Optical lens assembly, imaging apparatus and electronic device

1 . An optical lens assembly, comprising:

at least one optical element;

wherein at least one of the at least one optical element comprises a multi-layer coating membrane, and the multi-layer coating membrane is formed by alternately stacking high refractive index layers and low refractive index layers;

wherein the multi-layer coating membrane is a dual-bandpass filtering membrane;

wherein the optical element is an optical lens element, a wavelength difference between an incidence at 0 degrees and an incidence at 30 degrees of the optical element comprising the multi-layer coating membrane at 50% transmittance of long-wavelength visible light is dWt50v, an average transmittance in a wavelength range of 450 nm-630 nm of the optical element comprising the multi-layer coating membrane is T4563, an average transmittance in a wavelength range of 700 nm-760 nm of the optical element comprising the multi-layer coating membrane is T7076, a slope from a center position to a position of a maximum effective diameter of the optical lens element is SPsd, and the following conditions are satisfied:

|dWt50v|≤20 nm;

70%≤T4563;

T7076≤3%; and

7.5<|SPsd|.

2 . The optical lens assembly of claim 1 , wherein a proportion of a total transmittance difference between the incidence at 0 degrees and the incidence at 30 degrees of the optical element comprising the multi-layer coating membrane in a wavelength range of 600 nm-700 nm of long-wavelength visible light is RdTv, and the following condition is satisfied:

RdTv≤0.45.

3 . The optical lens assembly of claim 1 , wherein an average wavelength of the incidence at 0 degrees and the incidence at 30 degrees of the optical element comprising the multi-layer coating membrane at 50% transmittance of long-wavelength visible light is Wt50avg, and the following condition is satisfied:

640 nm≤Wt50avg≤670 nm.

4 . The optical lens assembly of claim 3 , wherein a wavelength difference between an incidence at 0 degrees and an incidence at 30 degrees of the optical element comprising the multi-layer coating membrane at 50% transmittance of long-wavelength near-infrared light is dWt50i, and the following condition is satisfied:

|dWt50i|≤30.

5 . The optical lens assembly of claim 4 , wherein a proportion of a total transmittance difference between the incidence at 0 degrees and the incidence at 30 degrees of the optical element comprising the multi-layer coating membrane in a wavelength range of 850 nm-1000 nm of long-wavelength near-infrared light is RdTi, and the following condition is satisfied:

RdTi≤0.45.

6 . The optical lens assembly of claim 1 , wherein a total number of layers of the multi-layer coating membrane is tLs, and the following condition is satisfied:

65≤tLs≤200.

7 . The optical lens assembly of claim 6 , wherein the multi-layer coating membrane comprises at least one of the low refractive index layers, the multi-layer coating membrane comprises at least one of the high refractive index layers, a total thickness of the low refractive index layer is LtTk, a total thickness of the high refractive index layer is HtTk, and the following condition is satisfied:

1.0≤LtTk/HtTk≤1.5.

8 . The optical lens assembly of claim 1 , wherein the optical element comprising the multi-layer coating membrane is an optical lens element, and the optical lens element is made of a plastic material and has aspherical surfaces.

9 . The optical lens assembly of claim 8 , wherein each of an object-side surface and an image-side surface of the at least one optical element comprises the multi-layer coating membrane, a total thickness of the multi-layer coating membrane on the object-side surface of the optical element is otTk, a total thickness of the multi-layer coating membrane on the image-side surface of the optical element is itTk, and the following condition is satisfied:

0.1≤otTk/itTk≤10.

10 . The optical lens assembly of claim 9 , wherein the multi-layer coating membrane comprises at least one of the low refractive index layers, the multi-layer coating membrane comprises at least one of the high refractive index layers, a refractive index of the high refractive index layer is NH, a refractive index of the low refractive index layer is NL, and the following conditions are satisfied:

1.9≤NH; and

NL<1.9.

11 . The optical lens assembly of claim 1 , wherein a transmittance at a wavelength of 850 nm of the optical element comprising the multi-layer coating membrane is T85, and the following condition is satisfied:

70%≤T85.

12 . The optical lens assembly of claim 11 , wherein an average transmittance in a wavelength range of 830 nm-870 nm of the optical element comprising the multi-layer coating membrane is T8387, and the following condition is satisfied:

70%≤T8387.

13 . The optical lens assembly of claim 1 , wherein the slope from the center position to the position of the maximum effective diameter of the optical lens element is SPsd, and the following condition is satisfied:

7.6≤|SPsd|.

14 . The optical lens assembly of claim 13 , wherein a slope from the center position to a position of a maximum horizontal displacement of the optical lens element is SPmax, and the following condition is satisfied:

7.5≤|SPmax|.

15 . The optical lens assembly of claim 14 , wherein when the position of the maximum effective diameter and the position of the maximum horizontal displacement of the optical lens element are different, a slope from the position of the maximum horizontal displacement to the position of the maximum effective diameter of the optical lens element is SPbi, and the following condition is satisfied:

7.5≤|SPbi|.

16 . An imaging apparatus, comprising:

the optical lens assembly of claim 1 ; and

an image sensor disposed on an image surface of the optical lens assembly.

17 . An electronic device, comprising:

the imaging apparatus of claim 16 .