TW202225733A - Optical lens assembly, imaging apparatus and electronic device - Google Patents

Abstract

According to the present disclosure, an optical lens assembly includes, from an object side to an image side, at least four optical lenses. At least one optical lens of the at least four optical lenses includes an anti-reflective coating. The optical lens having the anti-reflective coating is made of a plastic material. The anti-reflective coating is disposed on an object-side surface or an image-side surface of the optical lens. The anti-reflective coating includes at least one coating layer. The coating layer at the outermost of the anti-reflective coating is made of ceramics. The anti-reflective coating includes a plurality of holes. The sizes of the holes adjacent to the outermost of the anti-reflective coating are larger than the sizes of the holes adjacent to the innermost of the anti-reflective coating. Therefore, the best anti-reflective effect of the optical lens assembly with multiple optical lenses can be obtained, and the imaging quality of the optical lens assembly can be significantly enhanced.

Description

Optical lens, imaging device and electronic device

The present disclosure relates to an optical lens and an imaging device, and more particularly, to an anti-reflection optical lens and an imaging device.

Conventional coating techniques (PVD and general CVD) can only produce usable anti-reflection coatings on flat surfaces. In high-end mobile devices, the requirements for high-quality lenses have been greatly increased, and the number of lenses in high-end optical lenses has increased significantly. Due to the intensified design difficulty of the optical system and the increase in the number of lenses, the aberrations in large off-axis fields of view need to be strengthened and corrected. This leads to a large change in the surface shape of the optical lens close to the imaging surface, which becomes a bottleneck that cannot be overcome by the conventional coating technology. Therefore, it is a trend to develop high-uniformity coating technology on high-level multi-lens optical systems and optical lenses with sharp surface changes.

The present disclosure is to develop an optical lens of a multi-optical lens, which applies the atomic layer deposition (ALD, Atomic Layer Deposit) technology and is designed with specific multiple anti-reflection coating factors to obtain an excellent coating configuration. With the characteristics of the sub-wavelength microstructure on the surface of the anti-reflection coating, the high-quality optical lens with multi-optical lens can obtain the best anti-reflection effect, so as to solve the serious reflection of large-angle strong light caused by the optical lens with severe surface changes. The problem is that the optical lens with the bending change can achieve a uniform anti-reflection coating (AR Coating) production effect in the full field of view. Thereby, when the optical lens combination is applied to the optical lens of the multi-optical lens, the imaging quality of the high-end optical lens can be significantly improved.

An optical lens provided according to the present disclosure includes at least four optical lenses from the object side to the image side. At least one of the at least four optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating It includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflective coating is larger than the size of the innermost hole adjacent to the anti-reflective coating . The total thickness of the anti-reflection coating at the center of the optical lens is Tc, and the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp. The main factor of the anti-reflection coating configuration of the optical lens is FAR, which satisfies the following conditions: |Tc- Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

An imaging device provided according to the present disclosure includes an optical lens, a diffractive element and an electronic photosensitive element. The optical lens includes at least four optical lenses from the object side to the image side, at least one optical lens in the at least four optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, and the anti-reflection coating is located in the The object side surface or the image side surface of the optical lens, the anti-reflection coating includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the outermost layer of the anti-reflection coating is adjacent to the anti-reflection coating. The size of the hole is larger than the size of the innermost hole adjacent to the anti-reflection coating. The total thickness of the anti-reflection coating at the center of the optical lens is Tc, and the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp. The main factor of the anti-reflection coating configuration of the optical lens is FAR, which satisfies the following conditions: |Tc- Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR. At least one surface of the diffractive element includes an anti-reflection coating, the material of the anti-reflection coating of the diffractive element is aluminum oxide, and the electronic photosensitive element is arranged on an imaging surface of the optical lens.

An imaging device provided according to the present disclosure includes an optical lens, a curved element and an electronic photosensitive element. The optical lens includes at least four optical lenses from the object side to the image side, at least one optical lens in the at least four optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, and the anti-reflection coating is located in the The object side surface or the image side surface of the optical lens, the anti-reflection coating includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the outermost layer of the anti-reflection coating is adjacent to the anti-reflection coating. The size of the hole is larger than the size of the innermost hole adjacent to the anti-reflection coating. The total thickness of the anti-reflection coating at the center of the optical lens is Tc, and the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp. The main factor of the anti-reflection coating configuration of the optical lens is FAR, which satisfies the following conditions: |Tc- Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR. At least one surface of the curved element includes a phase subwavelength structure, and the electronic photosensitive element is arranged on an imaging surface of the optical lens.

An electronic device is provided according to the present disclosure, which is a mobile device, and the electronic device includes the imaging device described in the preceding paragraph.

When |Tc-Tp|/Tc satisfies the above conditions, the optical lens with changing bending can achieve a uniform anti-reflection coating production effect.

When the FAR satisfies the above conditions, an excellent coating configuration can be obtained.

An optical lens provided according to the present disclosure includes at least one optical lens and at least one anti-reflection element from the object side to the image side. At least one surface of the at least one anti-reflection element includes an anti-reflection coating, the anti-reflection element including the anti-reflection coating is made of a glass material, and the anti-reflection coating includes at least two layers, and a base closest to the anti-reflection element One of the film layers of the material is a first film layer, and the refractive index of the first film layer is smaller than the refractive index of the base material. The main material of the outermost layer of the anti-reflection coating is aluminum oxide. The anti-reflection coating contains a plurality of holes. The size of the outermost hole adjacent to the anti-reflection coating is larger than that of the innermost hole adjacent to the anti-reflection coating, and the outermost hole is larger than the outermost hole of the anti-reflection coating. The film layer has a graded index of refraction. The total film thickness of the anti-reflection coating is tTk, which satisfies the following conditions: 200 nm < tTk ≤ 400 nm.

When tTk satisfies the above conditions, the optimal low reflection effect can be effectively maintained.

The present disclosure provides an optical lens including at least four optical lenses from the object side to the image side. At least one of the at least four optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating It includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflective coating is larger than the size of the innermost hole adjacent to the anti-reflective coating . The total thickness of the anti-reflection coating at the center of the optical lens is Tc, and the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp. The main factor of the anti-reflection coating configuration of the optical lens is FAR, which satisfies the following conditions: |Tc- Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The present disclosure is to develop an optical lens of a multi-optical lens, which applies atomic layer deposition coating technology and is designed with specific multiple anti-reflection coating factors to obtain an excellent coating configuration. With the characteristics of the sub-wavelength structure on the surface of the anti-reflection coating, the high-quality optical lens with multi-optical lens can obtain the best anti-reflection effect, so as to solve the serious reflection problem of large-angle strong light caused by the optical lens with dramatic surface changes. , so that the optical lens with bending change can achieve a uniform anti-reflection coating production effect in the full field of view. Thereby, when the optical lens combination is applied to the optical lens of the multi-optical lens, the imaging quality of the high-end optical lens can be significantly improved.

The total thickness of the anti-reflection coating at the center of the optical lens is Tc, and the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, which can satisfy the following conditions: |Tc-Tp|/Tc ≤ 10.00%; |Tc- Tp|/Tc ≤ 3.00%; |Tc-Tp|/Tc ≤ 1.50%; or 0% < |Tc-Tp|/Tc ≤ 0.50%.

The first factor of the anti-reflection coating configuration of the optical lens is Far1, the second factor of the anti-reflection coating configuration of the optical lens is Far2, the third factor of the anti-reflection coating configuration of the optical lens is Far3, and the main factor of the anti-reflection coating configuration of the optical lens is FAR , FAR = LOG(Far1×Far2×Far3), which can satisfy the following conditions: -1.0 ≤ FAR; -0.75 ≤ FAR; -0.50 ≤ FAR; -0.30 ≤ FAR ≤ 1; or 0.1 ≤ FAR ≤ 10.

The present disclosure is to develop an optical lens of a multi-optical lens, which can be designed with specific multiple anti-reflection coating factors by applying atomic layer deposition coating technology to obtain an excellent coating configuration. With the characteristics of the sub-wavelength structure on the surface of the anti-reflection coating, the high-quality optical lens with multi-optical lens can obtain the best anti-reflection effect, so as to solve the serious reflection problem of large-angle strong light caused by the optical lens with dramatic surface changes. , so that the optical lens with bending change can achieve a uniform anti-reflection coating production effect in the full field of view. Thereby, when the optical lens combination is applied to the optical lens of the multi-optical lens, the imaging quality of the high-end optical lens can be significantly improved.

The optical lens can be a substrate, the thickness of the substrate on the optical axis is CTs, the maximum horizontal displacement between the surface of the optical lens and the intersection of the optical axis is SAGmax, and the first factor of the anti-reflection coating configuration of the optical lens is Far1, Far1 = |SAGmax|/CTs, which can satisfy the following conditions: 0.500 ≤ Far1, by controlling the change relationship factor between the thickness of the optical lens and the off-axis horizontal displacement in the optical lens, the optimal coating configuration in the optical lens can be effectively obtained. Furthermore, the following conditions may be satisfied: 1.000 ≤ Far1; 1.500 ≤ Far1; 1.700 ≤ Far1; or 2.000 ≤ Far1.

The average value of the tangent slope of the optical lens surface within the optical effective diameter range is SPavg, the minimum value of the tangent slope of the optical lens surface within the optical effective diameter range is SPmin, and the second factor of the anti-reflection coating configuration of the optical lens is Far2, Far2 = 1/(|SPavg|×|SPmin|), which can satisfy the following conditions: 0.100 ≤ Far2, by controlling the off-axis surface variation factor of the optical lens in the optical lens, the optimal coating configuration in the optical lens can be effectively obtained, and Improve the application value of anti-reflection coatings. Furthermore, the following conditions may be satisfied: 0.200 ≤ Far2; 0.300 ≤ Far2; 0.400 ≤ Far2; or 0.500 ≤ Far2.

The refractive index of the substrate is Ns, the third factor of the anti-reflection coating configuration of the optical lens is Far3, Far3 = (1/(Ns-1)) ² , which can satisfy the following conditions: 2.5 ≤ Far3, by controlling the refraction of the optical lens The difference factor between the rate and the air refractive index makes the anti-reflection coating be arranged on the most appropriate optical lens surface in the optical lens, so that the light can pass through the anti-reflection coating layer from the air end in a way of changing the gradient index of refraction. Into the optical lens, in order to play the best anti-reflection effect to achieve the desired anti-reflection effect. Furthermore, the following conditions may be met: 2.9 ≤ Far3; 3.0 ≤ Far3; 3.1 ≤ Far3; 3.3 ≤ Far3; or 3.5 ≤ Far3.

The refractive index of the substrate is Ns, which can meet the following conditions: Ns ≤ 1.7682. By applying coating technology on a low refractive index material that is closer to the refractive index of air, the anti-reflection effect of the anti-reflection coating is effectively enhanced, and the reflection is reduced. rate effect. Furthermore, the following conditions may be satisfied: Ns ≤ 1.700; or Ns ≤ 1.600.

The material of the outermost layer of the anti-reflection coating can be aluminum oxide (Al ₂ O ₃ ). Through the appropriate configuration of the optical lens material and the anti-reflection coating material of the contact optical lens, better coating adhesion and The protection of the optical lens surface prevents the anti-reflection coating from falling off due to insufficient adsorption, and avoids the surface defects of the optical lens caused by the coating production process, which helps to improve the pass rate of the optical lens in the environmental weather resistance test.

The anti-reflection coating can include at least three layers, and the materials of the layers can be different. By having a scratch-resistant and wear-resistant protective layer or a protective layer to protect the optical lens, damage to the anti-reflection coating and chemical corrosion can be avoided.

The reflectivity valley point at the center of the optical lens has a relatively low reflectivity wavelength in a range (±25 nm), and the reflectivity valley point at the periphery of the optical lens has a relatively low reflectivity within a range (±25 nm). The wavelength of low reflectivity is Wtp, which can satisfy the following conditions: 0 nm ≤ |Wtc-Wtp| ≤ 25 nm, by controlling the reflectivity offset within a specific wavelength range at the reflectivity valley point, the optical Consistent anti-reflection effect within the effective diameter of the lens. Furthermore, the following conditions may be satisfied: 0 nm < |Wtc-Wtp| ≤ 15 nm; or 1 nm ≤ |Wtc-Wtp| ≤ 10 nm.

The reflectivity valley at the center of the optical lens has a relatively low reflectivity Rtc within a range (±25 nm), which can satisfy the following conditions: 0% < Rtc ≤ 0.300%, by reducing the reflection at the center of the optical lens The reflectivity at the valley point helps to improve the best anti-reflection effect of the anti-reflection coating in a specific wavelength range. Furthermore, the following conditions may be satisfied: Rtc ≤ 0.200%; or Rtc ≤ 0.100%.

The reflectivity valley at the periphery of the optical lens has a relatively low reflectivity Rtp in a range (±25 nm), which can satisfy the following conditions: 0% < Rtp ≤ 0.300%, by reducing the reflection at the periphery of the optical lens The reflectivity at the valley point helps to improve the best anti-reflection effect of the anti-reflection coating in a specific wavelength range. Furthermore, the following conditions may be satisfied: Rtp ≤ 0.200%; or Rtp ≤ 0.100%.

The reflectance peak point at the center of the optical lens has a relatively high reflectivity wavelength in a range (±25 nm), and the reflectance peak point at the periphery of the optical lens has a relatively high reflectivity within a range (±25 nm). The wavelength of high reflectivity is Wcp, which can satisfy the following conditions: 0 nm ≤ |Wcc-Wcp| ≤ 20 nm, by controlling the reflectivity offset within a specific wavelength range at the reflectivity peak point, the optical Consistent anti-reflection effect within the effective diameter of the lens. Furthermore, the following conditions may be satisfied: 0 nm ≤ | Wcc-Wcp | ≤ 25 nm; 0 nm < | Wcc-Wcp | ≤ 15 nm; or 1 nm ≤ | Wcc-Wcp | ≤ 10 nm.

The reflectance peak point at the center of the optical lens has a relatively high reflectance Rcc within a range (±25 nm), which can satisfy the following conditions: 0.200% ≤ Rcc ≤ 0.700%, by reducing the reflection at the center of the optical lens The reflectivity at the peak point helps to improve the best anti-reflection effect of the anti-reflection coating in a specific wavelength range. Furthermore, the following conditions may be satisfied: 0.300% ≤ Rcc ≤ 0.600%; or 0.400% ≤ Rcc ≤ 0.500%.

The reflectance peak point at the periphery of the optic has a relatively high reflectivity Rcp in a range (±25 nm), which can satisfy the following conditions: 0.200% ≤ Rcp ≤ 0.700%, by reducing the reflection at the periphery of the optic The reflectivity at the peak point helps to improve the best anti-reflection effect of the anti-reflection coating in a specific wavelength range. Furthermore, the following conditions may be satisfied: 0.300% ≤ Rcp ≤ 0.600%; or 0.400% ≤ Rcp ≤ 0.500%.

At least one surface of an optical lens containing an anti-reflection coating may contain at least one inflection point. The design of the inflection point on the surface of the optical lens helps to exert the cost-effectiveness of atomic layer deposition coating, which can be used in situations where the surface shape changes drastically. The surface of the optical lens achieves a uniform coating effect, avoiding the defect that the reflectivity is shifted due to the difference in the film thickness of the anti-reflection coating, which leads to the defect that the reflected light around the optical lens is too strong.

The total number of layers of the anti-reflection coating is tLs, which can meet the following conditions: 1 ≤ tLs ≤ 8. By controlling the number of layers of the anti-reflection coating, the production efficiency and cost are effectively improved.

The total film thickness of the anti-reflection coating is tTk, which can meet the following conditions: 200 nm < tTk ≤ 400 nm, by controlling the total thickness of the anti-reflection coating, the best low reflection effect can be effectively maintained. Furthermore, the following conditions may be satisfied: 150 nm ≤ tTk ≤ 800 nm; 200 nm ≤ tTk ≤ 600 nm; 230 nm ≤ tTk ≤ 500 nm; or 240 nm ≤ tTk ≤ 400 nm.

The full viewing angle of the optical lens is FOV, which can meet the following conditions: 60 degrees ≤ FOV ≤ 220 degrees; or 70 degrees ≤ FOV ≤ 100 degrees, so that the anti-reflection coating can be applied to the optical lens according to the needs of different scenarios, so as to meet the requirements of different scenarios. achieve the desired anti-reflection effect.

The total thickness of the anti-reflection coating at the center of the optical lens is Tc, which can satisfy the following conditions: 150 nm ≤ Tc ≤ 800 nm; 200 nm ≤ Tc ≤ 600 nm; 230 nm ≤ Tc ≤ 500 nm; or 240 nm ≤ Tc ≤ 400 nm.

The total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, which can satisfy the following conditions: 150 nm ≤ Tp ≤ 800 nm; 200 nm ≤ Tp ≤ 600 nm; 230 nm ≤ Tp ≤ 500 nm; or 240 nm ≤ Tp ≤ 400 nm.

The present disclosure further provides an optical lens including at least one optical lens and at least one anti-reflection element from the object side to the image side. At least one surface of the at least one anti-reflection element includes an anti-reflection coating, the anti-reflection element including the anti-reflection coating is made of a glass material, and the anti-reflection coating includes at least two layers, and a base closest to the anti-reflection element One of the film layers of the material is a first film layer, and the refractive index of the first film layer is smaller than the refractive index of the base material. The main material of the outermost layer of the anti-reflection coating is aluminum oxide. The anti-reflection coating contains a plurality of holes. The size of the outermost hole adjacent to the anti-reflection coating is larger than that of the innermost hole adjacent to the anti-reflection coating, and the outermost hole is larger than the outermost hole of the anti-reflection coating. The film layer has a graded index of refraction. The total film thickness of the anti-reflection coating is tTk, which satisfies the following conditions: 200 nm < tTk ≤ 400 nm.

The present disclosure is to develop optical lenses that can apply coating techniques and be designed with specific anti-reflection coating factors. With the characteristics of the sub-wavelength structure on the surface of the anti-reflection coating, the optical lens with anti-reflection elements can obtain the best anti-reflection effect, solve the problem of serious reflection of large-angle strong light, and achieve a uniform anti-reflection coating production effect.

The substrate can be a flat element, and the thickness of the substrate on the optical axis is CTs, which can satisfy the following conditions: 0.15 mm < CTs ≤ 0.60 mm, and the yield of finished products can be improved by controlling appropriate substrate properties. Furthermore, the following conditions may be met: 0.15 mm ≤ CTs ≤ 2.00 mm; CTs ≤ 1.50 mm; CTs ≤ 1.00 mm; CTs ≤ 0.60 mm; CTs ≤ 0.45 mm; or CTs ≤ 0.35 mm.

The third factor of the anti-reflection coating configuration of the optical lens is Far3, which can meet the following conditions: 1.0 ≤ Far3 ≤ 5.0, by controlling the difference factor between the refractive index of the substrate and the refractive index of the air, the light can pass from the air end to a graded refractive index to achieve the desired anti-reflection effect with the best anti-reflection effect. Furthermore, the following conditions may be satisfied: 1.4 ≤ Far3 ≤ 4.0; or 1.6 ≤ Far3 ≤ 3.6.

The average reflectance of the substrate at wavelengths of 400 nm - 630 nm is R4063, which can meet the following conditions: 0% ≤ R4063 ≤ 1.3%, and the desired anti-reflection effect can be achieved by controlling the reflectance performance. Furthermore, the following conditions may be met: R4063 ≤ 1.0%; R4063 ≤ 0.7%; or R4063 ≤ 0.5%.

The average reflectance of the substrate at wavelengths of 670 nm - 1000 nm is R67100, which can meet the following conditions: 0% ≤ R67100 ≤ 3.0%, and the desired anti-reflection effect can be achieved by controlling the reflectance performance. Furthermore, the following conditions may be satisfied: R67100 ≤ 2.5%; R67100 ≤ 2.0%; or R67100 ≤ 1.5%.

The average transmittance of the substrate at a wavelength of 400 nm - 600 nm is T4060, which can meet the following conditions: 95% ≤ T4060 ≤ 100%, and the desired light transmission effect can be achieved by controlling the transmittance performance. Furthermore, the following conditions may be met: 97% ≤ T4060; or 99% ≤ T4060.

The anti-reflection coating may have a second film layer, the refractive index of the second film layer may be greater than the refractive index of the first film layer, the refractive index of the second film layer may be greater than the refractive index of the substrate, and the outermost film layer has a refractive index. The refractive index is equivalently smaller than the refractive index of the first film layer and the substrate, thereby effectively enhancing the anti-reflection effect.

The substrate can be a microlens, thereby helping to improve petal-shaped stray light.

The refractive index of the substrate is Ns, which may satisfy the following conditions: 1.40 ≤ Ns ≤ 2.00; 1.45 ≤ Ns ≤ 1.90; 1.50 ≤ Ns ≤ 1.80; or 1.50 ≤ Ns ≤ 1.75.

The wavelength at which the substrate has minimum reflectivity in the wavelength range from 400 nm to 1000 nm is WRmin, which can satisfy the following conditions: 550 nm ≤ WRmin ≤ 600 nm; 560 nm ≤ WRmin ≤ 595 nm; or 570 nm ≤ WRmin.

The average reflectance of the substrate at wavelengths 400 nm - 600 nm is R4060, which can satisfy the following conditions: 0% ≤ R4060 ≤ 1.3%; R4060 ≤ 1.0%; R4060 ≤ 0.7%; or R4060 ≤ 0.5%.

The average reflectance of the substrate at wavelengths 400 nm - 650 nm is R4065, which can satisfy the following conditions: 0% ≤ R4065 ≤ 1.3%; R4065 ≤ 1.0%; R4065 ≤ 0.7%; or R4065 ≤ 0.5%.

The average reflectance of the substrate at wavelengths of 400 nm - 1000 nm is R40100, which can satisfy the following conditions: 0% ≤ R40100 ≤ 2.5%; R40100 ≤ 2.0%; R40100 ≤ 1.5%; or R40100 ≤ 1.0%.

The average reflectance of the substrate at wavelengths 500 nm - 600 nm is R5060, which can satisfy the following conditions: 0% ≤ R5060 ≤ 1.3%; R5060 ≤ 1.0%; R5060 ≤ 0.7%; or R5060 ≤ 0.5%.

The average reflectance of the substrate at wavelengths 600 nm - 700 nm is R6070, which can satisfy the following conditions: 0% ≤ R6070 ≤ 2.5%; R6070 ≤ 2.0%; R6070 ≤ 1.5%; or R6070 ≤ 1.0%.

The average reflectance of the substrate at wavelengths 700 nm - 1000 nm is R70100, which can satisfy the following conditions: 0% ≤ R70100 ≤ 3.0%; R70100 ≤ 2.5%; R70100 ≤ 2.0%; or R70100 ≤ 1.5%.

The average reflectance of the substrate at wavelengths 800 nm - 1000 nm is R80100, which can satisfy the following conditions: 0% ≤ R80100 ≤ 3.0%; R80100 ≤ 2.5%; R80100 ≤ 2.0%; or R80100 ≤ 1.5%.

The average reflectance of the substrate at wavelengths 900 nm - 1000 nm is R90100, which can satisfy the following conditions: 0% ≤ R90100 ≤ 3.0%; R90100 ≤ 2.5%; R90100 ≤ 2.0%; or R90100 ≤ 1.5%.

The reflectance of the substrate at a wavelength of 500 nm is R50, which can satisfy the following conditions: 0% ≤ R50 ≤ 1.3%; R50 ≤ 1.0%; R50 ≤ 0.7%; or R50 ≤ 0.5%.

The reflectance of the substrate at a wavelength of 600 nm is R60, which can satisfy the following conditions: 0% ≤ R60 ≤ 1.3%; R60 ≤ 1.0%; R60 ≤ 0.7%; or R60 ≤ 0.5%.

The reflectance of the substrate at a wavelength of 650 nm is R65, which can satisfy the following conditions: 0% ≤ R65 ≤ 1.3%; R65 ≤ 1.0%; R65 ≤ 0.7%; or R65 ≤ 0.5%.

The reflectance of the substrate at a wavelength of 700 nm is R70, which can satisfy the following conditions: 0% ≤ R70 ≤ 2.5%; R70 ≤ 2.0%; R70 ≤ 1.5%; or R70 ≤ 1.0%.

The reflectance of the substrate at a wavelength of 800 nm is R80, which can satisfy the following conditions: 0% ≤ R80 ≤ 3.0%; R80 ≤ 2.5%; R80 ≤ 2.0%; or R80 ≤ 1.5%.

The reflectance of the substrate at a wavelength of 900 nm is R90, which can satisfy the following conditions: 0% ≤ R90 ≤ 3.0%; R90 ≤ 2.5%; R90 ≤ 2.0%; or R90 ≤ 1.5%.

The reflectivity of the substrate at a wavelength of 1000 nm is R100, which can satisfy the following conditions: 0% ≤ R100 ≤ 3.0%; R100 ≤ 2.5%; R100 ≤ 2.0%; or R100 ≤ 1.5%.

The wavelength at which the substrate has the maximum transmittance in the wavelength range of 400 nm to 1000 nm is Tmax, which can satisfy the following conditions: 98% < Tmax ≤ 100%; or 99% ≤ Tmax.

The average transmittance of the substrate at wavelengths of 500 nm - 600 nm is T5060, which can meet the following conditions: 98% < T5060 ≤ 100%; or 99% ≤ T5060.

The transmittance of the substrate at a wavelength of 400 nm is T40, which can satisfy the following conditions: 85% ≤ T40 ≤ 100%; 90% ≤ T40; or 92% ≤ T40.

The transmittance of the substrate at a wavelength of 500 nm is T50, which can satisfy the following conditions: 98% < T50 ≤ 100%.

The transmittance of the substrate at a wavelength of 600 nm is T60, which can satisfy the following conditions: 98% < T60 ≤ 100%.

The transmittance of the substrate at a wavelength of 700 nm is T70, which can satisfy the following conditions: T70 ≤ 0.2%; or T70 ≤ 0.15%.

For the excellent quality optical lens provided by the present disclosure, an optimal design must be made after comprehensive evaluation of parameters such as the anti-reflection coating factor, and an anti-reflection coating is formed on the surface of a specific plastic optical lens, so that the anti-reflection coating has excellent uniformity, High environmental weather resistance, best anti-reflection effect and good image quality.

The optical lens preferably has anti-reflection coatings on both sides, but it is also possible to have anti-reflection coatings on only one suitable surface. By applying the technology of the present disclosure to the surface of the optical lens with drastic changes in surface shape, the anti-reflection coating produced by the atomic layer deposition method can have the optimal value, strike a balance between cost and quality, and have the most appropriate refractive index. Anti-reflection coating is made on the high-efficiency optical lens to achieve the best anti-reflection effect.

The reflectance of the present disclosure is measured with a single optical lens or a substrate, and the reflectance is all based on the data at an incident angle of 0 degrees as a comparison benchmark.

The surface hole-making process can effectively improve the distribution of holes on the surface of the optical lens, increase the gap between the holes on the surface of the optical lens, present a sponge-like structure, or change the density of the pores. The pore-forming effect can also change with the depth of the anti-reflection coating. For example, the outer side of the anti-reflection coating in contact with the air has a larger pore structure, while the inner side has a relatively small pore structure. It is obvious that the holes/notches distributed on the outer side are relatively larger than The inner pores can also be explained as the distribution density of the irregular branched structures on the outside under the same plane is sparse, and the distribution density of the irregular branched structures on the inner side under the same plane is denser. The pores are composed of irregular nanofiber structures (Nanofiber). ), which has the effect of allowing air to be retained or connected between the pores, so that the outermost film layer has a gradient refractive index. The outer side and inner side of the anti-reflection coating means that in the cross-sectional view and the schematic diagram, the outer side is the side contacting the air, and the inner side is the side closer to the optical lens or the substrate. The surface hole-making process can be performed by plasma etching, chemical reaction etching, time-controlled crystal particle size, or high-temperature solution treatment, such as immersion in alcohol or water with a temperature above 50 degrees.

The material of the outermost layer of the anti-reflection coating of the present disclosure may be metal oxide, metal nitride, metal fluoride, non-metal oxide, non-metal nitride, non-metal fluoride, or ceramic, etc., wherein ceramic, etc. The main components are oxides, nitrides, borides and carbides, such as alumina. When the outermost layer of the anti-reflection coating is made of SiO ₂ , Nb ₂ O ₅ , Pa ₂ O ₅ , and MgF ₂ , it can be fabricated by physical vapor deposition (PVD), dry etching with argon (Ar) ions, or phosphoric acid solution. Wet etching can also produce different types of nanofiber structures. The thickness is about 100 nm - 300 nm, and the diameter of the nanofibers is about 10 nm - 100 nm.

The high refractive index material of the anti-reflection coating has a refractive index of Nh at a wavelength of 587.6 nm, and the low refractive index material of the anti-reflection coating has a refractive index of Nl at a wavelength of 587.6 nm. The refractive index of the high-refractive-index material of the anti-reflection coating can be greater than 2.0, and the refractive index of the low-refractive-index material of the anti-reflection coating can be less than 1.8. For example, the anti-reflection coating material (refractive index at a wavelength of 587.6 nm) can be are: MgF ₂ (1.3777), SiO ₂ (1.4585), Al ₂ O ₃ (1.7682), HfO ₂ (1.8935), ZnO (1.9269), Sc ₂ O ₃ (1.9872), AlN (2.0294), Si ₃ N ₄ (2.0381), Ta ₂ O ₅ (2.1306), ZrO ₂ (2.1588), ZnS (2.2719), Nb ₂ O ₅ (2.3403), TiO ₂ (2.6142) or TiN (3.1307).

The first layer coating material close to the surface of the plastic optical lens can be TiO ₂ , AlN, Al ₂ O ₃ , aluminum hydroxide (Al(OH) ₃ ) or a mixture containing aluminum, which can strengthen the adhesion between the anti-reflection coating and the optical lens , to prevent the anti-reflection coating from falling off, to achieve the effect of protecting the surface of the optical lens, and effectively strengthen the environmental weather resistance of the optical lens.

The anti-reflection coating is based on the principle of constructive interference. Single-layer or multi-layer films can be coated on the surface of plastic optical lenses. Physical vapor deposition (PVD), such as evaporation deposition or sputtering deposition, can be used, or chemical gas can be used. Phase deposition (CVD), such as ultra-high vacuum chemical vapor deposition, microwave plasma-assisted chemical vapor deposition, plasma enhanced chemical vapor deposition or atomic layer deposition, etc.

The full field of view of the present disclosure is the range from the central field of view (0 Field) to the maximum image height field of view (1.0 Field), and the full field of view covers the optically effective area of the surface of the optical lens.

The tangent slope of the optical lens surface is calculated when the optical axis is in the horizontal direction, and the tangent slope is infinite at the near optical axis (Infinity, INF, ∞).

The optical lens can also include a diffraction element (Fresnel Lens), a flat element such as an IR-Cut Filter, a blue glass, a short-wavelength absorbing element, a long-wavelength absorbing element or a protective glass ( Cover Glass), etc., a Micro Lens (Micro Lens) arranged on the surface of the sensing element or the imaging surface, or a filter element such as a light guide element such as a mirror, Prism, Fly-Eye Integrator, etc. . At least one surface of the anti-reflection element may be provided with an anti-reflection coating, and the main material of the anti-reflection coating on the different layers may be aluminum oxide, silicon oxide, or titanium oxide.

The optical lens may further include a plane element or a curved element, the plane element or the curved element is arranged in the optical lens group or outside the optical lens group, and the surface of the plane element or the curved element may have a phase subwavelength structure (Meta Lens), the phase subwavelength The wavelength structure can include a film layer composed of metal oxides (such as TiO ₂ , Al ₂ O ₃ ), metal nitrides (such as AlN), silicon oxides (such as SiO ₂ ) or silicon nitrides (such as SiN). The surface of the optical lens in the optical lens can be configured with a graphene film layer to achieve the effect of an equivalent phase sub-wavelength structure.

Due to the thickness and high temperature of the plastic optical lens, the surface shape change error is too large. When the number of layers of the anti-reflection coating is more, the temperature will affect the surface shape accuracy more obviously. The lens correction technology can effectively solve the problem of temperature effect when the surface of plastic optical lens is coated, which helps to maintain the coating integrity of the optical lens and the high precision of the plastic optical lens, which is the key technology to achieve high-quality imaging lens.

The lens correction technology can be applied to the moldflow (Moldflow) analysis method, the curve fitting function method or the wavefront error method, etc., but not limited to this. The mold flow analysis method is to find out the three-dimensional contour nodes of the optical lens surface shrinking in the Z axis through mold flow analysis, convert it into an aspheric curve, and then compare the difference with the original curve, and consider the material shrinkage rate and surface deformation of the optical lens. The trend is calculated to obtain a correction value. The curve fitting function method is to measure the contour error of the optical lens surface, perform curve fitting with a function, and cooperate with the optimization algorithm to approximate the fitting curve to the measurement point to obtain the correction value. The function can be Exponential or Polynomial, and the algorithm can be Gauss Newton, Simplex Algorithm, or Steepest Descent Method. The wavefront error method is to measure the wavefront error (imaging error) data of the optical lens by an interferometer, comprehensively analyze the wavefront error generated by the manufacturing and assembly with the original design value of the wavefront error, and then optimize the optical software to obtain the correction value .

Another aspect of the present disclosure provides an image pickup device, which includes the aforementioned optical lens, a diffractive element, and an electron photosensitive element, at least one surface of the diffractive element includes an anti-reflection coating, and The material of the anti-reflection coating of the radiation element is aluminum oxide, and the electronic photosensitive element is arranged on an imaging surface of the optical lens. By making an anti-reflection coating of alumina material on the diffractive element, the problem of high reflection of the diffractive element at the turning point of the surface can be solved.

Another embodiment of another aspect of the present disclosure provides an imaging device, which includes the aforementioned optical lens, a curved element, and an electronic photosensitive element, at least one surface of the curved element includes a phase subwavelength structure, and The electronic photosensitive element is arranged on an imaging surface of the optical lens. By arranging the curved element with the phase subwavelength structure, the number of optical lenses can be greatly reduced, the total length of the optical lens can be effectively shortened, and the excellent miniaturization effect of the optical lens can be achieved.

Another aspect of the present disclosure provides an electronic device, which is a mobile device and includes the aforementioned optical lens.

Based on the above description, specific embodiments are provided below for detailed description.

<First Embodiment>

The optical lens of the first embodiment includes four optical lenses, which are respectively an optical lens L1 , an optical lens L2 , an optical lens L3 and an optical lens L4 from the object side to the image side. At least one of the four optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The refractive index of the optical lens L1 material is Ns, which satisfies the following conditions: Ns = 1.54. The third factor of the anti-reflection coating configuration of the optical lens L1 is Far3, which satisfies the following conditions: Far3 = 3.38.

The object-side surface of the optical lens L1 is R1, and the main factor of the anti-reflection coating configuration on the object-side surface R1 of the optical lens L1 is FAR, which satisfies the following conditions: FAR = -0.610, the anti-reflection coating on the object-side surface R1 of the optical lens L1 The configuration of the first factor is Far1, which satisfies the following conditions: Far1 = 0.465, and the second factor of the anti-reflection coating configuration of the object-side surface R1 of the optical lens L1 is Far2, which satisfies the following conditions: Far2 = 0.156.

The image-side surface of the optical lens L1 is R2, and the main factor of the anti-reflection coating configuration on the image-side surface R2 of the optical lens L1 is FAR, which satisfies the following conditions: FAR = -2.931, the anti-reflection coating on the image-side surface R2 of the optical lens L1 The configuration of the first factor is Far1, which satisfies the following conditions: Far1 = 0.057, and the second factor of the anti-reflection coating configuration of the image-side surface R2 of the optical lens L1 is Far2, which satisfies the following conditions: Far2 = 0.006.

The refractive index of the optical lens L2 material is Ns, which satisfies the following conditions: Ns = 1.63. The third factor of the anti-reflection coating configuration of the optical lens L2 is Far3, which satisfies the following conditions: Far3 = 2.50.

The object-side surface of the optical lens L2 is R1, the main factor of the anti-reflection coating configuration on the object-side surface R1 of the optical lens L2 is FAR, which satisfies the following conditions: FAR = -4.577, the anti-reflection coating on the object-side surface R1 of the optical lens L2 The configuration of the first factor is Far1, which satisfies the following conditions: Far1 = 0.013, and the second factor of the anti-reflection coating configuration of the object-side surface R1 of the optical lens L2 is Far2, which satisfies the following conditions: Far2 = 0.001.

The image-side surface of the optical lens L2 is R2, and the main factor of the anti-reflection coating configuration on the image-side surface R2 of the optical lens L2 is FAR, which satisfies the following conditions: FAR = -1.052, the anti-reflection coating on the image-side surface R2 of the optical lens L2 The configuration of the first factor is Far1, which satisfies the following conditions: Far1 = 0.413, and the second factor of the anti-reflection coating configuration of the image-side surface R2 of the optical lens L2 is Far2, which satisfies the following conditions: Far2 = 0.086.

The refractive index of the optical lens L3 material is Ns, which satisfies the following conditions: Ns = 1.54. The third factor of the anti-reflection coating configuration of the optical lens L3 is Far3, which satisfies the following conditions: Far3 = 3.38.

The object-side surface of the optical lens L3 is R1, and the main factor of the anti-reflection coating configuration on the object-side surface R1 of the optical lens L3 is FAR, which satisfies the following conditions: FAR = -0.097, the anti-reflection coating on the object-side surface R1 of the optical lens L3 The first factor is configured to be Far1, which satisfies the following conditions: Far1 = 0.547, and the second factor of the anti-reflection coating configuration of the object-side surface R1 of the optical lens L3 is Far2, which meets the following conditions: Far2 = 0.433.

The image-side surface of the optical lens L3 is R2, and the main factor of the anti-reflection coating configuration on the image-side surface R2 of the optical lens L3 is FAR, which meets the following conditions: FAR = 0.447, and the anti-reflection coating configuration on the image-side surface R2 of the optical lens L3 The first factor is Far1, which satisfies the following conditions: Far1 = 1.076, and the second factor is Far2 for the configuration of the anti-reflection coating on the image-side surface R2 of the optical lens L3, which satisfies the following conditions: Far2 = 0.770.

The refractive index of the optical lens L4 material is Ns, which satisfies the following conditions: Ns = 1.53. The third factor of the anti-reflection coating configuration of the optical lens L4 is Far3, which satisfies the following conditions: Far3 = 3.56.

The object-side surface of the optical lens L4 is R1, and the main factor of the anti-reflection coating configuration on the object-side surface R1 of the optical lens L4 is FAR, which satisfies the following conditions: FAR = -0.460, the anti-reflection coating on the object-side surface R1 of the optical lens L4 The configuration of the first factor is Far1, which satisfies the following conditions: Far1 = 0.986, and the second factor of the anti-reflection coating configuration of the object-side surface R1 of the optical lens L4 is Far2, which satisfies the following conditions: Far2 = 0.099.

The image-side surface of the optical lens L4 is R2, and the main factor of the anti-reflection coating configuration of the image-side surface R2 of the optical lens L4 is FAR, which meets the following conditions: FAR = 0.363, the anti-reflection coating configuration of the image-side surface R2 of the optical lens L4 The first factor is Far1, which satisfies the following conditions: Far1 = 1.125, and the second factor is Far2 for the anti-reflection coating configuration of the image-side surface R2 of the optical lens L4, which satisfies the following conditions: Far2 = 0.575.

Please also refer to FIG. 1. FIG. 1 is a graph showing the relationship between the reflectivity and the wavelength of the optical lens according to the first embodiment. In addition, the detailed parameters of each optical lens included in the optical lens of the first embodiment are listed in Table 1 below. Table 1. Optical lens of the first embodiment FOV (degrees) 66.97 L1 L2 L3 L4 CTs 0.61 0.30 0.80 0.40 Ns (at wavelength 587.6 nm) 1.54 1.63 1.54 1.53 Far3= (1/(Ns-1)) ² 3.38 2.50 3.38 3.56 R1 |SAGmax| 0.28 0.00 0.44 0.39 Far1= |SAGmax|/CTs 0.465 0.013 0.547 0.986 |SPmin| 1.95 15.87 1.02 2.15 |SPavg| 3.28 76.92 2.27 4.72 Far2= 1/(|SPavg|×|SPmin|) 0.156 0.001 0.433 0.099 FAR= LOG(Far1×Far2×Far3) -0.610 -4.577 -0.097 -0.460 R2 |SAGmax| 0.03 0.12 0.86 0.45 Far1= |SAGmax|/CTs 0.057 0.413 1.076 1.125 |SPmin| 7.35 1.98 0.86 0.56 |SPavg| 22.22 5.88 1.50 3.12 Far2= 1/(|SPavg|×|SPmin|) 0.006 0.086 0.770 0.575 FAR= LOG(Far1×Far2×Far3) -2.931 -1.052 0.447 0.363

Wherein, the thickness of each substrate on the optical axis is CTs, the maximum value of the horizontal displacement between the intersection of each optical lens surface and the optical axis is SAGmax, and the average value of the tangent slope of each optical lens surface within the optical effective diameter range is SPavg , the minimum value of the tangent slope of each optical lens surface within the optical effective diameter range is SPmin.

<Second Embodiment>

The optical lens of the second embodiment includes five optical lenses, which are respectively an optical lens L1 , an optical lens L2 , an optical lens L3 , an optical lens L4 and an optical lens L5 from the object side to the image side. At least one optical lens in the five optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

Please also refer to FIG. 2. FIG. 2 is a graph showing the relationship between the reflectivity and the wavelength of the optical lens according to the second embodiment. In addition, the detailed parameters of the optical lenses included in the optical lens of the second embodiment are listed in Table 2 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 2. Optical lens of the second embodiment FOV (degrees) 72.37 L1 L2 L3 L4 L5 CTs 0.50 0.24 0.39 0.38 1.23 Ns (at wavelength 587.6 nm) 1.54 1.64 1.54 1.64 1.54 Far3= (1/(Ns-1)) ² 3.38 2.44 3.38 2.44 3.38 R1 |SAGmax| 0.31 0.07 0.11 0.50 0.09 Far1= |SAGmax|/CTs 0.621 0.297 0.273 1.323 0.069 |SPmin| 1.47 10.00 1.96 1.79 5.56 |SPavg| 3.02 13.33 9.43 2.67 12.82 Far2= 1/(|SPavg|×|SPmin|) 0.225 0.008 0.054 0.210 0.014 FAR= LOG(Far1×Far2×Far3) -0.326 -2.265 -1.303 -0.168 -2.482 R2 |SAGmax| 0.02 0.26 0.28 0.53 0.17 Far1= |SAGmax|/CTs 0.044 1.090 0.724 1.395 0.142 |SPmin| 8.33 1.37 1.82 1.75 2.50 |SPavg| 33.33 3.64 4.10 2.93 6.17 Far2= 1/(|SPavg|×|SPmin|) 0.004 0.201 0.134 0.194 0.065 FAR= LOG(Far1×Far2×Far3) -3.268 -0.272 -0.484 -0.179 -1.507

<Third Embodiment>

The optical lens of the third embodiment includes five optical lenses, which are respectively an optical lens L1 , an optical lens L2 , an optical lens L3 , an optical lens L4 and an optical lens L5 from the object side to the image side. At least one optical lens in the five optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

Please also refer to FIG. 3. FIG. 3 is a graph showing the relationship between the reflectivity and the wavelength of the optical lens according to the third embodiment. In addition, the detailed parameters of the optical lenses included in the optical lens of the third embodiment are listed in Table 3 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 3. Optical lens of the third embodiment FOV (degrees) 74.74 L1 L2 L3 L4 L5 CTs 0.63 0.25 0.26 0.64 0.32 Ns (at wavelength 587.6 nm) 1.54 1.64 1.64 1.54 1.54 Far3= (1/(Ns-1)) ² 3.38 2.45 2.45 3.38 3.38 R1 |SAGmax| 0.34 0.01 0.10 0.15 0.62 Far1= |SAGmax|/CTs 0.535 0.058 0.370 0.228 1.911 |SPmin| 1.27 8.33 3.50 5.03 1.75 |SPavg| 2.67 43.48 9.09 9.26 3.32 Far2= 1/(|SPavg|×|SPmin|) 0.295 0.003 0.031 0.021 0.172 FAR= LOG(Far1×Far2×Far3) -0.273 -3.405 -1.545 -1.781 0.046 R2 |SAGmax| 0.01 0.18 0.09 0.49 0.41 Far1= |SAGmax|/CTs 0.010 0.730 0.327 0.765 1.272 |SPmin| 2.79 1.39 4.55 1.98 1.11 |SPavg| 29.41 4.61 11.90 3.17 3.45 Far2= 1/(|SPavg|×|SPmin|) 0.012 0.156 0.018 0.159 0.262 FAR= LOG(Far1×Far2×Far3) -3.373 -0.555 -1.830 -0.386 0.052

<Fourth Embodiment>

The optical lens of the fourth embodiment includes six optical lenses, which are an optical lens L1 , an optical lens L2 , an optical lens L3 , an optical lens L4 , an optical lens L5 and an optical lens L6 respectively from the object side to the image side. At least one optical lens in the six optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the fourth embodiment are listed in Table 4 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 4. Optical lens of the fourth embodiment FOV (degrees) 83.97 L1 L2 L3 L4 L5 CTs 0.82 0.28 0.55 0.35 0.77 Ns (at wavelength 587.6 nm) 1.54 1.69 1.54 1.59 1.54 Far3= (1/(Ns-1)) ² 3.37 2.12 3.38 2.90 3.38 R1 |SAGmax| 0.58 0.06 0.11 0.29 0.44 Far1= |SAGmax|/CTs 0.711 0.208 0.201 0.830 0.581 |SPmin| 1.21 4.65 2.34 1.35 1.81 |SPavg| 2.53 19.23 11.24 5.15 5.71 Far2= 1/(|SPavg|×|SPmin|) 0.326 0.011 0.038 0.144 0.097 FAR= LOG(Far1×Far2×Far3) -0.107 -2.306 -1.587 -0.460 -0.722 R2 |SAGmax| 0.07 0.17 0.24 0.23 0.88 Far1= |SAGmax|/CTs 0.090 0.609 0.437 0.659 1.144 |SPmin| 11.90 1.67 1.86 3.03 2.21 |SPavg| 18.52 6.17 6.54 6.94 3.45 Far2= 1/(|SPavg|×|SPmin|) 0.005 0.097 0.082 0.048 0.131 FAR= LOG(Far1×Far2×Far3) -2.861 -0.900 -0.915 -1.042 -0.294 L6 CTs 0.59 Ns (at wavelength 587.6 nm) 1.53 Far3= (1/(Ns-1)) ² 3.51 R1 |SAGmax| 1.06 Far1= |SAGmax|/CTs 1.811 |SPmin| 1.42 |SPavg| 3.24 Far2= 1/(|SPavg|×|SPmin|) 0.217 FAR= LOG(Far1×Far2×Far3) 0.140 R2 |SAGmax| 0.88 Far1= |SAGmax|/CTs 1.501 |SPmin| 1.21 |SPavg| 3.36 Far2= 1/(|SPavg|×|SPmin|) 0.247 FAR= LOG(Far1×Far2×Far3) 0.114

<Fifth Embodiment>

The optical lens of the fifth embodiment includes six optical lenses, which are an optical lens L1 , an optical lens L2 , an optical lens L3 , an optical lens L4 , an optical lens L5 and an optical lens L6 from the object side to the image side. At least one optical lens in the six optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the fifth embodiment are listed in Table 5 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 5. Optical lens of the fifth embodiment FOV (degrees) 85.45 L1 L2 L3 L4 L5 CTs 0.82 0.28 0.55 0.35 0.77 Ns (at wavelength 587.6 nm) 1.54 1.69 1.54 1.59 1.54 Far3= (1/(Ns-1)) ² 3.37 2.12 3.38 2.90 3.38 R1 |SAGmax| 0.58 0.06 0.11 0.35 0.45 Far1= |SAGmax|/CTs 0.711 0.208 0.202 0.995 0.590 |SPmin| 1.21 4.65 2.34 1.33 1.81 |SPavg| 2.53 19.23 11.24 4.67 5.85 Far2= 1/(|SPavg|×|SPmin|) 0.326 0.011 0.038 0.161 0.094 FAR= LOG(Far1×Far2×Far3) -0.107 -2.306 -1.585 -0.334 -0.725 R2 |SAGmax| 0.07 0.17 0.24 0.31 0.90 Far1= |SAGmax|/CTs 0.090 0.596 0.439 0.900 1.172 |SPmin| 11.90 1.67 1.86 1.08 2.21 |SPavg| 18.52 6.17 6.58 5.85 3.48 Far2= 1/(|SPavg|×|SPmin|) 0.005 0.097 0.082 0.158 0.130 FAR= LOG(Far1×Far2×Far3) -2.861 -0.910 -0.915 -0.384 -0.288 L6 CTs 0.59 Ns (at wavelength 587.6 nm) 1.53 Far3= (1/(Ns-1)) ² 3.51 R1 |SAGmax| 1.06 Far1= |SAGmax|/CTs 1.811 |SPmin| 1.42 |SPavg| 3.25 Far2= 1/(|SPavg|×|SPmin|) 0.216 FAR= LOG(Far1×Far2×Far3) 0.138 R2 |SAGmax| 0.88 Far1= |SAGmax|/CTs 1.503 |SPmin| 1.21 |SPavg| 3.36 Far2= 1/(|SPavg|×|SPmin|) 0.247 FAR= LOG(Far1×Far2×Far3) 0.115

<Sixth Embodiment>

The optical lens of the sixth embodiment includes seven optical lenses, from the object side to the image side, respectively, an optical lens L1, an optical lens L2, an optical lens L3, an optical lens L4, an optical lens L5, an optical lens L6 and an optical lens L7. At least one optical lens in the seven optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

Please also refer to FIG. 4. FIG. 4 is a graph showing the relationship between the reflectivity and the wavelength of the optical lens according to the sixth embodiment. In addition, the detailed parameters of the optical lenses included in the optical lens of the sixth embodiment are listed in Table 6 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 6. Optical lens of the sixth embodiment FOV (degrees) 78.95 L1 L2 L3 L4 L5 CTs 0.90 0.36 0.58 0.41 1.16 Ns (at wavelength 587.6 nm) 1.54 1.66 1.54 1.66 1.54 Far3= (1/(Ns-1)) ² 3.38 2.30 3.38 2.30 3.38 R1 |SAGmax| 0.50 0.17 0.14 0.14 0.13 Far1= |SAGmax|/CTs 0.556 0.475 0.244 0.345 0.115 |SPmin| 2.08 3.91 1.78 2.92 9.17 |SPavg| 3.77 10.31 11.36 9.17 15.87 Far2= 1/(|SPavg|×|SPmin|) 0.127 0.025 0.049 0.037 0.007 FAR= LOG(Far1×Far2×Far3) -0.621 -1.567 -1.390 -1.528 -2.573 R2 |SAGmax| 0.05 0.27 0.37 0.08 0.70 Far1= |SAGmax|/CTs 0.058 0.755 0.635 0.187 0.607 |SPmin| 5.21 2.19 1.04 4.35 1.78 |SPavg| 35.71 5.92 4.65 15.38 3.50 Far2= 1/(|SPavg|×|SPmin|) 0.005 0.077 0.206 0.015 0.161 FAR= LOG(Far1×Far2×Far3) -2.975 -0.874 -0.353 -2.192 -0.481 L6 L7 CTs 0.51 0.54 Ns (at wavelength 587.6 nm) 1.54 1.54 Far3= (1/(Ns-1)) ² 3.38 3.38 R1 |SAGmax| 0.51 0.83 Far1= |SAGmax|/CTs 1.005 1.528 |SPmin| 0.79 1.79 |SPavg| 2.59 3.70 Far2= 1/(|SPavg|×|SPmin|) 0.488 0.151 FAR= LOG(Far1×Far2×Far3) 0.220 -0.107 R2 |SAGmax| 0.42 0.60 Far1= |SAGmax|/CTs 0.814 1.107 |SPmin| 0.81 1.47 |SPavg| 2.67 3.41 Far2= 1/(|SPavg|×|SPmin|) 0.463 0.199 FAR= LOG(Far1×Far2×Far3) 0.105 -0.128

<Seventh Embodiment>

The optical lens of the seventh embodiment includes seven optical lenses, which are optical lens L1 , optical lens L2 , optical lens L3 , optical lens L4 , optical lens L5 , optical lens L6 and optical lens L7 from the object side to the image side. At least one optical lens in the seven optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

Please also refer to FIG. 5. FIG. 5 is a graph showing the relationship between the reflectivity and the wavelength of the optical lens according to the seventh embodiment. In addition, the detailed parameters of the optical lenses included in the optical lens of the seventh embodiment are listed in Table 7 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 7. Optical lens of the seventh embodiment FOV (degrees) 84.91 L1 L2 L3 L4 L5 CTs 0.71 0.23 0.66 0.30 0.57 Ns (at wavelength 587.6 nm) 1.54 1.67 1.54 1.64 1.57 Far3= (1/(Ns-1)) ² 3.37 2.23 3.38 2.45 3.12 R1 |SAGmax| 0.53 0.16 0.13 0.48 0.41 Far1= |SAGmax|/CTs 0.745 0.692 0.198 1.593 0.733 |SPmin| 1.29 3.69 1.77 1.56 1.74 |SPavg| 2.81 7.81 10.42 3.89 5.65 Far2= 1/(|SPavg|×|SPmin|) 0.276 0.035 0.054 0.164 0.102 FAR= LOG(Far1×Far2×Far3) -0.160 -1.271 -1.440 -0.193 -0.632 R2 |SAGmax| 0.09 0.26 0.46 0.34 0.61 Far1= |SAGmax|/CTs 0.128 1.114 0.687 1.130 1.080 |SPmin| 9.52 1.62 0.79 2.16 2.10 |SPavg| 15.87 4.42 3.68 6.06 4.42 Far2= 1/(|SPavg|×|SPmin|) 0.007 0.140 0.346 0.076 0.108 FAR= LOG(Far1×Far2×Far3) -2.546 -0.459 -0.095 -0.674 -0.441 L6 L7 CTs 0.60 0.53 Ns (at wavelength 587.6 nm) 1.54 1.53 Far3= (1/(Ns-1)) ² 3.37 3.50 R1 |SAGmax| 0.33 0.32 Far1= |SAGmax|/CTs 0.555 0.599 |SPmin| 2.17 3.55 |SPavg| 4.33 9.80 Far2= 1/(|SPavg|×|SPmin|) 0.106 0.029 FAR= LOG(Far1×Far2×Far3) -0.702 -1.219 R2 |SAGmax| 0.33 0.29 Far1= |SAGmax|/CTs 0.547 0.542 |SPmin| 1.30 3.51 |SPavg| 4.12 6.29 Far2= 1/(|SPavg|×|SPmin|) 0.187 0.045 FAR= LOG(Far1×Far2×Far3) -0.464 -1.066

<Eighth Embodiment>

The optical lens of the eighth embodiment includes seven optical lenses, from the object side to the image side, respectively, an optical lens L1, an optical lens L2, an optical lens L3, an optical lens L4, an optical lens L5, an optical lens L6 and an optical lens L7. At least one optical lens in the seven optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the eighth embodiment are listed in Table 8 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 8. Optical lens of the eighth embodiment FOV (degrees) 84.98 L1 L2 L3 L4 L5 CTs 0.83 0.25 0.28 0.60 0.38 Ns (at wavelength 587.6 nm) 1.54 1.69 1.67 1.54 1.57 Far3= (1/(Ns-1)) ² 3.37 2.12 2.23 3.38 3.12 R1 |SAGmax| 0.64 0.17 0.10 0.05 0.59 Far1= |SAGmax|/CTs 0.777 0.698 0.370 0.091 1.544 |SPmin| 1.15 2.16 2.49 3.52 0.75 |SPavg| 2.43 7.75 11.11 18.87 3.41 Far2= 1/(|SPavg|×|SPmin|) 0.357 0.060 0.036 0.015 0.390 FAR= LOG(Far1×Far2×Far3) -0.030 -1.054 -1.525 -2.333 0.274 R2 |SAGmax| 0.09 0.25 0.08 0.35 0.45 Far1= |SAGmax|/CTs 0.113 1.007 0.274 0.587 1.190 |SPmin| 9.35 1.44 4.50 1.82 2.08 |SPavg| 16.13 4.72 14.08 5.13 5.65 Far2= 1/(|SPavg|×|SPmin|) 0.007 0.147 0.016 0.107 0.085 FAR= LOG(Far1×Far2×Far3) -2.600 -0.502 -2.015 -0.674 -0.501 L6 L7 CTs 0.54 0.50 Ns (at wavelength 587.6 nm) 1.54 1.53 Far3= (1/(Ns-1)) ² 3.38 3.50 R1 |SAGmax| 0.51 1.10 Far1= |SAGmax|/CTs 0.949 2.205 |SPmin| 1.20 1.43 |SPavg| 3.34 3.45 Far2= 1/(|SPavg|×|SPmin|) 0.250 0.203 FAR= LOG(Far1×Far2×Far3) -0.096 0.195 R2 |SAGmax| 0.70 1.14 Far1= |SAGmax|/CTs 1.309 2.280 |SPmin| 1.45 1.33 |SPavg| 3.38 3.05 Far2= 1/(|SPavg|×|SPmin|) 0.205 0.246 FAR= LOG(Far1×Far2×Far3) -0.043 0.293

<Ninth Embodiment>

The optical lens of the ninth embodiment includes seven optical lenses, from the object side to the image side, respectively, optical lens L1, optical lens L2, optical lens L3, optical lens L4, optical lens L5, optical lens L6 and optical lens L7. At least one optical lens in the seven optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the ninth embodiment are listed in Table 9 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 9. Optical lens of the ninth embodiment FOV (degrees) 85.05 L1 L2 L3 L4 L5 CTs 0.85 0.29 0.29 0.49 0.36 Ns (at wavelength 587.6 nm) 1.54 1.69 1.69 1.54 1.59 Far3= (1/(Ns-1)) ² 3.37 2.12 2.12 3.38 2.90 R1 |SAGmax| 0.61 0.16 0.17 0.13 0.61 Far1= |SAGmax|/CTs 0.719 0.561 0.594 0.273 1.700 |SPmin| 1.33 2.78 1.95 3.88 0.73 |SPavg| 2.73 9.01 7.35 11.49 3.39 Far2= 1/(|SPavg|×|SPmin|) 0.276 0.040 0.070 0.022 0.402 FAR= LOG(Far1×Far2×Far3) -0.176 -1.322 -1.056 -1.685 0.297 R2 |SAGmax| 0.09 0.24 0.19 0.34 0.53 Far1= |SAGmax|/CTs 0.102 0.850 0.656 0.701 1.473 |SPmin| 10.64 1.46 2.21 2.54 1.71 |SPavg| 18.52 5.13 7.30 5.35 4.69 Far2= 1/(|SPavg|×|SPmin|) 0.005 0.133 0.062 0.073 0.124 FAR= LOG(Far1×Far2×Far3) -2.759 -0.618 -1.064 -0.759 -0.274 L6 L7 CTs 0.51 0.54 Ns (at wavelength 587.6 nm) 1.54 1.53 Far3= (1/(Ns-1)) ² 3.38 3.50 R1 |SAGmax| 0.84 1.40 Far1= |SAGmax|/CTs 1.642 2.581 |SPmin| 0.79 1.45 |SPavg| 2.36 3.16 Far2= 1/(|SPavg|×|SPmin|) 0.539 0.218 FAR= LOG(Far1×Far2×Far3) 0.476 0.294 R2 |SAGmax| 1.07 1.47 Far1= |SAGmax|/CTs 2.078 2.704 |SPmin| 0.67 1.11 |SPavg| 2.50 2.75 Far2= 1/(|SPavg|×|SPmin|) 0.598 0.328 FAR= LOG(Far1×Far2×Far3) 0.623 0.492

<Tenth Embodiment>

The optical lens of the tenth embodiment includes eight optical lenses, which are respectively optical lens L1, optical lens L2, optical lens L3, optical lens L4, optical lens L5, optical lens L6, optical lens L7 and optical lens from the object side to the image side. L8. At least one of the eight optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the tenth embodiment are listed in Table 10 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 10. Optical lens of the tenth embodiment FOV (degrees) 84.69 L1 L2 L3 L4 L5 CTs 0.95 0.30 0.34 0.55 0.51 Ns (at wavelength 587.6 nm) 1.54 1.69 1.69 1.54 1.54 Far3= (1/(Ns-1)) ² 3.37 2.12 2.12 3.38 3.38 R1 |SAGmax| 0.71 0.21 0.10 0.07 0.31 Far1= |SAGmax|/CTs 0.747 0.692 0.304 0.125 0.612 |SPmin| 1.32 2.40 8.00 5.75 3.00 |SPavg| 2.74 8.00 15.38 20.00 8.06 Far2= 1/(|SPavg|×|SPmin|) 0.276 0.052 0.008 0.009 0.041 FAR= LOG(Far1×Far2×Far3) -0.159 -1.116 -2.280 -2.436 -1.069 R2 |SAGmax| 0.14 0.31 0.13 0.24 0.41 Far1= |SAGmax|/CTs 0.144 1.036 0.385 0.432 0.812 |SPmin| 8.62 1.56 3.27 2.66 2.43 |SPavg| 13.51 4.81 11.63 8.85 6.94 Far2= 1/(|SPavg|×|SPmin|) 0.009 0.134 0.026 0.042 0.059 FAR= LOG(Far1×Far2×Far3) -2.380 -0.532 -1.667 -1.207 -0.788 L6 L7 L8 CTs 0.43 0.71 0.63 Ns (at wavelength 587.6 nm) 1.57 1.54 1.53 Far3= (1/(Ns-1)) ² 3.12 3.38 3.51 R1 |SAGmax| 0.82 0.69 1.35 Far1= |SAGmax|/CTs 1.917 0.971 2.149 |SPmin| 0.71 1.38 1.93 |SPavg| 2.77 3.19 3.94 Far2= 1/(|SPavg|×|SPmin|) 0.508 0.228 0.132 FAR= LOG(Far1×Far2×Far3) 0.482 -0.127 -0.003 R2 |SAGmax| 0.71 0.92 1.31 Far1= |SAGmax|/CTs 1.647 1.294 2.085 |SPmin| 1.27 1.27 1.79 |SPavg| 3.46 3.56 3.75 Far2= 1/(|SPavg|×|SPmin|) 0.228 0.221 0.149 FAR= LOG(Far1×Far2×Far3) 0.069 -0.014 0.038

<Eleventh Embodiment>

The optical lens of the eleventh embodiment includes eight optical lenses, from the object side to the image side, respectively, an optical lens L1, an optical lens L2, an optical lens L3, an optical lens L4, an optical lens L5, an optical lens L6, an optical lens L7 and an optical lens. Lens L8. At least one of the eight optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the eleventh embodiment are listed in Table 11 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 11. Optical lens of the eleventh embodiment FOV (degrees) 85.11 L1 L2 L3 L4 L5 CTs 1.15 0.33 0.34 0.61 0.39 Ns (at wavelength 587.6 nm) 1.54 1.69 1.69 1.54 1.67 Far3= (1/(Ns-1)) ² 3.37 2.12 2.12 3.38 2.23 R1 |SAGmax| 0.97 0.24 0.09 0.14 0.36 Far1= |SAGmax|/CTs 0.840 0.741 0.271 0.230 0.906 |SPmin| 1.01 2.06 6.02 4.29 2.34 |SPavg| 2.24 8.20 19.23 12.82 6.17 Far2= 1/(|SPavg|×|SPmin|) 0.445 0.059 0.009 0.018 0.069 FAR= LOG(Far1×Far2×Far3) 0.100 -1.030 -2.304 -1.850 -0.853 R2 |SAGmax| 0.20 0.34 0.09 0.40 0.33 Far1= |SAGmax|/CTs 0.172 1.037 0.277 0.655 0.843 |SPmin| 5.29 1.54 3.77 1.29 2.61 |SPavg| 10.31 5.26 17.86 5.15 7.30 Far2= 1/(|SPavg|×|SPmin|) 0.018 0.124 0.015 0.150 0.052 FAR= LOG(Far1×Far2×Far3) -1.975 -0.565 -2.058 -0.478 -1.005 L6 L7 L8 CTs 0.43 0.69 0.86 Ns (at wavelength 587.6 nm) 1.59 1.57 1.53 Far3= (1/(Ns-1)) ² 2.90 3.12 3.50 R1 |SAGmax| 0.85 1.32 1.87 Far1= |SAGmax|/CTs 2.002 1.910 2.164 |SPmin| 0.65 0.92 1.50 |SPavg| 2.92 2.60 3.10 Far2= 1/(|SPavg|×|SPmin|) 0.530 0.417 0.216 FAR= LOG(Far1×Far2×Far3) 0.488 0.395 0.214 R2 |SAGmax| 0.87 1.47 2.03 Far1= |SAGmax|/CTs 2.034 2.124 2.351 |SPmin| 1.32 1.32 1.17 |SPavg| 3.60 2.82 3.00 Far2= 1/(|SPavg|×|SPmin|) 0.210 0.267 0.284 FAR= LOG(Far1×Far2×Far3) 0.093 0.248 0.369

<Twelfth Embodiment>

The optical lens of the twelfth embodiment includes nine optical lenses, from the object side to the image side, respectively, optical lens L1, optical lens L2, optical lens L3, optical lens L4, optical lens L5, optical lens L6, optical lens L7, optical lens Lens L8 and optical lens L9. At least one of the nine optical lenses includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, and the anti-reflection coating includes At least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating is ceramic, the anti-reflection coating contains a plurality of holes, and the size of the outermost hole adjacent to the anti-reflection coating is larger than the size of the innermost hole adjacent to the anti-reflective coating. Among them, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor for the configuration of the anti-reflection coating of the optical lens is FAR, which satisfies the following conditions:| Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR.

The detailed parameters of the optical lenses included in the optical lens of the twelfth embodiment are listed in Table 12 below, and the definitions of the parameters are the same as those of the first embodiment, and will not be repeated here. Table 12. Optical lenses of the twelfth embodiment FOV (degrees) 86.76 L1 L2 L3 L4 L5 CTs 1.14 0.31 0.32 0.50 0.36 Ns (at wavelength 587.6 nm) 1.54 1.69 1.69 1.54 1.66 Far3= (1/(Ns-1)) ² 3.37 2.12 2.12 3.38 2.30 R1 |SAGmax| 0.96 0.24 0.11 0.12 0.28 Far1= |SAGmax|/CTs 0.837 0.780 0.336 0.247 0.788 |SPmin| 1.06 1.72 5.52 5.29 2.98 |SPavg| 2.26 7.69 15.38 13.70 7.04 Far2= 1/(|SPavg|×|SPmin|) 0.417 0.076 0.012 0.014 0.048 FAR= LOG(Far1×Far2×Far3) 0.070 -0.902 -2.076 -1.938 -1.064 R2 |SAGmax| 0.18 0.33 0.13 0.35 0.32 Far1= |SAGmax|/CTs 0.160 1.075 0.415 0.702 0.897 |SPmin| 6.02 1.32 2.17 1.09 2.82 |SPavg| 11.36 5.00 10.75 5.88 7.04 Far2= 1/(|SPavg|×|SPmin|) 0.015 0.152 0.043 0.156 0.050 FAR= LOG(Far1×Far2×Far3) -2.103 -0.460 -1.422 -0.431 -0.985 L6 L7 L8 L9 CTs 0.43 0.52 0.64 0.71 Ns (at wavelength 587.6 nm) 1.64 1.59 1.54 1.53 Far3= (1/(Ns-1)) ² 2.45 2.90 3.38 3.50 R1 |SAGmax| 0.94 1.56 1.02 1.51 Far1= |SAGmax|/CTs 2.170 2.992 1.594 2.120 |SPmin| 0.43 0.88 2.00 2.19 |SPavg| 2.53 2.29 4.50 3.97 Far2= 1/(|SPavg|×|SPmin|) 0.914 0.498 0.111 0.115 FAR= LOG(Far1×Far2×Far3) 0.687 0.635 -0.223 -0.068 R2 |SAGmax| 0.91 1.75 1.23 1.63 Far1= |SAGmax|/CTs 2.088 3.350 1.924 2.291 |SPmin| 1.23 0.71 1.72 1.72 |SPavg| 3.34 2.20 4.18 3.75 Far2= 1/(|SPavg|×|SPmin|) 0.242 0.638 0.139 0.156 FAR= LOG(Far1×Far2×Far3) 0.094 0.793 -0.044 0.097

<Measurement results of wavelength and reflectance>

Table 13 below is the reflectivity measurement results of the first comparative example and the first embodiment. Table 13. Reflectance measurement results of the first comparative example and the first example The first comparative example first embodiment Number of optical lenses 7 4 Optical Lenses with Anti-Reflection Coatings L6 L4 Optical lens surface with anti-reflection coating like side surface Object side surface and image side surface center surrounding center surrounding Valley Point T1 Wtc Wtp Wtc Wtp Wavelength (nm) 421 - 418 430 |Wtc-Wtp| |Wtc-Wtp| - 12 Reflectivity(%) Rtc Rtp Rtc Rtp 0.1693 - 0.2992 0.2457 T2 Wtc Wtp Wtc Wtp Wavelength (nm) 518 - 508 515 |Wtc-Wtp| |Wtc-Wtp| - 7 Reflectivity(%) Rtc Rtp Rtc Rtp 0.2943 - 0.0201 0.0385 T3 Wtc Wtp Wtc Wtp Wavelength (nm) 650 508 665 686 |Wtc-Wtp| |Wtc-Wtp| 142 twenty one Reflectivity(%) Rtc Rtp Rtc Rtp 0.1263 0.0843 0.0996 0.1651 peak point C1 wcc wcp wcc wcp Wavelength (nm) 462 - 449 457 |Wcc-Wcp| |Wcc-Wcp| - 8 Reflectivity(%) Rcc Rcp Rcc Rcp 0.4700 - 0.6566 0.4906 C2 wcc wcp wcc wcp Wavelength (nm) 557 - 586 602 |Wcc-Wcp| |Wcc-Wcp| - 16 Reflectivity(%) Rcc Rcp Rcc Rcp 0.3309 - 0.3734 0.5244

Table 14 below shows the measurement results of reflectivity of the second embodiment and the third embodiment. Table 14. Reflectance measurement results of the second embodiment and the third embodiment Second Embodiment Third Embodiment Number of optical lenses 5 5 Optical Lenses with Anti-Reflection Coatings L1 L4 Optical lens surface with anti-reflection coating Object side surface and image side surface Object side surface and image side surface center surrounding center surrounding Valley Point T1 Wtc Wtp Wtc Wtp Wavelength (nm) 421 424 424 433 |Wtc-Wtp| |Wtc-Wtp| 3 9 Reflectivity(%) Rtc Rtp Rtc Rtp 0.2476 0.2290 0.1846 0.1720 T2 Wtc Wtp Wtc Wtp Wavelength (nm) 502 508 506 508 |Wtc-Wtp| |Wtc-Wtp| 6 2 Reflectivity(%) Rtc Rtp Rtc Rtp 0.0174 0.0201 0.0138 0.0241 T3 Wtc Wtp Wtc Wtp Wavelength (nm) 658 667 645 652 |Wtc-Wtp| |Wtc-Wtp| 9 7 Reflectivity(%) Rtc Rtp Rtc Rtp 0.1193 0.1372 0.1616 0.2166 peak point C1 wcc wcp wcc wcp Wavelength (nm) 449 453 449 458 |Wcc-Wcp| |Wcc-Wcp| 4 9 Reflectivity(%) Rcc Rcp Rcc Rcp 0.4738 0.4434 0.2909 0.2669 C2 wcc wcp wcc wcp Wavelength (nm) 581 582 581 587 |Wcc-Wcp| |Wcc-Wcp| 1 6 Reflectivity(%) Rcc Rcp Rcc Rcp 0.3815 0.4242 0.2728 0.3223

Table 15 below is the reflectivity measurement results of the sixth embodiment and the seventh embodiment. Table 15. Reflectance measurement results of the sixth embodiment and the seventh embodiment Sixth Embodiment Seventh Embodiment Number of optical lenses 7 7 Optical Lenses with Anti-Reflection Coatings L6 L7 Optical lens surface with anti-reflection coating like side surface Object side surface and image side surface center surrounding center surrounding Valley Point T1 Wtc Wtp Wtc Wtp Wavelength (nm) 421 420 613 604 |Wtc-Wtp| |Wtc-Wtp| 1 9 Reflectivity(%) Rtc Rtp Rtc Rtp 0.0232 0.0345 0.1770 0.1735 T2 Wtc Wtp Wtc Wtp Wavelength (nm) 508 504 - - |Wtc-Wtp| |Wtc-Wtp| 4 - Reflectivity(%) Rtc Rtp Rtc Rtp 0.0602 0.0630 - - T3 Wtc Wtp Wtc Wtp Wavelength (nm) 647 650 - - |Wtc-Wtp| |Wtc-Wtp| 3 - Reflectivity(%) Rtc Rtp Rtc Rtp 0.0441 0.0573 - - peak point C1 wcc wcp wcc wcp Wavelength (nm) 450 454 - - |Wcc-Wcp| |Wcc-Wcp| 4 - Reflectivity(%) Rcc Rcp Rcc Rcp 0.3803 0.3615 - - C2 wcc wcp wcc wcp Wavelength (nm) 573 573 - - |Wcc-Wcp| |Wcc-Wcp| 0 - Reflectivity(%) Rcc Rcp Rcc Rcp 0.2479 0.2816 - -

Please refer to FIG. 1 to FIG. 6 together. FIG. 6 is a graph showing the relationship between the reflectance and the wavelength of the optical lens of the first comparative example. The optical lens of the present disclosure has a certain number of reflectivity troughs and reflectivity peaks in the wavelength range of 400 nm - 700 nm. The order of reflectivity trough points (Trough) is defined as the center of the optical lens, from short wavelength to The long wavelengths are sequentially T1, T2, T3, etc., and increase in this way. The order of the reflectivity peaks (Crest) is defined by the center of the optical lens. From short wavelengths to long wavelengths, C1, C2... and so on, increasing in this way.

On the basis of the above, the reflectance difference between the center and the periphery (near the maximum effective diameter) of the optical lens can be compared. As can be seen in Figure 6, the reflectivity difference between the center and the periphery of the first comparative example is too large, and there are no obvious and equal reflectivity peaks and reflectivity valleys, so they cannot be compared. Insufficient coating technology and poor film thickness control.

In the present invention, the reflectivity is the measurement data of the surface of the optical element, and the transmittance is the measurement data after the combination of the overall optical lens.

<Anti-reflection coating configuration and image quality test results>

Table 16, Table 17, and Table 18 below show the configurations of the anti-reflection coatings of the first comparative example, the second example, and the seventh example, respectively. Table 16. The configuration of the anti-reflection coating of the first comparative example Physical Vapor Deposition (PVD) Layer order material refractive index Physical Thickness (nm) substrate plastic 1.55 - 1 TiO ₂ 2.35 14 2 _SiO2 1.46 33 3 TiO ₂ 2.35 56 4 _SiO2 1.46 9 5 TiO ₂ 2.35 42 6 _SiO2 1.46 92 Total Film Thickness (tTK) 246 Table 17. The configuration of the anti-reflection coating in the second embodiment Atomic Layer Deposition (ALD) Layer order material refractive index Physical Thickness (nm) substrate plastic 1.53 - 1 TiO ₂ 2.51 14 2 _SiO2 1.46 29 3 TiO ₂ 2.51 67 4 _SiO2 1.46 6 5 TiO ₂ 2.51 31 6 _SiO2 1.46 90 Total Film Thickness (tTK) 238 Table 18, the configuration of the anti-reflection coating in the seventh embodiment Atomic Layer Deposition (ALD) Layer order material refractive index Physical Thickness (nm) substrate plastic 1.49 - 1 Al ₂ O ₃ 1.21 246 Total Film Thickness (tTK) 246

The anti-reflection coating configuration (Coating Design) is only exemplified by the second embodiment and the seventh embodiment. The same coating design or appropriately changed coating design can also be applied to the optical lenses of other embodiments, and the anti-reflection coating design can be changed as required. The number of layers of the reflective coating, the material of the optical lens, the high-refractive index material and the low-refractive index material of the anti-reflection coating, and can be applied to different optical lenses and the most suitable optical lenses after evaluating the best configuration factor. The refractive index of the outermost Al ₂ O ₃ film layer is graded from a lower refractive index to a higher refractive index from the outer (air) to the inner (substrate), and the effect of the graded refractive index layer is approximately equivalent to A film with a refractive index of about 1.21.

The measurement wavelength (Reference Wavelength) of the refractive index in the present invention is 510 nm or 587.6 nm.

In addition to the configurations of the anti-reflection coatings mentioned in Table 17 and Table 18 above, the anti-reflection coatings of the present disclosure may also have the following configurations:

(1) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can contain six layers. The materials from the innermost layer to the outermost layer of the anti-reflection coating are TiO ₂ , SiO _{2. TiO2} , _SiO2 , _TiO2 and _Al2O3 , and the optical lens including anti _- reflection coating is made of a plastic material.

(2) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can include eight layers. The materials from the innermost layer to the outermost layer of the anti-reflection coating are Al ₂ O ₃ respectively. , TiO ₂ , SiO ₂ , TiO ₂ , SiO ₂ , TiO ₂ , SiO ₂ and Al ₂ O ₃ , and the optical lens including anti-reflection coating is made of a plastic material.

(3) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can include seven layers, and the materials from the innermost layer to the outermost layer of the anti-reflection coating are Al ₂ O ₃ respectively. , TiO ₂ , SiO ₂ , TiO ₂ , SiO ₂ , TiO ₂ and SiO ₂ , and the optical lens including anti-reflection coating is made of a plastic material.

(4) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can include two layers. The materials from the innermost layer to the outermost layer of the anti-reflection coating are Al ₂ O ₃ respectively. and MgF ₂ , and the optical lens including anti-reflection coating is made of a plastic material.

(5) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can include two layers. The materials from the innermost layer to the outermost layer of the anti-reflection coating are Al ₂ O ₃ respectively. and SiO ₂ , and the optical lens including anti-reflection coating is made of a plastic material.

(6) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can include three layers. The materials from the innermost layer to the outermost layer of the anti-reflection coating are Al ₂ O ₃ respectively. , SiO ₂ and MgF ₂ , and the optical lens including anti-reflection coating is made of a plastic material.

(7) The anti-reflection coating is made by atomic layer deposition coating technology. The anti-reflection coating can include a layer, the material of the layer is AlN, and the optical lens including the anti-reflection coating is made of a plastic material.

Table 19 below is a comparison of the thicknesses of the anti-reflection coatings at the center and the periphery of the optical lens of the first comparative example, the second example and the seventh example. Table 19. Thickness of anti-reflection coating The first comparative example Second Embodiment Seventh Embodiment Thickness at the center (Tc, nm) Thickness at the periphery (Tp, nm) Thickness at the center (Tc, nm) Thickness at the periphery (Tp, nm) Thickness at the center (Tc, nm) Thickness at the periphery (Tp, nm) 246.65 208.02 245.23 244.31 246.60 243.00 |Tc-Tp|/Tc 18.57% 0.38% 1.48% Reference wavelength (nm) 510.00 510.00 Incidence angle (degrees) 0 0

Please refer to Figures 7A and 7B, Figure 7A is a test chart of the image quality of the optical lens of the first comparative example under the incident strong light of 55 degrees, and Figure 7B is the optical lens of the second embodiment at 55 degrees of incidence The test chart of the lens image quality under strong light, wherein the anti-reflection coating of the second embodiment is made by the atomic layer deposition coating technology. It can be seen from Figures 7A and 7B that although the first comparative example and the second embodiment both have oblique stripe flares, compared with the first comparative example, the flare intensity of the second embodiment is obvious. lower, indicating that the optical lens of the second embodiment can indeed obtain better imaging quality.

Furthermore, please refer to Figure 8A and Figure 8B together, Figure 8A is a cross-sectional view at the center of an optical lens comprising an anti-reflection coating of the seventh embodiment, and Figure 8B is a seventh embodiment that includes an anti-reflection coating. Sectional view of the perimeter of a coated optical lens. It can be seen from Figure 8A and Figure 8B that the outer holes of the anti-reflection coating are relatively larger than the inner holes, which means that in the same plane, the irregular branched nanofiber structure on the outside of the anti-reflection coating is sparsely distributed, while the inner irregularities The branched nanofiber structure is densely distributed.

<Thirteenth embodiment>

The anti-reflection element of the optical lens of the thirteenth embodiment may include at least one filter element or a protective glass, which are respectively a filter element F1, a filter element F2, a filter element F3, a filter element F4, and a filter element F5 , filter element F6 or protective glass G1. The detailed parameters of each filter element and protective glass optionally included in the optical lens of the thirteenth embodiment are listed in Table 20 below, and the parameter definitions are the same as those of the first embodiment, and will not be repeated here. Table 20. Optical lens of the thirteenth embodiment F1 F2 F3 F4 F5 CTs 0.55 0.30 0.20 0.55 0.30 Ns (at wavelength 587.6 nm) 1.53 1.53 1.62 1.69 1.77 Far3= (1/(Ns-1)) ² 3.501 3.570 2.601 2.100 1.687 F6 G1 CTs 0.20 0.55 Ns (at wavelength 587.6 nm) 1.82 1.92 Far3= (1/(Ns-1)) ² 1.487 1.181

Table 21 and Table 22 below respectively show the two anti-reflection coating configurations of the thirteenth embodiment. Table 21. An anti-reflection coating configuration of the thirteenth embodiment Layer order material refractive index Physical Thickness (nm) substrate glass/plastic 1.53 – 1.92 - 1 _SiO2 1.46 (N1) twenty one 2 TiO ₂ 2.35 (N2) 9 3 _SiO2 1.46 (N3) 48 4 TiO ₂ 2.35 (N4) 4 5 _SiO2 1.46 (N5) 65 6 Al ₂ O ₃ 1.21 (N6) 120 Total Film Thickness (tTK) 267 Table 22. Another anti-reflection coating configuration of the thirteenth embodiment Layer order material refractive index Physical Thickness (nm) substrate glass/plastic 1.53 – 1.92 - 1 _SiO2 1.46 (N1) 100 2 Al ₂ O ₃ 1.21 (N2) 115 Total Film Thickness (tTK) 215

In the anti-reflection coating of the present disclosure, the film layer closest to the substrate is the first film layer, followed by the second film layer, the third film layer, etc., and the second film layer is in contact with the first film layer, according to And so on. The refractive index of the first film layer is N1, the refractive index of the second film layer is N2... and so on.

In the configuration method of an anti-reflection coating in the thirteenth embodiment, the substrate is glass or plastic, the refractive index of the substrate is 1.53 - 1.92, the thickness of the substrate is 0.20 mm, 0.30 mm or 0.55 mm, and the first film layer is SiO ₂ , the refractive index of the first layer is 1.46, the thickness of the first layer is 21 nm, the second layer is TiO ₂ , the refractive index of the second layer is 2.35, and the thickness of the second layer is 9 nm , the third film layer is SiO ₂ , the refractive index of the third film layer is 1.46, the thickness of the third film layer is 48 nm, the fourth film layer is TiO ₂ , the refractive index of the fourth film layer is 2.35, and the fourth film layer is The thickness of the layer is 4 nm, the fifth layer is SiO ₂ , the refractive index of the fifth layer is 1.46, the thickness of the fifth layer is 65 nm, the sixth layer is Al ₂ O ₃ , and the sixth layer is The graded refractive index and the equivalent refractive index are about 1.21, and the thickness of the sixth film layer is 120 nm. The equivalent refractive index of the sixth film layer is smaller than that of the first film layer, the second film layer, the third film layer, the fourth film layer, the fifth film layer and the substrate, and the refractive index of the fifth film layer is smaller than that of the fourth film layer The refractive index of the layer, the refractive index of the fourth layer is greater than the refractive index of the third layer, the refractive index of the third layer is less than the refractive index of the second layer, and the refractive index of the second layer is greater than that of the first layer. The refractive index, the refractive index of the first film layer is less than the refractive index of the substrate.

In another anti-reflection coating configuration method of the thirteenth embodiment, the substrate is glass or plastic, the refractive index of the substrate is 1.53 - 1.92, the thickness of the substrate is 0.20 mm, 0.30 mm or 0.55 mm, and the first film layer It is SiO ₂ , the refractive index of the first film layer is 1.46, the thickness of the first film layer is 100 nm, the second film layer is Al ₂ O ₃ , the second film layer is graded refractive index and the equivalent refractive index is about 1.21, the thickness of the second film layer is 115 nm. The equivalent refractive index of the second film layer is smaller than that of the first film layer and the base material, and the refractive index of the first film layer is smaller than that of the base material.

Please refer to Figures 9A and 9B. Figure 9A is a test chart of the image quality of the optical lens of the first comparative example under a large angle (19 degrees) incident strong light, and Figure 9B is the optical lens of the thirteenth embodiment. The test chart of the lens image quality under the strong light incident of the lens at a large angle (19 degrees). It can be seen from Figures 9A and 9B that the first comparative example has obvious stray light at the corners of the image, while the thirteenth embodiment has no obvious stray light at the corners of the image, illustrating the optical lens of the thirteenth embodiment. Indeed, in the case of large-angle strong light, it can effectively improve the problem of corner stray light.

Furthermore, please refer to FIG. 10A and FIG. 10B , FIG. 10A is a test chart of the lens image quality of the microlens of the first comparative example, and FIG. 10B is a test chart of the lens image quality of the microlens of the thirteenth embodiment. It can be seen from Figures 10A and 10B that the first comparative example has obvious petal-shaped stray light, but the thirteenth embodiment does not, indicating that the optical lens of the thirteenth embodiment can significantly improve the problem of petal-shaped stray light. .

<Measurement results of reflectance and transmittance>

Table 23 and Table 24 below are the reflectance measurement results of the second comparative example, the fourteenth embodiment and the fifteenth embodiment. Table 23. Reflectance measurement results of the second comparative example, the fourteenth example and the fifteenth example Second Comparative Example Fourteenth Embodiment fifteenth embodiment combination Anti-reflection element Anti-reflection element Anti-reflection element The first surface of the anti-reflection element Infrared filter coating Infrared filter coating Infrared filter coating and anti-reflection coating of the present invention The second surface of the anti-reflection element conventional anti-reflection coatings The anti-reflection coating of the present invention The anti-reflection coating of the present invention WRmin (nm) 510 580 585 Reflectivity(%) R4060 1.4 0.2 0.1 R4063 1.4 0.2 0.1 R4065 1.4 0.2 0.1 R40100 2.4 0.8 0.7 R5060 1.3 0.2 0.1 R6070 1.9 0.5 0.4 R67100 3.1 1.3 1.2 R70100 3.2 1.3 1.3 R80100 3.4 1.5 1.4 R90100 3.5 1.6 1.5 R50 1.3 0.2 0.1 R60 1.4 0.1 0.0 R65 1.7 0.5 0.5 R70 2.5 0.9 0.8 R80 3.0 1.2 1.1 R90 3.4 1.5 1.4 R100 3.7 1.8 1.7 Table 24. Measurement results of reflectivity of the anti-reflection elements of the second comparative example, the fourteenth example and the fifteenth example Wavelength (nm) Second Comparative Example Fourteenth Embodiment fifteenth embodiment 400 2.0 0.0 0.0 405 1.7 0.3 0.2 410 1.8 0.2 0.1 415 1.8 0.2 0.0 420 1.7 0.3 0.2 425 1.7 0.2 0.1 430 1.5 0.1 0.0 435 1.4 0.1 0.0 440 1.5 0.3 0.1 445 1.6 0.2 0.1 450 1.4 0.1 0.0 455 1.5 0.4 0.2 460 1.3 0.2 0.1 465 1.3 0.2 0.1 470 1.3 0.2 0.0 475 1.3 0.2 0.0 480 1.4 0.2 0.0 485 1.3 0.2 0.1 490 1.3 0.2 0.1 495 1.3 0.2 0.1 500 1.3 0.2 0.1 505 1.3 0.2 0.1 510 1.3 0.2 0.1 515 1.3 0.2 0.1 520 1.3 0.2 0.1 525 1.3 0.2 0.1 530 1.3 0.2 0.1 535 1.3 0.1 0.1 540 1.3 0.2 0.1 545 1.3 0.2 0.1 550 1.3 0.1 0.0 555 1.3 0.2 0.1 560 1.3 0.2 0.0 565 1.3 0.1 0.1 570 1.4 0.1 0.1 575 1.4 0.1 0.1 580 1.4 0.1 0.1 585 1.4 0.1 0.0 590 1.4 0.1 0.0 595 1.4 0.2 0.1 600 1.4 0.1 0.0 605 1.4 0.1 0.0 610 1.4 0.1 0.0 615 1.4 0.1 0.0 620 1.5 0.1 0.0 625 1.5 0.1 0.0 630 1.5 0.1 0.0 635 1.5 0.1 0.0 640 1.5 0.2 0.1 645 1.6 0.3 0.2 650 1.7 0.5 0.5 655 2.0 0.7 0.7 660 2.2 0.8 0.8 665 2.3 0.8 0.8 670 2.3 0.8 0.8 675 2.4 0.9 0.8 680 2.4 0.9 0.8 685 2.4 0.9 0.8 690 2.5 0.9 0.8 695 2.5 0.9 0.8 700 2.5 0.9 0.8 705 2.6 0.9 0.9 710 2.6 0.9 0.9 715 2.6 1.0 0.9 720 2.7 1.0 0.9 725 2.7 1.0 1.0 730 2.7 1.0 0.9 735 2.8 1.0 1.0 740 2.8 1.1 1.0 745 2.8 1.1 1.0 750 2.8 1.1 1.0 755 2.9 1.1 1.0 760 2.9 1.1 1.1 765 2.9 1.1 1.1 770 2.9 1.1 1.1 775 2.9 1.1 1.1 780 3.0 1.2 1.1 785 3.0 1.2 1.1 790 3.0 1.2 1.1 795 3.0 1.2 1.1 800 3.0 1.2 1.1 805 3.1 1.2 1.1 810 3.1 1.2 1.2 815 3.1 1.2 1.2 820 3.1 1.3 1.2 825 3.1 1.3 1.2 830 3.2 1.3 1.2 835 3.2 1.3 1.2 840 3.2 1.3 1.2 845 3.3 1.4 1.3 850 3.2 1.3 1.3 855 3.2 1.3 1.3 860 3.3 1.4 1.3 865 3.3 1.4 1.3 870 3.3 1.4 1.3 875 3.3 1.4 1.3 880 3.4 1.4 1.4 885 3.4 1.5 1.4 890 3.3 1.4 1.4 895 3.4 1.5 1.4 900 3.4 1.5 1.4 905 3.4 1.5 1.4 910 3.5 1.5 1.4 915 3.4 1.5 1.5 920 3.5 1.6 1.5 925 3.5 1.6 1.5 930 3.5 1.6 1.5 935 3.5 1.6 1.5 940 3.5 1.6 1.5 945 3.6 1.6 1.5 950 3.5 1.6 1.5 955 3.5 1.7 1.6 960 3.6 1.7 1.5 965 3.6 1.7 1.6 970 3.6 1.6 1.6 975 3.7 1.7 1.5 980 3.6 1.7 1.6 985 3.6 1.7 1.6 990 3.7 1.7 1.7 995 3.6 1.7 1.7 1000 3.7 1.8 1.7

Please refer to Fig. 11 to Fig. 13 together. Fig. 11 is a graph showing the relationship between the reflectivity and wavelength of the anti-reflection element of the second comparative example, and Fig. 12 is the reflectivity and wavelength of the anti-reflection element of the fourteenth embodiment. The relationship diagram of wavelength, Fig. 13 is the relationship diagram of reflectance and wavelength of the anti-reflection element of the fifteenth embodiment. From FIGS. 11 to 13, it can be known that the reflectivity of the fourteenth embodiment and the fifteenth embodiment is significantly lower than that of the second comparative example, indicating that the fourteenth embodiment and the fifteenth embodiment transmit through Different coating methods can be used to obtain excellent anti-reflection effect.

Table 25 and Table 26 below are the transmittance measurement results of the second comparative example and the fourteenth example. Table 25. The transmittance measurement results of the second comparative example and the fourteenth example Second Comparative Example Fourteenth Embodiment combination Anti-reflection element Anti-reflection element The first surface of the anti-reflection element Infrared filter coating Infrared filter coating The second surface of the anti-reflection element conventional anti-reflection coatings The anti-reflection coating of the present invention Penetration rate (%) Tmax 98 100 T4060 95 99 T5060 98 100 T70100 0.16 0.15 T40 38 94 T50 98 99 T60 98 99 T70 0.43 0.14 Table 26. Transmittance measurement results of the anti-reflection elements of the second comparative example and the fourteenth example Wavelength (nm) Second Comparative Example Fourteenth Embodiment 400 38.0 93.8 405 73.0 96.2 410 91.1 97.5 415 94.7 98.2 420 96.2 98.7 425 96.8 98.7 430 97.2 98.3 435 97.0 97.6 440 97.1 97.9 445 97.7 98.7 450 97.8 99.4 455 98.0 99.5 460 98.2 99.5 465 98.0 99.4 470 98.2 99.3 475 98.3 99.3 480 98.2 99.2 485 98.3 99.5 490 97.9 99.4 495 97.7 99.4 500 97.9 99.4 505 97.7 99.3 510 97.1 99.5 515 97.0 99.7 520 97.2 99.7 525 97.5 99.8 530 97.7 99.9 535 97.9 99.9 540 97.7 100.0 545 97.7 100.0 550 97.9 100.0 555 98.3 100.0 560 98.2 100.0 565 97.3 99.7 570 96.8 99.4 575 97.5 99.4 580 98.0 99.6 585 98.2 99.8 590 98.0 99.7 595 97.9 99.4 600 98.0 99.4 605 98.2 99.1 610 98.0 99.0 615 98.0 98.5 620 97.7 97.5 625 96.9 96.6 630 96.5 96.8 635 96.4 97.3 640 96.1 94.6 645 93.2 79.1 650 79.1 49.3 655 47.2 19.9 660 18.9 6.6 665 7.0 3.0 670 3.5 1.8 675 2.2 1.3 680 1.5 0.9 685 1.1 0.5 690 0.8 0.3 695 0.6 0.2 700 0.4 0.1 705 0.4 0.1 710 0.3 0.1 715 0.2 0.1 720 0.2 0.1 725 0.1 0.1 730 0.1 0.1 735 0.2 0.1 740 0.2 0.1 745 0.2 0.1 750 0.2 0.1 755 0.1 0.1 760 0.1 0.1 765 0.1 0.1 770 0.1 0.1 775 0.1 0.1 780 0.1 0.1 785 0.1 0.1 790 0.1 0.1 795 0.1 0.1 800 0.1 0.1 805 0.1 0.1 810 0.1 0.1 815 0.1 0.1 820 0.1 0.1 825 0.1 0.1 830 0.2 0.1 835 0.1 0.2 840 0.2 0.3 845 0.2 0.3 850 0.4 0.3 855 0.3 0.2 860 0.2 0.1 865 0.1 0.2 870 0.4 0.1 875 0.0 0.2 880 0.3 0.3 885 0.3 0.1 890 0.1 0.2 895 0.3 0.4 900 0.1 0.3 905 0.2 0.3 910 0.3 0.2 915 0.2 0.2 920 0.1 0.2 925 0.0 0.2 930 0.3 0.1 935 0.1 0.1 940 0.1 0.1 945 0.1 0.1 950 -0.1 0.1 955 0.1 0.2 960 0.1 0.2 965 0.2 0.3 970 0.1 0.4 975 0.1 0.4 980 0.1 0.3 985 0.2 0.1 990 0.0 0.3 995 0.1 0.2 1000 0.0 0.1

Please refer to Fig. 14 and Fig. 15 together. Fig. 14 is a graph showing the relationship between the transmittance and wavelength of the anti-reflection element of the second comparative example, and Fig. 15 is the transmittance of the anti-reflection element of the fourteenth embodiment. A plot of rate versus wavelength. It can be seen from FIG. 14 and FIG. 15 that the transmittances of the fourteenth embodiment and the second comparative example at different wavelengths are similar, which means that the fourteenth embodiment can maintain good transmittance at short wavelengths, and It can also have good filtering effect at long wavelengths.

<Fifteenth Embodiment>

Please refer to FIG. 16 , which is a schematic diagram of an imaging device according to an embodiment of the disclosure. The imaging device of the fifteenth embodiment includes a curved surface element 110 , an optical lens 120 and an electronic photosensitive element 150 in sequence from the object side to the image side, and the electronic photosensitive element 150 is disposed on the imaging surface 140 of the optical lens 120 .

Please refer to Fig. 17A to Fig. 17D together. Fig. 17A, Fig. 17B, Fig. 17C and Fig. 17D are the image pickup devices shown in Fig. 16 at positions 17A, 17B, 17C and 17D respectively. A partial enlarged schematic diagram of . The object-side surface 111 of the curved element 110 includes a phase subwavelength structure, and its detailed structure is shown in FIG. 17A , and the object-side surface 121 of the optical lens 120 includes a graphene structure, and its detailed structure is shown in FIG. 17B , the image-side surface 122 of the optical lens 120 includes an anti-reflection coating, and its detailed structure is shown in FIG. 17C . The imaging device may further include a phase subwavelength structure 130 , the detailed structure of which is shown in FIG. 17D .

Please refer to FIG. 18 , which is a schematic diagram of a diffractive element 160 in the imaging device. The imaging device may further include a diffractive element 160, at least one surface of the diffractive element 160 may include an anti-reflection coating, and the material of the anti-reflection coating of the diffractive element 160 may be aluminum oxide. In this embodiment, the object-side surface 161 of the diffractive element 160 includes an anti-reflection coating, and its detailed structure is shown in FIG. 17C .

Thereby, in the optical lens of the multi-optical lens of the present disclosure, an anti-reflection coating is prepared on a specific optical lens whose surface shape changes significantly, and the anti-reflection coating is prepared by a high-level coating technology, and the thickness of the anti-reflection coating at the center and the periphery of the optical lens is It has a high degree of consistency, so as to achieve a uniform anti-reflection effect in the entire field of view, so that the change and offset of the reflectivity waveform can be controlled within a small range, which helps to maintain the consistency of anti-reflection efficiency and achieve multi-optical lenses. The high specification requirements and high image quality of the optical lens. This disclosure focuses on controlling the coating configuration technology in the optical lens, which not only exerts the application value of the high-level coating technology, but also obtains the best production effect of the anti-reflection coating, so that the optical lens with a large surface change can be used in the full field of view. A consistent anti-reflection effect is obtained within the range, thereby reducing the reflection problem of large-angle strong light and improving the image quality of the overall optical lens.

Although the present disclosure has been disclosed above with examples, it is not intended to limit the present disclosure. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure. The scope of protection of the disclosed contents shall be determined by the scope of the appended patent application.

110: Surface Components 111, 121, 161: Object side surface 120: Optical lens 122: like side surface 130: Phase Subwavelength Structure 140: Imaging plane 150: Electronic photosensitive element 160: Diffractive element T1, T2, T3: Valley point C1,C2: peak point

In order to make the above and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the accompanying drawings are described as follows: Fig. 1 is a graph showing the relationship between reflectivity and wavelength of an optical lens according to the first embodiment; Fig. 2 is a graph showing the relationship between reflectivity and wavelength of an optical lens of the second embodiment; FIG. 3 is a graph showing the relationship between reflectivity and wavelength of an optical lens according to the third embodiment; FIG. 4 is a graph showing the relationship between reflectivity and wavelength of an optical lens according to the sixth embodiment; FIG. 5 is a graph showing the relationship between reflectivity and wavelength of an optical lens according to the seventh embodiment; FIG. 6 is a graph showing the relationship between reflectivity and wavelength of an optical lens of the first comparative example; Figure 7A is a test chart of the image quality of the optical lens of the first comparative example under the incident strong light of 55 degrees; FIG. 7B is a test chart of the image quality of the optical lens of the second embodiment under the incident strong light of 55 degrees; FIG. 8A is a cross-sectional view at the center of the optical lens including the anti-reflection coating according to the seventh embodiment; FIG. 8B is a cross-sectional view at the periphery of the optical lens including the anti-reflection coating according to the seventh embodiment; Figure 9A is a test chart of the image quality of the optical lens of the first comparative example under a large-angle incident strong light; Fig. 9B is a test chart of the image quality of the optical lens of the thirteenth embodiment under a large-angle incident strong light; Figure 10A is a test chart of the lens image quality of the microlens of the first comparative example; FIG. 10B is a test chart of the lens image quality of the microlens according to the thirteenth embodiment; Fig. 11 is a graph showing the relationship between the reflectivity and the wavelength of the anti-reflection element of the second comparative example; Fig. 12 is a graph showing the relationship between reflectivity and wavelength of the anti-reflection element of the fourteenth embodiment; Fig. 13 is a graph showing the relationship between the reflectivity and the wavelength of the anti-reflection element of the fifteenth embodiment; FIG. 14 is a graph showing the relationship between the transmittance and the wavelength of the anti-reflection element of the second comparative example; Fig. 15 is a graph showing the relationship between the transmittance and the wavelength of the anti-reflection element of the fourteenth embodiment; FIG. 16 is a schematic diagram of an imaging device according to an embodiment of the disclosure; Fig. 17A is a partially enlarged schematic view of the imaging device shown in Fig. 16 at 17A; Fig. 17B is a partially enlarged schematic view of the imaging device shown in Fig. 16 at 17B; Fig. 17C is a partial enlarged schematic view of the imaging device shown in Fig. 16 and the diffraction element shown in Fig. 18 at 17C; Fig. 17D is a partially enlarged schematic view of the imaging device shown in Fig. 16 at 17D; and FIG. 18 is a schematic diagram of a diffractive element in the imaging device.

Claims (28)

An optical lens comprising from the object side to the image side: at least four optical lenses; Wherein, at least one of the optical lens includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, the anti-reflection coating The coating film includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating film is ceramic, the anti-reflection coating film includes a plurality of holes, and the size of the holes adjacent to the outermost side of the anti-reflective coating film is larger than that adjacent to the anti-reflection coating film. the size of the holes on the innermost side of the reflective coating; Wherein, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor of the anti-reflection coating configuration of the optical lens is FAR, which The following conditions are met: |Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR. The optical lens of claim 1, wherein the first factor of the anti-reflection coating configuration of the optical lens is Far1, which satisfies the following conditions: 0.500 ≤ Far1. The optical lens of claim 2, wherein the second factor of the anti-reflection coating configuration of the optical lens is Far2, which satisfies the following conditions: 0.100 ≤ Far2. The optical lens of claim 3, wherein the third factor of the anti-reflection coating configuration of the optical lens is Far3, which satisfies the following conditions: 2.5 ≤ Far3. The optical lens according to claim 1, wherein the optical lens is a substrate, and the refractive index of the substrate is Ns, which satisfies the following conditions: Ns ≤ 1.7682. The optical lens according to claim 5, wherein the material of the film layer on the outermost side of the anti-reflection coating is aluminum oxide (Al ₂ O ₃ ). The optical lens of claim 6, wherein the anti-reflection coating comprises at least three layers, and the materials of the at least three layers are different. The optical lens of claim 1, wherein the reflectance valley point at the center of the optical lens has a relatively low reflectance wavelength in a range of Wtc, and the reflectance valley point at the periphery of the optical lens is within a range The wavelength with relatively low reflectivity is Wtp, which satisfies the following conditions: 0 nm ≤ |Wtc-Wtp| ≤ 25 nm. The optical lens of claim 8, wherein the reflectivity valley point at the center of the optical lens has a relatively low reflectivity Rtc within a range, which satisfies the following conditions: 0% < Rtc ≤ 0.300%. The optical lens as claimed in claim 9, wherein the reflectivity valley point at the periphery of the optical lens has a relatively low reflectivity Rtp within a range, which satisfies the following conditions: 0% < Rtp ≤ 0.300%. The optical lens of claim 1, wherein the reflectance peak point at the center of the optical lens has a relatively high reflectance wavelength in a range of Wcc, and the reflectance peak point at the periphery of the optical lens is within a range The wavelength with relatively high reflectivity is Wcp, which satisfies the following conditions: 0 nm ≤ |Wcc-Wcp| ≤ 20 nm. The optical lens of claim 11, wherein the reflectance peak point at the center of the optical lens has a relatively high reflectance Rcc within a range, which satisfies the following conditions: 0.200% ≤ Rcc ≤ 0.700%. The optical lens according to claim 12, wherein the reflectance peak point at the periphery of the optical lens has a relatively high reflectance Rcp within a range, which satisfies the following conditions: 0.200% ≤ Rcp ≤ 0.700%. The optical lens of claim 1, wherein at least one surface of the optical lens comprising the anti-reflection coating comprises at least one inflection point. The optical lens of claim 1, wherein the total number of layers of the anti-reflection coating is tLs, which satisfies the following conditions: 1 ≤ tLs ≤ 8. The optical lens of claim 1, wherein the total film thickness of the anti-reflection coating is tTk, which satisfies the following conditions: 200 nm < tTk ≤ 400 nm. An imaging device, comprising: An optical lens, which includes from the object side to the image side: at least four optical lenses; Wherein, at least one of the optical lens includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, the anti-reflection coating The coating film includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating film is ceramic, the anti-reflection coating film includes a plurality of holes, and the size of the holes adjacent to the outermost side of the anti-reflective coating film is larger than that adjacent to the anti-reflection coating film. the size of the holes on the innermost side of the reflective coating; Wherein, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor of the anti-reflection coating configuration of the optical lens is FAR, which The following conditions are met: |Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR; a diffractive element, at least one surface of which includes an anti-reflection coating, and the material of the anti-reflection coating of the diffractive element is aluminum oxide; and An electronic photosensitive element is arranged on an imaging surface of the optical lens. An imaging device, comprising: An optical lens, which includes from the object side to the image side: at least four optical lenses; Wherein, at least one of the optical lens includes an anti-reflection coating, the optical lens including the anti-reflection coating is made of a plastic material, the anti-reflection coating is located on the object side surface or the image side surface of the optical lens, the anti-reflection coating The coating film includes at least one film layer, the material of the film layer located on the outermost side of the anti-reflection coating film is ceramic, the anti-reflection coating film includes a plurality of holes, and the size of the holes adjacent to the outermost side of the anti-reflective coating film is larger than that adjacent to the anti-reflection coating film. the size of the holes on the innermost side of the reflective coating; Wherein, the total thickness of the anti-reflection coating at the center of the optical lens is Tc, the total thickness of the anti-reflection coating at the periphery of the optical lens is Tp, and the main factor of the anti-reflection coating configuration of the optical lens is FAR, which The following conditions are met: |Tc-Tp|/Tc ≤ 5.00%; and -1.5 ≤ FAR; a curved element, at least one surface of which includes a phase subwavelength structure; and An electronic photosensitive element is arranged on an imaging surface of the optical lens. An electronic device, which is a mobile device, includes: The imaging device of claim 17. An optical lens comprising from the object side to the image side: at least one optical lens; and at least one anti-reflection element; Wherein, at least one surface of at least one of the anti-reflection elements includes an anti-reflection coating, the anti-reflection element including the anti-reflection coating is made of a glass material, and the anti-reflection coating includes at least two layers, which are closest to the anti-reflection coating. One of the film layers of a base material of the reflective element is a first film layer, and the refractive index of the first film layer is smaller than the refractive index of the base material; Wherein, the main material of the film layer located on the outermost side of the anti-reflection coating is aluminum oxide, the anti-reflection coating includes a plurality of holes, and the size of the holes adjacent to the outermost side of the anti-reflection coating is larger than that adjacent to the innermost side of the anti-reflection coating the size of the holes, and the outermost layer has a graded index of refraction; Wherein, the total film thickness of the anti-reflection coating is tTk, which satisfies the following conditions: 200 nm < tTk ≤ 400 nm. The optical lens of claim 20, wherein the substrate is a flat panel element. The optical lens of claim 21, wherein the thickness of the substrate on the optical axis is CTs, which satisfies the following conditions: 0.15 mm < CTs ≤ 0.60 mm. The optical lens of claim 22, wherein the third factor of the anti-reflection coating configuration of the optical lens is Far3, which satisfies the following conditions: 1.0 ≤ Far3 ≤ 5.0. The optical lens of claim 23, wherein the average reflectance of the substrate at wavelengths of 400 nm - 630 nm is R4063, which satisfies the following conditions: 0% ≤ R4063 ≤ 1.3%. The optical lens of claim 24, wherein the average reflectance of the substrate at wavelengths of 670 nm - 1000 nm is R67100, which satisfies the following conditions: 0% ≤ R67100 ≤ 3.0%. The optical lens of claim 25, wherein the average transmittance of the substrate at wavelengths of 400 nm - 600 nm is T4060, which satisfies the following conditions: 95% ≤ T4060 ≤ 100%. The optical lens of claim 26, wherein the anti-reflection coating has a second film layer, the refractive index of the second film layer is greater than the refractive index of the first film layer, and the refractive index of the second film layer is greater than the refractive index of the second film layer The refractive index of the substrate, and the refractive index of the outermost film layer is equivalently smaller than the refractive index of the first film layer and the substrate. The optical lens of claim 20, wherein the substrate is a microlens.

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