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US 2026/0299166 A1Published application
Optical lens assembly, imaging apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorsWen-Yu TSAI, Hsiang-Chi TANG, Yu Jie HONG, Chun-Hung TENG
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Abstract
An optical lens assembly includes at least one optical element. At least one of the at least one optical element includes 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. The multi-layer coating membrane is a dual-bandpass filtering membrane.
Claims16
An optical lens assembly, comprising:
- at least one optical element, wherein at least one of the at least one optical element is an optical lens element, and the optical lens element is made of a plastic material and has aspherical surfaces;
- wherein the optical lens 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 an average transmittance in a wavelength range of 350 nm-400 nm of the optical element comprising the multi-layer coating membrane is T3540, 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 total number of layers of the multi-layer coating membrane is tLs, and the following conditions are satisfied:
- T
-
- 3540
- ≤
- 10
-
- %
- ;
- 70
-
- %
- ≤
- T
-
- 4563
- ;
- T
-
- 7076
- ≤
- 3
-
- %
- ;
- and
- 65
- ≤
- tLs
- ≤
- 200.
31 more elements
An optical lens assembly, comprising:
- at least one optical element, wherein at least one of the at least one optical element is an optical lens element, and the optical lens element is made of a plastic material and has aspherical surfaces;
- wherein the optical lens 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 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-1050 nm of the optical element comprising the multi-layer coating membrane is T70105, and the following conditions are satisfied:
- ❘
- "\[LeftBracketingBar]"
- dWt
-
- 50
-
- v
- ❘
- "\[RightBracketingBar]"
- ≤
- 20
-
- nm
- ;
- 70
-
- %
- ≤
- T
-
- 4563
- ;
- and
- T
-
- 70105
- ≤
- 10
-
- %
- .
31 more elements
Dependencies are inferred from the claim text.