Optical lens assembly and electronic device

Abstract

This disclosure provides an optical lens and an electronic device. The optical lens includes at least three optical lenses, comprising a first optical lens, a second optical lens, and a third optical lens from the object side to the image side of the optical lens. The at least three optical lenses include a blue glass lens and also include a long-wavelength absorbing lens or a long-wavelength filtering lens. By adding blue glass material to the optical lenses, the blue glass plate can be eliminated to prevent visible light reflection to the image sensor, thus helping to reduce petal-shaped flare and improve image quality.

Description

[Technical Field]

[0001] This disclosure relates to an optical lens and an electronic device, and more particularly to an optical lens and an electronic device comprising a blue glass lens. [Previous Technology]

[0002] A conventional method for filtering near-infrared light in optical lenses involves placing a blue glass plate coated with a near-infrared light filtering film as a filter in front of the image sensor. The combined use of the near-infrared light filtering film and the blue glass material reduces the interference of near-infrared light on optical imaging. However, while filtering near-infrared light, visible light reflects back and forth between the near-infrared light filtering film, the blue glass plate, and the image sensor. This repeated incident of reflected light on the image sensor produces petal-shaped flares that are difficult to eliminate, and these petal-shaped flares significantly degrade image quality. Furthermore, the blue glass plate and its near-infrared light filtering film are already crucial components that cannot be easily modified. Solving this defect requires developing novel near-infrared light filtering configurations. [Summary of the Invention]

[0003] This disclosure provides an optical lens and an electronic device that, by adding blue glass material to the optical lens, eliminates the need for a blue glass plate to prevent visible light from reflecting to the photosensitive element, which helps to reduce petal-shaped flares and improve image quality. Furthermore, by limiting a sixth setting factor on the blue glass lens, the difference in the optical path of the principal rays between the five equally divided fields of view and the 0.0 field of view can be reduced, thereby initially reducing the difference in near-infrared light filtering of the blue glass lens in each field of view.

[0004] According to this disclosure, an optical lens is provided, comprising at least three optical lenses, wherein the at least three optical lenses include a first optical lens, a second optical lens, and a third optical lens from the object side to the image side of the optical lens. The at least three optical lenses include a blue glass lens and a long-wavelength absorbing lens. The sixth setting factor of the blue glass lens is Fb6, the center thickness of the blue glass lens on the optical axis is CTB, the center thickness of the long-wavelength absorbing lens on the optical axis is CTA, and the distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens is TD, which satisfies the following conditions: 0.85 ≤ Fb6 ≤ 1.50; and 0.15 ≤ (CTB+CTA) / TD ≤ 0.40.

[0005] An electronic device is provided according to the present disclosure, comprising an optical lens as described above.

[0006] According to this disclosure, an optical lens is provided, comprising at least three optical lenses, wherein the at least three optical lenses include a first optical lens, a second optical lens, and a third optical lens from the object side to the image side of the optical lens. The at least three optical lenses include a blue glass lens, a long-wavelength filter lens, and a long-wavelength filter coating. The long-wavelength filter coating includes at least one low-refractive-index layer and at least one high-refractive-index layer, and the long-wavelength filter coating is composed of alternating stacked high-refractive-index and low-refractive-index layers. The sixth setting factor of the blue glass lens is Fb6, the coating setting factor of the object-side surface of the long-wavelength filter lens is FcR1, and the coating setting factor of the image-side surface of the long-wavelength filter lens is FcR2, which satisfy the following conditions: 0.80 ≤ Fb6 ≤ 1.40; and at least one of 10.00 ≤ FcR1 and 10.00 ≤ FcR2.

[0007] An electronic device is provided according to the present disclosure, comprising an optical lens as described above.

Implementation Method

[0009] This disclosure provides an optical lens and an electronic device that, by adding blue glass material to the optical lens, eliminates the need for a blue glass plate to prevent visible light from reflecting to the photosensitive element, which helps to reduce petal-shaped flares and improve image quality. Furthermore, by limiting a sixth setting factor on the blue glass lens, the difference in the optical path of the principal rays between the five equally divided fields of view and the 0.0 field of view can be reduced, thereby initially reducing the difference in near-infrared light filtering of the blue glass lens in each field of view.

[0010] One embodiment of this disclosure provides an optical lens comprising at least three optical lenses, wherein the at least three optical lenses, from the object side to the image side, include a first optical lens, a second optical lens, and a third optical lens. The at least three optical lenses include a blue glass lens and a long-wavelength absorbing lens. The sixth setting factor of the blue glass lens is Fb6, the center thickness of the blue glass lens on the optical axis is CTB, the center thickness of the long-wavelength absorbing lens on the optical axis is CTA, and the distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens is TD, which satisfies the following conditions: 0.85 ≤ Fb6 ≤ 1.50; and 0.15 ≤ (CTB+CTA) / TD ≤ 0.40. Therefore, by adding blue glass material to the optical lenses, the blue glass plate can be eliminated to avoid visible light reflection to the photosensitive element, which helps to reduce petal-shaped flare and improve image quality. Furthermore, by limiting the sixth setting factor on the blue glass lens, the difference in the optical path of the principal rays between the five equally divided fields of view and the 0.0 field of view can be reduced, which can initially reduce the difference in near-infrared light filtering of the blue glass lens in each field of view. Moreover, by satisfying the ratio of the total thickness of the blue glass lens and the long-wavelength absorbing lens to the optical lens, it is possible to avoid filtering red light due to excessive thickness, and also to avoid failing to filter near-infrared light due to excessive thinness, thus helping the optical lens to produce an appropriate filtering effect.

[0011] Another embodiment of this disclosure provides an optical lens comprising at least three optical lenses, wherein the at least three optical lenses comprise a first optical lens, a second optical lens, and a third optical lens from the object side to the image side of the optical lens. The at least three optical lenses include a blue glass lens and a long-wavelength filter lens. The long-wavelength filter lens includes a long-wavelength filter coating, which comprises at least one low-refractive-index layer and at least one high-refractive-index layer, wherein the long-wavelength filter coating consists of alternating stacks of high-refractive-index and low-refractive-index layers. The sixth setting factor of the blue glass lens is Fb6, the setting factor of the coating on the object-side surface of the long-wavelength filter lens is FcR1, and the setting factor of the coating on the image-side surface of the long-wavelength filter lens is FcR2, satisfying the following conditions: 0.80 ≤ Fb6 ≤ 1.40; and at least one of 10.00 ≤ FcR1 and 10.00 ≤ FcR2. Therefore, by adding blue glass material to the optical lens, the blue glass plate can be eliminated to prevent visible light reflection to the photosensitive element, which helps to reduce petal-shaped flare and improve image quality. Furthermore, by limiting the sixth setting factor on the blue glass lens, the difference in the optical path of the principal rays between the five equally divided fields of view and the 0.0 field of view can be reduced, which can initially reduce the near-infrared light filtering difference of the blue glass lens in each field of view. Moreover, by satisfying the coating setting factor on the object-side or image-side surface of the long-wavelength filtering lens, the surface undulation of the optical lens can be reduced, which helps to improve the uniformity of the filtering coating.

[0012] According to the optical lens disclosed herein, the sixth setting factor of the blue glass lens is Fb6, which satisfies the following condition: 0.80 ≤ Fb6 ≤ 1.50. This reduces the near-infrared light filtering differences of the blue glass lens across different fields of view. Alternatively, it satisfies the following condition: 0.85 ≤ Fb6 ≤ 1.40. Alternatively, it satisfies the following condition: 0.95 ≤ Fb6 ≤ 1.30. Alternatively, it satisfies the following condition: 1.00 ≤ Fb6 ≤ 1.20. Alternatively, it satisfies the following condition: 1.01 ≤ Fb6 ≤ 1.10.

[0013] According to the optical lens disclosed herein, the center thickness of the blue glass lens on the optical axis is CTB, the center thickness of the long-wavelength absorbing lens on the optical axis is CTA, and the distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens is TD, which can satisfy the following condition: 0.20 ≤ (CTB+CTA) / TD ≤ 0.30. This can further reduce the surface undulation of the optical lens, helping to improve the uniformity of the filter coating. Alternatively, it can satisfy the following condition: 0.22 ≤ (CTB+CTA) / TD ≤ 0.26. Alternatively, it can satisfy the following condition: 0.23 ≤ (CTB+CTA) / TD ≤ 0.25.

[0014] According to the optical lens disclosed herein, the coating setting factor on the object-side surface of the long-wavelength filtering lens is FcR1, which can satisfy the following condition: 15.00 ≤ FcR1 ≤ ∞. By satisfying the coating setting factor on the object-side surface of the long-wavelength filtering lens, the surface undulation of the optical lens can be reduced, which helps to improve the uniformity of the filtering coating. Alternatively, it can satisfy the following condition: 20.00 ≤ FcR1 ≤ 200.00. Alternatively, it can satisfy the following condition: 30.00 ≤ FcR1 ≤ 100.00.

[0015] According to the optical lens disclosed herein, the coating setting factor on the image-side surface of the long-wavelength filtering lens is FcR2, which satisfies the following condition: 15.00 ≤ FcR2 ≤ ∞. By satisfying the coating setting factor on the image-side surface of the long-wavelength filtering lens, the surface undulation of the optical lens can be reduced, which helps to improve the uniformity of the filtering coating. Alternatively, it can satisfy the following condition: 20.00 ≤ FcR2 ≤ 1000. Alternatively, it can satisfy the following condition: 30.00 ≤ FcR2 ≤ 500.00. Alternatively, it can satisfy the following condition: 50.00 ≤ FcR2 ≤ 200.00. Alternatively, it can satisfy the following condition: 100.00 ≤ FcR2 ≤ 150.00.

[0016] According to the optical lens disclosed herein, the first setting factor of the blue glass lens is Fb1, which satisfies the following condition: Fb1 ≤ 1.50. By limiting the first setting factor on the blue glass lens, a small magnification difference is ensured across the thickness of the blue glass lens at extreme optical paths, which helps to reduce the difference in near-infrared light filtering between the maximum and minimum optical path fields of view of the blue glass lens. Alternatively, it may satisfy the following condition: Fb1 ≤ 1.40. Alternatively, it may satisfy the following condition: Fb1 ≤ 1.30. Alternatively, it may satisfy the following condition: Fb1 ≤ 1.20. Alternatively, it may satisfy the following condition: 1.00 ≤ Fb1 ≤ 1.18. Alternatively, it may satisfy the following condition: 1.10 ≤ Fb1 ≤ 1.16.

[0017] According to the optical lens disclosed herein, the second setting factor of the blue glass lens is Fb2, which satisfies the following condition: Fb2 ≤ 0.30. By limiting the second setting factor on the blue glass lens, a small numerical difference in the extreme optical path length across the thickness of the blue glass lens is ensured, further reducing the difference in near-infrared light filtering between the maximum and minimum optical path field of view of the blue glass lens. Alternatively, it can satisfy the following condition: Fb2 ≤ 0.25. Alternatively, it can satisfy the following condition: Fb2 ≤ 0.20. Alternatively, it can satisfy the following condition: 0.10 ≤ Fb2 ≤ 0.18. Alternatively, it can satisfy the following condition: 0.14 ≤ Fb2 ≤ 0.16.

[0018] According to the optical lens disclosed herein, the third setting factor of the blue glass lens is Fb3, which satisfies the following condition: 0.50 ≤ Fb3 ≤ 2.00. By satisfying the third setting factor on the blue glass lens, the overall optical path across the entire field of view is ensured to be similar to the thickness of the blue glass lens, which helps to improve the filtering effect of the blue glass lens on near-infrared light across the entire field of view. Alternatively, it can satisfy the following condition: 0.60 ≤ Fb3 ≤ 1.80. Alternatively, it can satisfy the following condition: 0.70 ≤ Fb3 ≤ 1.50. Alternatively, it can satisfy the following condition: 0.80 ≤ Fb3 ≤ 1.20. Alternatively, it can satisfy the following condition: 0.90 ≤ Fb3 ≤ 1.10. Alternatively, it can satisfy the following condition: 0.95 ≤ Fb3 ≤ 1.08.

[0019] According to the optical lens disclosed herein, the fourth setting factor of the blue glass lens is Fb4, which satisfies the following condition: Fb4 ≤ 0.10. By limiting the fourth setting factor on the blue glass lens, a small optical path difference across the entire field of view is ensured, which helps to reduce the filtering difference of the blue glass lens for near-infrared light across the entire field of view. Alternatively, it can satisfy the following condition: Fb4 ≤ 0.08. Alternatively, it can satisfy the following condition: 0 < Fb4 ≤ 0.06. Alternatively, it can satisfy the following condition: 0.02 ≤ Fb4 ≤ 0.05.

[0020] According to the optical lens disclosed herein, the fifth setting factor of the blue glass lens is Fb5, which satisfies the following condition: 0.05 ≤ Fb5 ≤ 0.40. By satisfying the fifth setting factor on the blue glass lens, the blue glass lens can filter out appropriate near-infrared light, achieving the best effect in near-infrared light filtering. Alternatively, it can satisfy the following condition: 0.08 ≤ Fb5 ≤ 0.30. Alternatively, it can satisfy the following condition: 0.10 ≤ Fb5 ≤ 0.20. Alternatively, it can satisfy the following condition: 0.12 ≤ Fb5 ≤ 0.18. Alternatively, it can satisfy the following condition: 0.15 ≤ Fb5 ≤ 0.16.

[0021] According to the optical lens disclosed herein, the effective diameter setting factor of the blue glass lens is FbY, which satisfies the following condition: FbY ≤ 0.27. By limiting the ratio of the maximum effective diameter of the blue glass lens to the maximum image height of the optical lens, excessive absorption of red light by the blue glass lens per unit area is avoided, which helps to improve image quality. Alternatively, it can satisfy the following condition: FbY ≤ 0.35. Alternatively, it can satisfy the following condition: FbY ≤ 0.30. Alternatively, it can satisfy the following condition: 0 ≤ FbY ≤ 0.26. Alternatively, it can satisfy the following condition: 0.05 ≤ FbY ≤ 0.24. Alternatively, it can satisfy the following condition: 0.10 ≤ FbY ≤ 0.22. Alternatively, it can satisfy the following condition: 0.15 ≤ FbY ≤ 0.21.

[0022] According to the optical lens disclosed herein, the overall setting factor of the blue glass lens is FB, which satisfies the following condition: 1.00 ≤ FB. By designing an appropriate overall setting factor on the blue glass lens, the setting requirements of the blue glass for the optical lens's full field of view can be comprehensively considered, which helps to optimize the near-infrared light filtering effect. Alternatively, it can satisfy the following condition: 0 < FB. Alternatively, it can satisfy the following condition: 0.50 ≤ FB. Alternatively, it can satisfy the following condition: 2.00 ≤ FB ≤ ∞. Alternatively, it can satisfy the following condition: 2.50 ≤ FB ≤ 100.00. Alternatively, it can satisfy the following condition: 3.00 ≤ FB ≤ 10.00. Alternatively, it can satisfy the following condition: 4.00 ≤ FB ≤ 5.00. Alternatively, it can satisfy the following condition: 4.05 ≤ FB ≤ 4.20.

[0023] According to the optical lens disclosed herein, the principal setting factor of the long-wavelength absorbing lens is FA, which satisfies the following condition: 1.50 ≤ FA. By designing an appropriate principal setting factor on the long-wavelength absorbing lens, a small optical path difference across the entire field of view is ensured, which helps to reduce the filtering difference of the long-wavelength absorbing lens for near-infrared light across the entire field of view. Alternatively, it can satisfy the following condition: 1.50 ≤ FA ≤ ∞. Alternatively, it can satisfy the following condition: 1.80 ≤ FA ≤ 100.00. Alternatively, it can satisfy the following condition: 2.00 ≤ FA ≤ 10.00. Alternatively, it can satisfy the following condition: 2.20 ≤ FA ≤ 5.00. Alternatively, it can satisfy the following condition: 2.40 ≤ FA ≤ 3.00. Alternatively, it can satisfy the following condition: 2.50 ≤ FA ≤ 2.60.

[0024] According to the optical lens disclosed herein, the material setting factor of the long-wavelength absorbing lens is Fam, which satisfies the following condition: 30.00 ≤ Fam ≤ 40.00. By satisfying the material setting factor on the long-wavelength absorbing lens, the material of the optical lens can be uniformly mixed with the long-wavelength absorbing material, which helps to improve the uniformity of the long-wavelength absorbing lens. Alternatively, it can satisfy the following condition: 20.00 ≤ Fam ≤ 50.00. Alternatively, it can satisfy the following condition: 25.00 ≤ Fam ≤ 45.00. Alternatively, it can satisfy the following condition: 35.00 ≤ Fam ≤ 38.00.

[0025] According to the optical lens disclosed herein, the center thickness of the blue glass lens along the optical axis is CTB, and the center thickness of the long-wavelength absorbing lens along the optical axis is CTA, which can satisfy the following condition: 1.20 ≤ CTB / CTA. By satisfying the thickness ratio of the blue glass lens and the long-wavelength absorbing lens, an optimal match between the blue glass lens and the long-wavelength absorbing lens can be achieved, which helps to improve the overall near-infrared light filtering effect of the optical lens. Alternatively, it can satisfy the following condition: 1.00 ≤ CTB / CTA. Alternatively, it can satisfy the following condition: 1.40 ≤ CTB / CTA. Alternatively, it can satisfy the following condition: 1.50 ≤ CTB / CTA ≤ 3.00. Alternatively, it can satisfy the following condition: 1.60 ≤ CTB / CTA ≤ 2.50. Alternatively, it can satisfy the following condition: 1.70 ≤ CTB / CTA ≤ 2.30. Alternatively, it can satisfy the following condition: 1.90 ≤ CTB / CTA ≤ 2.10.

[0026] According to the optical lens disclosed herein, the blue glass lens and the long-wavelength filter lens can be the same optical lens. The blue glass lens has the property of high temperature resistance. By setting the blue glass lens and the long-wavelength filter lens as the same optical lens, the deformation of the long-wavelength filter coating on the optical lens can be reduced and the imaging effect caused by lens deformation can be reduced, which helps to maintain the good imaging quality of the optical lens.

[0027] According to the optical lens disclosed herein, the merging setting factor of the blue glass lens object-side surface is FbcR1, which satisfies the following condition: 6.00 ≤ FbcR1. By satisfying the merging setting factor on the blue glass lens object-side surface, an optimal combination of blue glass and long-wavelength filtering coating can be achieved, contributing to improved overall near-infrared light filtering performance of the optical lens. Alternatively, it can satisfy the following condition: 10.00 ≤ FbcR1 ≤ ∞. Alternatively, it can satisfy the following condition: 20.00 ≤ FbcR1 ≤ 200.00. Alternatively, it can satisfy the following condition: 30.00 ≤ FbcR1 ≤ 100.00.

[0028] According to the optical lens disclosed herein, the merging setting factor of the image-side surface of the blue glass lens is FbcR2, which satisfies the following condition: 6.00 ≤ FbcR2. By satisfying the merging setting factor on the image-side surface of the blue glass lens, an optimal combination of blue glass and long-wavelength filtering coating can be achieved, which helps to improve the overall near-infrared light filtering effect of the optical lens. Alternatively, it can satisfy the following condition: 10.00 ≤ FbcR2 ≤ ∞. Alternatively, it can satisfy the following condition: 20.00 ≤ FbcR2 ≤ 1000. Alternatively, it can satisfy the following condition: 30.00 ≤ FbcR2 ≤ 500.00. Alternatively, it can satisfy the following condition: 40.00 ≤ FbcR2 ≤ 200.00. Alternatively, it can satisfy the following condition: 50.00 ≤ FbcR2 ≤ 100.00.

[0029] According to the optical lens disclosed herein, the total focal length of the optical lens is F, and the maximum angle of view of the optical lens is FOV, which can satisfy the following condition: tan(FOV / 2)×F ≤ 4.0. By satisfying the product of the half maximum angle of view tangent and the total focal length, the applicability of the blue glass lens to the optical lens can be greatly improved, which helps the blue glass lens to achieve an ideal near-infrared light filtering effect. Alternatively, it can satisfy the following condition: 0 < tan(FOV / 2)×F ≤ 3.0. Alternatively, it can satisfy the following condition: 1.00 ≤ tan(FOV / 2)×F ≤ 2.50. Alternatively, it can satisfy the following condition: 1.50 ≤ tan(FOV / 2)×F ≤ 2.30. Alternatively, it can satisfy the following condition: 1.80 ≤ tan(FOV / 2)×F ≤ 2.20. Alternatively, it can satisfy the following condition: 1.90 ≤ tan(FOV / 2)×F ≤ 2.10.

[0030] According to the optical lens disclosed herein, the total number of long-wavelength filtering coating layers is tLs, which satisfies the following condition: 20 ≤ tLs ≤ 60. By combining the blue glass lens with the long-wavelength filtering coating, the number of filtering coating layers can be reduced, and satisfying the required number of filtering coating layers helps to streamline the manufacturing process. Alternatively, it can satisfy the following condition: tLs ≤ 80. Alternatively, it can satisfy the following condition: 0 < tLs ≤ 70. Alternatively, it can satisfy the following condition: 30 ≤ tLs ≤ 50.

[0031] According to the optical lens disclosed herein, the total thickness of the long-wavelength filtering coating is tTk, which can satisfy the following condition: 4500 nm ≤ tTk ≤ 8000 nm. By combining the blue glass lens with the long-wavelength filtering coating, the thickness of the filtering coating can be reduced, and by satisfying the thickness of the filtering coating, manufacturing costs can be reduced. Alternatively, it can satisfy the following condition: 3000 nm ≤ tTk ≤ 10000 nm. Alternatively, it can satisfy the following condition: 4000 nm ≤ tTk ≤ 9000 nm. Alternatively, it can satisfy the following condition: 5000 nm ≤ tTk ≤ 7000 nm. Alternatively, it can satisfy the following condition: 5500 nm ≤ tTk ≤ 6000 nm.

[0032] According to the optical lens disclosed herein, the total thickness of the high-refractive-index film is HtTk, and the total thickness of the low-refractive-index film is LtTk, which can satisfy the following condition: 1.30 ≤ LtTk / HtTk ≤ 1.80. By designing a specific ratio between the total thickness of the low-refractive-index film and the total thickness of the high-refractive-index film, the near-infrared light filtering capability of the long-wavelength filtering lens can be improved, which helps to improve the near-infrared light filtering effect of the optical lens. Alternatively, it can satisfy the following condition: 1.00 ≤ LtTk / HtTk ≤ 2.00. Alternatively, it can satisfy the following condition: 1.20 ≤ LtTk / HtTk ≤ 1.90. Alternatively, it can satisfy the following condition: 1.50 ≤ LtTk / HtTk ≤ 1.70. Alternatively, it can satisfy the following condition: 1.55 ≤ LtTk / HtTk ≤ 1.65.

[0033] According to the optical lens disclosed herein, the refractive index of the high-refractive-index film is NH, and the refractive index of the low-refractive-index film is NL, which can satisfy the following condition: 0.80 ≤ NH-NL ≤ 1.50. By designing the refractive index difference between the high-refractive-index film and the low-refractive-index film, it helps the long-wavelength filtering lens to produce the best near-infrared light filtering effect. Alternatively, it can satisfy the following condition: 0.50 ≤ NH-NL. Alternatively, it can satisfy the following condition: 0.60 ≤ NH-NL. Alternatively, it can satisfy the following condition: 0.70 ≤ NH-NL ≤ 2.00. Alternatively, it can satisfy the following condition: 0.85 ≤ NH-NL ≤ 1.00.

[0034] According to the optical lens disclosed herein, the wavelength at 50% transmittance is Wt50, which satisfies the following condition: 600 nm ≤ Wt50 ≤ 650 nm. By limiting the wavelength at 50% transmittance, the 50% transmittance is confined to the visible light range, which helps to shift the filtering band of the optical lens towards visible light, thereby reducing the transmission of near-infrared light. Alternatively, it can satisfy the following condition: 600 nm ≤ Wt50 ≤ 700 nm. Alternatively, it can satisfy the following condition: 600 nm ≤ Wt50 ≤ 680 nm. Alternatively, it can satisfy the following condition: 600 nm ≤ Wt50 ≤ 660 nm.

[0035] According to the optical lens disclosed herein, the average transmittance of the optical lens at wavelengths from 600 nm to 650 nm is T6065, which satisfies the following condition: T6065 ≤ 50.00%. By limiting the transmittance at wavelengths from 600 nm to 650 nm, low transmittance of long-wavelength red light is ensured, thereby reducing excess red light and improving image quality. Alternatively, it may satisfy the following condition: T6065 ≤ 60.00%. Alternatively, it may satisfy the following condition: T6065 ≤ 55.00%. Alternatively, it may satisfy the following condition: T6065 ≤ 45.00%. Alternatively, it may satisfy the following condition: 0% ≤ T6065 ≤ 40.00%.

[0036] According to the optical lens disclosed herein, the average transmittance of the optical lens in the wavelength range of 650 nm to 700 nm is T6570, which satisfies the following condition: T6570 ≤ 20.00%. By limiting the transmittance in the wavelength range of 650 nm to 700 nm, ensuring low transmittance of short-wavelength near-infrared light helps to reduce imaging interference from short-wavelength near-infrared light. Alternatively, it can satisfy the following condition: T6570 ≤ 30.00%. Alternatively, it can satisfy the following condition: T6570 ≤ 25.00%. Alternatively, it can satisfy the following condition: T6570 ≤ 15.00%. Alternatively, it can satisfy the following condition: 0% ≤ T6570 ≤ 13.00%.

[0037] According to the optical lens disclosed herein, the average transmittance of the optical lens in the wavelength range of 700 nm to 1050 nm is T70105, which satisfies the following condition: T70105 ≤ 3.00%. By limiting the transmittance in the wavelength range of 700 nm to 1050 nm, ensuring low transmittance of near-infrared light in the detectable wavelength range of the photosensitive element helps to reduce imaging interference of near-infrared light in the detectable wavelength range. Alternatively, it can satisfy the following condition: T70105 ≤ 10.00%. Alternatively, it can satisfy the following condition: T70105 ≤ 5.00%. Alternatively, it can satisfy the following condition: T70105 ≤ 2.00%. Alternatively, it can satisfy the following condition: T70105 ≤ 1.00%. Alternatively, it can satisfy the following condition: 0% ≤ T70105 ≤ 0.50%.

[0038] According to the optical lens disclosed herein, the transmittance T85 at a wavelength of 850 nm satisfies the following condition: T85 ≤ 2.50%. By limiting the transmittance at a wavelength of 850 nm, the influence of products emitting 850 nm near-infrared light in daily life on optical imaging can be avoided. Alternatively, it can satisfy the following condition: T85 ≤ 10.00%. Alternatively, it can satisfy the following condition: T85 ≤ 5.00%. Alternatively, it can satisfy the following condition: T85 ≤ 1.00%. Alternatively, it can satisfy the following condition: T85 ≤ 0.50%. Alternatively, it can satisfy the following condition: 0% ≤ T85 ≤ 0.30%.

[0039] According to the optical lens disclosed herein, the transmittance T94 at a wavelength of 940 nm satisfies the following condition: T94 ≤ 2.50%. By limiting the transmittance at a wavelength of 940 nm, the influence of products emitting 940 nm near-infrared light in daily life on optical imaging can be avoided. Alternatively, it can satisfy the following condition: T94 ≤ 10.00%. Alternatively, it can satisfy the following condition: T94 ≤ 5.00%. Alternatively, it can satisfy the following condition: T94 ≤ 1.00%. Alternatively, it can satisfy the following condition: T94 ≤ 0.50%. Alternatively, it can satisfy the following condition: 0% ≤ T94 ≤ 0.30%.

[0040] According to the optical lens disclosed herein, the transmittance T105 at a wavelength of 1050 nm satisfies the following condition: T105 ≤ 2.50%. By limiting the transmittance at a wavelength of 1050 nm, the interference of products emitting 1050 nm near-infrared light in daily life on optical imaging can be avoided. Alternatively, it can satisfy the following condition: T105 ≤ 10.00%. Alternatively, it can satisfy the following condition: T105 ≤ 5.00%. Alternatively, it can satisfy the following condition: T105 ≤ 1.00%. Alternatively, it can satisfy the following condition: T105 ≤ 0.50%. Alternatively, it can satisfy the following condition: 0% ≤ T105 ≤ 0.30%.

[0041] The optical lens described in this disclosure may include various optical elements with visible light transmission characteristics, such as optical lenses, cover glass, blue glass, microlenses, and color filters.

[0042] The object side and image side of the optical lens described in this disclosure are as follows: the image side is the side of the optical axis closer to the photosensitive element, and the object side is the side of the optical axis farther away from the photosensitive element.

[0043] The optical lenses of the optical lens described in this disclosure may include at least one, at least two, at least three, at least four, at least five, at least six, at least seven, at least eight, at least nine, and at least ten optical lenses; the object side to the image side of the optical lens may consist of a first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth optical lenses, and so on. The aforementioned optical lenses may include blue glass lenses, long-wavelength absorbing lenses, and long-wavelength filtering lenses. An optical lens may include one or more blue glass lenses, long-wavelength absorbing lenses, or long-wavelength filtering lenses. For example, an optical lens may include at least one blue glass lens, at least two blue glass lenses, at least three blue glass lenses, at least four blue glass lenses, or at least five blue glass lenses; an optical lens may include at least one long-wavelength absorbing lens, at least two long-wavelength absorbing lenses, at least three long-wavelength absorbing lenses, at least four long-wavelength absorbing lenses, or at least five long-wavelength absorbing lenses; an optical lens may include at least one long-wavelength filtering lens, at least two long-wavelength filtering lenses, at least three long-wavelength filtering lenses, at least four long-wavelength filtering lenses, or at least five long-wavelength filtering lenses.

[0044] The optical lens described in this disclosure has an object-side surface and an image-side surface. The surface shape of the object-side surface of the optical lens can be spherical or aspherical, and the surface shape of the image-side surface of the optical lens can be spherical or aspherical.

[0045] The optical lenses described in this disclosure can be made of plastic or glass, and blue glass material can be added to glass lenses to form blue glass lenses, or long-wavelength absorbing materials can be added to plastic lenses to form long-wavelength absorbing lenses. When the optical lens is made of plastic, it can contain polyacrylic acid (PMMA), polystyrene (PS), polycarbonate (PC), cyclic olefin polymer (COP), cyclic olefin copolymer (COC), polyetherimide (PEI), and polyester resins (OKP-4 or OKP-4HT).

[0046] The optical path of the optical lens described in this disclosure refers to the straight-line distance between the principal ray (R1 ray) of the field of view and the point of incidence and exit of the optical lens. The field of view for calculating the optical path is obtained by dividing the 0.0 field of view (0.0 Field) to the 1.0 field of view (1.0 Field) into 50 equal parts, resulting in 0 F, 0.02 F, 0.04 F, 0.06 F, 0.08 F, 0.10 F, 0.12 F, 0.14 F, 0.16 F, 0.18 F, 0.20 F, 0.22 F, 0.24 F, 0.26 F, 0.28 F, 0.30 F, 0.32 F, 0.34 F, 0.36 F, 0.38 F, 0.40 F, 0.42 F, 0.44 F, 0.46 F, 0.48 F, 0.50 F, 0.52 F, 0.54 F, 0.56 F, and 0.56 F. There are 51 fields of view, including F, 0.58 F, 0.60 F, 0.62 F, 0.64 F, 0.66 F, 0.68 F, 0.70 F, 0.72 F, 0.74 F, 0.76 F, 0.78 F, 0.80 F, 0.82 F, 0.84 F, 0.86 F, 0.88 F, 0.90 F, 0.92 F, 0.94 F, 0.96 F, 0.98 F, and 1.0 F. The five equally divided fields of view refer to 0.0 F, 0.2 F, 0.4 F, 0.6 F, 0.8 F, and 1.0 F. The optical path length of the principal rays of these five equally divided fields of view on the optical lens is the same as the optical path length of the principal rays of these five equally divided fields of view on the optical lens. Fb6 satisfies the condition when a single optical lens simultaneously satisfies the condition for CPB / CP0 in five fields of view: 0.2 F, 0.4 F, 0.6 F, 0.8 F, and 1.0 F.

[0047] The blue glass lens of the optical lens described in this disclosure refers to an optical lens in which blue glass material is added to the material. The blue glass material can mainly absorb light with wavelengths above 600 nm. The blue glass lens can be the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth optical lenses in the optical lens. The composition of the blue glass material can include phosphorus ions (P5+ or P3+), aluminum ions (Al3+), antimony ions (Sb5+ or Sb3+), copper ions (Cu2+), magnesium ions (Mg2+), calcium ions (Ca2+), strontium ions (Sr2+), barium ions (Ba2+), zinc ions (Zn2+), lithium ions (Li+), sodium ions (Na+), potassium ions (K+), phosphate ions (PO4 3-), or fluorine ions (F-), etc., or the composition of the blue glass material can include inorganic compounds composed of the aforementioned ions.

[0048] The long-wavelength absorbing lens of the optical lens described in this disclosure refers to an optical lens in which a long-wavelength absorbing material is added to the material. The long-wavelength absorbing material is an organic compound that can mainly absorb light with a wavelength of 600 nm or higher. The long-wavelength absorbing lens can be the first optical lens, the second optical lens, the third optical lens, the fourth optical lens, the fifth optical lens, the sixth optical lens, the seventh optical lens, the eighth optical lens, the ninth optical lens, and the tenth optical lens in the optical lens.

[0049] The long-wavelength filtering lens of the optical lens described in this disclosure refers to an optical lens with a long-wavelength filtering coating on its object-side or image-side surface. The long-wavelength filtering coating mainly reduces the transmittance of light with wavelengths above 600 nm. The long-wavelength filtering lens can be the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, or tenth optical lens in the optical lens.

[0050] The long-wavelength filtering coating described in this disclosure can be disposed on at least one of the object-side and image-side surfaces of any optical lens in an optical lens. Specifically, it can be disposed on the object-side and image-side surfaces of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth optical lenses. The long-wavelength filtering coating can further be disposed on the object-side or image-side surface of a blue glass lens; therefore, the long-wavelength filtering lens and the blue glass lens can be the same lens. The long-wavelength filtering coating can further be disposed on the object-side or image-side surface of a long-wavelength absorbing lens; therefore, the long-wavelength filtering lens and the long-wavelength absorbing lens can be the same lens. Long-wavelength filtering coatings can be simultaneously applied to both the object-side and image-side surfaces of an optical lens. They can also be applied to the object-side and image-side surfaces of different optical lenses simultaneously. Furthermore, the number and thickness of the layers on the object-side and image-side surfaces are interchangeable. Optical lenses with long-wavelength filtering coatings applied to different sides exhibit less deformation compared to those with long-wavelength filtering coatings applied to the same side. For example, long-wavelength filtering coatings can be applied to the image-side surface of a first optical lens and the object-side surface of a second optical lens; long-wavelength filtering coatings can be applied to the object-side and image-side surfaces of a second optical lens; long-wavelength filtering coatings can be applied to the object-side and image-side surfaces of a third optical lens and a fourth optical lens. The number of optical lenses with long-wavelength filtering coatings can be one, two, three, four, five, six, seven, eight, nine, or ten. Long-wavelength filtering coatings applied to the object-side and image-side surfaces of optical lenses refer to the coating being applied directly or indirectly to these surfaces. Indirect application means that other types of coatings (such as anti-reflective coatings) or other materials (such as coatings or other materials) exist between the long-wavelength filtering coating and the lens surface. The long-wavelength filtering coating can also be applied to the object-side and image-side surfaces of other optical elements, such as flat glass, protective glass, plastic sheets, glass sheets, or reflective elements. Filtering coatings on other element surfaces can enhance the filtering effect of insufficient wavelengths. Therefore, coatings applied to the surface of optical lenses can be responsible for filtering specific wavelength regions, reducing the number and thickness of coating layers.

[0051] The long-wavelength filtering coating described in this disclosure comprises at least one layer. The first layer of the long-wavelength filtering coating may be located on the side closer to the surface of the optical lens, or it may be located on the side farther from the surface of the optical lens. The long-wavelength filtering coating is composed of alternating stacked high-refractive-index layers and low-refractive-index layers. A high-refractive-index layer is defined as a layer with a higher refractive index than the previous layer, and a low-refractive-index layer is defined as a layer with a lower refractive index than the previous layer. The first layer is defined as a high-refractive-index layer or a low-refractive-index layer by comparing it with the second layer. For example, if the refractive index of the first layer is greater than that of the second layer, the first layer is a high-refractive-index layer; if the refractive index of the first layer is less than that of the second layer, the first layer is a low-refractive-index layer. The total number of long-wavelength filtering coating layers can be the sum of the number of long-wavelength filtering coating layers on the object-side surface and image-side surface of each optical lens. The total thickness of the long-wavelength filtering coating can be calculated by summing the thicknesses of the long-wavelength filtering coating on the object-side and image-side surfaces of each optical lens. Since long-wavelength filtering coatings can be applied to the object-side and image-side surfaces of different optical lenses, the total number and thickness of the long-wavelength filtering coating layers must be calculated based on the actual long-wavelength filtering layers on all optical lenses. (Coating material - wavelength = 587.6) The nanometer (nm) may contain magnesium fluoride (MgF2, 1.3777), silicon dioxide (SiO2, 1.4585), thorium fluoride (ThF4, 1.5125), silicon monoxide (SiO, 1.55), cerium fluoride (CeF3, 1.63), aluminum oxide (Al2O3, 1.7682), yttrium oxide (Y2O3, 1.79), hafnium dioxide (HfO2, 1.8935), zinc oxide (ZnO, 1.9269), and scandium oxide (Sc2O3, 1.9872). Aluminum nitride (AlN, 2.0294), silicon nitride (Si3N4, 2.0381), tantalum pentoxide (Ta2O5, 2.1306), zirconium dioxide (ZrO2, 2.1588), zinc sulfide (ZnS, 2.2719), niobium pentoxide (Nb2O5, 2.3403), titanium dioxide (TiO2, 2.6142), and titanium nitride (TiN, 3.1307) may be used, or they may be a mixture of MgF2 and SiO2 (where the content ratio is such as [SiO2] > [MgF2]).

[0052] The manufacturing technology for the long-wavelength filtration coating described in this disclosure can be achieved using liquid phase coating or vapor phase coating. Liquid phase coating can utilize acid etching, solution deposition, electroplating, anodic oxidation, sol-gel methods, LB films, or liquid phase epitaxy, etc. Vapor phase coating can utilize chemical vapor deposition or physical vapor deposition, etc. If the curvature of the coated lens varies significantly, atomic layer deposition (ALD) is required to achieve optimal film uniformity, ensuring the integrity of the long-wavelength filtration coating's effectiveness.

[0053] The anti-reflective coating described in this disclosure can be applied to the object-side surface or the image-side surface of the optical lens. It can exert excellent anti-reflective effects, reduce the serious reflection problem caused by light entering the lens surface at a large angle, effectively improve the light transmittance of the imaging optical lens, and achieve the best anti-reflective effect.

[0054] The anti-reflective coating described in this disclosure comprises at least one layer, such as alternating stacks of high-refractive-index and low-refractive-index layers, or a subwavelength microstructure, or a combination of high-refractive-index and subwavelength microstructures, or a combination of low-refractive-index and subwavelength microstructures, or a combination of high-refractive-index, low-refractive-index, and subwavelength microstructures. The anti-reflective coating may have a long-wavelength filtering coating on its inner side (adjacent to the substrate). The anti-reflective coating may have a subwavelength microstructure on its outer side (adjacent to air), and the material may be a metal oxide such as aluminum oxide (Al2O3). The subwavelength microstructure of the anti-reflective coating comprises a plurality of pores, and the size of the pores adjacent to the outer side of the anti-reflective coating is larger than the size of the pores adjacent to the inner side of the anti-reflective coating.

[0055] The optimal coating surface shape of the optical lens described in this disclosure is determined based on the horizontal displacement of the optical lens at its maximum effective diameter, the thickness of the optical lens along the optical axis, and the radius of curvature of the optical lens along the optical axis. The field of view from 0.0 to 1.0 is divided into 50 equal parts to obtain 0.0 F, 0.02 F, 0.04 F, 0.06 F, 0.08 F, 0.10 F, 0.12 F, 0.14 F, 0.16 F, 0.18 F, 0.20 F, 0.22 F, 0.24 F, 0.26 F, 0.28 F, 0.30 F, 0.32 F, 0.34 F, 0.36 F, 0.38 F, 0.40 F, 0.42 F, 0.44 F, 0.46 F, 0.48 F, and 0.50 F. The optical lens has 51 fields of view, including F, 0.52 F, 0.54 F, 0.56 F, 0.58 F, 0.60 F, 0.62 F, 0.64 F, 0.66 F, 0.68 F, 0.70 F, 0.72 F, 0.74 F, 0.76 F, 0.78 F, 0.80 F, 0.82 F, 0.84 F, 0.86 F, 0.88 F, 0.90 F, 0.92 F, 0.94 F, 0.96 F, 0.98 F, and 1.0 F. The maximum effective diameter is the highest point through which all rays from these 51 fields of view pass. The direction of horizontal displacement refers to the direction of the optical axis through the optical lens. The horizontal displacement of the maximum effective diameter position refers to the horizontal displacement from the center of the optical lens to the position of the maximum effective diameter. The radius of curvature of the optical lens is calculated by taking two points on the optical lens: the target point and two points 1E-10 mm above and below the target point in the direction perpendicular to the optical axis.

[0056] The transmittance of the optical lens described in this disclosure refers to the transmittance at a 0-degree incident angle, and the transmittance and average transmittance are calculated in 5 nm increments. The wavelength at 50% transmittance of the optical lens refers to the wavelength at 50% transmittance where the transmittance tends to decrease as the wavelength increases.

[0057] The correction technology of optical lenses described in this disclosure, when the material of the optical lens is plastic, easy to cause the face shape change error due to high temperature is too large, especially when the lens thickness is too small, when the number of film layers makes the temperature affect the face shape accuracy more obvious Lens correction techniques such as application of Moldflow analysis methods, curve fitting function methods or wavefront error methods, but not limited to this. Among them, the modulo flow analysis method finds the stereoscopic profile node of the lens surface shrinkage in the Z-axis by modulo flow analysis, converts it into an aspherical curve and then compares the difference with the original curve, while considering the material shrinkage rate and face shape deformation trend. Among them, the curve fitting function method resorts to measuring the surface profile error of the element. Functions such as Exponential or Polynomial, algorithms such as Gauss Newton, Simplex Algorithm or Steepest Descent Method. The wavefront error method uses an interferometer to measure the wavefront error (imaging error) data of the optical system, comprehensively analyze the wavefront error generated by manufacturing assembly with the original design value wavefront error, and then obtain the correction value by optical software optimization.

[0058] The glass plate of the optical lens described herein may be disposed on the object side of the electronic sensor, and an anti-reflective coating can be made on at least one or both surfaces of the object side surface of the glass plate and the image side surface. The glass plate and the electronic sensor may have an air layer or not, and when the optical lens is designed for an optical system with an air layer between the glass plate and the electronic sensor, an anti-reflective coating can be made on at least one or both surfaces of the object side surface of the glass plate and the image side surface. When the optical lens is designed for an optical system without an air layer between the glass plate and the electronic sensor, an anti-reflective coating can be made on the object side surface of the glass plate. At least one or both surfaces of the object-side surface and the image-side surface of the glass plate may have long-wavelength absorbing materials, by which the polymer is disposed on the surface of the glass flat by mixing the long-wavelength absorbing material into the polymer polymer. When the optical lens is designed for an optical system with an air layer between the glass plate and the electronic sensor, a long wavelength absorbing material film layer may be designed on at least one or both surfaces of the object side surface and the image side surface of the glass plate. When the optical lens is designed for an optical system without an air layer between the glass plate and the electronic sensor, the object side surface of the glass plate can be designed with a long-wavelength absorbing material film layer, and further the material of the glass flat can be designed with a long-wavelength absorbing material.

[0059] The microlens of the optical lens described herein can be disposed on the object side of the electronic photosensitive element. The object side surface and image side surface of the microlens can have a long-wavelength absorbing material. The long-wavelength absorbing material is mixed with a polymer and the polymer is disposed on the surface of the microlens, or the polymer is disposed between the microlens and the color filter as a bonding layer, or the long-wavelength absorbing material is mixed and disposed in the color filter. It can be further selected to be disposed in the red filter portion, the green filter portion and the blue filter portion.

[0060] The optical lens configuration described in this disclosure allows the optical element to be placed on the surface of the electronic photosensitive element. Combined with the application of a long-wavelength filtering coating on the surface of the optical lens, this configuration helps the optical lens reduce the angle at which the main ray at the maximum image height field of view is incident on the electronic photosensitive element, thus reducing the back focal length and overall length. To ensure that the refractive indices of the optical element and the electronic photosensitive element are close to or the same, a polymer can be placed between them. This allows light to pass directly through the interface between the glass plate and the electronic photosensitive element without refraction, avoiding further refraction and thus preventing a larger incident angle.

[0061] The various technical features in the optical lens disclosed above can be combined and configured to achieve the corresponding effects.

[0062] Another embodiment of this disclosure is to provide an electronic device comprising an optical lens as described above.

[0063] The electronic devices described in this disclosure may be cameras, video cameras, video lenses, mobile phones, tablet computers, laptops, handheld game consoles, home game consoles, automotive devices, vehicle devices, AR glasses, VR glasses, AR head-mounted displays, VR head-mounted displays, etc.

[0064] [First Comparative Example]

[0065] The optical lens of the first comparative example includes at least three optical lenses, and the at least three optical lenses include a first optical lens, a second optical lens and a third optical lens from the object side to the image side of the optical lens.

[0066] The optical lens of the first comparative example does not include a blue glass plate, a long-wavelength filtering plate, a blue glass lens, a long-wavelength absorbing lens, or a long-wavelength filtering lens for filtering out light.

[0067] Please refer to Figure 1 and Table 1A at the same time. Figure 1 is a graph showing the relationship between the transmittance and wavelength of the optical lens of the first comparative example. Table 1A presents the transmittance values ​​of the optical lens of the first comparative example at wavelengths from 400 nm to 1050 nm. Table 1A Wavelength (nm) Penetration rate (%) 400 62.61 405 68.93 410 73.84 415 77.61 420 80.45 425 82.40 430 83.51 435 84.92 440 85.63 445 86.73 450 87.19 455 88.03 460 88.21 465 89.10 470 89.78 475 90.13 480 90.94 485 91.55 490 91.81 495 92.31 500 92.60 505 93.38 510 93.47 515 93.80 520 93.75 525 94.12 530 94.24 535 94.55 540 94.70 545 95.09 550 94.99 555 95.28 560 95.20 565 95.52 570 95.58 575 95.43 580 95.66 585 95.90 590 95.62 595 96.20 600 96.38 605 96.29 610 96.29 615 96.34 620 96.76 625 96.76 630 96.54 635 96.87 640 97.03 645 97.13 650 97.27 655 97.37 660 97.42 665 97.47 670 97.71 675 97.92 680 97.84 685 98.02 690 98.03 695 97.99 700 98.07 705 98.37 710 98.12 715 98.17 720 98.23 725 98.28 730 98.27 735 97.96 740 98.08 745 97.92 750 97.36 755 98.03 760 97.64 765 97.64 770 97.23 775 97.19 780 96.98 785 96.61 790 96.56 795 96.36 800 96.37 805 95.60 810 95.11 815 94.49 820 93.98 825 94.49 830 93.96 835 93.51 840 92.78 845 92.41 850 92.72 855 92.06 860 91.30 865 90.72 870 90.62 875 89.58 880 89.22 885 88.59 890 87.80 895 86.99 900 86.12 905 85.31 910 84.64 915 84.13 920 83.44 925 82.95 930 82.77 935 82.48 940 82.11 945 81.96 950 81.46 955 81.09 960 80.57 965 80.08 970 79.83 975 79.26 980 78.44 985 77.90 990 77.32 995 76.82 1000 76.12 1005 75.51 1010 74.90 1015 74.33 1020 73.53 1025 73.00 1030 72.38 1035 71.80 1040 71.35 1045 70.71 1050 70.43

[0068] Please refer to Table 1B, which presents the parameter values ​​of the optical lens of the first comparative example, where Wt50 is the wavelength of the optical lens at 50% transmittance, T6065 is the average transmittance of the optical lens at wavelengths of 600 nm to 650 nm, T6570 is the average transmittance of the optical lens at wavelengths of 650 nm to 700 nm, T70105 is the average transmittance of the optical lens at wavelengths of 700 nm to 1050 nm, T85 is the transmittance of the optical lens at wavelength of 850 nm, T94 is the transmittance of the optical lens at wavelength of 940 nm, and T105 is the transmittance of the optical lens at wavelength of 1050 nm. Table 1B Wt50 (nm) - T85 (%) 92.72 T6065 (%) 96.70 T94 (%) 82.11 T6570 (%) 97.74 T105 (%) 70.43 T70105 (%) 87.72

[0069] If the parameter definitions in the following embodiments are the same as those in Table 1B, they will not be repeated.

[0070] [Second Comparative Example]

[0071] The optical lens of the second comparative example includes at least three optical lenses, and the at least three optical lenses include a first optical lens, a second optical lens and a third optical lens from the object side to the image side of the optical lens.

[0072] The optical lens of the second comparative example includes a blue glass plate and a long wavelength filtering plate, but does not include a blue glass lens, a long wavelength absorbing lens or a long wavelength filtering lens.

[0073] [First Embodiment]

[0074] The optical lens of the first embodiment includes at least three optical lenses, which include a first optical lens, a second optical lens and a third optical lens from the object side to the image side of the optical lens, and the optical lens of the first embodiment includes a blue glass lens and a long wavelength absorption lens.

[0075] Please refer to Figure 2 and Table 2A at the same time. Figure 2 is a graph showing the relationship between the transmittance and wavelength of the optical lens of the first embodiment. Table 2A presents the transmittance values ​​of the optical lens of the first embodiment at wavelengths from 400 nm to 1050 nm. Table 2A Wavelength (nm) Penetration rate (%) 400 88.08 405 88.54 410 88.48 415 88.54 420 88.73 425 89.18 430 89.32 435 89.13 440 89.18 445 89.29 450 89.73 455 89.88 460 89.49 465 89.80 470 89.78 475 89.61 480 89.79 485 90.01 490 89.82 495 90.03 500 89.95 505 89.77 510 89.62 515 89.23 520 88.79 525 88.47 530 87.69 535 86.97 540 85.93 545 84.69 550 83.40 555 81.50 560 79.56 565 77.36 570 74.76 575 72.04 580 69.00 585 65.81 590 62.30 595 58.77 600 55.16 605 51.51 610 47.56 615 43.85 620 40.10 625 36.53 630 32.97 635 29.61 640 26.46 645 23.52 650 20.77 655 18.21 660 15.88 665 13.92 670 12.19 675 10.62 680 9.19 685 7.90 690 6.85 695 5.90 700 5.09 705 4.42 710 3.84 715 3.29 720 2.86 725 2.50 730 2.21 735 1.93 740 1.69 745 1.51 750 1.35 755 1.21 760 1.08 765 0.99 770 0.90 775 0.83 780 0.78 785 0.71 790 0.68 795 0.62 800 0.63 805 0.56 810 0.59 815 0.54 820 0.54 825 0.52 830 0.49 835 0.52 840 0.52 845 0.64 850 0.00 855 0.00 860 0.01 865 0.47 870 0.00 875 0.12 880 0.36 885 0.00 890 0.18 895 0.20 900 0.32 905 0.25 910 0.27 915 0.34 920 0.34 925 0.44 930 0.43 935 0.52 940 0.58 945 0.61 950 0.75 955 0.74 960 0.88 965 0.78 970 0.98 975 0.93 980 1.22 985 1.24 990 1.35 995 1.45 1000 1.53 1005 1.69 1010 1.83 1015 1.89 1020 2.04 1025 2.19 1030 2.35 1035 2.49 1040 2.70 1045 2.88 1050 2.99

[0076] Please refer to Table 2B, which presents the parameter values ​​of the optical lens of the first embodiment. Table 2B Wt50 (nm) 607 T85 (%) 0.00 T6065 (%) 37.09 T94 (%) 0.58 T6570 (%) 11.50 T105 (%) 2.99 T70105 (%) 1.19

[0077] [Second Embodiment]

[0078] The optical lens of the second embodiment includes at least three optical lenses, which include a first optical lens, a second optical lens and a third optical lens from the object side to the image side of the optical lens, and the optical lens of the second embodiment includes a blue glass lens, a long wavelength absorption lens and a long wavelength filtering lens.

[0079] The long-wavelength filtering lens includes a long-wavelength filtering coating, which can be disposed on the object-side surface or the image-side surface of the long-wavelength filtering lens. The long-wavelength filtering coating includes at least one low-refractive-index film layer and at least one high-refractive-index film layer, and the long-wavelength filtering coating is composed of alternating stacks of high-refractive-index film layers and low-refractive-index film layers.

[0080] Please refer to Figure 3 and Table 3A at the same time. Figure 3 is a graph showing the relationship between the transmittance and wavelength of the optical lens of the second embodiment. Table 3A presents the transmittance values ​​of the optical lens of the second embodiment at wavelengths from 400 nm to 1050 nm. Table 3A Wavelength (nm) Penetration rate (%) 400 3.88 405 26.02 410 81.61 415 91.72 420 93.03 425 91.62 430 92.54 435 95.16 440 95.53 445 95.19 450 95.19 455 95.97 460 96.09 465 96.44 470 96.72 475 95.99 480 95.42 485 96.35 490 96.65 495 96.77 500 95.95 505 95.39 510 96.17 515 96.07 520 94.99 525 93.95 530 93.22 535 92.98 540 92.43 545 91.17 550 89.42 555 87.29 560 85.19 565 83.24 570 80.69 575 77.60 580 74.25 585 71.11 590 67.52 595 63.41 600 58.95 605 54.50 610 50.35 615 46.86 620 43.10 625 39.42 630 35.39 635 31.65 640 28.19 645 25.19 650 22.33 655 19.51 660 17.03 665 14.78 670 12.78 675 11.13 680 9.61 685 8.17 690 7.03 695 5.97 700 4.33 705 2.76 710 1.66 715 0.72 720 0.19 725 0.07 730 0.03 735 0.02 740 0.02 745 0.02 750 0.01 755 0.01 760 0.01 765 0.01 770 0.00 775 0.01 780 0.01 785 0.01 790 0.01 795 0.01 800 0.00 805 0.01 810 0.01 815 0.01 820 0.00 825 0.01 830 0.00 835 0.01 840 0.00 845 0.02 850 0.00 855 0.00 860 0.00 865 0.00 870 0.00 875 0.00 880 0.00 885 0.00 890 0.00 895 0.00 900 0.00 905 0.00 910 0.00 915 0.00 920 0.00 925 0.00 930 0.00 935 0.00 940 0.00 945 0.00 950 0.00 955 0.00 960 0.00 965 0.00 970 0.00 975 0.00 980 0.00 985 0.00 990 0.00 995 0.00 1000 0.00 1005 0.00 1010 0.00 1015 0.00 1020 0.00 1025 0.00 1030 0.00 1035 0.00 1040 0.00 1045 0.00 1050 0.00

[0081] Please refer to Table 3B, which presents the parameter values ​​of the optical lens of the second embodiment. Table 3B Wt50 (nm) 611 T85 (%) 0.00 T6065 (%) 39.63 T94 (%) 0.00 T6570 (%) 12.06 T105 (%) 0.00 T70105 (%) 0.14

[0082] Please refer to Table 3C, which presents details of the long-wavelength filtering coating of the long-wavelength filtering lens of the optical lens of the second embodiment, wherein tLs is the total number of layers of the long-wavelength filtering coating, tTk is the total thickness of the long-wavelength filtering coating, LtTk is the total thickness of the high refractive index film layer, HtTk is the total thickness of the low refractive index film layer, NL is the refractive index of the low refractive index film layer, and NH is the refractive index of the high refractive index film layer. Table 3C tLs 46 LtTk / HtTk 1.61 tTk (nm) 5784 NL 1.46 LtTk (nm) 3571 NH 2.32 HtTk (nm) 2213 NH-NL 0.86

[0083] Please refer to Table 3D again, which shows the details of each layer of the long wavelength filtering coating of the long wavelength filtering lens of the second embodiment, wherein "H" represents a high refractive index film layer and "L" represents a low refractive index film layer. Table 3D Stratification Material Refractive index Thickness (nm) 1 H 2.32 11 2 L 1.46 38 3 H 2.32 114 4 L 1.46 171 5 H 2.32 100.8 6 L 1.46 167 7 H 2.32 111 8 L 1.46 186 9 H 2.32 117 10 L 1.46 190 11 H 2.32 117 12 L 1.46 194 13 H 2.32 118 14 L 1.46 190 15 H 2.32 118 16 L 1.46 194 17 H 2.32 117 18 L 1.46 189 19 H 2.32 117 20 L 1.46 190 21 H 2.32 113 22 L 1.46 170 23 H 2.32 93 24 L 1.46 154 25 H 2.32 92 26 L 1.46 148 27 H 2.32 89 28 L 1.46 143 29 H 2.32 88 30 L 1.46 147 31 H 2.32 86 32 L 1.46 145 33 H 2.32 85 34 L 1.46 144 35 H 2.32 86 36 L 1.46 144 37 H 2.32 86 38 L 1.46 146 39 H 2.32 85 40 L 1.46 147 41 H 2.32 87 42 L 1.46 146 43 H 2.32 92 44 L 1.46 152 45 H 2.32 90 46 L 1.46 75

[0084] The following is a detailed description of the optical lenses of the first to fifth designs, and the optical lenses of the first to fifth designs are optical design states that can be applied to the optical lenses of the first embodiment and the optical lenses of the second embodiment.

[0085] <First Design>

[0086] The optical lens of the first design comprises three optical lenses, which are arranged in order from the object side to the image side as a first optical lens, a second optical lens, and a third optical lens. Each optical lens has an object-side surface facing the object side and an image-side surface facing the image side.

[0087] The first optical lens is made of glass, and is a combination of a blue glass lens and a long-wavelength filtering lens, wherein the long-wavelength filtering lens has a long-wavelength filtering coating, and the long-wavelength filtering coating is disposed on the image-side surface of the long-wavelength filtering lens. The second optical lens is made of plastic, and is a long-wavelength absorbing lens. The third optical lens is made of plastic.

[0088] Please refer to Table 4A, which presents the parameter details of the optical lens of the first design, where L1 to L3 represent the first to third optical lenses respectively, N is the refractive index of the optical lens (wavelength = 587.6 nm), V is the Abbe number of the optical lens (wavelength = 587.6 nm), CT is the center thickness of the optical lens on the optical axis, R1 is the radius of curvature of the object-side surface of the optical lens on the optical axis, YR1 is the maximum effective diameter of the object-side surface of the optical lens, SAGR1 is the horizontal displacement of the maximum effective diameter of the object-side surface of the optical lens, R2 is the radius of curvature of the image-side surface of the optical lens on the optical axis, YR2 is the maximum effective diameter of the image-side surface of the optical lens, SAGR2 is the horizontal displacement of the maximum effective diameter of the image-side surface of the optical lens, F is the total focal length of the optical lens, FOV is the maximum angle of view of the optical lens, TD is the distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens, and ImgH is the maximum image height of the optical lens. Table 4A L1 L2 L3 N 1.59 1.59 1.55 V 61.25 28.21 55.98 CT (mm) 0.23 0.15 0.47 R1 (mm) 1.20 -1.74 0.62 YR1 (mm) 0.34 0.62 1.38 SAGR1 (mm) 0.05 -0.11 0.20 R2 (mm) 5.66 -7.73 1.14 YR2(mm) 0.40 0.74 1.61 SAGR2 (mm) 0.01 -0.07 0.04 F (mm) 1.71 FOV (degrees) 84.78 TD (mm) 1.54 ImgH (mm) 2.06

[0089] If the parameter definitions for the following designs are the same as those in Table 4A, they will not be repeated.

[0090] Please refer to Table 4B, which presents the optical path parameters of the optical lens of the first design. CPmax is the maximum optical path of the principal ray across the entire field of view to the optical lens, CPmin is the minimum optical path of the principal ray across the entire field of view to the optical lens, CPavg is the average optical path of the principal ray across the entire field of view to the optical lens, CPst is the standard deviation of the optical path of the principal ray across the entire field of view to the optical lens, CPB is the optical path of the principal rays of the five equally divided fields of view to the optical lens, and CP0 is the optical path of the principal ray of the 0.0 field of view to the optical lens. Table 4B L1 L2 L3 CPmax (mm) 0.25 0.20 0.52 CPmin (mm) 0.23 0.15 0.41 CPavg (mm) 0.24 0.17 0.48 CPst 0.008 0.013 0.025 Field of view CPB / CP0 0.2 F 1.01 1.05 0.98 0.4 F 1.04 1.11 0.98 0.6 F 1.07 1.13 1.06 0.8 F 1.09 1.20 1.10 1.0 F 1.11 1.33 0.87

[0091] If the parameter definitions for the following designs are the same as those in Table 4B, they will not be repeated.

[0092] Please refer to Table 4C, which details the parameters and setting factors of the optical lenses of the first optical lens design. CTB is the center thickness of the blue glass lens along the optical axis, CTA is the center thickness of the long-wavelength absorbing lens along the optical axis, TD is the distance along the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens, Fb1 is the first setting factor of the blue glass lens, Fb2 is the second setting factor of the blue glass lens, Fb3 is the third setting factor of the blue glass lens, Fb4 is the fourth setting factor of the blue glass lens, and Fb5 is the fifth setting factor of the blue glass lens. Fb6 is the sixth setting factor for the blue glass lens, FBY is the effective diameter setting factor for the blue glass lens, FB is the comprehensive setting factor for the blue glass lens, FA is the main setting factor for the long-wavelength absorbing lens, Fam is the material setting factor for the long-wavelength absorbing lens, FcR1 is the coating setting factor for the object-side surface of the long-wavelength filtering lens, FcR2 is the coating setting factor for the image-side surface of the long-wavelength filtering lens, FbcR1 is the combined setting factor for the object-side surface of the blue glass lens, FbcR2 is the combined setting factor for the image-side surface of the blue glass lens, FOV is the maximum angle of view of the optical lens, and F is the total focal length of the optical lens. Table 4C L1 L2 L3 CTB / CTA 1.52 (CTB+CTA) / TD 0.25 Fb1 = CPmax / CPmin 1.11 1.33 1.27 Fb2 = (CPmax-CPmin) / CT 0.11 0.33 0.23 Fb3 = CPavg / CT 1.05 1.13 1.02 Fb4 = CPst / CT 0.04 0.09 0.05 Fb5 = CT / TD 0.148 0.097 0.304 Fb6 = CPB / CP0 Versions 1.01 to 1.11 1.05~1.33 0.87~1.10 Blue Glass Configuration Evaluation b b b FbY = YR1 / ImgH 0.17 FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)) 4.66 2.91 4.23 FA = LOG(1 / (|(CPavg / CT-1) ×CPst / CT)|) 2.73 1.95 3.03 Long-wavelength absorption configuration evaluation a a a Fam = V / N 38.50 17.76 36.21 FcR1 = |YR1 / SAGR1|×CT / TD×10 10.62 5.40 20.91 Long wavelength filtering configuration evaluation c - c FcR2 = |YR2 / SAGR2|×CT / TD×10 118.81 10.19 139.62 Long wavelength filtering configuration evaluation c c c FbcR1 = |YR1 / SAGR1|×CPavg / CT 7.53 6.25 7.00 FbcR2 = |YR2 / SAGR2|×CPavg / CT 84.22 11.79 46.72 tan(FOV / 2)×F 1.56

[0093] In the first design, the blue glass lens provided with the optical lens is only disclosed as an example. The determination of the placement of the blue glass lens is based on the blue glass configuration evaluation. "b" in Table 4C indicates compliance with the blue glass configuration evaluation. If the optical lens meets the blue glass configuration evaluation, it means that the optical lens meets "0.80 ≤ Fb6 ≤ 1.50", and it can be set as a blue glass lens. In the first design, the long-wavelength absorbing lens provided with the optical lens is only disclosed as an example. The determination of the placement of the long-wavelength absorbing lens is based on the long-wavelength absorption configuration evaluation. "a" in Table 4C indicates compliance with the long-wavelength absorption configuration evaluation. If the optical lens meets the long-wavelength absorption configuration evaluation, it means that the optical lens meets "1.50 ≤ FA", and it can be set as a long-wavelength absorbing lens. In the first design, the long-wavelength filter lens set in the optical lens is only disclosed as an example. The setting of the long-wavelength filter lens is determined based on the long-wavelength filter configuration evaluation. "c" in Table 4C indicates that it meets the long-wavelength filter configuration evaluation. If the optical lens meets the long-wavelength filter configuration evaluation, it means that the object-side surface of the optical lens meets "10.00 ≤ FcR1" or the image-side surface of the optical lens meets "10.00 ≤ FcR2", and it can be set as a long-wavelength filter lens.

[0094] If the parameter definitions for the following designs are the same as those in Table 4C, they will not be repeated. Furthermore, the blue glass lens, long-wavelength absorption lens, and long-wavelength filtering lens settings in the optical lenses of the following designs are only illustrative disclosures. Their settings are based on the evaluation of the blue glass configuration, the evaluation of the long-wavelength absorption configuration, and the evaluation of the long-wavelength filtering configuration. The descriptions of the evaluation of the blue glass configuration, the evaluation of the long-wavelength absorption configuration, and the evaluation of the long-wavelength filtering configuration are also the same as those of the first design, and will not be repeated hereafter.

[0095] <Second Design>

[0096] The optical lens of the second design comprises four optical lenses, which are arranged in order from the object side to the image side as a first optical lens, a second optical lens, a third optical lens, and a fourth optical lens. Each optical lens has an object-side surface facing the object side and an image-side surface facing the image side.

[0097] The first optical lens is made of glass, and is a combination of a blue glass lens and a long-wavelength filtering lens, wherein the long-wavelength filtering lens has a long-wavelength filtering coating, and the long-wavelength filtering coating is disposed on the image-side surface of the long-wavelength filtering lens. The second optical lens is made of plastic, and is a long-wavelength absorbing lens. The third optical lens is made of plastic. The fourth optical lens is made of plastic.

[0098] Please refer to Table 5A, which presents the parameter details of the optical lens of the second design, where L1 to L4 represent the first optical lens to the fourth optical lens, respectively. Table 5A L1 L2 L3 L4 N 1.50 1.67 1.54 1.54 V 81.56 19.45 55.98 55.98 CT (mm) 0.30 0.15 0.26 0.23 R1 (mm) 0.73 -3.44 -1.41 7.64 YR1 (mm) 0.41 0.39 0.62 1.34 SAGR1 (mm) 0.13 -0.06 -0.10 -0.44 R2 (mm) 1.93 -4.59 -0.78 0.81 YR2(mm) 0.37 0.48 0.74 1.56 SAGR2 (mm) 0.03 -0.04 -0.20 -0.36 F (mm) 1.97 FOV (degrees) 90.89 TD (mm) 1.87 ImgH (mm) 2.06

[0099] Please refer to Table 5B, which presents the optical path parameters details of the second-designed optical lens. Table 5B L1 L2 L3 L4 CPmax (mm) 0.34 0.17 0.26 0.55 CPmin (mm) 0.30 0.15 0.19 0.23 CPavg (mm) 0.31 0.15 0.23 0.41 CPst 0.015 0.007 0.024 0.115 Field of view CPB / CP0 0.2 F 1.01 1.01 0.97 1.20 0.4 F 1.04 1.03 0.90 1.70 0.6 F 1.07 1.06 0.82 2.19 0.8 F 1.11 1.10 0.76 2.37 1.0 F 1.15 1.16 0.76 1.86

[0100] Please refer to Table 5C, which presents the parameters of the optical lenses and the details of the setting factors of the optical lens of the second design. Table 5C L1 L2 L3 L4 CTB / CTA 2.03 (CTB+CTA) / TD 0.24 Fb1 = CPmax / CPmin 1.15 1.16 1.34 2.37 Fb2 = (CPmax-CPmin) / CT 0.15 0.16 0.25 1.37 Fb3 = CPavg / CT 1.06 1.06 0.87 1.79 Fb4 = CPst / CT 0.05 0.05 0.09 0.50 Fb5 = CT / TD 0.158 0.078 0.139 0.123 Fb6 = CPB / CP0 1.01~1.15 1.01~1.16 0.76~0.97 1.20~2.37 Blue Glass Configuration Evaluation b b - - FbY = YR1 / ImgH 0.20 FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)) 4.15 4.12 2.98 0.13 FA = LOG(1 / (|(CPavg / CT-1) ×CPst / CT)|) 2.52 2.55 1.91 0.40 Long-wavelength absorption configuration evaluation a a a - Fam = V / N 54.48 11.65 36.26 36.26 FcR1 = |YR1 / SAGR1|×CT / TD×10 5.09 5.42 9.05 3.78 Long wavelength filtering configuration evaluation - - - - FcR2 = |YR2 / SAGR2|×CT / TD×10 19.42 9.04 5.22 5.39 Long wavelength filtering configuration evaluation c - - - FbcR1 = |YR1 / SAGR1|×CPavg / CT 3.42 7.37 5.63 5.49 FbcR2 = |YR2 / SAGR2|×CPavg / CT 13.04 12.30 3.25 7.83 tan(FOV / 2)×F 2.00

[0101] <Third Design>

[0102] The optical lens of the third design comprises four optical lenses, which are arranged in order from the object side to the image side as the first optical lens, the second optical lens, the third optical lens, and the fourth optical lens. Each optical lens has an object-side surface facing the object side and an image-side surface facing the image side.

[0103] The first optical lens is made of glass, and is a combination of a blue glass lens and a long-wavelength filtering lens, wherein the long-wavelength filtering lens has a long-wavelength filtering coating, and the long-wavelength filtering coating is disposed on the image-side surface of the long-wavelength filtering lens. The second optical lens is made of plastic, and is a long-wavelength absorbing lens. The third optical lens is made of plastic. The fourth optical lens is made of plastic.

[0104] Please refer to Table 6A, which presents the parameter details of the optical lens of the third design, where L1 to L4 represent the first to fourth optical lenses respectively. Table 6A L1 L2 L3 L4 N 1.50 1.68 1.55 1.55 V 81.56 19.45 55.98 55.98 CT (mm) 0.31 0.14 0.25 0.25 R1 (mm) 0.82 -3.47 -1.78 2.23 YR1 (mm) 0.41 0.42 0.57 1.31 SAGR1 (mm) 0.11 -0.06 -0.09 -0.41 R2 (mm) 3.00 -9.20 -0.80 0.60 YR2(mm) 0.40 0.49 0.70 1.55 SAGR2 (mm) 0.01 -0.03 -0.18 -0.32 F (mm) 1.96 FOV (degrees) 90.90 TD (mm) 1.84 ImgH (mm) 2.06

[0105] Please refer to Table 6B, which presents details of the optical path parameters of the optical lens of the third design. Table 6B L1 L2 L3 L4 CPmax (mm) 0.36 0.17 0.25 0.57 CPmin (mm) 0.31 0.14 0.18 0.25 CPavg (mm) 0.33 0.15 0.21 0.44 CPst 0.016 0.009 0.025 0.116 Field of view CPB / CP0 0.2 F 1.01 1.01 0.97 1.19 0.4 F 1.04 1.04 0.90 1.64 0.6 F 1.08 1.09 0.81 2.12 0.8 F 1.12 1.14 0.74 2.27 1.0 F 1.16 1.21 0.75 1.80

[0106] Please refer to Table 6C, which presents the parameters of the optical lenses and the details of the setting factors of the optical lens of the third design. Table 6C L1 L2 L3 L4 CTB / CTA 2.21 (CTB+CTA) / TD 0.24 Fb1 = CPmax / CPmin 1.16 1.21 1.36 2.28 Fb2 = (CPmax-CPmin) / CT 0.16 0.21 0.27 1.28 Fb3 = CPavg / CT 1.06 1.08 0.86 1.74 Fb4 = CPst / CT 0.05 0.07 0.10 0.46 Fb5 = CT / TD 0.168 0.076 0.134 0.136 Fb6 = CPB / CP0 1.01~1.16 1.01~1.21 0.74~0.97 January 19th to February 27th Blue Glass Configuration Evaluation b b - - FbY = YR1 / ImgH 0.20 FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)) 4.10 3.66 2.88 0.25 FA = LOG(1 / (|(CPavg / CT-1) ×CPst / CT)|) 2.49 2.30 1.86 0.46 Long-wavelength absorption configuration evaluation a a a - Fam = V / N 54.44 11.61 36.21 36.21 FcR1 = |YR1 / SAGR1|×CT / TD×10 6.38 5.64 8.96 4.35 Long wavelength filtering configuration evaluation - - - - FcR2 = |YR2 / SAGR2|×CT / TD×10 51.73 12.40 5.09 6.60 Long wavelength filtering configuration evaluation c c - - FbcR1 = |YR1 / SAGR1|×CPavg / CT 4.04 8.00 5.73 5.58 FbcR2 = |YR2 / SAGR2|×CPavg / CT 32.75 17.60 3.26 8.47 tan(FOV / 2)×F 1.99

[0107] <Fourth Design>

[0108] The optical lens of the fourth design comprises five optical lenses, which are arranged in order from the object side to the image side as the first optical lens, the second optical lens, the third optical lens, the fourth optical lens, and the fifth optical lens. Each optical lens has an object-side surface facing the object side and an image-side surface facing the image side.

[0109] The first optical lens is made of glass, and is a combination of a blue glass lens and a long-wavelength filtering lens, wherein the long-wavelength filtering lens has a long-wavelength filtering coating, and the long-wavelength filtering coating is disposed on the image-side surface of the long-wavelength filtering lens. The second optical lens is made of plastic. The third optical lens is made of plastic, and is a long-wavelength absorbing lens. The fourth optical lens is made of plastic. The fifth optical lens is made of plastic.

[0110] Please refer to Table 7A, which presents the parameter details of the optical lens of the fourth design, where L1 to L5 represent the first to fifth optical lenses respectively. Table 7A L1 L2 L3 L4 L5 N 1.59 1.68 1.55 1.55 1.54 V 68.62 19.45 55.98 55.98 55.96 CT (mm) 0.42 0.18 0.24 0.61 0.36 R1 (mm) 1.22 5.14 2.48<了 -12.86 6.40 YR1 (mm) 0.45 0.55 J0.69 0.91 1.37 SAGR1 (mm) 0.08 0.03 -0.02 -0.16 -0. J32 R2 (mm) 110.72 1.89 2.30 -0.62 0.57 YR2(mm) 0.53 0.58 0.81 1.10 1.74 SAGR2 (mm) -0.02 0.11 -0.06 -0.51 [ -0.10 F (mm) 2.07 FOV (degrees) 81.63 TD (mm) It should be noted that there is an error in the original text where "了0001956" appears. It is assumed to be a typo and should be "0001956". Also, "J0.69" and "-0. J32" are assumed to be typos and should be "0.69" and "-0.32" respectively. The translated text above is based on these assumptions. If the original text has other specific meanings for these incorrect expressions, the translation may need to be adjusted accordingly. 2.37 ImgH (mm) 2.06

[0111] Please refer to Table 7B, which presents details of the optical path parameters of the optical lens in the fourth design. Table 7B L1 L2 L3 L4 L5 CPmax (mm) 0.46 0.21 0.26 0.61 0.83 CPmin (mm) 0.42 0.18 0.24 0.30 0.36 CPavg (mm) 0.44 0.19 0.25 0.43 0.63 CPst 0.014 0.010 0.009 0.115 0.173 Field of view CPB / CP0 0.2 F 1.01 1.01 1.02 0.92 1.17 0.4 F 1.03 1.04 1.05 0.75 1.61 0.6 F 1.05 1.09 1.09 0.58 2.09 0.8 F 1.08 1.13 1.11 0.49 2.31 1.0 F 1.10 1.17 1.07 0.50 2.05

[0112] Please refer to Table 7C, which presents the parameters of the optical lenses and the details of the setting factors for the optical lens of the fourth design. Table 7C L1 L2 L3 L4 L5 CTB / CTA 1.76 (CTB+CTA) / TD 0.28 Fb1 = CPmax / CPmin 1.10 1.17 1.11 2.06 2.31 Fb2 = (CPmax-CPmin) / CT 0.10 0.17 0.11 0.51 1.31 Fb3 = CPavg / CT 1.04 1.07 1.06 0.70 1.75 Fb4 = CPst / CT 0.03 0.06 0.04 0.19 0.48 Fb5 = CT / TD 0.177 0.076 0.101 0.259 0.151 Fb6 = CPB / CP0 1.01~ 1.10 1.01~ 1.17 1.02~ 1.11 0.49~ 0.92 1.17~ 2.31 Blue Glass Configuration Evaluation b b b - - FbY = YR1 / ImgH 0.22 FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)) 4.78 3.90 4.57 1.51 0.21 FA = LOG(1 / (|(CPavg / CT-1) ×CPst / CT)|) 2.81 2.39 2.63 1.24 0.44 Long-wavelength absorption configuration evaluation a a a - - Fam = V / N 43.05 11.61 36.21 36.21 36.43 FcR1 = |YR1 / SAGR1|×CT / TD×10 9.59 14.91 34.44 14.88 6.44 Long wavelength filtering configuration evaluation - c c c - FcR2 = |YR2 / SAGR2|×CT / TD×10 42.75 3.98 14.72 5.58 26.38 Long wavelength filtering configuration evaluation c - c - c FbcR1 = |YR1 / SAGR1|×CPavg / CT 5.65 21.14 36.36 4.02 7.44 FbcR2 = |YR2 / SAGR2|×CPavg / CT 25.17 5.64 15.54 1.51 30.47 tan(FOV / 2)×F 1.78

[0113] <Fifth Design>

[0114] The fifth optical lens design comprises five optical lenses, which are arranged in order from the object side to the image side as the first optical lens, the second optical lens, the third optical lens, the fourth optical lens, and the fifth optical lens. Each optical lens has an object-side surface facing the object side and an image-side surface facing the image side.

[0115] The first optical lens is made of glass. The second optical lens is made of plastic and is a long-wavelength absorbing lens. The third optical lens is made of glass and is a combination of a blue glass lens and a long-wavelength filtering lens, wherein the long-wavelength filtering lens has a long-wavelength filtering coating, and the long-wavelength filtering coating is disposed on the image-side surface of the long-wavelength filtering lens. The fourth optical lens is made of plastic. The fifth optical lens is made of plastic.

[0116] Please refer to Table 8A, which presents the parameter details of the optical lens of the fifth design, where L1 to L5 represent the first optical lens to the fifth optical lens, respectively. Table 8A L1 L2 L3 L4 L5 N 1.59 1.68 1.59 1.55 1.54 V 68.62 19.45 61.25 55.98 55.96 CT (mm) 0.46 0.17 0.23 0.55 0.36 R1 (mm) 1.21 3.40 2.74 -63.95 5.80 YR1 (mm) 0.46 0.56 0.67 0.92 1.33 SAGR1 (mm) 0.09 0.05 -0.02 -0.14 -0.30 R2 (mm) 14.96 1.75 2.57 -0.66 0.55 YR2(mm) 0.54 0.58 0.78 1.10 1.73 SAGR2 (mm) -0.02 0.12 -0.05 -0.46 -0.07 F (mm) 2.07 FOV (degrees) 79.98 TD (mm) 2.34 ImgH (mm) 2.06

[0117] Please refer to Table 8B, which presents details of the optical path parameters of the optical lens in the fifth design. Table 8B L1 L2 L3 L4 L5 CPmax (mm) 0.51 0.20 0.26 0.55 0.85 CPmin (mm) 0.46 0.17 0.23 0.26 0.36 CPavg (mm) 0.48 0.18 0.25 0.38 0.63 CPst 0.015 0.009 0.009 0.107 0.181 Field of view CPB / CP0 0.2 F 1.01 1.01 1.01 0.91 1.17 0.4 F 1.03 1.04 1.05 0.73 1.62 0.6 F 1.05 1.09 1.08 0.56 2.13 0.8 F 1.08 1.13 1.10 0.48 2.37 1.0 F 1.10 1.17 1.08 0.50 2.11

[0118] Please refer to Table 8C, which presents the parameters of the optical lenses and the details of the setting factors for the optical lens of the fifth design. Table 8C L1 L2 L3 L4 L5 CTB / CTA 1.39 (CTB+CTA) / TD 0.17 Fb1 = CPmax / CPmin 1.10 1.17 1.10 2.10 2.37 Fb2 = (CPmax-CPmin) / CT 0.10 0.17 0.10 0.52 1.37 Fb3 = CPavg / CT 1.04 1.07 1.06 0.69 1.77 Fb4 = CPst / CT 0.03 0.06 0.04 0.19 0.51 Fb5 = CT / TD 0.195 0.072 0.099 0.236 0.152 Fb6 = CPB / CP0 1.01~ 1.10 1.01~ 1.17 1.01~ 1.10 0.48~ 0.91 1.17~ 2.37 Blue Glass Configuration Review b b b - - FbY = YR1 / ImgH 0.32 FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)) 4.81 3.92 4.70 1.46 0.13 FA = LOG(1 / (|(CPavg / CT-1) ×CPst / CT)|) 2.82 2.39 2.69 1.22 0.41 Long-wavelength absorption configuration evaluation a a a - - Fam = V / N 43.05 11.61 38.50 36.21 36.43 FcR1 = |YR1 / SAGR1|×CT / TD×10 10.36 8.94 28.74 15.14 6.75 Long wavelength filtering configuration evaluation c - c c - FcR2 = |YR2 / SAGR2|×CT / TD×10 70.08 3.49 14.89 5.67 39.42 Long wavelength filtering configuration evaluation c - c - c FbcR1 = |YR1 / SAGR1|×CPavg / CT 5.54 13.37 30.53 4.41 7.86 FbcR2 = |YR2 / SAGR2|×CPavg / CT 37.48 5.22 15.82 1.65 45.88 tan(FOV / 2)×F 1.73

[0119] Although the present disclosure has been disclosed above with reference to embodiments, it is not intended to limit the present disclosure. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the appended claims. [Simplified Explanation of the Diagram]

[0008] To make the above and other objects, features, advantages and embodiments of this disclosure more apparent and understandable, the accompanying drawings are described as follows: Figure 1 is a graph showing the relationship between transmittance and wavelength of the optical lens of the first comparative example; Figure 2 is a graph showing the relationship between transmittance and wavelength of the optical lens of the first embodiment; and Figure 3 is a graph showing the relationship between transmittance and wavelength of the optical lens of the second embodiment.

Claims

1. An optical lens, comprising: at least three optical lenses, wherein the optical lens includes a first optical lens, a second optical lens, and a third optical lens from the object side to the image side; wherein, The at least three optical lenses include a blue glass lens and a long-wavelength absorbing lens. The sixth setting factor of the blue glass lens is Fb6. The center thickness of the blue glass lens on the optical axis is CTB. The center thickness of the long-wavelength absorbing lens on the optical axis is CTA. The distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens is TD. Fb6 = CPB / CP0, where CPB is the optical path length of the principal rays of the five equally divided fields of view (0.2, 0.4, 0.6, 0.8, and 1.0) through the blue glass lens, and CP0 is the optical path length of the principal ray of the 0.0 field of view through the blue glass lens. It satisfies the following conditions: 0.85 ≤ Fb6 ≤ 1.50; and 0.15 ≤ (CTB+CTA) / TD ≤ 0.

40.

2. The optical lens as claimed in claim 1, wherein the first setting factor of the blue glass lens is Fb1, Fb1 = CPmax / CPmin, where CPmax is the maximum optical path of the principal ray in the entire field of view in the blue glass lens, and CPmin is the minimum optical path of the principal ray in the entire field of view in the blue glass lens, which satisfies the following condition: Fb1 ≤ 1.

50.

3. The optical lens as claimed in claim 1, wherein the second setting factor of the blue glass lens is Fb2, Fb2 = (CPmax-CPmin) / CT, where CPmax is the maximum optical path of the principal ray in the entire field of view in the blue glass lens, CPmin is the minimum optical path of the principal ray in the entire field of view in the blue glass lens, and CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following condition: Fb2 ≤ 0.

30.

4. The optical lens as claimed in claim 1, wherein the third setting factor of the blue glass lens is Fb3, Fb3 = CPavg / CT, where CPavg is the average optical path length of the principal ray in the entire field of view through the blue glass lens, and CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following condition: 0.50 ≤ Fb3 ≤ 2.

00.

5. The optical lens as claimed in claim 1, wherein the fourth setting factor of the blue glass lens is Fb4, Fb4 = CPst / CT, where CPst is the standard deviation of the optical path of the principal ray in the entire field of view through the blue glass lens, and CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following condition: Fb4 ≤ 0.

10.

6. The optical lens as claimed in claim 1, wherein the fifth setting factor of the blue glass lens is Fb5, Fb5 = CT / TD, where CT is the center thickness of the blue glass lens on the optical axis, and TD is the distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens, which satisfies the following condition: 0.05 ≤ Fb5 ≤ 0.

40.

7. The optical lens as claimed in claim 1, wherein the effective diameter setting factor of the blue glass lens is FbY, FbY = YR1 / ImgH, where YR1 is the maximum effective diameter of the object-side surface of the blue glass lens and ImgH is the maximum image height of the optical lens, which satisfies the following condition: FbY ≤ 0.

27.

8. The optical lens as described in claim 1, wherein the overall setting factor of the blue glass lens is FB, FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)), where Fb1 is the first setting factor of the blue glass lens, Fb2 is the second setting factor of the blue glass lens, Fb3 is the third setting factor of the blue glass lens, Fb4 is the fourth setting factor of the blue glass lens, CPmax is the maximum optical path of the principal ray in the entire field of view through the blue glass lens, CPmin is the minimum optical path of the principal ray in the entire field of view through the blue glass lens, CT is the center thickness of the blue glass lens on the optical axis, CPavg is the average optical path of the principal ray in the entire field of view through the blue glass lens, CPst is the standard deviation of the optical path of the principal ray in the entire field of view through the blue glass lens, Fb1 = CPmax / CPmin, Fb2 = (CPmax-CPmin) / CT, Fb3 = CPavg / CT, Fb4 = CPst / CT, which satisfies the following conditions: 1.00 ≤ FB.

9. The optical lens as claimed in claim 1, wherein the principal setting factor of the long-wavelength absorbing lens is FA, FA = LOG(1 / (|(CPavg / CT-1)×CPst / CT)|), where CPavg is the average optical path length of the principal ray in the entire field of view through the long-wavelength absorbing lens, CPst is the standard deviation of the optical path length of the principal ray in the entire field of view through the long-wavelength absorbing lens, and CT is the center thickness of the long-wavelength absorbing lens on the optical axis, which satisfies the following condition: 1.50 ≤ FA.

10. The optical lens as claimed in claim 9, wherein the material setting factor of the long-wavelength absorbing lens is Fam, Fam = V / N, where V is the Abbe number of the long-wavelength absorbing lens and N is the refractive index of the long-wavelength absorbing lens, which satisfies the following condition: 30.00 ≤ Fam ≤ 40.

00.

11. The optical lens as claimed in claim 1, wherein the center thickness of the blue glass lens on the optical axis is CTB and the center thickness of the long-wavelength absorbing lens on the optical axis is CTA, which satisfies the following condition: 1.20 ≤ CTB / CTA.

12. The optical lens as claimed in claim 1, wherein the wavelength of the optical lens at 50% transmittance is Wt50, which satisfies the following condition: 600 nm ≤ Wt50 ≤ 650 nm.

13. The optical lens as claimed in claim 12, wherein the average transmittance of the optical lens at wavelengths from 600 nm to 650 nm is T6065, which satisfies the following condition: T6065 ≤ 50.00%.

14. The optical lens as claimed in claim 13, wherein the average transmittance of the optical lens at wavelengths from 650 nm to 700 nm is T6570, which satisfies the following condition: T6570 ≤ 20.00%.

15. The optical lens as claimed in claim 14, wherein the average transmittance of the optical lens at wavelengths from 700 nm to 1050 nm is T70105, which satisfies the following condition: T70105 ≤ 3.00%.

16. The optical lens as claimed in claim 15, wherein the transmittance of the optical lens at a wavelength of 850 nm is T85, which satisfies the following condition: T85 ≤ 2.50%.

17. The optical lens as claimed in claim 15, wherein the transmittance of the optical lens at a wavelength of 940 nm is T94, which satisfies the following condition: T94 ≤ 2.50%.

18. The optical lens as claimed in claim 15, wherein the transmittance of the optical lens at a wavelength of 1050 nm is T105, which satisfies the following condition: T105 ≤ 2.50%.

19. An electronic device comprising: an optical lens as described in claim 1.

20. An optical lens comprising: at least three optical lenses, wherein the optical lens includes a first optical lens, a second optical lens, and a third optical lens from the object side to the image side; wherein, The at least three optical lenses include a blue glass lens, a long-wavelength filter lens, and a long-wavelength filter coating. The long-wavelength filter coating includes at least one low-refractive-index layer and at least one high-refractive-index layer, and the long-wavelength filter coating consists of alternating stacks of the high-refractive-index layer and the low-refractive-index layer. The sixth setting factor of the blue glass lens is Fb6, the setting factor of the coating on the object-side surface of the long-wavelength filter lens is FcR1, and the setting factor of the coating on the image-side surface of the long-wavelength filter lens is FcR2. Fb6 = CPB / CP0, FcR1 = |YR1 / SAGR1|×CT / TD×10, FcR2 = |YR2 / SAGR2|×CT / TD×10, where CPB is the optical path length of the principal rays of the five equally divided fields of view (0.2, 0.4, 0.6, 0.8, and 1.0) in the blue glass lens, CP0 is the optical path length of the principal ray of the 0.0 field of view in the blue glass lens, YR1 is the maximum effective diameter of the object-side surface of the long-wavelength filter lens, SAGR1 is the horizontal displacement of the maximum effective diameter of the object-side surface of the long-wavelength filter lens, YR2 is the maximum effective diameter of the image-side surface of the long-wavelength filter lens, SAGR2 is the horizontal displacement of the maximum effective diameter of the image-side surface of the long-wavelength filter lens, CT is the center thickness of the long-wavelength filter lens on the optical axis, and TD is the distance on the optical axis from the object-side surface of the first optical lens to the image-side surface of the last optical lens, which satisfies the following conditions: 0.80 ≤ Fb6 ≤ 1.40; and at least one of 10.00 ≤ FcR1 and 10.00 ≤ FcR2.

21. The optical lens as claimed in claim 20, wherein the blue glass lens and the long-wavelength filter lens are the same optical lens, the merging factor of the object-side surface of the blue glass lens is FbcR1, the merging factor of the image-side surface of the blue glass lens is FbcR2, FbcR1 = |YR1 / SAGR1|×CPavg / CT, FbcR2 = |YR2 / SAGR2|×CPavg / CT, where CPavg is the average optical path length of the principal ray in the entire field of view through the blue glass lens, and CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following conditions: 6.00 ≤ FbcR1; or 6.00 ≤ FbcR2.

22. The optical lens as claimed in claim 20, wherein the first setting factor of the blue glass lens is Fb1, Fb1 = CPmax / CPmin, where CPmax is the maximum optical path of the principal ray in the entire field of view in the blue glass lens, and CPmin is the minimum optical path of the principal ray in the entire field of view in the blue glass lens, which satisfies the following condition: Fb1 ≤ 1.

40.

23. The optical lens as claimed in claim 20, wherein the second setting factor of the blue glass lens is Fb2, Fb2 = (CPmax-CPmin) / CT, where CPmax is the maximum optical path of the principal ray in the entire field of view in the blue glass lens, CPmin is the minimum optical path of the principal ray in the entire field of view in the blue glass lens, and CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following condition: Fb2 ≤ 0.

25.

24. The optical lens as claimed in claim 20, wherein the third setting factor of the blue glass lens is Fb3, Fb3 = CPavg / CT, where CPavg is the average optical path length of the principal ray across the entire field of view through the blue glass lens, and CT is the center thickness of the blue glass lens along the optical axis, which satisfies the following condition: 0.60 ≤ Fb3 ≤ 1.

80.

25. The optical lens as claimed in claim 20, wherein the fourth setting factor of the blue glass lens is Fb4, Fb4 = CPst / CT, where CPst is the standard deviation of the optical path of the principal ray in the entire field of view through the blue glass lens, and CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following condition: Fb4 ≤ 0.

08.

26. The optical lens as claimed in claim 20, wherein the fifth setting factor of the blue glass lens is Fb5, Fb5 = CT / TD, where CT is the center thickness of the blue glass lens on the optical axis, which satisfies the following condition: 0.08 ≤ Fb5 ≤ 0.

30.

27. The optical lens as claimed in claim 20, wherein the effective diameter setting factor of the blue glass lens is FbY, FbY = YR1 / ImgH, where YR1 is the maximum effective diameter of the object-side surface of the blue glass lens and ImgH is the maximum image height of the optical lens, which satisfies the following condition: 0 ≤ FbY ≤ 0.

26.

28. The optical lens as claimed in claim 20, wherein the overall setting factor of the blue glass lens is FB, FB = LOG(1 / (|Fb1-1|×|Fb3-1|×Fb2×Fb4)), where Fb1 is the first setting factor of the blue glass lens, Fb2 is the second setting factor of the blue glass lens, Fb3 is the third setting factor of the blue glass lens, Fb4 is the fourth setting factor of the blue glass lens, CPmax is the maximum optical path of the principal ray in the entire field of view through the blue glass lens, CPmin is the minimum optical path of the principal ray in the entire field of view through the blue glass lens, CT is the center thickness of the blue glass lens on the optical axis, CPavg is the average optical path of the principal ray in the entire field of view through the blue glass lens, CPst is the standard deviation of the optical path of the principal ray in the entire field of view through the blue glass lens, Fb1 = CPmax / CPmin, Fb2 = (CPmax-CPmin) / CT, Fb3 = CPavg / CT, Fb4 = CPst / CT, which satisfies the following conditions: 2.00 ≤ FB ≤ ∞.

29. The optical lens as claimed in claim 20, wherein the total focal length of the optical lens is F and the maximum angle of view of the optical lens is FOV, which satisfies the following condition: tan(FOV / 2)×F ≤ 4.

0.

30. The optical lens as claimed in claim 20, wherein the total number of layers of the long-wavelength filtering coating is tLs, which satisfies the following condition: 20 ≤ tLs ≤ 60.

31. The optical lens as claimed in claim 30, wherein the total thickness of the long-wavelength filtering coating is tTk, which satisfies the following condition: 4500 nm ≤ tTk ≤ 8000 nm.

32. The optical lens of claim 31, wherein the total thickness of the high refractive index film is HtTk and the total thickness of the low refractive index film is LtTk, which satisfy the following condition: 1.30 ≤ LtTk / HtTk ≤ 1.

80.

33. The optical lens as claimed in claim 32, wherein the high refractive index film has a refractive index of NH and the low refractive index film has a refractive index of NL, which satisfy the following condition: 0.80 ≤ NH-NL ≤ 1.

50.

34. An electronic device comprising: an optical lens as described in claim 20.

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