TWI695186B - Optical imaging lens - Google Patents

Abstract

An optical imaging lens including a first lens element to a sixth lens element arranged in sequence from an object side to an image side along an optical axis is provided. Each of the first lens element to the sixth lens element includes an object-side surface and an image-side surface. The first lens element is arranged to be a lens element having refracting power in a first order from the object side to the image side. The second lens element is arranged to be a lens element having refracting power in a second order from the object side to the image side. The third lens element is arranged to be a lens element having refracting power in a third order from the object side to the image side. The fourth lens element is arranged to be a lens element having refracting power in a first order from an aperture to the image side. The fifth lens element is arranged to be a lens element having refracting power in a second order from the aperture to the image side. The sixth lens element is arranged to be a lens element having refracting power in a third order from the aperture to the image side.

Description

Optical imaging lens

The invention generally relates to an optical imaging lens. Specifically, the present invention particularly refers to an optical imaging lens mainly used for shooting images and videos, and can be applied to portable electronic products, such as: mobile phones, cameras, tablets, personal digital assistants (Personal Digital Assistant) , PDA), car camera, virtual reality tracker (Virtual Reality (VR) Tracker) and other devices.

The specifications of consumer electronic products are changing rapidly, and the pace of light and thin has not been slowed down. Therefore, the key components of electronic products such as optical lenses must also continue to be upgraded to meet the needs of consumers. In addition to the imaging quality and volume, the most important characteristic of optical lenses is to increase the field of view (FOV). With the advancement of image sensing technology, the application of optical lenses is not only limited to shooting images and recordings, but also adds to the needs of environmental monitoring and driving record photography. Therefore, in response to driving environments or low-light environments and consumers' imaging quality, etc. Requirements, in the field of optical lens design, in addition to the pursuit of thinner lenses, must also take into account the imaging quality and performance of the lens.

In addition, the difference in ambient temperature of the electronic device under different usage environments can be The back focal length of the optical lens system can be changed, thereby affecting the imaging quality. Therefore, it is expected that the amount of back focal length variation of the lens group is not easily affected by temperature changes.

In view of the above problems, in addition to good imaging quality, the lens also has a low back focal length variation at different ambient temperatures and an increase in the angle of view, which is the focus of design improvement in this field. However, the design of optical lenses is not simply to reduce the proportion of lenses with good imaging quality to produce optical lenses with both imaging quality and miniaturization. The design process not only involves material characteristics, but also must consider production and assembly yield. Face the actual problem.

On the other hand, the application field of vehicle lenses continues to increase. From reversing, 360-degree surroundings, lane offset systems to advanced driver assistance systems (ADAS), etc., a car uses lenses from 6 to 20 lenses. Lens specifications have also continued to improve, from VGA (300,000) to more than one million pixels. However, there is still much room for improvement in the imaging quality of automotive lenses and the imaging quality of tens of millions of pixels on mobile phone lenses.

For example, in order to avoid the dead angle of the field of view in the function of reversing and 360-degree surroundings, the optical imaging lens needs to be able to take in imaging light with a horizontal field of view of 180±5 degrees.

In addition, the existing conventional image sensors have two aspect ratios of 4:3 and 16:9. First, for an image sensor with an aspect ratio of 4:3, the ratio of the diagonal field of view (Diagonal field) to the horizontal field of view (Horizontal field) is 1:0.8. On the other hand, for a 16:9 image sensor, the ratio of the diagonal field of view to the horizontal field of view is 1: 0.8716.

According to the ideal image height formula: y=f*tan(ω), y is the image height, f is the focal length, and ω is the half angle of view. The relationship between the image height y and the half angle of view ω is a tangent function, and the distortion formula is (y ₁ -y ₀ )/y ₀ , y ₁ is the image height after distortion, and y ₀ is the initial image height. In order to reduce the distortion aberration, the image height and the half angle of view are not in a proportional relationship. Therefore, if an optical imaging lens with a diagonal angle of view of 200 to 220 degrees is used, it can only take 140 to 160 degrees at a 0.8 field of view Of imaging light, and its 0.8716 field of view can only ingest 150-170 degrees of imaging light, and this will cause the following problems.

In order to reduce distortion aberration, taking an image sensor with an aspect ratio of 4:3 as an example, when the imaging field of the 4:3 image sensor takes in the imaging light of 200~220 degrees in the diagonal field of view, because The horizontal field of view of the image sensor can only ingest 140-160 degrees of imaging light, and part of the imaging light cannot be ingested, which will make the horizontal field of view have some blind spots in the field of view.

To solve the above problem of blind angle of view, a possible solution is to scale down the optical imaging lens or to enlarge the image sensor with an aspect ratio of 4:3 to make the image with an aspect ratio of 4:3. The horizontal field of view of the device can take in 180±5 degrees of imaging light. However, this leads to the problem that dark corners are generated in the four corners of the image sensor with an aspect ratio of 4:3 that cannot receive imaging light.

In view of this, in an embodiment of the present invention, an optical imaging lens capable of increasing the half angle of view of the lens while having a low focal length offset at different ambient temperatures and maintaining the proper length of the lens is provided. The optical imaging lens of the present invention includes an object side, an image side, and an optical axis. The first lens has a refractive index from the object side to the image side. The second lens has a refractive index from the object side to the image side. Two lenses with refractive power, the first The third lens is the fourth lens with refractive power from the image side to the object side, the fourth lens is the third lens with refractive power from the image side to the object side, and the fifth lens is from the image side to the object side The second lens with refractive power is the second in number. The sixth lens is the lens with refractive power from the image side to the object side. The first lens to the sixth lens each include an image toward the object side. The side of an object through which light passes, and the side of an image that faces an image side and passes an imaging light.

4.800。 In the embodiment of the present invention, the second lens has a negative refractive power, the object side of the second lens has a convex portion near the optical axis, and a convex portion near the circumference, and the material of the third lens is plastic. The object side of the third lens has a concave surface near the optical axis, the object side of the fourth lens has a convex surface near the optical axis, the object side of the fifth lens has a concave surface near the circumference, and the fifth lens The image side of the image has a concave surface area near the optical axis and a concave surface area near the circumference, the image side of the sixth lens has a convex surface area near the optical axis, and a convex surface area near the circumference, where G12 is the distance between the image side of the first lens and the object side of the second lens on the optical axis, G34 is the distance between the image side of the third lens and the object side of the fourth lens on the optical axis, and T3 is defined as the third lens The center thickness on the optical axis, EFL is defined as the effective focal length of the optical imaging lens, and meets the following conditions: (G12+T3+G34)/EFL

4.800.

The embodiment of the present invention also proposes an optical imaging lens that can increase the half angle of view of the lens, and at the same time has a low focal length offset under different ambient temperatures, and can maintain the proper length of the lens. The optical imaging lens of the present invention includes the object side, the image side, and the optical axis. The first lens is the number from the object side to the image side. The first lens has a refractive power. The second lens is the second lens with refractive power from the object side to the image side, the third lens is the fourth lens with refractive power from the image side to the object side, and the fourth lens is from the image side to the object side The third lens has the refractive index, the fifth lens has the refractive index from the image side to the object side, the second lens has the refractive index from the image side to the object side, and the first lens has the refractive index The first lens to the sixth lens each include an object side facing the object side and passing an imaging ray, and an image side facing the image side and passing an imaging ray.

4.800。 In the embodiment of the present invention, the second lens has a negative refractive power, the object side of the second lens has a convex portion near the optical axis, and a convex portion near the circumference, and the material of the third lens is plastic. The object side of the third lens has a concave surface near the optical axis, and the image side of the third lens has a convex surface near the optical axis. The object side of the fourth lens has a convex surface near the optical axis. The image side of the five lens has a concave surface area near the optical axis and a concave surface area near the circumference, the image side of the sixth lens has a convex surface area near the optical axis, and a convex surface area around the circumference , Where G12 is the distance between the image side of the first lens and the object side of the second lens on the optical axis, G34 is the distance between the image side of the third lens and the object side of the fourth lens on the optical axis, and T3 is defined as the The center thickness of the three lenses on the optical axis, EFL is defined as the effective focal length of the optical imaging lens, and meets the following conditions: (G12+T3+G34)/EFL

4.800.

The embodiment of the present invention also proposes an optical imaging lens that can increase the half angle of view of the lens, and at the same time has a low focal length offset under different ambient temperatures, and can maintain the proper length of the lens. The optical imaging lens of the present invention includes an object side, an image side and Optical axis, the first lens is the first lens with refractive power from the object side to the image side, the second lens is the second lens with refractive power from the object side to the image side, and the third lens is the image The fourth lens has a refractive index from the side to the object side. The fourth lens has the refractive index from the image side to the object side. The third lens has the refractive index from the image side to the object side. A lens with a refractive power, the sixth lens is the number from the image side to the object side. The first lens has a refractive power, and each of the first lens to the sixth lens includes a lens that faces an object side and passes an imaging ray Object side, and an image side facing the image side and passing an imaging light.

4.800。 In the embodiment of the present invention, the object side of the second lens has a convex portion near the optical axis and a convex portion near the circumference. The material of the third lens is plastic, and the third lens has positive refractive power. The object side of the third lens has a concave surface near the optical axis, the object side of the fourth lens has a convex surface near the optical axis, the image side of the fifth lens has a concave surface near the optical axis, and has A concave portion near the circumference, the image side of the sixth lens has a convex portion near the optical axis, and a convex portion near the circumference, where G12 is the image side of the first lens and the object side of the second lens The distance on the optical axis, G34 is the distance between the image side of the third lens and the object side of the fourth lens on the optical axis, T3 is defined as the center thickness of the third lens on the optical axis, and EFL is defined as the optical imaging lens Effective focal length, and meet the following conditions: (G12+T3+G34)/EFL

4.800.

5.800。 In the optical imaging lens of the present invention, G45 is the distance between the image side of the fourth lens and the object side of the fifth lens on the optical axis, and T5 is the center thickness of the fifth lens on the optical axis , G56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, G23 is the image side of the second lens and the object side of the third lens at the light The distance on the axis, AAG is the sum of G12, G23, G34, G45 and G56, and meets the following conditions: AAG/(G34+G45+T5+G56)

5.800.

1.700。 In the optical imaging lens of the present invention, where T2 is the center thickness of the second lens on the optical axis, and G45 is the distance between the image side of the fourth lens and the object side of the fifth lens on the optical axis , And meet the following conditions: (T2+G34+G45)/EFL

1.700.

4.300。 In the optical imaging lens of the present invention, where ALT is the sum of the central thicknesses of all lenses with refractive power on the optical axis in the optical imaging lens, T6 is the central thickness of the sixth lens on the optical axis, and satisfies The following conditions: ALT/T6

4.300.

2.100。 In the optical imaging lens of the present invention, where T1 is the center thickness of the first lens on the optical axis, and satisfies the following conditions: G12/T1

2.100.

2.700。 In the optical imaging lens of the present invention, T1 is the center thickness of the first lens on the optical axis, and T4 is the center thickness of the fourth lens on the optical axis, and satisfies the following conditions: (T1+T3)/ T4

2.700.

1.600。 In the optical imaging lens of the present invention, BFL is the length from the image side of the sixth lens to an imaging plane on the optical axis, and G23 is the image side of the second lens and the object side of the third lens The distance on the optical axis and meet the following conditions: BFL/G23

1.600.

2.500。 In the optical imaging lens of the present invention, T6 is the center thickness of the sixth lens on the optical axis, and G23 is the distance between the image side of the second lens and the object side of the third lens on the optical axis , G45 is the distance between the image side of the fourth lens and the object side of the fifth lens on the optical axis, G56 is the image side of the fifth lens and the object side of the sixth lens at the light The distance on the axis, AAG is the sum of G12, G23, G34, G45 and G56, and meets the following conditions: AAG/T6

2.500.

1.400。 In the optical imaging lens of the present invention, the following conditions are more satisfied: T3/EFL

1.400.

4.700。 In the optical imaging lens of the present invention, where ALT is the sum of the central thicknesses of all the lenses with refractive power on the optical axis in the optical imaging lens, G23 is the image side of the second lens and the third lens The distance of the side of the object on the optical axis and meets the following conditions: ALT/G23

4.700.

1.400。 In the optical imaging lens of the present invention, G12 is the distance between the image side of the first lens and the object side of the second lens on the optical axis, and T2 is the center thickness of the second lens on the optical axis , And meet the following conditions: G12/(T2+G34+G45)

1.400.

8.400。 In the optical imaging lens of the present invention, where TL is the distance from the object side of the first lens to the image side of the sixth lens on the optical axis, T4 is the center thickness of the fourth lens on the optical axis , BFL is the length from the image side of the sixth lens to an imaging plane on the optical axis, and satisfies the following condition: TL/(T4+BFL)

8.400.

6.500。 In the optical imaging lens of the present invention, TTL is the length from the object side of the first lens to an imaging plane on the optical axis, and G45 is the image side of the fourth lens and the object side of the fifth lens The distance on the optical axis, T5 is the center thickness of the fifth lens on the optical axis, G56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, And meet the following conditions: TTL/(T3+G34+G45+T5+G56)

6.500.

2.300。 In the optical imaging lens of the present invention, G23 is the distance between the image side of the second lens and the object side of the third lens on the optical axis, and G45 is the image side of the fourth lens and the fifth The distance of the object side of the lens on the optical axis, G56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, AAG is G12, G23, G34, G45 and The sum of G56, and meet the following conditions: AAG/G23

2.300.

2.000。 In the optical imaging lens of the present invention, G45 is the distance between the image side of the fourth lens and the object side of the fifth lens on the optical axis, and T5 is the center thickness of the fifth lens on the optical axis , G56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, and meets the following conditions: (G34+G45+T5+G56)/EFL

2.000.

2.200。 In the optical imaging lens of the present invention, T1 is the center thickness of the first lens on the optical axis, and T4 is the center thickness of the fourth lens on the optical axis, and satisfies the following conditions: (T1+G12)/ T4

2.200.

12.100。 In the optical imaging lens of the present invention, TL is the distance of the object side of the first lens to the image side of the sixth lens on the optical axis, and T2 is the center thickness of the second lens on the optical axis, G45 is the distance between the image side of the fourth lens and the object side of the fifth lens on the optical axis, and satisfies the following condition: TL/(T2+G34+G45)

12.100.

1.600。 In the optical imaging lens of the present invention, BFL is the length from the image side of the sixth lens to an imaging plane on the optical axis, and T6 is the center thickness of the sixth lens on the optical axis, and satisfies the following conditions : BFL/T6

1.600.

The invention provides an optical imaging lens, which can make the image sensor to which the optical imaging lens applies have a horizontal viewing angle greater than or equal to 175 degrees, and the image sensed by the image sensor has no vignetting.

An embodiment of the present invention provides an optical imaging lens, which includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in order from the object side to the image side along the optical axis. The first lens to the sixth lens each include an object side facing the object side and passing the imaging light, and an image side facing the image side and passing the imaging light. The first lens is the first lens having refractive power from the object side to the image side. The second lens is a second lens having refractive power from the object side to the image side. The third lens is the third lens having refractive power from the object side to the image side. The fourth lens is the first lens having refractive power from an aperture to the number of image sides. The fifth lens is the second lens having refractive power from the aperture to the image side. The sixth lens is the third lens having refractive power from the aperture to the image side. The imaging circle of the optical imaging lens has an inscribed rectangle with an aspect ratio of 4:3. A reference line passing through the center of the imaging circle and parallel to any long side of the rectangle corresponds to an image with a viewing angle greater than or equal to 175° and less than or equal to 188°, and a diagonal line of the rectangle corresponds to an intake of greater than or equal to 209° and less than An image equal to 234° viewing angle. The reference line extends from one short side of the rectangle to the other short side of the rectangle. The length of the reference line is equal to the length of any long side of the rectangle.

An embodiment of the present invention provides an optical imaging lens from the object side to the image The side along the optical axis includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in this order. The first lens to the sixth lens each include an object side facing the object side and passing the imaging light, and an image side facing the image side and passing the imaging light. The first lens is the first lens having refractive power from the object side to the image side. The second lens is a second lens having refractive power from the object side to the image side. The third lens is the third lens having refractive power from the object side to the image side, and the third lens has a concave surface portion located in a region near the optical axis. The fourth lens is the first lens having refractive power from an aperture to the number of image sides. The fifth lens is the second lens having refractive power from the aperture to the image side. The sixth lens is the third lens having refractive power from the aperture to the image side. The imaging circle of the optical imaging lens has an inscribed rectangle with an aspect ratio of 16:9. A reference line passing through the center of the imaging circle and parallel to any long side of the rectangle corresponds to an image with a viewing angle greater than or equal to 176° and less than or equal to 201°, and a diagonal line of the rectangle corresponds to an intake of greater than or equal to 205° and Images with a viewing angle of 232° or less. The reference line extends from one short side of the rectangle to the other short side of the rectangle. The length of the reference line is equal to the length of any long side of the rectangle.

Based on the above, the beneficial effects of the optical imaging lens of the embodiments of the present invention are: by satisfying the arrangement of the lens and the aperture with the refractive power, the surface shape, the imaging circle of the optical imaging lens, the inscribed rectangle of the imaging circle, The relationship between the image taken by the reference line of view and the image taken by the diagonal line of view. The image sensed by the image sensor using this optical imaging lens has no blind spot in the horizontal direction, and the four of the image sensor The corners can sense the imaging light so that the image sensed by the image sensor has no dark corners.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

A~C: area

CE: Imaging circle center

DL: diagonal

E: Extension

HL: Reference line

IC: imaging circle

Lc: chief ray

Lm: edge light

LE: Long side

RT: inscribed rectangle

SE: Short side

T1~T8: thickness of each lens center

1: Optical imaging lens

2: Object side

3: like side

4. I: optical axis

10: First lens

20: Second lens

30: third lens

40: fourth lens

50: fifth lens

60: sixth lens

70: seventh lens

8: Eighth lens

80: Aperture

90: filter

91: imaging surface

11, 21, 31, 41, 51, 61, 71, 81: object side

12, 22, 32, 42, 52, 62, 72, 82: like side

13, 14, 23, 24, 36, 37, 43, 44, 46, 47, 53', 54', 56', 57', 63, 64, 66, 67, 74', 76, 77, 83, 86 87, convex face

16, 17, 26, 27, 33, 34, 43', 47', 53, 54, 56, 57, 63', 64', 73, 74, 84: concave part

1 to 5 are schematic diagrams of a method for judging the shape of curvature of the optical imaging lens of the present invention.

6 is a schematic diagram of the first embodiment of the optical imaging lens of the present invention.

7A illustrates the longitudinal spherical aberration on the imaging plane of the first embodiment.

7B illustrates the astigmatic aberration on the sagittal direction of the first embodiment.

7C illustrates the astigmatic aberration on the meridional direction of the first embodiment.

FIG. 7D illustrates the distortion aberration of the first embodiment.

8 is a schematic diagram of a second embodiment of the optical imaging lens of the present invention.

9A illustrates the longitudinal spherical aberration on the imaging plane of the second embodiment.

9B illustrates the astigmatic aberration on the sagittal direction of the second embodiment.

9C illustrates the astigmatic aberration on the meridian direction of the second embodiment.

FIG. 9D illustrates the distortion aberration of the second embodiment.

10 is a schematic diagram of a third embodiment of the optical imaging lens of the present invention.

FIG. 11A illustrates the longitudinal spherical aberration on the imaging plane of the third embodiment.

FIG. 11B illustrates the astigmatic aberration on the sagittal direction of the third embodiment.

FIG. 11C illustrates the astigmatic aberration on the meridian direction of the third embodiment.

FIG. 11D illustrates the distortion aberration of the third embodiment.

12 is a schematic diagram of a fourth embodiment of the optical imaging lens of the present invention.

FIG. 13A illustrates the longitudinal spherical aberration on the imaging plane of the fourth embodiment.

FIG. 13B illustrates the astigmatic aberration on the sagittal direction of the fourth embodiment.

FIG. 13C illustrates the astigmatic aberration on the meridian direction of the fourth embodiment.

FIG. 13D illustrates the distortion aberration of the fourth embodiment.

14 is a schematic diagram of a fifth embodiment of the optical imaging lens of the present invention.

15A illustrates the longitudinal spherical aberration on the imaging plane of the fifth embodiment.

15B illustrates the astigmatic aberration on the sagittal direction of the fifth embodiment.

15C illustrates the astigmatic aberration on the meridional direction of the fifth embodiment.

FIG. 15D illustrates the distortion aberration of the fifth embodiment.

16 is a schematic diagram of a sixth embodiment of the optical imaging lens of the present invention.

FIG. 17A illustrates the longitudinal spherical aberration on the imaging plane of the sixth embodiment.

17B illustrates the astigmatic aberration on the sagittal direction of the sixth embodiment.

FIG. 17C illustrates the astigmatic aberration on the meridian direction of the sixth embodiment.

FIG. 17D illustrates the distortion aberration of the sixth embodiment.

18 is a schematic diagram of a seventh embodiment of the optical imaging lens of the present invention.

FIG. 19A illustrates the longitudinal spherical aberration on the imaging plane of the seventh embodiment.

FIG. 19B illustrates the astigmatic aberration on the sagittal direction of the seventh embodiment.

FIG. 19C illustrates the astigmatic aberration on the meridian direction of the seventh embodiment.

FIG. 19D illustrates the distortion aberration of the seventh embodiment.

20 is a schematic diagram of an eighth embodiment of the optical imaging lens of the present invention.

21A illustrates the longitudinal spherical aberration on the imaging plane of the eighth embodiment.

21B illustrates the astigmatic aberration on the sagittal direction of the eighth embodiment.

21C illustrates the astigmatic aberration on the meridional direction of the eighth embodiment.

FIG. 21D illustrates the distortion aberration of the eighth embodiment.

22 is a schematic diagram of a ninth embodiment of the optical imaging lens of the present invention.

23A illustrates the longitudinal spherical aberration on the imaging plane of the ninth embodiment.

23B illustrates the astigmatic aberration on the sagittal direction of the ninth embodiment.

FIG. 23C illustrates the astigmatic aberration on the meridional direction of the ninth embodiment.

FIG. 23D illustrates the distortion aberration of the ninth embodiment.

24 is a schematic diagram of a tenth embodiment of the optical imaging lens of the present invention.

FIG. 25A illustrates the longitudinal spherical aberration on the imaging plane of the tenth embodiment.

FIG. 25B illustrates the astigmatic aberration on the sagittal direction of the tenth embodiment.

FIG. 25C illustrates the astigmatic aberration on the meridian direction of the tenth embodiment.

FIG. 25D illustrates the distortion aberration of the tenth embodiment.

26 is a schematic diagram of an eleventh embodiment of the optical imaging lens of the present invention.

FIG. 27A illustrates the longitudinal spherical aberration on the imaging plane of the eleventh embodiment.

FIG. 27B illustrates the astigmatic aberration on the sagittal direction of the eleventh embodiment.

FIG. 27C illustrates the astigmatic aberration on the meridian direction in the eleventh embodiment.

FIG. 27D illustrates the distortion aberration of the eleventh embodiment.

FIG. 28 is a schematic diagram of a twelfth embodiment of the optical imaging lens of the present invention.

FIG. 29A illustrates the longitudinal spherical aberration on the imaging plane of the twelfth embodiment.

FIG. 29B illustrates the astigmatic aberration on the sagittal direction of the twelfth embodiment.

FIG. 29C illustrates the astigmatic aberration on the meridian direction in the twelfth embodiment.

FIG. 29D illustrates the distortion aberration of the twelfth embodiment.

Fig. 30 shows detailed optical data of the first embodiment.

Fig. 31 shows detailed aspheric data of the first embodiment.

Fig. 32 shows detailed optical data of the second embodiment.

Fig. 33 shows detailed aspheric data of the second embodiment.

Fig. 34 shows detailed optical data of the third embodiment.

Fig. 35 shows detailed aspheric data of the third embodiment.

Fig. 36 shows detailed optical data of the fourth embodiment.

Fig. 37 shows detailed aspheric data of the fourth embodiment.

Fig. 38 shows detailed optical data of the fifth embodiment.

Fig. 39 shows detailed aspheric data of the fifth embodiment.

Fig. 40 shows detailed optical data of the sixth embodiment.

Fig. 41 shows detailed aspheric data of the sixth embodiment.

Fig. 42 shows detailed optical data of the seventh embodiment.

Fig. 43 shows detailed aspheric data of the seventh embodiment.

Fig. 44 shows detailed optical data of the eighth embodiment.

Fig. 45 shows detailed aspheric data of the eighth embodiment.

Fig. 46 shows detailed optical data of the ninth embodiment.

Fig. 47 shows detailed aspheric data of the ninth embodiment.

Fig. 48 shows detailed optical data of the tenth embodiment.

Fig. 49 shows detailed aspheric data of the tenth embodiment.

Fig. 50 shows detailed optical data of the eleventh embodiment.

Fig. 51 shows detailed aspherical data of the eleventh embodiment.

Fig. 52 shows detailed optical data of the twelfth embodiment.

Fig. 53 shows detailed aspherical data of the twelfth embodiment.

Fig. 54 shows important parameters of the first to fifth embodiments.

Fig. 55 shows important parameters of the first to fifth embodiments.

Fig. 56 shows important parameters of Examples 6 to 12.

Fig. 57 shows important parameters of Examples 6 to 12.

58A and 58B are schematic diagrams illustrating the imaging circle and the inscribed rectangle of the optical imaging lens of the embodiment of the present invention and related parameters.

59 is a schematic diagram of the thirteenth embodiment of the optical imaging lens of the present invention.

FIG. 60A illustrates the longitudinal spherical aberration on the imaging plane of the thirteenth embodiment.

FIG. 60B illustrates the astigmatic aberration on the sagittal direction of the thirteenth embodiment.

FIG. 60C illustrates the astigmatic aberration on the meridian direction of the thirteenth embodiment.

FIG. 60D shows the distortion aberration of the thirteenth embodiment.

FIG. 61 is a schematic diagram of a fourteenth embodiment of the optical imaging lens of the present invention.

FIG. 62A illustrates the longitudinal spherical aberration on the imaging plane of the fourteenth embodiment.

Fig. 62B shows the astigmatic aberration on the sagittal direction of the fourteenth embodiment.

Fig. 62C shows the astigmatic aberration on the meridian direction of the fourteenth embodiment.

Fig. 62D shows the distortion aberration of the fourteenth embodiment.

FIG. 63 is a schematic diagram of the fifteenth embodiment of the optical imaging lens of the present invention.

64A illustrates the longitudinal spherical aberration on the imaging plane of the fifteenth embodiment.

FIG. 64B illustrates the astigmatic aberration on the sagittal direction of the fifteenth embodiment.

64C illustrates the astigmatic aberration on the meridian direction of the fifteenth embodiment.

FIG. 64D shows the distortion aberration of the fifteenth embodiment.

65 is a schematic diagram of a sixteenth embodiment of the optical imaging lens of the present invention.

66A illustrates the longitudinal spherical aberration on the imaging plane of the sixteenth embodiment.

66B illustrates the astigmatic aberration on the sagittal direction of the sixteenth embodiment.

66C illustrates the astigmatic aberration on the meridian direction of the sixteenth embodiment.

FIG. 66D shows the distortion aberration of the sixteenth embodiment.

67 is a schematic diagram of a seventeenth embodiment of the optical imaging lens of the present invention.

FIG. 68A illustrates the longitudinal spherical aberration on the imaging plane of the seventeenth embodiment.

FIG. 68B illustrates the astigmatic aberration on the sagittal direction of the seventeenth embodiment.

FIG. 68C shows the astigmatic aberration on the meridian direction of the seventeenth embodiment.

FIG. 68D shows the distortion aberration of the seventeenth embodiment.

69 is a schematic diagram of an eighteenth embodiment of the optical imaging lens of the present invention.

FIG. 70A illustrates the longitudinal spherical aberration on the imaging plane of the eighteenth embodiment.

FIG. 70B illustrates the astigmatic aberration on the sagittal direction of the eighteenth embodiment.

FIG. 70C illustrates the astigmatic aberration on the meridian direction in the eighteenth embodiment.

FIG. 70D illustrates the distortion aberration of the eighteenth embodiment.

71 is a schematic diagram of a nineteenth embodiment of the optical imaging lens of the present invention.

FIG. 72A illustrates the longitudinal spherical aberration on the imaging plane of the nineteenth embodiment.

72B illustrates the astigmatic aberration on the sagittal direction of the nineteenth embodiment.

FIG. 72C illustrates the astigmatic aberration on the meridian direction in the nineteenth embodiment.

FIG. 72D shows the distortion aberration of the nineteenth embodiment.

73 is a schematic diagram of the twentieth embodiment of the optical imaging lens of the present invention.

74A shows the longitudinal spherical aberration on the imaging plane of the twentieth embodiment.

74B illustrates the astigmatic aberration on the sagittal direction of the twentieth embodiment.

FIG. 74C illustrates the astigmatic aberration on the meridian direction of the twentieth embodiment.

FIG. 74D shows the distortion aberration of the twentieth embodiment.

75 is a schematic diagram of the twenty-first embodiment of the optical imaging lens of the present invention.

76A illustrates the longitudinal spherical aberration on the imaging plane of the twenty-first embodiment.

76B illustrates the astigmatic aberration on the sagittal direction of the twenty-first embodiment.

FIG. 76C illustrates the astigmatic aberration on the meridian direction of the twenty-first embodiment.

FIG. 76D illustrates the distortion aberration of the twenty-first embodiment.

Fig. 77 shows detailed optical data of the thirteenth embodiment.

Fig. 78 shows detailed aspheric data of the thirteenth embodiment.

Fig. 79 shows detailed optical data of the fourteenth embodiment.

Fig. 80 shows detailed aspheric data of the fourteenth embodiment.

Fig. 81 shows detailed optical data of the fifteenth embodiment.

Fig. 82 shows detailed aspheric data of the fifteenth embodiment.

Fig. 83 shows detailed optical data of the sixteenth embodiment.

Fig. 84 shows detailed aspheric data of the sixteenth embodiment.

Fig. 85 shows detailed optical data of the seventeenth embodiment.

Fig. 86 shows detailed aspherical data of the seventeenth embodiment.

Fig. 87 shows detailed optical data of the eighteenth embodiment.

Fig. 88 shows detailed aspherical data of the eighteenth embodiment.

Fig. 89 shows detailed optical data of the nineteenth embodiment.

Fig. 90 shows detailed aspheric data of the nineteenth embodiment.

Fig. 91 shows detailed optical data of the twentieth embodiment.

Fig. 92 shows detailed aspheric data of the twentieth embodiment.

Fig. 93 shows detailed optical data of the twenty-first embodiment.

Fig. 94 shows detailed aspheric data of the twenty-first embodiment.

Fig. 95 shows important parameters of Embodiments 13 to 17.

Fig. 96 shows important parameters of Embodiments 13 to 17.

Fig. 97 shows important parameters of the eighteenth to twenty-first embodiments.

Fig. 98 shows important parameters of the eighteenth to twenty-first embodiments.

99 to 101 list the image height y, half angle of view ω (unit is degree), half angle of view ω (unit is radian) and their corresponding in the optical imaging lens 1 of the thirteenth to twenty-first embodiments Correspondence between the values of y/(EFL*ω).

Before starting to describe the present invention in detail, the first thing to explain is that in the drawings of the present invention, similar elements are denoted by the same number. Among them, "a lens has positive refractive power (or negative refractive power)" in this specification means that the lens has a positive refractive power (or negative) on the optical axis calculated by Gaussian optical theory ). The image side and the object side are defined as the range through which the imaging rays pass, where the imaging rays include the chief ray Lc and marginal ray Lm. As shown in FIG. 1, I is the optical axis and this lens is Taking this optical axis I as the axis of symmetry, they are radially symmetric to each other, The area on which the light passes through the optical axis is the area A near the optical axis, and the area on which the edge light passes is the area C near the circumference. In addition, the lens also includes an extension E (that is, the area C near the circumference radially outward). For the lens to be assembled in an optical imaging lens, ideal imaging light does not pass through the extension E, but the structure and shape of the extension E are not limited to this, the following embodiments are omitted for simplicity of the drawings Part of the extension. In more detail, the method of determining the area of the area near the surface or the optical axis, the area near the circumference, or a plurality of areas is as follows: Please refer to FIG. 1, which is a cross-sectional view of a lens in the radial direction. In terms of the sectional view, when judging the range of the aforementioned area, a central point is defined as an intersection point on the lens surface with the optical axis, and a conversion point is a point on the lens surface, and all lines passing through the point Perpendicular to the optical axis. If there are a plurality of conversion points outward in the radial direction, the conversion points are the first conversion point and the second conversion point in sequence, and the conversion point furthest from the optical axis in the radial direction of the effective half-effect path is the N-th conversion point. The range between the center point and the first conversion point is the area near the optical axis, the area radially outward of the Nth conversion point is the area near the circumference, and different areas can be distinguished in the middle according to each conversion point. In addition, the effective radius is the vertical distance from the intersection of the edge ray Lm and the lens surface to the optical axis I.

As shown in FIG. 2, the shape of the region is determined by the intersection of the light (or light extension line) parallel to the region and the optical axis on the image side or the object side (ray focus determination method). For example, when light passes through this area, the light will focus toward the image side, and the focal point of the optical axis will be located at the image side, such as point R in FIG. 2, the area is a convex surface. Conversely, if light passes through a certain area, the light will diverge, and the focal point of its extension line and optical axis is on the object side. For example, point M in FIG. 2, the area is a concave surface. The convex surface is from the center point to the first transition point, and the area radially outward of the first transition point is the concave surface; as can be seen from FIG. 2, the transition point is the boundary point between the convex surface and the concave surface, so this can be defined The region and the region adjacent to the inner side of the region in the radial direction have different surface shapes with the transition point as the boundary. In addition, if the surface shape of the area near the optical axis can be determined according to the judgment method of ordinary knowledge in the field, the R value (referred to the radius of curvature of the near axis, usually refers to the R on the lens data (lens data) in the optical software Value) Positive and negative judgment of unevenness. For the side of the object, when the R value is positive, it is determined to be a convex surface, when the R value is negative, it is determined to be a concave surface; for the image side, when the R value is positive, it is determined to be a concave surface, when R When the value is negative, it is determined as a convex surface. The method of determining the unevenness and light focus is the same. If there is no conversion point on the lens surface, the area around the optical axis is defined as 0-50% of the effective radius, and the area around the circumference is defined as 50-100% of the effective radius.

The lens image side surface of Example 1 in FIG. 3 has only the first conversion point on the effective radius, then the first area is the area near the optical axis, and the second area is the area near the circumference. The R value of the image side of the lens is positive, so it is judged that the area near the optical axis has a concave surface; the shape of the area near the circumference is different from the inner area adjacent to the area in the radial direction. That is, the area near the circumference and the area near the optical axis have different surface shapes; the area near the circumference has a convex surface.

The lens object-side surface of Example 2 in FIG. 4 has first and second transition points on the effective radius, then the first area is the area near the optical axis, and the third area is the area near the circumference. The R value of the object side of the lens is positive, so the area near the optical axis is judged to be a convex surface; the area between the first conversion point and the second conversion point (the second area) has a concave surface, and the circumference is attached The near area (third area) has a convex face.

The lens object side surface of Example 3 in FIG. 5 has no conversion point on the effective radius. In this case, the effective radius of 0% to 50% is the area near the optical axis, and 50% to 100% is the area near the circumference. Since the R value of the area near the optical axis is positive, the side surface of the object has a convex surface in the area near the optical axis; and there is no transition point between the area near the circumference and the area near the optical axis, so the area near the circumference has a convex surface.

As shown in FIG. 6, the optical imaging lens 1 of the present invention includes at least a first lens 10 along an optical axis 4 from an object side 2 where an object (not shown) is placed to an image side 3 to be imaged. The second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, the sixth lens 60, the filter 90, and the image plane 91. Here, the first lens 10 is defined as the first lens with refractive power from the object side 2 to the image side 3, and the second lens 20 is the second lens with refractive power from the object side 2 to the image side 3 , The third lens 30 is the fourth lens with refractive index from the image side 3 to the object side 2. The fourth lens 40 is the third lens with refractive index from the image side 3 to the object side. The fifth lens 50 is the second lens with refractive power from the image side 3 to the object side 2 and the sixth lens 60 is the first lens with refractive power from the image side 3 to the object side 2. Generally speaking, the first lens 10, the second lens 20, the fourth lens 40, the fifth lens 50, and the sixth lens 60 can be made of plastic or glass material, but the invention is not limited thereto. The third lens 30 is made of plastic material, which helps to reduce the weight of the optical imaging lens and reduce the manufacturing cost.

In addition, the optical imaging lens 1 further includes an aperture stop 80 and is disposed at an appropriate position. In FIG. 6, the aperture 80 is provided on the third lens 30 With the fourth lens 40. When the light (not shown) emitted from the object (not shown) on the object side 2 enters the optical imaging lens 1 of the present invention, it will pass through the first lens 10, the second lens 20, and the third lens 30 After the aperture 80, the fourth lens 40, the fifth lens 50, the sixth lens 60, and the filter 90, they will focus on the imaging surface 91 of the image side 3 to form a clear image. In each embodiment of the present invention, the selectively disposed filter 90 can also be a filter with various suitable functions, which can filter light of a specific wavelength, and is provided on the image-facing surface 62 and the imaging surface of the sixth lens 60 Between 91.

Each lens in the optical imaging lens 1 of the present invention has an object side facing the object side 2 and an image side facing the image side 3, respectively. In addition, each lens in the optical imaging lens 1 of the present invention also has a region near the optical axis and a region near the circumference. For example, the first lens 10 has an object side 11 and an image side 12; the second lens 20 has an object side 21 and an image side 22; the third lens 30 has an object side 31 and an image side 32; and the fourth lens 40 has an object side 41 and The image side 42; the fifth lens 50 has an object side 51 and an image side 52; the sixth lens 60 has an object side 61 and an image side 62. Each object side and image side also have a region near the optical axis and a region near the circumference.

Each lens in the optical imaging lens 1 of the present invention also has a center thickness T located on the optical axis 4 respectively. For example, the first lens 10 has a first lens thickness T1, the second lens 20 has a second lens thickness T2, the third lens 30 has a third lens thickness T3, the fourth lens 40 has a fourth lens thickness T4, and the fifth lens 50 The fifth lens thickness T5 and the sixth lens 60 have a sixth lens thickness T6. Therefore, in the optical imaging lens 1 on the optical axis 4, the sum of the center thicknesses of all lenses having refractive power is called ALT.

In addition, in the optical imaging lens 1 of the present invention, there is a distance on the optical axis 4 between the lenses. For example, the distance between the image side 12 of the first lens 10 and the object side 21 of the second lens 20 on the optical axis 4 is G12, and the image side 22 of the second lens 20 to the object side 31 of the third lens 30 is on the optical axis 4 The distance above is G23, the distance from the image side 32 of the third lens 30 to the object side 41 of the fourth lens 40 on the optical axis 4 is G34, the distance from the image side 42 of the fourth lens 40 to the object side 51 of the fifth lens 50 The distance on the optical axis 4 is G45, and the distance on the optical axis 4 from the image side 52 of the fifth lens 50 to the object side 61 of the sixth lens 60 is G56. In addition, define AAG=G12+G23+G34+G45+G56.

In addition, the length of the object side surface 11 to the imaging surface 91 of the first lens 10 on the optical axis is TTL. The effective focal length of the optical imaging lens is EFL, and TL is the length of the object side surface 11 of the first lens 10 to the image side surface 62 of the sixth lens 60 on the optical axis 4.

In addition, redefining: f1 is the focal length of the first lens 10; f2 is the focal length of the second lens 20; f3 is the focal length of the third lens 30; f4 is the focal length of the fourth lens 40; f5 is the focal length of the fifth lens 50; f6 is the focal length of the sixth lens 60; n1 is the refractive index of the first lens 10; n2 is the refractive index of the second lens 20; n3 is the refractive index of the third lens 30; n4 is the refractive index of the fourth lens 40; n5 Is the refractive index of the fifth lens 50; n6 is the refractive index of the sixth lens 60; v 1 is the Abbe number of the first lens 10 (abbe number), that is, the dispersion coefficient; v 2 is the Abbe number of the second lens 20 V 3 is the Abbe coefficient of the third lens 30; v 4 is the Abbe coefficient of the fourth lens 10; v 5 is the Abbe coefficient of the fifth lens 50; and v 6 is the Abbe coefficient of the sixth lens 60. G6F represents the gap width on the optical axis 4 between the sixth lens 60 and the filter 90, TF represents the thickness of the filter 90 on the optical axis 4, GFP represents the gap width on the optical axis 4 between the filter 90 and the imaging plane 91, and BFL is the image side 62 of the sixth lens 60 to the imaging plane 91. The distance on the optical axis 4, that is, BFL=G6F+TF+GFP.

First embodiment

Please refer to FIG. 6, which illustrates a first embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 91 of the first embodiment, please refer to FIG. 7A, astigmatic aberration in the sagittal direction (astigmatic field aberration), please refer to FIG. 7B, the tangential direction. Please refer to FIG. 7C for astigmatic aberration and FIG. 7D for distortion aberration. In all embodiments, the Y axis of each spherical aberration diagram represents the field of view, and the highest point is 1.0. The Y axis of the astigmatism and distortion diagrams in the first to twelfth embodiments represents the image height and the system image height. It is 2.084 mm.

The optical imaging lens system 1 of the first embodiment is mainly composed of six lenses with refractive power, a filter 90, an aperture 80, and an imaging surface 91. The diaphragm 80 is provided between the third lens 30 and the fourth lens 40. The filter 90 can prevent light of a specific wavelength from being projected onto the imaging surface and affect imaging quality.

The material of the first lens 10 is glass and has a negative refractive power. The object side surface 11 facing the object side 2 has a convex surface portion 13 located near the optical axis and a convex surface portion 14 located near the circumference, and the image side 12 facing the image side 3 has a concave surface portion 16 located near the optical axis and near the circumference The concave part of the area 17. Both the object side 11 and the image side 12 of the first lens are spherical.

The second lens 20 is made of plastic and has negative refractive power. Towards the object side 2 The object side surface 21 has a convex surface portion 23 located near the optical axis and a convex surface portion 24 located near the circumference, and the image side 22 facing the image side 3 has a concave surface portion 26 located near the optical axis and a concave surface located near the circumference 27. Both the object side 21 and the image side 22 of the second lens 20 are aspherical.

The third lens 30 is made of plastic and has a positive refractive power. The object side surface 31 toward the object side 2 has a concave surface portion 33 located in the area near the optical axis and a concave surface portion 34 located in the area near the circumference, and the image toward the image side 3 The side surface 32 has a convex portion 36 located in the area near the optical axis and a convex portion 37 near the circumference. Both the object side 31 and the image side 32 of the third lens 30 are aspherical.

The fourth lens 40 is made of plastic and has a positive refractive power. The object side surface 41 facing the object side 2 has a convex portion 43 located in the area near the optical axis and a convex portion 44 located in the area near the circumference, and the image facing the image side 3 The side surface 42 has a convex portion 46 located in a region near the optical axis and a convex portion 47 near the circumference. The object side surface 41 and the image side surface 42 of the fourth lens 40 are both aspherical.

The fifth lens 50 is made of plastic and has negative refractive power. The object side surface 51 toward the object side 2 has a concave surface portion 53 located in the area near the optical axis and a concave surface portion 54 located in the area near the circumference, toward the image of the image side 3 The side surface 52 has a concave portion 56 located in the area near the optical axis and a concave portion 57 located in the area near the circumference. In addition, the object side surface 51 and the image side surface 52 of the fifth lens 50 are both aspherical.

The sixth lens 60 is made of plastic and has positive refractive power. The object side surface 61 facing the object side 2 has a convex surface portion 63 located in the area near the optical axis and a convex surface portion 64 located in the area near the circumference, facing the image side of the image side 3 62 has a region located near the optical axis The convex portion 66 of the domain and the convex portion 67 located in the area near the circumference. In addition, the object side surface 61 and the image side surface 62 of the sixth lens 60 are both aspherical. In this embodiment, the fifth lens 50 and the sixth lens 60 are filled with colloid or film, but it is not limited thereto. The filter 90 is located between the image side 62 and the imaging surface 91 of the sixth lens 60, and the filter 90 also has an object side 92 facing the object side 2 and an image side 93 facing the image side 3.

In the optical imaging lens 1 of the present invention, from the first lens 10 to the sixth lens 60, all object sides 11/21/31/41/51/61 and the image side 12/22/32/42/52/62 total Twelve surfaces. If it is aspherical, these aspherical surfaces are defined by the following formula (1):

Where: R represents the radius of curvature of the lens surface; Z represents the depth of the aspheric surface (the point on the aspheric surface from the optical axis is Y, and the tangent plane tangent to the vertex on the aspheric optical axis, the vertical distance between the two); Y represents the vertical distance between the point on the aspheric surface and the optical axis; K is the conic constant; a _i is the i-th aspheric coefficient.

It should be noted that if it is spherical, the conic coefficient K and the aspheric coefficient a _{i of} each order are both 0, and are shown in the table.

The optical data of the optical lens system of the first embodiment is shown in FIG. 30, aspheric The surface data is shown in Figure 31. A virtual reference plane (not shown) with an infinite radius of curvature is provided between the filter 90 and the imaging plane 91. In the optical lens system of the following embodiments, the f-number of the overall optical lens system is Fno, the effective focal length is (EFL), and the maximum half field of view (HFOV) is the overall optical lens system Half of the maximum field of view (Field of View), and the units of radius of curvature, thickness and focal length are all in millimeters (mm). Among them, System Image Height (ImgH for short) = 2.084 mm; EFL = 1.131 mm; HFOV = 107.500 degrees; TTL = 11.265 mm; Fno = 2.400. In addition, the design of the optical imaging lens of the first embodiment has good back focal length variation performance, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, while At an ambient temperature of 20°C, the change in back focal length is -0.040mm, and at an ambient temperature of 80°C, the change in back focal length is 0.066mm.

Second embodiment

Please refer to FIG. 8, which illustrates a second embodiment of the optical imaging lens 1 of the present invention. Please note that starting from the second embodiment, in order to simplify and clearly express the pattern, only the surface type of each lens different from the first embodiment is specifically marked on the figure, and the remaining surface types similar to the lens of the first embodiment, For example, concave or convex faces are not marked separately. Refer to FIG. 9A for longitudinal spherical aberration on the imaging surface 91 of the second embodiment, refer to FIG. 9B for astigmatic aberration in the sagittal direction, refer to FIG. 9C for astigmatic aberration in the meridional direction, and refer to FIG. 9D for distortion aberration . The design of the second embodiment is similar to that of the first embodiment, only the relevant parameters of the lens radius of curvature, lens thickness, lens aspheric coefficient or back focal length are different.

The detailed optical data of the second embodiment is shown in FIG. 32, and the aspherical data is shown in FIG. 33. System image height = 2.786 mm; EFL = 1.370 mm; HFOV = 107.500 degrees; TTL = 11.136 mm; Fno = 2.400. In particular: the second embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the second embodiment has good back focal length variation performance, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, and- At an ambient temperature of 20°C, the change in back focal length is -0.046mm, and at an ambient temperature of 80°C, the change in back focal length is 0.076mm.

Third embodiment

Please refer to FIG. 10, illustrating a third embodiment of the optical imaging lens 1 of the present invention. Refer to FIG. 11A for longitudinal spherical aberration on the imaging surface 91 of the third embodiment, refer to FIG. 11B for astigmatic aberration in the sagittal direction, refer to FIG. 11C for astigmatic aberration in the meridional direction, and refer to FIG. 11D for distortion aberration . The design of the third embodiment is similar to that of the first embodiment, except that the relevant parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are different.

The detailed optical data of the third embodiment is shown in FIG. 34, and the aspherical data is shown in FIG. 35, where the system image height=1.772 mm; EFL=1.105 mm; HFOV=96.750 degrees; TTL=12.911 mm; Fno=2.600. In particular: the third embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the third embodiment has good back focal length variation performance, setting a normal temperature of 20 °C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, and- At an ambient temperature of 20°C, the change in back focal length is -0.041mm, under the ambient temperature of 80℃, the change value of the back focal length is 0.066mm.

Fourth embodiment

Please refer to FIG. 12, illustrating a fourth embodiment of the optical imaging lens 1 of the present invention. The fourth embodiment refers to the longitudinal spherical aberration on the imaging surface 91 as shown in FIG. 13A, the sagittal astigmatic aberration as shown in FIG. 13B, the meridional astigmatic aberration as shown in FIG. 13C, and the distortion aberration as shown in FIG. 13D . The design of the fourth embodiment is similar to the first embodiment, except that the relevant parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are different.

The detailed optical data of the fourth embodiment is shown in FIG. 36, and the aspherical data is shown in FIG. 37, where the system image height=1.636 mm; EFL=0.962 mm; HFOV=96.750 degrees; TTL=11.925 mm; Fno=2.400. In particular: the fourth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the fourth embodiment has a good performance of back focal length variation, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, and at- At an ambient temperature of 20°C, the change in back focal length is -0.034mm, and at an ambient temperature of 80°C, the change in back focal length is 0.054mm.

Fifth embodiment

Please refer to FIG. 14, illustrating a fifth embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 91 of the fifth embodiment, please refer to FIG. 15A, for astigmatic aberration in the sagittal direction, please refer to FIG. 15B, for astigmatic aberration in the meridional direction, please refer to FIG. 15C. Refer to Figure 15D for distortion aberration. The design of the fifth embodiment is similar to that of the first embodiment, only relevant parameters such as lens radius of curvature, lens thickness, lens aspheric coefficient or back focal length are different.

The detailed optical data of the fifth embodiment is shown in FIG. 38, and the aspherical data is shown in FIG. 39, where the system image height = 3.450 mm; EFL = 1.973 mm; HFOV = 107.500 degrees; TTL=13.074 mm; Fno=2.600. In particular: the fifth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the fifth embodiment has a good performance of back focal length variation, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, while- At an ambient temperature of 20°C, the change in back focal length is -0.063mm, and at an ambient temperature of 80°C, the change in back focal length is 0.098mm.

Sixth embodiment

Please refer to FIG. 16, illustrating a sixth embodiment of the optical imaging lens 1 of the present invention. Refer to FIG. 17A for longitudinal spherical aberration on the imaging surface 91 of the sixth embodiment, refer to FIG. 17B for astigmatic aberration in the sagittal direction, refer to FIG. 17C for astigmatic aberration in the meridional direction, and refer to FIG. 17D for distortion aberration . In the sixth embodiment, the object side 51 of the fifth lens 50 has a convex surface 53' in the vicinity of the optical axis, the material of the fourth lens 40 is glass, and the object side 41 and the image side 42 of the fourth lens 40 are spherical . In addition, related parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are also different from the first embodiment.

In addition, from the sixth embodiment to the other In the embodiment, in addition to the first lens 10 to the sixth lens 60 described above, a seventh lens 70 is further disposed between the second lens 20 and the third lens 30. The seventh lens 70 is made of plastic and has positive refractive power. The object side surface 71 toward the object side 2 has a concave surface portion 73 located near the optical axis and a concave surface portion 74 located near the circumference, and the image side 72 toward the image side 3 has a convex surface portion 76 located near the optical axis and near the circumference The convex part 77 of the area. Both the object side 71 and the image side 72 of the seventh lens 70 are aspherical.

Similarly, the object side 71 and the image side 22 of the seventh lens 70 are defined by the following formula:

Where: R represents the radius of curvature of the lens surface; Z represents the depth of the aspheric surface (the point on the aspheric surface from the optical axis is Y, and the tangent plane tangent to the vertex on the aspheric optical axis, the vertical distance between the two); Y represents the vertical distance between the point on the aspheric surface and the optical axis; K is the conic constant; a _i is the i-th aspheric coefficient.

For the sixth embodiment and subsequent embodiments, T7 is the central thickness of the seventh lens on the optical axis 4. In the optical imaging lens 1 on the optical axis 4, the sum of the center thicknesses of all lenses having refractive power is called ALT.

In addition, redefining: f7 is the focal length of the seventh lens 70; n7 is the seventh lens The refractive index of the mirror 70; υ 7 is the Abbe coefficient of the seventh lens 70. The distance from the image side 22 of the second lens 20 to the object side 71 of the seventh lens 70 on the optical axis 4 is G27, and the image side 72 of the seventh lens 70 to the object side 31 of the third lens 30 on the optical axis 4 The distance is G73.

The detailed optical data of the sixth embodiment is shown in FIG. 40, and the aspherical data is shown in FIG. 41, where the system image height=1.667 mm; EFL=0.946 mm; HFOV=103.000 degrees; TTL=19.418 mm; Fno=2.400. In particular: the sixth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the sixth embodiment has good back focal length variation performance, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, and- At an ambient temperature of 20°C, the change in back focal length is -0.001mm, and at an ambient temperature of 80°C, the change in back focal length is 0.002mm.

Seventh embodiment

Please refer to FIG. 18, illustrating a seventh embodiment of the optical imaging lens 1 of the present invention. Refer to FIG. 19A for longitudinal spherical aberration on the imaging surface 91 of the seventh embodiment, refer to FIG. 19B for astigmatic aberration in sagittal direction, refer to FIG. 19C for astigmatic aberration in meridian direction, and refer to FIG. 19D for distortion aberration . The design of the seventh embodiment is similar to the sixth embodiment, except that the relevant parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are different.

The detailed optical data of the seventh embodiment is shown in FIG. 42 and the aspherical data is shown in FIG. 43, where the system image height=3.264 mm; EFL=1.853 mm; HFOV= 103.000 degrees; TTL=21.235 mm; Fno=2.600. In particular: the seventh embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the seventh embodiment has good back focal length variation performance, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, while in- At an ambient temperature of 20°C, the change in back focal length is -0.008mm, and at an ambient temperature of 80°C, the change in back focal length is 0.013mm.

Eighth embodiment

Please refer to FIG. 20, which illustrates an eighth embodiment of the optical imaging lens 1 of the present invention. The eighth embodiment refers to the longitudinal spherical aberration on the imaging plane 91 as shown in FIG. 21A, the sagittal astigmatic aberration as shown in FIG. 21B, the meridional astigmatic aberration as shown in FIG. 21C, and the distortion aberration as shown in FIG. 21D . The design of the eighth embodiment is similar to that of the sixth embodiment, only the relevant parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are different.

The detailed optical data of the eighth embodiment is shown in FIG. 44 and the aspherical data is shown in FIG. 45, where the system image height=3.383 mm; EFL=1.769 mm; HFOV=103.000 degrees; TTL=22.634 mm; Fno=2.600. In particular: the eighth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the eighth embodiment has good back focal length variation performance, setting a normal temperature of 20°C as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, and- At an ambient temperature of 20°C, the change in back focal length is 0.012mm, and at an ambient temperature of 80°C, the change in back focal length is -0.016mm.

Ninth embodiment

Please refer to FIG. 22, illustrating a ninth embodiment of the optical imaging lens 1 of the present invention. The ninth embodiment refers to the longitudinal spherical aberration on the imaging surface 91 as shown in FIG. 23A, the sagittal astigmatic aberration as shown in FIG. 23B, the meridional astigmatic aberration as shown in FIG. 23C, and the distortion aberration as shown in FIG. 23D . The design of the ninth embodiment is similar to that of the sixth embodiment, only the relevant parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are different.

The detailed optical data of the ninth embodiment is shown in FIG. 46, and the aspherical data is shown in FIG. 47, where the system image height=2.820 mm; EFL=1.129 mm; HFOV=103.000 degrees; TTL=15.052 mm; Fno=2.600. In particular: the ninth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the ninth embodiment has good performance of back focal length variation. The normal temperature of 20°C is set as a reference. At this temperature, the back focal length variation value (back focal length variation) is 0.000 mm, while in − At an ambient temperature of 20°C, the change in back focal length is 0.003mm, and at an ambient temperature of 80°C, the change in back focal length is -0.003mm.

Tenth embodiment

Please refer to FIG. 24 to illustrate a tenth embodiment of the optical imaging lens 1 of the present invention. The tenth embodiment refers to the longitudinal spherical aberration on the imaging plane 91 as shown in FIG. 25A, the sagittal astigmatic aberration as shown in FIG. 25B, the meridional astigmatic aberration as shown in FIG. 25C, and the distortion aberration as shown in FIG. 25D . The design of the tenth embodiment is similar to the sixth embodiment, Only the relevant parameters such as lens radius of curvature, lens thickness, lens aspheric coefficient or back focal length are different.

The detailed optical data of the tenth embodiment is shown in FIG. 48, and the aspherical data is shown in FIG. 49, where the system image height=2.030 mm; EFL=1.390 mm; HFOV=103.000 degrees; TTL=18.076 mm; Fno=2.400. In particular: the tenth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the tenth embodiment has good back focal length variation performance, setting a normal temperature of 20°C as a reference, at this temperature the back focal length variation value (back focal length variation) is 0.000 mm, and- At an ambient temperature of 20°C, the change in back focal length is 0.003mm, and at an ambient temperature of 80°C, the change in back focal length is -0.005mm.

Eleventh embodiment

Please refer to FIG. 26 to illustrate an eleventh embodiment of the optical imaging lens 1 of the present invention. For the eleventh embodiment, the longitudinal spherical aberration on the imaging surface 91 is shown in FIG. 27A, the sagittal astigmatic aberration is shown in FIG. 27B, the meridional astigmatic aberration is shown in FIG. 27C, and the distortion aberration is shown in FIG. 27D. The design of the eleventh embodiment is similar to that of the sixth embodiment, only the relevant parameters such as the radius of curvature of the lens, the thickness of the lens, the aspherical coefficient of the lens, or the back focal length are different.

Detailed optical data of the eleventh embodiment is shown in FIG. 50, and aspherical data is shown in FIG. 51, where the system image height = 2.146 mm; EFL = 1.459 mm; HFOV = 103.000 degrees; TTL = 14.34 mm ; Fno=2.500. In particular: the eleventh embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the eleventh The design of the optical imaging lens of the embodiment has a good performance of back focal length variation, setting a normal temperature of 20℃ as a reference, at this temperature, the back focal length variation value (back focal length variation) is 0.000mm, while in an environment of -20℃ At temperature, the change in the back focal length is 0.012mm, and at an ambient temperature of 80°C, the change in the back focal length is -0.016mm.

Twelfth embodiment

Please refer to FIG. 28, illustrating a twelfth embodiment of the optical imaging lens 1 of the present invention. The longitudinal spherical aberration on the imaging surface 91 of the twelfth embodiment is shown in FIG. 29A, the astigmatic aberration in the sagittal direction is shown in FIG. 29B, the meridional astigmatic aberration is shown in FIG. 29C, and the distortion aberration is shown in FIG. 29D. The design of the twelfth embodiment is similar to that of the sixth embodiment, only relevant parameters such as lens radius of curvature, lens thickness, lens aspheric coefficient or back focal length are different.

The detailed optical data of the twelfth embodiment is shown in FIG. 52, and the aspherical data is shown in FIG. 53, wherein the system image height=1.675 mm; EFL=0.975 mm; HFOV=103.000 degrees; TTL=14.015 mm ; Fno=2.500. In particular: the twelfth embodiment is easier to manufacture than the first embodiment and therefore the yield is higher. In addition, the design of the optical imaging lens of the twelfth embodiment has good performance of back focal length variation. The normal temperature of 20°C is set as a reference. At this temperature, the back focal length variation (back focal length variation) is 0.000 mm, while At an ambient temperature of -20°C, the change in back focal length is -0.008mm, and at an ambient temperature of 80°C, the change in back focal length is 0.012mm.

In addition, the important parameters of each embodiment are arranged in Figure 54, Figure 55, Figure 56 and Figure 57.

The applicant found that the lens configuration in this case can effectively improve the angle of view through the combination of the following designs, at the same time it has a low back focal length change at different ambient temperatures, and shortens the lens length and enhances the object clarity and achieves good imaging quality.

1. The area where the second lens object side is located near the optical axis is a convex portion, and the area where the second lens object side is located near the circumference is a convex portion, which can help collect imaging light.

2. The object side surface of the third lens located near the optical axis is a concave surface portion, which is helpful for correcting aberrations generated by the first lens and the second lens.

3. The material of the third lens is plastic, which helps to reduce the weight of the optical imaging lens and reduce the manufacturing cost.

4. The fourth lens has a convex portion on the side of the object near the optical axis, which can help focus the imaging light.

5. The area near the optical axis of the side surface of the fifth lens image is a concave surface portion, the area near the circumference of the fifth lens image side is a concave surface portion, the area near the optical axis of the sixth lens image side is a convex surface portion, and the area near the circumference of the sixth lens image side is The convex face can achieve the effect of correcting the overall aberration.

6. Selective matching with the second lens has negative refractive power, which can correct the aberration generated by the first lens.

7. Selectively match the third lens with positive refractive power, or the image side of the third lens located near the circumference is a convex surface, which can correct the aberration generated by the second lens.

8. Selectively match the fifth lens with the object side located in the vicinity of the circumference as a concave surface portion, which helps to adjust the aberrations generated by the first lens to the fourth lens.

In addition, through numerical control of the following parameters, designers can be assisted to design optical lens sets with good optical performance, effective overall length reduction, and technical feasibility. Therefore, the optical imaging system can achieve a better configuration under the numerical limits that satisfy the following conditional expressions:

(a) In order to shorten the length of the lens system, the present invention appropriately shortens the lens thickness and the air gap between the lenses, but considering the ease of the lens assembly process and the image quality must be taken into consideration, the lens thickness and the air gap between the lenses Each other needs to be adjusted with each other, or the ratio of specific optical parameters in the specific lens group value combination, so that the optical imaging system can achieve a better configuration under the numerical limit that satisfies the following conditional expressions.

2.300，較佳的範圍為1.400

AAG/G23

2.300；AAG/T6

2.500，較佳的範圍為1.400

AAG/T6

2.500；ALT/G23

4.700，較佳的範圍為1.900

ALT/G23

4.700；ALT/T6

4.300，較佳的範圍為2.600

ALT/T6

4.300；G12/T1

2.100，較佳的範圍為0.800

G12/T1

2.100；G12/(T2+G34+G45)

1.400，較佳的範圍為0.500

G12/(T2+G34+G45)

1.400；BFL/G23

1.600，較佳的範圍為0.300

BFL/G23

1.600；BFL/T6

1.600，較佳的範圍為0.300

BFL/T6

1.600；(T1+T3)/T4

2.700，較佳的範圍為1.100

(T1+T3)/T4

2.700；AAG/(G34+G45+T5+G56)

5.800，較佳的範圍為 2.000

AAG/(G34+G45+T5+G56)

5.800；(T1+G12)/T4

2.200，較佳的範圍為1.200

(T1+G12)/T4

2.200。 AAG/G23

2.300, the preferred range is 1.400

AAG/G23

2.300; AAG/T6

2.500, the preferred range is 1.400

AAG/T6

2.500; ALT/G23

4.700, the preferred range is 1.900

ALT/G23

4.700; ALT/T6

4.300, the preferred range is 2.600

ALT/T6

4.300; G12/T1

2.100, the preferred range is 0.800

G12/T1

2.100; G12/(T2+G34+G45)

1.400, the preferred range is 0.500

G12/(T2+G34+G45)

1.400; BFL/G23

1.600, the preferred range is 0.300

BFL/G23

1.600; BFL/T6

1.600, the preferred range is 0.300

BFL/T6

1.600; (T1+T3)/T4

2.700, the preferred range is 1.100

(T1+T3)/T4

2.700; AAG/(G34+G45+T5+G56)

5.800, the preferred range is 2.000

AAG/(G34+G45+T5+G56)

5.800; (T1+G12)/T4

2.200, the preferred range is 1.200

(T1+G12)/T4

2.200.

(b) If the following conditional expression is satisfied, the EFL and other optical parameters are maintained at a ratio, which can help expand the angle of view during the process of thinning the thickness of the optical system.

4.800，較佳的範圍為0.300

(G12+T3+G34)/EFL

4.800；(G34+G45+T5+G56)/EFL

2.000，較佳的範圍為0.600

(G34+G45+T5+G56)/EFL

2.000；T3/EFL

1.400，較佳的範圍為0.600

T3/EFL

1.400；(T2+G34+G45)/EFL

1.700，較佳的範圍為0.500

(T2+G34+G45)/EFL

1.700。 (G12+T3+G34)/EFL

4.800, the preferred range is 0.300

(G12+T3+G34)/EFL

4.800; (G34+G45+T5+G56)/EFL

2.000, the preferred range is 0.600

(G34+G45+T5+G56)/EFL

2.000; T3/EFL

1.400, the preferred range is 0.600

T3/EFL

1.400; (T2+G34+G45)/EFL

1.700, the preferred range is 0.500

(T2+G34+G45)/EFL

1.700.

c) Maintain an appropriate value of the ratio of the optical element parameter to the lens length, to avoid that the parameter is too small is not conducive to manufacturing, or to avoid the parameter is too large and make the lens length too long.

6.500，較佳的範圍為2.500

TTL/(T3+G34+G45+T5+G56)

6.500；TL/(T2+G34+G45)

12.100，較佳的範圍為5.700

TL/(T2+G34+G45)

12.100；TL/(T4+BFL)

8.400，較佳的範圍為2.400

TL/(T4+BFL)

8.400。 TTL/(T3+G34+G45+T5+G56)

6.500, the preferred range is 2.500

TTL/(T3+G34+G45+T5+G56)

6.500; TL/(T2+G34+G45)

12.100, the preferred range is 5.700

TL/(T2+G34+G45)

12.100; TL/(T4+BFL)

8.400, the preferred range is 2.400

TL/(T4+BFL)

8.400.

Next, in order to explain the composition of the optical imaging lens of the embodiment of the present invention The relationship between the image circle, its inscribed rectangle and the rear image sensor. Please refer to FIGS. 58A and 58B. Generally speaking, when the imaging light from the object side 2 is projected toward the image side 3 through the optical imaging lens 1, it is ideally focused by the optical imaging lens 1 to be located on the imaging surface 3 of the image side A circular image is formed on 91. This circular image is called an "imaging circle" IC (Imaging Circle). This imaging circle IC is the imaging result of the entire optical imaging lens 1. Moreover, the sensing surface (not shown) of the image sensor at the rear end of the optical imaging lens 1 is configured to overlap the imaging surface 91 so that the image sensor at the rear end of the optical imaging lens 1 senses the image. The imaging circle IC has an inscribed rectangle RT inscribed in the imaging circle IC, and the inscribed rectangle RT may have different aspect ratios according to different positions on the imaging circle IC. The inscribed rectangle RT has two opposite long sides LE and two opposite short sides SE, and the aspect ratio is defined as the length ratio of the long side LE to the short side SE. In the embodiment of the present invention, the aspect ratio of the inscribed rectangular RT is 4:3 (as shown in FIG. 58A) and 16:9 (as shown in FIG. 58B) as examples. In general, the shape of the image sensor is generally rectangular, and the aspect ratio of commonly used image sensors is 4:3 or 16:9, and its size can be matched as shown in FIGS. 58A and 58B. Connect the rectangle.

Please refer to FIGS. 58A and 58B again. First, the maximum half angle of view (HFOV) is the range of half the maximum angle that the optical imaging lens 1 can receive the image of the object on the object side 2 and that on the object side 2 The range of the radius length of the image of the object imaged by the optical imaging lens 1 on the imaging surface 91 of the image side 3 is called a field of view, where the field of view of 1 times is the maximum image height of 1 times, also known as the system image height. The size of the rear-end image sensor matches the inscribed rectangular RT shown in FIGS. 58A and 58B. The optical imaging lens 1 actually corresponds to the diagonal of the inscribed rectangular RT in the maximum viewing angle The image received in the diagonal direction of DL will be correspondingly imaged on the diagonal DL of the inscribed rectangular RT, while the image received by the optical imaging lens 1 in the horizontal direction in the viewing angle will be imaged correspondingly in the inscribed rectangular RT On the reference line HL. Therefore, the angle range of the diagonal angle of view (Diagonal FOV) corresponding to the diagonal field of view (Diagonal field) of the image sensor is taken by the diagonal line DL formed by the two diagonal lines connecting the rectangular RT The range of the beam angle of the object on the object side 2. On the other hand, the angle range of the horizontal field of view (Horizontal FOV) corresponding to the horizontal field of view of the image sensor is the light receiving angle range of the object on the object side 2 taken in by the reference line HL. The reference line HL is defined as passing through the center C of the imaging circle IC and parallel to the long side LE of the inscribed rectangle RT. The reference line HL extends from one short side SE of the rectangular RT to the other short side SE of the rectangular RT, and the length of the reference line HL is equal to the length of any long side LE of the rectangular RT.

Thirteenth embodiment

Please refer to FIG. 59, illustrating a thirteenth embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 91 of the thirteenth embodiment, please refer to FIG. 60A, the astigmatic aberration in the sagittal direction please refer to FIG. 60B, the astigmatic aberration in the meridional direction please refer to FIG. 60C, and the distortion aberration please refer to Figure 60D. In the thirteenth embodiment to the twenty-first embodiment, the Y axis of each astigmatism and distortion diagram represents a half angle of view, and the half angle of view is 104.50 degrees.

The optical imaging lens system 1 of the thirteenth embodiment is mainly composed of six lenses 10 to 60 with refractive power, a filter 90, an aperture 80, and an imaging surface 91. The diaphragm 80 is provided between the third lens 30 and the fourth lens 40. The filter 90 can prevent light of a specific wavelength from being projected onto the imaging surface 91 to affect imaging quality.

The first lens 10 is the first lens having refractive power from the object side 2 to the image side 3. The material of the first lens 10 is glass and has a negative refractive power. The object side surface 11 facing the object side 2 has a convex surface portion 13 located near the optical axis and a convex surface portion 14 located near the circumference, and the image side 12 facing the image side 3 has a concave surface portion 16 located near the optical axis and near the circumference The concave part of the area 17. Both the object side 11 and the image side 12 of the first lens are spherical.

The second lens 20 is a second lens having refractive power from the object side 2 to the image side 3. The second lens 20 is made of plastic and has negative refractive power. The object side surface 21 facing the object side 2 has a convex surface portion 23 located near the optical axis and a convex surface portion 24 located near the circumference, and the image side 22 facing the image side 3 has a concave surface portion 26 located near the optical axis and near the circumference The concave part 27 of the area. Both the object side 21 and the image side 22 of the second lens 20 are aspherical.

The third lens 30 is a third lens having refractive power from the object side 2 to the image side 3. The third lens 30 is made of plastic and has a positive refractive power. The object side surface 31 toward the object side 2 has a concave surface portion 33 located in the area near the optical axis and a concave surface portion 34 located in the area near the circumference, and the image toward the image side 3 The side surface 32 has a convex portion 36 located in the area near the optical axis and a convex portion 37 near the circumference. Both the object side 31 and the image side 32 of the third lens 30 are aspherical.

The diaphragm 80 is provided between the third lens 30 and the fourth lens 40.

The fourth lens 40 is the first lens that has refractive power from the aperture 80 to the image side by 3 numbers. The fourth lens 40 is made of plastic and has a positive refractive power. The object side surface 41 facing the object side 2 has a convex surface portion 43 located in the vicinity of the optical axis and a peripheral surface The convex portion 44 in the near region, and the image side surface 42 facing the image side 3 have a convex portion 46 located in the region near the optical axis and a convex portion 47 near the circumference. The object side surface 41 and the image side surface 42 of the fourth lens 40 are both aspherical.

The fifth lens 50 is the second lens having a refractive power from the aperture 80 to the image side 3 times. The fifth lens 50 is made of plastic and has negative refractive power. The object side surface 51 toward the object side 2 has a concave surface portion 53 located in the area near the optical axis and a concave surface portion 54 located in the area near the circumference, toward the image of the image side 3 The side surface 52 has a concave portion 56 located in the area near the optical axis and a concave portion 57 located in the area near the circumference. In addition, the object side surface 51 and the image side surface 52 of the fifth lens 50 are both aspherical.

The sixth lens 60 is the third lens having a refractive power from the aperture 80 to the image side by 3 numbers. The sixth lens 60 is made of plastic and has positive refractive power. The object side surface 61 facing the object side 2 has a convex surface portion 63 located in the area near the optical axis and a convex surface portion 64 located in the area near the circumference, facing the image side of the image side 3 62 has a convex portion 66 located in the area near the optical axis and a convex portion 67 located in the area near the circumference. In addition, the object side surface 61 and the image side surface 62 of the sixth lens 60 are both aspherical. Also in this embodiment, the fifth lens 50 and the sixth lens 60 are filled with colloid, film or cement material, but not limited to this. The filter 90 is located between the image side surface 62 and the imaging surface 91 of the sixth lens 60.

In the optical imaging lens 1 of the present invention, from the first lens 10 to the sixth lens 60, all object sides 11/21/31/41/51/61 and the image side 12/22/32/42/52/62 total Twelve curved surfaces. The curved surface can be defined by the above formula (1). If the curved surface is a spherical surface, the conic coefficient K and all aspheric coefficients a _i are 0, and the corresponding data is omitted and not shown.

The optical data of the optical lens system of the thirteenth embodiment is shown in FIG. 77, and the aspherical data is shown in FIG. 78. System image height = 2.240 mm; EFL = 1.000 mm; HFOV = 104.500 degrees; TTL = 11.869 mm; Fno = 2.060.

60A to 60D, the diagram of FIG. 60A illustrates the longitudinal spherical aberration of the thirteenth embodiment, and the diagrams of FIGS. 60B and 60C respectively illustrate the thirteenth embodiment when the wavelengths are 470 nm, 555 nm, and 650 nm. At the imaging plane 91, the curvature of field in the sagittal direction and the curvature of field in the meridional direction are shown in the graph of FIG. 60D, which illustrates the thirteenth embodiment when the wavelength is 470 nm, 555 nm, and 650 nm. On the distortion aberration. In the longitudinal spherical aberration diagram of this thirteenth embodiment, in FIG. 60A, the curve formed by each wavelength is very close and close to the middle, indicating that off-axis rays of different wavelengths and different heights are concentrated near the imaging point. The deflection amplitude of the one-wavelength curve shows that the deviation of the imaging point of off-axis light at different heights is controlled within ±0.025 mm, so the thirteenth embodiment does significantly improve the spherical aberration of the same wavelength. In addition, The distances between the three representative wavelengths are also quite close to each other, and the imaging positions representing the light of different wavelengths have been quite concentrated, so that the chromatic aberration is also significantly improved.

In the two field curvature aberration diagrams of FIG. 60B and FIG. 60C, the focal length variation of the three representative wavelengths in the entire field of view falls within ±0.075 mm, indicating that the optical system of the thirteenth embodiment can be effective Eliminate aberrations. The distortion aberration diagram of FIG. 60D shows that the distortion aberration of the thirteenth embodiment remains within ±100%, indicating that the distortion aberration of the thirteenth embodiment has met the imaging quality requirements of the optical system. according to This shows that compared with the existing optical lens, the thirteenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 11.869 mm.

Fourteenth embodiment

Please refer to FIG. 61, illustrating a fourteenth embodiment of the optical imaging lens 1 of the present invention. The fourteenth embodiment refers to the longitudinal spherical aberration on the imaging surface 91 in FIG. 62A, the sagittal astigmatic aberration in FIG. 62B, the meridional astigmatic aberration in FIG. 62C, and the distortion aberration in reference Figure 62D. The optical imaging lens 1 of the fourteenth embodiment is roughly similar to the thirteenth embodiment, and the differences between the two are as follows: each optical data, aspherical coefficient, and parameters between these lenses 10 to 60 are more or less slightly different. Also, the object side surface 41 of the fourth lens 40 has a concave surface portion 43' located in a region near the optical axis. It should be noted here that, in order to clearly display the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the thirteenth embodiment are omitted in FIG. 61.

The detailed optical data of the fourteenth embodiment is shown in FIG. 79, and the aspherical data is shown in FIG. 80, where the system image height=2.240 mm; EFL=0.990 mm; HFOV=117.000 degrees; TTL=12.994 mm ; Fno=2.060.

In the longitudinal spherical aberration diagram of this fourteenth embodiment in FIG. 62A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.025 mm. In the two field curvature aberration diagrams of FIG. 62B and FIG. 62C, the focal length changes of the three representative wavelengths within the entire field of view fall within ±0.1 mm. The distortion aberration diagram of FIG. 62D shows that the distortion aberration of the second embodiment is maintained within the range of ±100%. According to this, compared with the thirteenth embodiment, the fourteenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 12.944 mm.

It can be known from the above description that the half angle of view of the fourteenth embodiment is larger than that of the thirteenth embodiment.

Fifteenth embodiment

Please refer to FIG. 63, illustrating a fifteenth embodiment of the optical imaging lens 1 of the present invention. The fifteenth embodiment refers to the longitudinal spherical aberration on the imaging surface 91 in FIG. 64A, the sagittal astigmatic aberration in FIG. 64B, the meridional astigmatic aberration in FIG. 64C, and the distortion aberration in reference Figure 64D. The optical imaging lens 1 of the fifteenth embodiment is roughly similar to the thirteenth embodiment, and the differences between the two are as follows: the optical data, the aspheric coefficients, and the parameters between these lenses 10 to 60 are more or less slightly different. Also, the object side surface 41 of the fourth lens 40 has a concave surface portion 43' located in a region near the optical axis. It should be noted here that in order to clearly display the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the thirteenth embodiment are omitted in FIG. 63.

The detailed optical data of the fifteenth embodiment is shown in FIG. 81, and the aspherical data is shown in FIG. 82, where the system image height=2.058 mm; EFL=0.973 mm: HFOV=102.500 degrees; TTL=12.485 mm ; Fno=2.060.

In the longitudinal spherical aberration diagram in FIG. 15A of the fifteenth embodiment, the imaging point deviation of off-axis rays of different heights is controlled within a range of ±0.04 mm. In the two field curvature aberration diagrams of FIG. 64B and FIG. 64C, the focal length variation of the three representative wavelengths over the entire field of view falls within ±0.1 mm. The distortion aberration diagram of FIG. 64D shows that the distortion aberration of the second embodiment is maintained within the range of ±100%. According to this, compared with the thirteenth embodiment, the fifteenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 12.485 mm.

It can be known from the above description that the fifteenth embodiment is easier to manufacture than the thirteenth embodiment and therefore the yield is higher.

Sixteenth embodiment

Please refer to FIG. 65, illustrating a sixteenth embodiment of the optical imaging lens 1 of the present invention. The longitudinal spherical aberration on the imaging surface 91 of the sixteenth embodiment is shown in FIG. 66A, the astigmatic aberration in the sagittal direction is shown in FIG. 66B, the astigmatic aberration in the meridional direction is shown in FIG. 66C, and the distortion aberration is referred to Figure 66D. The optical imaging lens 1 of the sixteenth embodiment is roughly similar to the thirteenth embodiment, and the differences between the two are as follows: each optical data, aspherical coefficient, and parameters between these lenses 10 to 60 are more or less slightly different. Also, the object side surface 41 of the fourth lens 40 has a concave surface portion 43' located in a region near the optical axis. It should be noted here that, in order to clearly display the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the thirteenth embodiment are omitted in FIG. 65.

The detailed optical data of the sixteenth embodiment is shown in FIG. 83, and the aspherical data is shown in FIG. 84, where the system image height = 2.056 mm; EFL = 0.953 mm; HFOV = 116.000 degrees; TTL = 13.100 mm ; Fno=2.060.

In the longitudinal spherical aberration diagram of the sixteenth embodiment in FIG. 66A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.02 mm. In the two field curvature aberration diagrams of FIGS. 66B and 66C, the focal length variation of the three representative wavelengths over the entire field of view falls within ±0.075 mm. The distortion aberration diagram of FIG. 66D shows that the distortion aberration of the second embodiment is maintained within the range of ±100%. According to this, compared with the thirteenth embodiment, the sixteenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 13.100 mm.

It can be known from the above description that the half angle of view of the sixteenth embodiment is larger than that of the thirteenth embodiment. The longitudinal spherical aberration of the sixteenth embodiment is smaller than that of the thirteenth embodiment.

Seventeenth embodiment

Please refer to FIG. 67 to illustrate a seventeenth embodiment of the optical imaging lens 1 of the present invention. The longitudinal spherical aberration on the imaging surface 91 of the seventeenth embodiment is shown in FIG. 68A, the astigmatic aberration in the sagittal direction is shown in FIG. 68B, the astigmatic aberration in the meridional direction is shown in FIG. 68C, and the distortion aberration is referred to Figure 68D. The optical imaging lens 1 of the seventeenth embodiment is substantially similar to the thirteenth embodiment, and the differences between the two are as follows: each optical data, aspherical coefficient, and parameters between these lenses 10 to 60 are more or less slightly different. In addition, the refractive index of the fifth lens 50 is positive. The sixth lens 60 has a negative refractive power. The object side surface 51 of the fifth lens 50 has a convex surface portion 53' located near the optical axis and a convex surface portion 54' located near the circumference. The image side 52 of the fifth lens 50 has a convex portion 56' located in the area near the optical axis and a convex portion 57' located in the area near the circumference. The object side surface 61 of the sixth lens 60 has a concave portion 63' located in the area near the optical axis and a concave portion 64' located in the area near the circumference. Both the object side 51 and the image side 52 of the fifth lens 50 are spherical. Both the object side surface 61 and the image side surface 62 of the sixth lens 60 are spherical. It should be noted here that in order to clearly display the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the thirteenth embodiment are omitted in FIG. 67.

The detailed optical data of the seventeenth embodiment is shown in FIG. 85, and the aspherical data is shown in FIG. 86, where the system image height = 2.240 mm; EFL = 1.191 mm; HFOV=104.500 degrees; TTL=14.066mm; Fno=2.200.

In the longitudinal spherical aberration diagram of the seventeenth embodiment in FIG. 68A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.015 mm. In the two field curvature aberration diagrams of FIGS. 68B and 68C, the focal length variation of the three representative wavelengths over the entire field of view falls within ±0.25 mm. The distortion aberration diagram of FIG. 68D shows that the distortion aberration of the seventeenth embodiment is maintained within the range of ±100%. According to this, compared with the thirteenth embodiment, the seventeenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 14.066 mm.

It can be known from the above description that the seventeenth embodiment is easier to manufacture than the thirteenth embodiment and therefore the yield is higher.

Eighteenth embodiment

Please refer to FIG. 69, illustrating an eighteenth embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 91 of the eighteenth embodiment, please refer to FIG. 70A, for the astigmatic aberration in the sagittal direction, please refer to FIG. 70B, for the astigmatic aberration in the meridional direction, please refer to FIG. 70C, and for the distortion aberration, please refer to Figure 70D. The optical imaging lens 1 of the eighteenth embodiment is substantially similar to the thirteenth embodiment, and the differences between the two are as follows: each optical data, aspherical coefficient, and parameters between these lenses 10 to 60 are more or less slightly different. In addition, the material of the second lens 20 is glass. The refractive index of the fifth lens 50 is positive. The sixth lens 60 has a negative refractive power. The object side surface 51 of the fifth lens 50 has a convex surface portion 53' located near the optical axis and a convex surface portion 54' located near the circumference. The image side 52 of the fifth lens 50 has a convex portion 56' located in the area near the optical axis and a convex portion 57' located in the area near the circumference. The sixth lens 60 has an object side surface 61 There is a concave portion 63' located in the area near the optical axis and a concave portion 64' located in the area near the circumference. The image side 62 of the sixth lens 60 has a concave portion 66' located in the area near the optical axis and a concave portion 67' located in the area near the circumference. Both the object side 21 and the image side 22 of the second lens 20 are spherical. It should be noted here that in order to clearly show the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the thirteenth embodiment are omitted in FIG. 69.

The detailed optical data of the eighteenth embodiment is shown in FIG. 87, and the aspherical data is shown in FIG. 90, where the system image height=2.240 mm; EFL=1.101 mm; HFOV=117.000 degrees; TTL=21.301 mm ; Fno=2.400.

In the longitudinal spherical aberration diagram 70A of the eighteenth embodiment, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.010 mm. In the two field curvature aberration diagrams of FIG. 70B and FIG. 70C, the focal length variation of the three representative wavelengths over the entire field of view falls within ±0.04 mm. The distortion aberration diagram of FIG. 70D shows that the distortion aberration of the second embodiment is maintained within the range of ±100%. According to this, compared with the thirteenth embodiment, the eighteenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 21.301 mm.

It can be known from the above description that the half angle of view of the eighteenth embodiment is larger than that of the thirteenth embodiment. The longitudinal spherical aberration of the eighteenth embodiment is smaller than that of the thirteenth embodiment. The distortion aberration of the eighteenth embodiment is smaller than that of the thirteenth embodiment.

Nineteenth embodiment

Please refer to FIG. 71, illustrating a nineteenth implementation of the optical imaging lens 1 of the present invention example. For the longitudinal spherical aberration on the imaging surface 91 of the nineteenth embodiment, please refer to FIG. 72A, the astigmatic aberration in the sagittal direction please refer to FIG. 72B, the astigmatic aberration in the meridional direction please refer to FIG. 72C, and the distortion aberration please refer to Figure 72D. The optical imaging lens 1 of the nineteenth embodiment is substantially similar to the thirteenth embodiment, and the differences between the two are as follows: each optical data, aspherical coefficient, and parameters between these lenses 10 to 60 are more or less slightly different. In addition, the refractive index of the fifth lens 50 is positive. The sixth lens 60 has a negative refractive power. The image side 42 of the fourth lens 40 has a concave portion 47' located in the area near the circumference. The object side surface 51 of the fifth lens 50 has a convex surface portion 53' located near the optical axis and a convex surface portion 54' located near the circumference. The image side 52 of the fifth lens 50 has a convex portion 56' located in the area near the optical axis and a convex portion 57' located in the area near the circumference. The object side surface 61 of the sixth lens 60 has a concave portion 63' located in the area near the optical axis and a concave portion 64' located in the area near the circumference. Both the object side 51 and the image side 52 of the fifth lens 50 are spherical. Both the object side surface 61 and the image side surface 62 of the sixth lens 60 are spherical. It should be noted here that in order to clearly display the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the thirteenth embodiment are omitted in FIG. 71.

The detailed optical data of the nineteenth embodiment is shown in FIG. 89, and the aspherical data is shown in FIG. 92, where the system image height = 2.057 mm; EFL = 1.189 mm; HFOV = 102.500 degrees; TTL = 11.689 mm ; Fno=2.200.

In the longitudinal spherical aberration diagram of this nineteenth embodiment, in FIG. 72A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.025 mm. In the two field curvature aberration diagrams of FIGS. 72B and 72C, three representative wavelengths are in the entire field of view The amount of focal length variation is within ±0.08mm. The distortion aberration diagram of FIG. 72D shows that the distortion aberration of the nineteenth embodiment is maintained within the range of ±100%. According to this, compared with the thirteenth embodiment, the nineteenth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 11.689 mm.

It can be known from the above description that the system length of the nineteenth embodiment is smaller than that of the thirteenth embodiment.

Twentieth embodiment

Please refer to FIG. 73 for illustrating the twentieth embodiment of the optical imaging lens 1 of the present invention. Refer to FIG. 74A for longitudinal spherical aberration on the imaging surface 91 of the twentieth embodiment, refer to FIG. 74B for astigmatic aberration in the sagittal direction, refer to FIG. 74C for astigmatic aberration in the meridional direction, and refer to FIG. 74C for distortion aberration Figure 74D. The optical imaging lens 1 of the twentieth embodiment is substantially similar to the thirteenth embodiment, and the difference between the two is as follows: The optical imaging lens 1 further includes a seventh lens 70. The seventh lens 70 is provided between the third lens 30 and the diaphragm 80. The material of the seventh lens 70 is plastic. The seventh lens 70 has an object side surface 71 facing the object side 2 and an image side surface 72 facing the image side 3. The object side surface 71 of the seventh lens 70 has a concave surface portion 73 located near the optical axis and a convex surface portion 74' located near the circumference. The image side 72 of the seventh lens 70 has a convex portion 76 located in the area near the optical axis and a convex portion 77 located in the area near the circumference. Both the object side 71 and the image side 72 are aspherical. It can also be defined by the above formula (1), and will not be repeated here. Furthermore, the optical data, aspheric coefficients, and parameters between these lenses 10 to 60 are more or less different. It should be noted here that, in order to clearly display the drawing, the area near the optical axis and the vicinity of the circumference similar to the thirteenth embodiment are omitted in FIG. 73. The label of the area. In addition, regarding the definition of the relevant parameters of the seventh lens 70, reference may be made to the above paragraph, and a further definition is made: the distance between the image side 32 of the third lens 30 and the object side 71 of the seventh lens 70 on the optical axis 4 is G37. The distance from the image side 72 of the seventh lens 70 to the object side 41 of the fourth lens 40 on the optical axis 4 is G74. And AAG=G12+G23+G37+T7+G74+G45+G56.

The detailed optical data of the twentieth embodiment is shown in FIG. 91, and the aspherical data is shown in FIG. 92, where the system image height=2.240 mm; EFL=0.966 mm; HFOV=104.500 degrees; TTL=12.470 mm ; Fno=2.100.

With reference to FIGS. 74A to 74D, the diagram of FIG. 74A illustrates the longitudinal spherical aberration of the twentieth embodiment, and the diagrams of FIGS. 74B and 74C respectively illustrate the twentieth embodiment when the wavelengths are 470 nm, 555 nm, and 650 nm. At the imaging surface 91, the curvature of field in the sagittal direction and the curvature of the field in the meridional direction are shown in the graph of FIG. 74D, which illustrates the twentieth embodiment when the wavelength is 470nm, 555nm, and 650nm. On the distortion aberration. In the longitudinal spherical aberration diagram in FIG. 74A of the twentieth embodiment, the curve formed by each wavelength is very close and close to the middle, indicating that the off-axis light rays of different wavelengths and different heights are concentrated near the imaging point. It can be seen from the deflection amplitude of the curve of one wavelength that the deviation of the imaging point of off-axis rays of different heights is controlled within ±0.015 mm, so the twentieth embodiment does significantly improve the spherical aberration of the same wavelength. In addition, The distances between the three representative wavelengths are also quite close to each other, and the imaging positions representing the light of different wavelengths have been quite concentrated, so that the chromatic aberration is also significantly improved.

In the two field curvature aberration diagrams of FIG. 74B and FIG. 74C, the focal length variation of the three representative wavelengths in the entire field of view falls within ±0.07 mm, indicating that this second The optical system of the tenth embodiment can effectively eliminate aberrations. The distortion aberration diagram of FIG. 74D shows that the distortion aberration of the twentieth embodiment remains within ±100%, indicating that the distortion aberration of the twentieth embodiment has met the imaging quality requirements of the optical system. According to this, compared with the existing optical lens, the twentieth embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 14.055 mm.

Twenty-first embodiment

Please refer to FIG. 75 to illustrate the twenty-first embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 91 of the twenty-first embodiment, please refer to FIG. 76A, the astigmatic aberration in the sagittal direction please refer to FIG. 76B, the astigmatic aberration in the meridional direction please refer to FIG. 76C, and the distortion aberration please Refer to Figure 76D. The optical imaging lens 1 of the twenty-first embodiment is substantially similar to the twentieth embodiment, and the difference between the two is as follows: The optical imaging lens 1 of the twenty-first embodiment further includes an eighth lens 8. The eighth lens 8 is the fourth lens having a refractive power from the aperture 80 to the image side 3 times. Alternatively, the eighth lens 8 is provided between the sixth lens 60 and the filter 90. The eighth lens 8 has an object side surface 81 facing the object side 2 and an image side surface 82 facing the image side 3. The object side 81 of the eighth lens 8 has a convex surface 83 located in the area near the optical axis and a concave surface 84 located in the area near the circumference. The image side 82 of the eighth lens 8 has a convex portion 86 located in the area near the optical axis and a convex portion 87 located in the area near the circumference. Both the object side 81 and the image side 82 are aspherical. It can also be defined by the above formula (1), and will not be repeated here. The object side surface 31 of the third lens 30 has a convex surface portion 33' located near the optical axis. The image side 62 of the sixth lens 60 has a concave portion 67' located in a region near the circumference. The image side 72 of the seventh lens 70 has a region located near the circumference The concave part 77’. In addition, the optical data, aspheric coefficients, and parameters of these lenses from 10 to 70 are more or less different. It should be noted here that, in order to clearly display the drawing, the reference numerals of the areas near the optical axis and the areas near the circumference similar to the twentieth embodiment are omitted in FIG. 75.

For the twenty-first embodiment, T8 is the center thickness of the eighth lens 8 position on the optical axis 4. In the optical imaging lens 1 on the optical axis 4, the sum of the central thicknesses of all lenses with refractive power is called ALT, that is, ALT=T1+T2+T3+T4+T5+T6+T7+T8.

In addition, redefining: f8 is the focal length of the eighth lens 8; n8 is the refractive index of the eighth lens 80; υ 8 is the Abbe coefficient of the eighth lens 8. The distance from the image side 62 of the sixth lens 60 to the object side 81 of the eighth lens 8 on the optical axis 4 is G68, and the image side 82 of the eighth lens 8 to the object side 92 of the filter 90 on the optical axis 4 The distance is G8F.

The detailed optical data of the twenty-first embodiment is shown in FIG. 93, and the aspherical data is shown in FIG. 94, where the system image height=2.240 mm; EFL=0.969 mm; HFOV=104.500 degrees; TTL=14.055 mm Centigrade; Fno=2.100.

With reference to FIGS. 76A to 76D, the diagram of FIG. 76A illustrates the longitudinal spherical aberration of the twenty-first embodiment, and the diagrams of FIGS. 76B and 76C respectively illustrate the twenty-first embodiment when the wavelengths are 470 nm and 555 nm. At 650 nm, the curvature of field in the sagittal direction and the curvature of field in the meridional direction on the imaging plane 91 are shown. The graph of FIG. 76D illustrates the twenty-first embodiment when the wavelengths are 470 nm, 555 nm, and 650 nm. Distortion aberration on the imaging plane 91. Graphic illustration of longitudinal spherical aberration in the twenty-first embodiment In 76A, the curve formed by each wavelength is very close and close to the middle, indicating that the off-axis light rays of different heights of each wavelength are concentrated near the imaging point. The deflection amplitude of the curve of each wavelength can be seen that the difference The deviation of the imaging point of the highly off-axis light is controlled within the range of ±0.375 mm, so the twenty-first embodiment does significantly improve the spherical aberration of the same wavelength. In addition, the three representative wavelengths are also very close to each other. The imaging positions of different wavelengths of light have been quite concentrated, so that the chromatic aberration is also significantly improved.

In the two field curvature aberration diagrams of FIG. 76B and FIG. 76C, the focal length variation of the three representative wavelengths in the entire field of view falls within ±0.08 mm, indicating that the optical system of the twenty-first embodiment can Effectively eliminate aberrations. The distortion aberration diagram of FIG. 76D shows that the distortion aberration of the twenty-first embodiment remains within ±100%, indicating that the distortion aberration of the twenty-first embodiment has met the imaging quality of the optical system According to the requirements, according to this description, compared with the existing optical lens, the twenty-first embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 14.055 mm.

In addition, the important parameters of the thirteenth to twenty-first embodiments are arranged in FIG. 95, FIG. 96, FIG. 97, and FIG. 98, respectively.

First, in Figures 95 and 96, the units of the corresponding values in the fields "Fno", "V1" to "V8" are dimensionless, the units of the corresponding values in the field "Half-FOV" are degrees, and the other columns The value corresponding to the bit is mm.

Next, in Figures 97 and 98, the corresponding values in the fields "y at 0.8 field of view", "y at 0.8716 field", "BFL", "ALT", "AAG", "TL", "TTL" The unit is mm. The fields "ω corresponding to intake at 0.8 viewing place" and "at 0.8716 The unit of the corresponding value of ω corresponding to intake according to the place is degree. The values corresponding to other fields are dimensionless.

Please refer to Figure 58A, Figure 58B, Figure 97 and Figure 98. In the field "ω corresponding to intake at 0.8 viewing place", the meaning represented is that the image sensor can correspond to intake at 0.8 times viewing place The half angle of the image. The column "corresponding intake of ω at 0.8716 viewing location" and so on.

On the other hand, in the field "y in 0.8 field of view", the meaning it represents is: the image height corresponding to the image sensor in the field of view 0.8 times. The field "y in 0.8716 field of view" is the same.

For the following conditional expressions, at least one of the purposes is to maintain the system focal length and optical parameters at an appropriate value, to avoid any parameter is too large for the correction of the overall aberration of the optical imaging system, or to avoid any parameter Too small to affect assembly or increase the difficulty of manufacturing.

For the conditional expression that satisfies (EFL+AAG+BFL)/ALT≦1.500, it is preferably limited to 0.800≦(EFL+AAG+BFL)/ALT≦1.500.

For the conditional expression that satisfies (EFL*Fno+T4)/ImgH≦2.100, it is preferably limited to 1.000≦(EFL*Fno+T4)/ImgH≦2.100.

For the following conditional expressions, at least one of the purposes is to maintain the thickness and interval of each lens at an appropriate value, to avoid any parameter that is too large to be conducive to the overall thinning of the optical imaging lens, or to avoid any parameter that is too small to affect Assemble or increase the difficulty of manufacturing.

For the conditional expression that meets TL/ALT≦3.500, the limit is preferably 1.260 ≦TL/ALT≦3.500.

For the conditional expression that satisfies (G12+G45+T5+G56)/T1≦2.900, it is preferably limited to 0.800≦(G12+G45+T5+G56)/T1≦2.900.

For the conditional expression that satisfies (G45+G56+T5+T6)/G23≦4.300, it is preferably limited to 0.710≦(G45+G56+T5+T6)/G23≦4.300.

For the conditional expression that meets (G34+G45+T4+T5)/T1≦10.400, it is preferably limited to 2.730≦(G34+G45+T4+T5)/T1≦10.400

For the conditional expression that satisfies (G34+G45+T3+T6)/T2≦7.300, it is preferably limited to 0.970≦(G34+G45+T3+T6)/T2≦7.300.

For the conditional expression that satisfies (G23+G34+G45+T5)/T1≦6.000, it is preferably limited to 3.500≦(G23+G34+G45+T5)/T1≦6.000.

For the conditional expression that satisfies TTL/ALT≦2.500, it is preferably limited to 1.650≦TTL/ALT≦2.500.

For the conditional expression that satisfies (G12+G45+T5+G56)/T4≦6.100, it is preferably limited to 1.100≦(G12+G45+T5+G56)/T4≦6.100.

For the conditional expression that satisfies (G45+G56+T4+T6)/G23≦3.300, it is preferably limited to 0.690≦(G45+G56+T4+T6)/G23≦3.300.

For the conditional expression that satisfies (G34+G45+T3+T6)/T1≦6.500, it is preferably limited to 1.200≦(G34+G45+T3+T6)/T1≦6.500.

For the conditional expression that satisfies (G34+G45+T4+T5)/T2≦6.850, it is preferably limited to 1.900≦(G34+G45+T4+T5)/T2≦6.850.

For the conditional expression (G23+G34+G45+T6)/T1≦10.000, compare The good land limit is 0.915≦(G23+G34+G45+T6)/T1≦10.000.

In view of the unpredictability of the optical system design, under the framework of the present invention, meeting the above conditional formula can better shorten the lens length of the present invention, increase the available aperture, improve the imaging quality, or improve the assembly yield to improve the previous Technical shortcomings.

In addition, any combination of the parameters of the embodiments can be selected to increase the lens limit, which is beneficial to the lens design of the same architecture of the present invention. In view of the unpredictability of the design of the optical system, under the framework of the present invention, satisfying the above-mentioned conditional expressions can better shorten the system length, improve the imaging quality, or improve the assembly yield of the optical imaging lens 10 of the embodiment of the present invention And improve the shortcomings of the previous technology. The above-mentioned exemplary limited relational expressions can also be selectively combined in unequal numbers and applied to the implementation of the present invention, which is not limited thereto. In addition to the aforementioned relationship, additional details such as the arrangement of concave and convex curved surfaces of other lenses can be additionally designed for a single lens or broadly for multiple lenses to enhance control of system performance and/or resolution. It should be noted that these details need to be selectively applied to other embodiments of the present invention without conflict.

The numerical ranges including the maximum and minimum values obtained by the combined proportional relationship of the optical parameters disclosed in the embodiments of the present invention can be implemented accordingly.

In addition, any combination of the parameters of the embodiments can be selected to increase the lens limit, which is beneficial to the lens design of the same architecture of the present invention.

In summary, the optical imaging lens 10 of the embodiment of the present invention can achieve the following functions and advantages:

1. The longitudinal spherical aberration, astigmatic aberration, and distortion of the embodiments of the present invention are consistent Combined use specifications. In addition, the three off-axis rays of red, green, and blue wavelengths at different heights are concentrated near the imaging point. From the deflection amplitude of each curve, it can be seen that the deviation of the imaging point of off-axis rays of different heights is controlled and has Good ability to suppress spherical aberration, aberration and distortion. Further referring to the imaging quality data, the distances of the three representative wavelengths of red, green, and blue are also very close to each other, showing that the embodiments of the present invention have good concentration of light of different wavelengths under various conditions and have excellent dispersion suppression capabilities. Therefore, it can be seen from the above that the present invention has good optical performance.

2. The imaging circle IC of the optical imaging lens 1 of the present invention has an inscribed rectangular RT with an aspect ratio of 4:3. The reference line HL parallel to the long side LE of the inscribed rectangle RT corresponds to an image with a field of view greater than or equal to 175° and less than or equal to 188°, and the diagonal line DL of the rectangle RT corresponds to an intake of greater than or equal to 209° and less than or equal to 234 °Image of the field of view. For an image sensor with an aspect ratio of 4:3, the horizontal angle of view corresponding to it is greater than or equal to 175 degrees to achieve no dead angle in the horizontal direction, and at the same time, the four corners of the image sensor have imaging light intake reaching the four corners of the image sensor No vignetting effect.

3. The ratio of the field of view corresponding to the angle of view corresponding to the diagonal line DL and the field of view corresponding to the angle of view corresponding to the reference line HL is 1:0.8, which is beneficial to the horizontal view without dead angle and aspect ratio 4: 3 There are no dark corners in the four corners of the image sensor.

4. The imaging circle IC of the optical imaging lens 1 of the present invention has an inscribed rectangular RT with an aspect ratio of 16:9. The reference line HL parallel to the long side LE of the inscribed rectangular RT corresponds to an image with a field of view greater than or equal to 176° and less than or equal to 201°, and the diagonal line DL of the rectangular RT corresponds to an intake of greater than or equal to 205° and equal to or less than 232 ° The image of the field of view. For the image sensor with an aspect ratio of 16:9, the horizontal viewing angle is greater than 176 degrees to achieve no horizontal blind angle in the horizontal direction, and at the same time, the four corners of the image sensor have imaging light intake to reach the four corners of the image sensor without vignetting effect.

5. The ratio of the field of view corresponding to the angle of view taken by the diagonal line DL and the field of view corresponding to the angle of view taken by the reference line HL is 1: 0.8716, which is beneficial to the horizontal view without a blind spot and the aspect ratio of 16:9 There are no dark corners in the four corners of the image sensor.

6. When the aperture 80 is satisfied between the third lens 30 and the fourth lens 40, the first lens 10 has a negative refractive power, the second lens 20 has a negative refractive power, and the third lens 30 has a positive refractive power, the first The object side surface 31 of the three lens 30 has a concave surface portion 34 located in the vicinity of the circumference. The isometric combination is advantageous: at least three lenses in front of the aperture are used for ultra-wide-angle light collection, and at least three lenses behind the aperture are used to correct chromatic aberration and astigmatism The aberration maintains a certain imaging quality, and the preferable surface shape is limited to that the object side surface 31 of the third lens 3 has a concave surface portion 33 located in a region near the optical axis.

7. Among the three lenses after the aperture 80, a group of aspherically cemented lens groups is conducive to improving imaging quality such as chromatic aberration and astigmatism.

8. When the optical imaging lens 1 satisfies the conditional expression 3.5≦(V1+V2)/V3≦6 and the above restrictions in this case, it is beneficial to correct the chromatic aberration of the first three lenses.

9. When the optical imaging lens 1 satisfies the conditional expression of 3.5≦(V1+V4)/V3≦6 and the above restrictions in this case, it is beneficial to correct the chromatic aberration of the first four lenses.

10. As the performance of image processing improves, distortion aberrations are more easily corrected by image processing and the cost of image processing gradually decreases. The optical imaging lens 1 of the embodiment of the present invention adopts a design with an approximately equal proportional relationship between the image height y and the half angle of view ω to achieve the advantages of no blind angle in the horizontal direction and no dark corners in the four corners of the image sensor. Although the distortion aberration is worse than the existing lens, but with real-time image processing, images with extremely low distortion aberration can be obtained in real time. For example, the optical imaging lens 1 of the thirteenth to twenty-first embodiments of the present invention satisfies the following conditional expression: 0.900≦y/(EFL*ω)≦1.300, where ω is the angle at which the optical imaging lens 1 takes in different angles Half angle of view, and y is the image height corresponding to each half angle of view, where ω is calculated in radians, which can be regarded as unitless, so y/(EFL*ω) can be regarded as unitless, or the unit is radian ^-1 . The image height y of the optical imaging lens 1, the half angle of view ω (in degrees), the half angle of view ω (in radians) and their corresponding values of y/(EFL*ω) (ω in this value is in radians The numerical value is calculated) and the corresponding relationship is shown in Fig. 99 to Fig. 101. When the optical imaging lens 1 satisfies 0.900≦y/(EFL*ω)≦1.300, it is beneficial to realize the design of the approximately equal relationship between the image height y and the half angle of view ω.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

1‧‧‧Optical imaging lens

2‧‧‧ Object side

3‧‧‧ Image side

4‧‧‧ Optical axis

10‧‧‧ First lens

20‧‧‧Second lens

30‧‧‧third lens

40‧‧‧ fourth lens

50‧‧‧ fifth lens

60‧‧‧Sixth lens

80‧‧‧ Aperture

90‧‧‧ filter

91‧‧‧Imaging surface

11, 21, 31, 41, 51, 61

12, 22, 32, 42, 52, 62

13, 14, 23, 24, 36, 37, 43, 44, 46, 47, 63, 64, 66, 67

16, 17, 26, 27, 33, 34, 53, 54, 56, 57

Claims (20)

An optical imaging lens includes a first lens, a second lens, a third lens, an aperture, a fourth lens, a fifth lens and a first lens in order from an object side to an image side along an optical axis Six lenses, and each of the first lens to the sixth lens includes an object side facing the object side and passing the imaging light and an image side facing the image side and passing the imaging light, wherein the first lens is The first lens with refractive power from the object side to the image side; the second lens is the second lens with refractive power from the object side to the image side; the third lens is The third lens with refractive power from the object side to the image side; the fourth lens is the first lens with refractive power from the aperture to the image side; the fifth lens is from The second lens with refractive power from the aperture to the image side; the sixth lens is the third lens with refractive power from the aperture to the image side, wherein, one of the optical imaging lenses The imaging circle has an inscribed rectangle with an aspect ratio of 4:3. A reference line passing through the center of the imaging circle and parallel to any long side of the rectangle corresponds to a viewing angle greater than or equal to 175° and less than or equal to 188° Of the image, and the diagonal of the rectangle corresponds to a viewing angle greater than or equal to 209° and less than or equal to 234° Image, wherein the reference line extends from one short side of the rectangle to the other short side of the rectangle, and the length of the reference line is equal to the length of any long side of the rectangle. The optical imaging lens as described in item 1 of the patent scope, wherein the ratio of the field of view corresponding to the angle of view corresponding to the diagonal line and the field of view corresponding to the angle of view corresponding to the reference line is 1:0.8 . An optical imaging lens includes a first lens, a second lens, a third lens, an aperture, a fourth lens, a fifth lens and a first lens in order from an object side to an image side along an optical axis Six lenses, and each of the first lens to the sixth lens includes an object side facing the object side and passing the imaging light and an image side facing the image side and passing the imaging light, wherein the first lens is The first lens with refractive power from the object side to the image side; the second lens is the second lens with refractive power from the object side to the image side; the third lens is A third lens having refractive power from the object side to the image side, the third lens has positive refractive power, and the object side of the third lens has a concave surface portion located in a region near the optical axis; The fourth lens is the first lens with refractive power from the aperture to the image side; the fifth lens is the second lens with refractive power from the aperture to the image side; the first The six lens is the third lens with refractive power from the aperture to the image side, Wherein, an imaging circle of the optical imaging lens has an inscribed rectangle with an aspect ratio of 16:9, and a reference line passing through a center of the imaging circle and parallel to any long side of the rectangle corresponds to an intake greater than or equal to Images with a viewing angle of 176° and less than or equal to 201°, and a diagonal line of the rectangle corresponding to images with a viewing angle of greater than or equal to 205° and less than or equal to 232°, wherein the reference line extends from a short side of the rectangle to the rectangle The other short side, and the length of the reference line is equal to the length of any long side of the rectangle. The optical imaging lens described in item 1 or 3 of the patent scope, wherein the optical imaging lens satisfies the following conditional expression: 0.900≦y/(EFL*ω)≦1.300, where EFL is a system focal length of the optical imaging lens , Ω is a half angle of view taken by the optical imaging lens at different angles, and y is an image height corresponding to each half angle of view. The optical imaging lens as described in Item 1 or Item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: 3.500≦(V1+V2)/V3≦6.000, where V1 is a part of the first lens Abbe coefficient, V2 is an Abbe coefficient of the second lens, and V3 is an Abbe coefficient of the third lens. The optical imaging lens as described in Item 1 or Item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: TL/ALT≦1.820, where TL is the object side of the first lens to the sixth A distance of the image side of the lens on the optical axis, and ALT is the sum of a central thickness of all lenses with refractive power on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (EFL+AAG+BFL)/ALT≦1.500, EFL is the system focal length of the optical imaging lens, AAG is the first lens and A distance on the optical axis between the second lens, a distance on the optical axis between the second lens and the third lens, and an optical axis between the third lens and the fourth lens The sum of a distance above, a distance between the fourth lens and the fifth lens on the optical axis, and a distance between the fifth lens and the sixth lens on the optical axis, BFL is The length of the image side to an imaging plane of the sixth lens on the optical axis, and ALT is the total thickness of all lenses with refractive power on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G12+G45+T5+G56)/T1≦3.500, G12 is the first lens and the A distance between the second lenses on the optical axis, G45 is a distance between the fourth lens and the fifth lens on the optical axis, T5 is a center of the fifth lens on the optical axis Thickness, G56 is a distance between the fifth lens and the sixth lens on the optical axis, and T1 is a center thickness of the first lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G45+G56+T5+T6)/G23≦2.900, G45 is the fourth lens and the A distance between the fifth lens on the optical axis, G56 is a distance between the fifth lens and the sixth lens on the optical axis, T5 is a thickness of the fifth lens on the optical axis , T6 is a thickness of the sixth lens on the optical axis, and G23 is a distance between the second lens and the third lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G34+G45+T4+T5)/T1≦ 4.300, G34 is a distance between the third lens and the fourth lens on the optical axis, G45 is a distance between the fourth lens and the fifth lens on the optical axis, T4 is the first A center thickness of the four lenses on the optical axis, T5 is a center thickness of the fifth lens on the optical axis, and T1 is a center thickness of the first lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G34+G45+T3+T6)/T2≦10.400, G34 is the third lens and the A distance between the fourth lens on the optical axis, G45 is a distance between the fourth lens and the fifth lens on the optical axis, T3 is a center of the third lens on the optical axis Thickness, T6 is a central thickness of the sixth lens on the optical axis, and T2 is a central thickness of the second lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G23+G34+G45+T5)/T1≦7.300, G23 is the second lens and the A distance between the third lens on the optical axis, G34 is a distance between the third lens and the fourth lens on the optical axis, G45 is a distance between the fourth lens and the fifth lens For a distance on the optical axis, T5 is a central thickness of the fifth lens on the optical axis, and T1 is a central thickness of the first lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: 3.500≦(V1+V4)/V3≦6.000, V1 is an Abbe of the first lens Coefficient, V4 is an Abbe coefficient of the fourth lens, and V3 is an Abbe coefficient of the third lens. The optical imaging lens as described in item 1 or item 3 of the patent application range, wherein the optical imaging lens satisfies the following conditional expression: TTL/ALT≦2.500, TTL is the object side of the first lens to an imaging plane at the A distance on the optical axis, and ALT is the sum of the central thickness of all lenses with refractive power on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (EFL*Fno+T4)/ImgH≦2.100, EFL is a system focal length of the optical imaging lens , Fno is the aperture value of the optical imaging lens, T4 is a center thickness of the fourth lens on the optical axis, and ImgH is a maximum image height of the optical imaging lens. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G12+G45+T5+G56)/T4≦6.100, G12 is the first lens and the A distance between the second lenses on the optical axis, G45 is a distance between the fourth lens and the fifth lens on the optical axis, T5 is a center of the fifth lens on the optical axis Thickness, G56 is a distance between the fifth lens and the sixth lens on the optical axis, and T4 is a center thickness of the fourth lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G45+G56+T4+T6)/G23≦3.300, G45 is the fourth lens and the A distance between the fifth lens on the optical axis, G56 is a distance between the fifth lens and the sixth lens on the optical axis, T4 is a center of the fourth lens on the optical axis Thickness, T6 is the sixth lens in the light A central thickness on the axis, and G23 is a distance between the second lens and the third lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G34+G45+T3+T6)/T1≦6.500, G34 is the third lens and the A distance between the fourth lens on the optical axis, G45 is a distance between the fourth lens and the fifth lens on the optical axis, T3 is a center of the third lens on the optical axis Thickness, T6 is a central thickness of the sixth lens on the optical axis, and T1 is a central thickness of the first lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G34+G45+T4+T5)/T2≦6.850, G34 is the third lens and the A distance between the fourth lens on the optical axis, G45 is a distance between the fourth lens and the fifth lens on the optical axis, T4 is a center of the fourth lens on the optical axis Thickness, T5 is a central thickness of the fifth lens on the optical axis, and T2 is a central thickness of the second lens on the optical axis. The optical imaging lens as described in item 1 or item 3 of the patent application scope, wherein the optical imaging lens satisfies the following conditional expression: (G23+G34+G45+T6)/T1≦10.000, G23 is the second lens and the A distance between the third lens on the optical axis, G34 is a distance between the third lens and the fourth lens on the optical axis, G45 is a distance between the fourth lens and the fifth lens For a distance on the optical axis, T6 is a central thickness of the sixth lens on the optical axis, and T1 is a central thickness of the first lens on the optical axis.

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