising:
- a first element group located on an object side of the optical lens assembly;
- a second element group located on an image side of the optical lens assembly;
- and
- a light guide element passed through by the first and second optical axes pass, and the first and second element groups located on the same side of the light guide element;
- wherein the first element group is disposed along the first optical axis and comprises, in order from the object side to the image side:
- a first lens with positive refractive power, a second lens with refractive power, a third lens with refractive power, and a fourth lens with positive refractive power;
- the second element group is disposed along the second optical axis and comprises an optical filter;
- the optical lens assembly allows light to transmit from the first element group along the first optical axis to the second element group along the second optical axis via the light guide element;
- and a distance from an object-side surface of the first lens to an image-side surface of the fourth lens along the first optical axis is CTL, a maximum image height of the optical lens assembly is IMH, a focal length of the optical lens assembly is f, a focal length of the first lens is f1, and the following conditions are satisfied:
- 0.65<CTL/IMH <1.61 and −0.9<f1/f<0.
A photographing module, comprising:
- a lens barrel;
- an optical lens assembly disposed in the lens barrel;
- and
- an image sensor disposed on an image plane of the optical lens assembly;
- wherein the optical lens assembly with a first optical axis and a second optical axis parallel to the first optical axis, comprises:
- a first element group located on an object side of the optical lens assembly;
- a second element group located on an image side of the optical lens assembly;
- and a light guide element passed through by the first and second optical axes, and the first and second element groups located on the same side of the light guide element;
- the first element group is disposed along the first optical axis and comprises, in order from the object side to the image side:
- a first lens with positive refractive power, a second lens with refractive power, a third lens with refractive power, and a fourth lens with positive refractive;
- the second element group is disposed along the second optical axis and comprises an optical filter;
- the optical lens assembly allows light to transmit from the first element group along the first optical axis to the second element group along the second optical axis via the light guide element;
- and a distance from an object-side surface of the first lens to an image-side surface of the fourth lens along the first optical axis is CTL, a maximum image height of the optical lens assembly is IMH, a focal length of the optical lens assembly is f, a focal length of the first lens is f1, and the following conditions are satisfied:
- 0.65<CTL/IMH <1.61 and −0.9<f1/f <0.
Dependencies are inferred from the claim text.