Camera lens assembly
AssigneeZhejiang Sunny Optical Co., Ltd
InventorXinquan WANG
Life of this patent
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Abstract
The present disclosure discloses a camera lens assembly, the camera lens assembly having a total effective focal length f and an entrance pupil diameter EPD, and along an optical axis from an object side to an image side sequentially including a first lens, a second lens, a third lens and a fourth lens, wherein the first lens and the fourth lens have positive refractive powers, an image-side surface of the first lens is a concave surface, and an object-side surface of the fourth lens is a convex surface. In addition, the total effective focal length f and the entrance pupil diameter EPD satisfy: f/EPD≤2.
Claims9
A camera lens assembly, the camera lens assembly along an optical axis from an object side to an image side sequentially comprising:
- a first lens, a second lens, a third lens and a fourth lens,
- wherein, the first lens has a positive refractive power, and an image-side surface of the first lens is a concave surface;
- the fourth lens has a positive refractive power, and an object-side surface of the fourth lens is a convex surface;
- and
- a filter is disposed between the fourth lens and the image side, the filter is a band-pass filter, a band-pass wavelength λ of the band-pass filter fluctuates based on a wavelength of a used light source, a long wave cut-off wavelength of the band-pass wavelength λ is 15 nm to 50 nm longer than a longest wavelength of the wavelength of the used light source, and a short wave cut-off wavelength of the band-pass wavelength λ is 15 nm to 50 nm shorter than a shortest wavelength of the wavelength of the used light source.
Dependencies are inferred from the claim text.