CN207181795U - Eyeglass module - Google Patents
Eyeglass module Download PDFInfo
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- CN207181795U CN207181795U CN201721143948.8U CN201721143948U CN207181795U CN 207181795 U CN207181795 U CN 207181795U CN 201721143948 U CN201721143948 U CN 201721143948U CN 207181795 U CN207181795 U CN 207181795U
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Abstract
A kind of eyeglass module is the utility model is related to, including the first eyeglass, aperture, the second eyeglass and the 3rd eyeglass of side arranged in sequence are laterally imaged from object；First eyeglass has a negative index, including the side of the object of convex and spill into image side surface；Second eyeglass has a positive refracting power, including the side of the object of convex and convex into image side surface；The side of the object of 3rd eyeglass including convex and spill into image side surface.
Description
Technical field
The utility model is related to a kind of eyeglass module, be more specifically related to it is a kind of have be made up of three eyeglasses and can
To obtain the eyeglass module of the micro-optics system compared with wide viewing angle.
Background technology
Generally, whether closed-circuit television (CCTV) mobile communication terminal, or computer, notebook computer, vehicle and
Virtual reality (Virtual Reality, VR) device etc., it is equipped with the camera of display or shooting surrounding image information.It is such
Camera has the characteristics of portability and miniaturization, however, for example such camera is applied in mobile communication terminal or
When on vehicle, its miniaturization and lightweight are not required nothing more than, also require that it provides wide viewing angle and the image of high image quality；And for example will be such
Camera is applied when on virtual reality device, it is necessary to which its offer surmounts plane picture and the image with more wide viewing angle, therefore
The high image quality camera of offer wide viewing angle is provided.
Patent document KR 10-1639325 (B1) disclose a kind of broad angle lens system being made up of five eyeglasses, and it can
To provide 125 degree to 127 degree of visual angle.
Utility model content
The purpose of this utility model is have wider visual angle to solve the above problems, offer is a kind of and can provide
The eyeglass module of high resolution image.
A kind of eyeglass module, including be laterally imaged from object the first eyeglass of side arranged in sequence, aperture, the second eyeglass and
3rd eyeglass；
First eyeglass has a negative index, including the side of the object of convex and spill into image side surface；
Second eyeglass has a positive refracting power, including the side of the object of convex and convex into image side surface；
The side of the object of 3rd eyeglass including convex and spill into image side surface；
The focal length f of the eyeglass module and first eyeglass focal length f1 meet：0.6<│f/f1│<1.0.F/f1 is represented
The ratio between the focal length of whole eyeglass module and the focal length of the first eyeglass, the ratio is set to exceed higher limit when the refractive index of eyeglass reduces
When, it is not easy to obtain required visual angle, when the refractive index increase of eyeglass makes the ratio exceed lower limit, due to the first eyeglass
Refractive index is excessive, is not easy aberration correction.
In one of the embodiments, the focal length f of the eyeglass module and second eyeglass focal length f2 meet：0.7<
│f/f2│<1.0.F/f2 represents the ratio between the focal length of whole eyeglass module and the focal length of the second eyeglass, when the refractive index of eyeglass reduces
When making the ratio exceed higher limit, it is not easy to obtain clearly image, under the refractive index increase of eyeglass exceedes the ratio
During limit value, aberration correction is not easy.
In one of the embodiments, the radius of curvature R 11 of the side of the object of first eyeglass and first eyeglass
The radius of curvature R 12 into image side surface meet：1.4<(R11+R12)/(R11-R12)<2.0.
The side of the object of first eyeglass and into image side surface radius of curvature sum and radius of curvature difference control in 1.4-2.0
In the range of, it is possible to achieve fine adjustment aberration.
In one of the embodiments, the angle of visual field FOV of the eyeglass module meets：FOV>145°.
Above-mentioned eyeglass module can obtain the wide viewing angle with more than 145 degree.
In one of the embodiments, the angle of visual field FOV of the eyeglass module and the first eyeglass side of the object into
The distance TTL along optical axis of image planes meets：FOV/TTL>20.
When visual angle (FOV) and the ratio of the total length of eyeglass module are less than FOV/TTL lower limit, the total length of eyeglass module
Can be excessive, so as to hinder the miniaturization of eyeglass module.
In one of the embodiments, the angle of visual field FOV of the eyeglass module and the eyeglass module focal length f meet：
FOV/f>85。
When the ratio of visual angle and the focal length of eyeglass module is less than FOV/f lower limit, focal length can be elongated, away from image sensing
The distance of device can become miniaturization that is big, and then can hindering eyeglass module.It is described according to one of embodiment of the present utility model
When the angle of visual field FOV of eyeglass module and the eyeglass module focal length f meet FOV/f ＞ 85, it can obtain with wide viewing angle
Microminiature eyeglass module.
In one of the embodiments, distance SL of the first eyeglass side of the object to aperture along optical axis and described the
Distance TTL of the side of the object of one eyeglass to imaging surface along optical axis meets：0.25<SL/TTL<0.35.
By adjusting the position of aperture, accurate, clearly image can be obtained.
In one of the embodiments, the entrance pupil diameter EPD of the eyeglass module and first eyeglass object side
Distance TTL of the face to imaging surface along optical axis meets：0.10<EPD/TTL<0.13.
Because the total length of entrance pupil diameter and eyeglass module has ratio as described above, therefore can provide with outstanding picture
Poor characteristic, and the eyeglass module of accurate, accurate image can be obtained.
In one of the embodiments, the 3rd eyeglass has positive refracting power.
In one of the embodiments, first eyeglass, the second eyeglass and the 3rd eyeglass are made up of plastic material.
Eyeglass module of the present utility model has wider visual angle and can provide high resolution image, can apply to virtual
In the infrared imaging optical system such as reality, gesture identification, outstanding optical property can also be played near infrared ray field, also
It can apply in the camera module in visible rays field.
Brief description of the drawings
Fig. 1 is the eyeglass modular structure figure provided according to first embodiment of the present utility model；
Fig. 2 is the modulation transfer function (MTF of the eyeglass module in the first embodiment shown in Fig. 1：Modulation
Transfer Function) figure；
Fig. 3 is the aberration figure of the eyeglass module in the first embodiment shown in Fig. 1；
Fig. 4 is the eyeglass modular structure figure provided according to second embodiment of the present utility model；
Fig. 5 is the MTF figures of the eyeglass module in the second embodiment shown in Fig. 4；
Fig. 6 is the aberration figure of the eyeglass module in the second embodiment shown in Fig. 4；
Fig. 7 is the eyeglass modular structure figure provided according to 3rd embodiment of the present utility model；
Fig. 8 is the MTF figures of the eyeglass module in the 3rd embodiment shown in Fig. 7；
Fig. 9 is the aberration figure of the eyeglass module in the 3rd embodiment shown in Fig. 7；
Figure 10 is the eyeglass modular structure figure provided according to fourth embodiment of the present utility model；
Figure 11 is the MTF figures of the eyeglass module in the fourth embodiment shown in Figure 10；
Figure 12 is the aberration figure of the eyeglass module in the fourth embodiment shown in Figure 10.
Embodiment
Embodiment of the present utility model can have a variety of changes, can have a variety of different embodiments, below in conjunction with attached
Figure describes embodiment of the present utility model in detail.But the utility model is not limited to the scope that following embodiments limit, and should also wrap
Include all deformations, equivalent and the sub in the item and technical scope recorded.To reality of the present utility model
When applying example and illustrating, the explanation that the common knowledge obscured is produced to purpose of utility model of the present utility model can be omitted.This reality
Following embodiments are not limited to new, the eyeglass module that first, second, third and fourth embodiment as example provide
It is shown in Fig. 1, Fig. 4, Fig. 7 and Figure 10.The utility model is illustrated below based on Fig. 1 first embodiment, however, right
The structure of each eyeglass and the explanation of feature are also applied for other embodiment.That is, the utility model is not limited to the description below, can root
Enter line translation according to specific application conditions.
As shown in figure 1, according to first embodiment of the present utility model, eyeglass module (10) includes laterally being imaged side from object
The first eyeglass (11), aperture (S), the second eyeglass (12) and the 3rd eyeglass (13) of arranged in sequence.
Eyeglass module of the present utility model can include the imaging optical system being made up of three eyeglasses.That is, eyeglass module
It can be made up of the first to the 3rd eyeglass and aperture.However, eyeglass module is not limited to the situation for only including three eyeglasses and aperture,
Other composed components can also be included as needed.For example, as shown in figure 1, eyeglass module can also be included to imaging side direction
The optical filter (IF) of arranged in sequence and the imaging surface (IP) including imaging sensor.
Therefore, the image of object is incident to after the first eyeglass (11), the second eyeglass (12) and the 3rd eyeglass (13)
On imaging surface (IP) provided with imaging sensor.Described image sensor can include solid imaging device, such as charge-coupled device
Part (CCD：Charged Coupled Device) and complementary metal oxide semiconductor (CMOS：Complementary
Metal-Oxide Semiconductor), but it is not limited thereto, other that use in the art can also be used
All kinds of imaging sensors.
First eyeglass (11), the second eyeglass (12) and the 3rd eyeglass (13) can be by plastic material or glass materials
Matter is made.In one of embodiment of the present utility model, first eyeglass (11), the second eyeglass (12) and the 3rd mirror
Piece (13) is made by plastic material.Using embodiment of the present utility model lens structure and aligning method when, even if adopting
With the eyeglass made of plastic material, it is also possible to obtain have the eyeglass module of wide viewing angle.Therefore can provide lighter and resistance to
The eyeglass module that long property protrudes.
More than one in first eyeglass (11), the second eyeglass (12) and the 3rd eyeglass (13) can be aspherical mirror
Piece.In one of embodiment of the present utility model, the second eyeglass (12) and the 3rd eyeglass (13) can be aspherical lens.
Therefore can provide with wide viewing angle and the outstanding eyeglass module of aberration characteristic.
Fig. 1 is the sketch of the eyeglass module provided according to first embodiment of the present utility model, is understood with reference to figure 1, described
First eyeglass (11) has a negative index, and the side of the object (11a) with convex and spill into image side surface (11b).Whereby
The visual angle of whole eyeglass can be increased, so as to obtain the eyeglass having compared with wide viewing angle.
Visual angle is increased by first eyeglass (11), incident light can be made to minimize and by eyeglass module, the first mirror
The negative index of piece is bigger, and its visual angle then can be bigger, but when its numerical value is excessive, is not easy aberration correction.
According to first embodiment of the present utility model, first eyeglass (11) can meet following【Formula 1】.
【Formula 1】0.6<│f/f1│<1.0
Wherein, f is the focal length of whole eyeglass module, and f1 is the focal length of first eyeglass.【Formula 1】Represent whole eyeglass
The ratio between focal length of the focal length of module and the first eyeglass, when the refractive index of eyeglass, which reduces, the ratio is exceeded higher limit, it is not easy
Visual angle needed for obtaining, when the refractive index increase of eyeglass makes the ratio exceed lower limit, due to the refractive index of the first eyeglass
It is excessive, it is not easy aberration correction.
Second eyeglass (12) has a positive refracting power, and the side of the object (12a) with convex and convex into image side
Face (12b).Second eyeglass (12) plays a part of light harvesting, and can meet following【Formula 2】.
【Formula 2】0.7<│f/f2│<1.0
Wherein, f2 is the focal length of second eyeglass (12).【Formula 2】Represent the focal length and the second mirror of whole eyeglass module
The ratio between focal length of piece (12), when the refractive index of eyeglass, which reduces, makes the ratio exceed higher limit, it is not easy to obtain clearly image,
When the refractive index increase of eyeglass makes the ratio exceed lower limit, aberration correction is not easy.
According to one of embodiment of the present utility model, the first eyeglass (11) and the second eyeglass (12) can meet following
【Formula 3】.
【Formula 3】1.4<(R11+R12)/(R11-R12)<2.0
Wherein, R11 is the radius of curvature of the side of the object (11a) of the first eyeglass, and R12 is the first eyeglass into image side surface
The radius of curvature of (11b).Can be with fine adjustment aberration by the radius of curvature in above range.
3rd eyeglass (13) have convex side of the object (13a) and spill into image side surface (13b).3rd eyeglass
(13) and the second eyeglass (12) aberration correction together, clearly image can be obtained whereby.
In one of embodiment of the present utility model, the 3rd eyeglass (13) can have positive refracting power, but not
It is confined to this.
Based on the structure of the above-mentioned first to the 3rd eyeglass, in one of embodiment of the present utility model, eyeglass module
It can meet following【Formula 4】.
【Formula 4】FOV>145°
Wherein, FOV is the visual angle of eyeglass module.According to one of embodiment of the present utility model, by with as above
The structure of three described eyeglasses, the eyeglass module with more than 145 degree wide viewing angles can be obtained.
In one of embodiment of the present utility model, eyeglass module can meet following【Formula 5】.
【Formula 5】FOV/TTL>20
Wherein, TTL is from the side of the object (11a) of the first eyeglass to the distance along optical axis (X) of imaging surface (IP), its generation
The total length of watch mirror piece module.That is, the ratio of the total length of visual angle (FOV) and eyeglass module can meet above-mentioned【Formula 5】, when its is low
In【Formula 5】In lower limit when, the total length of eyeglass module can be excessive, so as to hinder the miniaturization of eyeglass module.According to this reality
With new one of embodiment, microminiature, the eyeglass module of wide viewing angle can be provided.
According to one of embodiment of the present utility model, eyeglass module can meet following【Formula 6】.
【Formula 6】FOV/f>85
Wherein, FOV is visual angle, and f is the focal length of eyeglass module.That is, the ratio of the focal length of visual angle and eyeglass module can be expired
Foot is above-mentioned【Formula 6】, when it is less than【Formula 6】In lower limit when, focal length can be elongated, and the distance away from imaging sensor can become
Greatly, and then the miniaturization of eyeglass module can be hindered.It is above-mentioned by meeting according to one of embodiment of the present utility model【It is public
Formula 6】, the microminiature eyeglass module with wide viewing angle can be obtained.
In one embodiment of the present utility model, it can be set between first eyeglass (11) and the second eyeglass (12)
Aperture (S) (stop).Aperture is used for the light quantity for adjusting eyeglass module.Accurate image can be obtained by the regulation of light quantity.
In one embodiment of the present utility model, the aperture (S) can meet following【Formula 7】.
【Formula 7】0.25<SL/TTL<0.35
Wherein, SL is the distance along optical axis (X) from the side of the object (11a) of the first eyeglass to aperture (S), TTL be from
The side of the object (11a) of first eyeglass to imaging surface (IP) the distance along optical axis (X).In eyeglass module of the present utility model
In, by adjusting aperture (S) position, accurate, clearly image can be obtained.
First eyeglass (11) and aperture (S) can meet following【Formula 8】.
【Formula 8】0.10<EPD/TTL<0.13
Wherein, EPD (Entrance Pupil Diameter) is the entrance pupil diameter of eyeglass module, and TTL is from the first mirror
The side of the object (11a) of piece to imaging surface (IP) the distance along optical axis (X).In one of embodiment of the present utility model
In, because the total length of entrance pupil diameter and eyeglass module has ratio as described above, therefore can provide special with outstanding aberration
Property, and the eyeglass module of accurate, accurate image can be obtained.
In summary, according to one of embodiment of the present utility model, can provide with wide viewing angle, and can obtain
The microminiature eyeglass module of high resolution image.
The eyeglass module provided according to one of embodiment of the present utility model, can apply to virtual reality, gesture
In the infrared imaging optical systems such as identification, outstanding optical property can also be played near infrared ray field, can also be applied
In the camera module in visible rays field.Eyeglass module in the utility model is applied to more technical fields and can obtained excellent
Elegant optical property.
Eyeglass modular structure of the present utility model and effect will hereafter be carried out specifically by specific embodiment
Explanation.
What is used in each of the embodiments described below is aspherical, has by known【Formula 10】The conic section of acquisition
(Conic) constant (K) and asphericity coefficient (A, B, C, D, E, F, G, H).In addition, it is following numeral in, " E with and subsequent number
Word " represents 10 power.Such as in one embodiment, E-05 represents 10-5。
【Formula 10】
Z：From eyeglass summit to the distance of optical axis direction；
R：Along the distance perpendicular to optical axis direction
α：The inverse (α=1/radius) of radius of curvature on the summit of eyeglass；
K：Conic constant；
A、B、C、D、E、F、G、H：Asphericity coefficient.
【Embodiment 1】
【Table 1】Extremely【Table 3】The eyeglass module as shown in Figure 1 provided according to first embodiment of the present utility model is provided
(10) data.Eyeglass module in first embodiment includes the first eyeglass (11), aperture (S), the second eyeglass (12) and the
Three eyeglasses (13), in addition to optical filter (IF) and imaging surface (IP) to imaging side direction arranged in sequence.
Following face numberings refer to the numbering in the face of each eyeglass shown in Fig. 1.【Table 1】In, * represents aspherical,【Table 2】Show
The conic constant and asphericity coefficient of second eyeglass (12) and the 3rd eyeglass (13).
In the following description, radius of curvature (R), thickness (t), the unit of focal length (f) are mm.
【Table 1】
【Table 2】
| Number in face | 12a | 12b | 13a | 13b |
| Conic constant (K) | -2.3364.E+00 | -9.4796.E-01 | -6.3526.E-01 | -4.4443.E+00 |
| 4 ordered coefficients (A) | -5.4975.E-02 | 7.3933.E-02 | 7.2512.E-02 | 6.2751.E-02 |
| 6 ordered coefficients (B) | 6.8878.E-02 | -1.7350.E-01 | -1.1904.E-01 | -3.6374.E-03 |
| 8 ordered coefficients (C) | -9.4585.E-01 | 1.3849.E-01 | 8.7829.E-02 | -3.7746.E-02 |
| 10 ordered coefficients (D) | 4.5352.E+00 | -5.3648.E-02 | -5.4691.E-02 | 1.9305.E-02 |
| 12 ordered coefficients (E) | -1.1757.E+01 | -1.4080.E-02 | 1.8949.E-02 | -4.0536.E-03 |
| 14 ordered coefficients (F) | 1.5940.E+01 | 2.4162.E-02 | -3.0010.E-03 | 3.3518.E-04 |
| 16 ordered coefficients (G) | -1.0677.E+01 | -9.6647.E-03 | 9.1963.E-20 | 9.1964.E-20 |
| 18 ordered coefficients (H) | 2.7792.E+00 | 1.0670.E-03 |
【Table 3】
| f | 1.6891 | |f/f1| | 0.73 |
| f1 | -2.33 | |f/f2| | 0.88 |
| f2 | 1.91 | (R11+R12)/(R11-R12) | 1.48 |
| f3 | 78.74 | FOV/TTL | 21.31 |
| TTL | 6.98 | FOV/f | 88.06 |
| 2y | 4.80 | SL/TTL | 0.31 |
| fno | 2 | EPD/TTL | 0.12 |
| FOV | 148.75 |
Understood with reference to figure 1, first eyeglass (11) has a negative index, and the side of the object (11a) including convex and
Spill into image side surface (11b).Second eyeglass (12) has a positive refracting power, and the side of the object (12a) including convex and
Convex into image side surface (12b).3rd eyeglass (13) has a positive refracting power, and the side of the object (13a) including convex and
Spill into image side surface (13b).
In the above-described first embodiment, the f-number F of eyeglass module (10)n0For 2, visual angle (FOV) is 148.75 degree, eyeglass
The total length of module is 6.98mm.In addition, with reference to【Table 3】Understand, the eyeglass module in above-mentioned first embodiment can meet above-mentioned
【Formula 1】Extremely【Formula 8】.
That is, according to first embodiment of the present utility model, it is possible to achieve microminiature mirror of the visual angle more than 140 degree
Piece module.
Fig. 2 is the MTF figures of the eyeglass module (10) in first embodiment, it include by image be divided into multiple sections and with
Each section is the MTF figures that unit is drawn.With the spatial frequency increase in each section, responsiveness can be with more slow slope
Drop.In the first embodiment, relative to final spatial frequency, responsiveness maximum have dropped 0.4 or so, thus can obtain compared with
For clearly image.
In addition, Fig. 3 shows spherical aberration, astigmatism and the distortion aberration of the eyeglass module (10) in first embodiment.
Understood by reference to Fig. 3, according to first embodiment of the present utility model, can provide various aberration characteristics all outstanding eyeglass mould
Group.
In summary, it can be provided with wide viewing angle by first embodiment and the microminiature mirror of clear image quality can be obtained
Piece module.
【Embodiment 2】
【Table 4】Extremely【Table 6】The eyeglass module as shown in Figure 4 provided according to second embodiment of the present utility model is provided
(20) data.Eyeglass module (20) in second embodiment include the first eyeglass (21), aperture (S), the second eyeglass (22) with
And the 3rd eyeglass (23), in addition to optical filter (IF) and imaging surface (IP) to imaging side direction arranged in sequence.
Following face numberings refer to the numbering in the face of each eyeglass shown in Fig. 4.【Table 4】In, * represents aspherical,【Table 5】Show
The conic constant and asphericity coefficient of second eyeglass (22) and the 3rd eyeglass (23).
In the following description, radius of curvature (R), thickness (t), the unit of focal length (f) are mm.
【Table 4】
【Table 5】
| Number in face | 22a | 22b | 23a | 23b |
| Conic constant (K) | 2.2609.E+00 | -7.5340.E-01 | -8.5032.E-02 | -4.0418.E-01 |
| 4 ordered coefficients (A) | -4.3424.E-02 | 5.2261.E-02 | -1.8472.E-03 | -5.3581.E-02 |
| 6 ordered coefficients (B) | 7.7758.E-02 | -1.0655.E-01 | -6.6076.E-02 | 4.4050.E-02 |
| 8 ordered coefficients (C) | -9.7859.E-01 | 9.4472.E-02 | 6.4306.E-02 | -4.3731.E-02 |
| 10 ordered coefficients (D) | 4.5736.E+00 | -4.2799.E-02 | -4.9202.E-02 | 1.9437.E-02 |
| 12 ordered coefficients (E) | -1.1757.E+01 | -1.4080.E-02 | 1.8949.E-02 | -4.0536.E-03 |
| 14 ordered coefficients (F) | 1.5940.E+01 | 2.4162.E-02 | -3.0010.E-03 | 3.3518.E-04 |
| 16 ordered coefficients (G) | -1.0677.E+01 | -9.6647.E-03 | 3.1339.E-24 | 3.1339.E-24 |
| 18 ordered coefficients (H) | 2.7792.E+00 | 1.0670.E-03 |
【Table 6】
| f | 1.6512 | |f/f1| | 0.64 |
| f1 | -2.59 | |f/f2| | 0.90 |
| f2 | 1.84 | (R11+R12)/(R11-R12) | 1.83 |
| f3 | -20.67 | FOV/TTL | 21.43 |
| TTL | 6.95 | FOV/f | 90.22 |
| 2y | 4.80 | SL/TTL | 0.31 |
| fno | 2 | EPD/TTL | 0.11 |
| FOV | 148.96 |
Understood with reference to figure 4, first eyeglass (21) has a negative index, and the side of the object (21a) including convex and
Spill into image side surface (21b).Second eyeglass (22) has a positive refracting power, and the side of the object (22a) including convex and
Convex into image side surface (22b).3rd eyeglass (23) has a negative index, and the side of the object (23a) including convex and
Spill into image side surface (23b).
In above-mentioned second embodiment, the f-number F of eyeglass module (20)n0For 2, visual angle (FOV) is 148.96 degree, eyeglass
The total length of module is 6.95mm.In addition, with reference to【Table 6】Understand, the eyeglass module in above-mentioned second embodiment can meet above-mentioned
【Formula 1】Extremely【Formula 8】.
That is, according to second embodiment of the present utility model, it is possible to achieve microminiature mirror of the visual angle more than 145 degree
Piece module.
Fig. 5 is the MTF figures of the eyeglass module (20) in second embodiment, it include by image be divided into multiple sections and with
Each section is the MTF figures that unit is drawn.With the spatial frequency increase in each section, responsiveness can be with more slow slope
Drop.In a second embodiment, relative to final spatial frequency, responsiveness maximum have dropped 0.5 or so, thus can obtain compared with
For clearly image.
In addition, Fig. 6 shows spherical aberration, astigmatism and the distortion aberration of the eyeglass module (20) in second embodiment.
Understood by reference to Fig. 6, according to second embodiment of the present utility model, can provide various aberration characteristics all outstanding eyeglass mould
Group.
In summary, it can be provided with wide viewing angle by second embodiment and the microminiature mirror of clear image quality can be obtained
Piece module.
【Embodiment 3】
【Table 7】Extremely【Table 9】The eyeglass module as shown in Figure 7 provided according to 3rd embodiment of the present utility model is provided
(30) data.Eyeglass module (30) in 3rd embodiment include the first eyeglass (31), aperture (S), the second eyeglass (32) with
And the 3rd eyeglass (33), in addition to optical filter (IF) and imaging surface (IP) to imaging side direction arranged in sequence.
Following face numberings refer to the numbering in the face of each eyeglass shown in Fig. 7.【Table 7】In, * represents aspherical,【Table 8】Show
The conic constant and asphericity coefficient of second eyeglass (32) and the 3rd eyeglass (33).
In the following description, radius of curvature (R), thickness (t), the unit of focal length (f) are mm.
【Table 7】
【Table 8】
| Number in face | 32a | 32b | 33a | 33b |
| Conic constant (K) | -8.0118.E-01 | -7.5174.E-01 | -1.9361.E-01 | 5.4287.E-02 |
| 4 ordered coefficients (A) | -4.8788.E-02 | 3.6203.E-02 | 4.8532.E-02 | 4.0617.E-02 |
| 6 ordered coefficients (B) | 4.6124.E-02 | -1.2384.E-01 | -8.7983.E-02 | 7.4244.E-03 |
| 8 ordered coefficients (C) | -8.3545.E-01 | 1.1072.E-01 | 7.3753.E-02 | -3.9033.E-02 |
| 10 ordered coefficients (D) | 4.4450.E+00 | -4.6366.E-02 | -5.1282.E-02 | 1.9053.E-02 |
| 12 ordered coefficients (E) | -1.1757.F+01 | -1.4080.E-02 | 1.8949.E-02 | -4.0536.E-03 |
| 14 ordered coefficients (F) | 1.5940.E+01 | 2.4162.E-02 | -3.0010.E-03 | 3.3518.E-04 |
| 16 ordered coefficients (G) | -1.0677.E+01 | -9.6647.E-03 | 7.3570.E-23 | 7.3570.E-23 |
| 18 ordered coefficients (H) | 2.7792.E+00 | 1.0670.E-03 |
【Table 9】
| f | 1.675 | |f/f1| | 0.71 |
| f1 | -2.36 | |f/f2| | 0.81 |
| f2 | 2.08 | (R11+R12)/(R11-R12) | 1.63 |
| f3 | 13.72 | FOV/TTL | 21.64 |
| TTL | 6.88 | FOV/f | 88.90 |
| 2y | 4.80 | SL/TTL | 0.30 |
| fno | 2 | EPD/TTL | 0.12 |
| FOV | 148.91 |
Understood with reference to figure 7, first eyeglass (31) has a negative index, and the side of the object (31a) including convex and
Spill into image side surface (31b).Second eyeglass (32) has a positive refracting power, and the side of the object (32a) including convex and
Convex into image side surface (32b).3rd eyeglass (33) has a positive refracting power, and the side of the object (33a) including convex and
Spill into image side surface (33b).
In above-mentioned 3rd embodiment, the f-number F of eyeglass module (30)n0For 2, visual angle (FOV) is 148.91 degree, eyeglass
The total length of module is 6.88mm.In addition, with reference to【Table 9】Understand, the eyeglass module in above-mentioned 3rd embodiment can meet above-mentioned
【Formula 1】Extremely【Formula 8】.
That is, according to 3rd embodiment of the present utility model, it is possible to achieve microminiature mirror of the visual angle more than 145 degree
Piece module.
Fig. 8 is the MTF figures of the eyeglass module (30) in 3rd embodiment, it include by image be divided into multiple sections and with
Each section is the MTF figures that unit is drawn.With the spatial frequency increase in each section, responsiveness can be with more slow slope
Drop.In the third embodiment, relative to final spatial frequency, responsiveness maximum have dropped 0.5 or so, thus can obtain compared with
For clearly image.
In addition, Fig. 9 shows spherical aberration, astigmatism and the distortion aberration of the eyeglass module (30) in 3rd embodiment.
Understood by reference to Fig. 9, according to 3rd embodiment of the present utility model, can provide various aberration characteristics all outstanding eyeglass mould
Group.
In summary, it can be provided with wide viewing angle by 3rd embodiment and the microminiature mirror of clear image quality can be obtained
Piece module.
【Embodiment 4】
【Table 10】Extremely【Table 12】The eyeglass as shown in Figure 10 provided according to fourth embodiment of the present utility model is provided
The data of module (40).Eyeglass module (40) in fourth embodiment includes the first eyeglass (41), aperture (S), the second eyeglass
And the 3rd eyeglass (43), in addition to optical filter (IF) and imaging surface (IP) to imaging side direction arranged in sequence (42).
Following face numberings refer to the numbering in the face of each eyeglass shown in Figure 10.【Table 10】In, * represents aspherical,【Table 11】
Show the conic constant and asphericity coefficient of the second eyeglass (42) and the 3rd eyeglass (43).
In the following description, radius of curvature (R), thickness (t), the unit of focal length (f) are mm.
【Table 10】
【Table 11】
| Number in face | 42a | 42b | 43a | 43b |
| Conic constant (K) | -2.3853.E+00 | -9.0242.E-01 | -5.8077.E-01 | 2.0329.E+00 |
| 4 ordered coefficients (A) | -6.2513.E-02 | 7.1132.E-02 | 7.2698.E-02 | 3.0725.E-03 |
| 6 ordered coefficients (B) | 9.5109.E-02 | -1.4958.E-01 | -1.1354.E-01 | 2.2373.E-02 |
| 8 ordered coefficients (C) | -9.9349.E-01 | 1.1635.E-01 | 8.3986.E-02 | -4.4364.E-02 |
| 10 ordered coefficients (D) | 4.5077.E+00 | -4.6728.E-02 | -5.4159.E-02 | 1.9967.E-02 |
| 12 ordered coefficients (E) | -1.1757.E+01 | -1.4080.E-02 | 1.8949.E-02 | -4.0536.E-03 |
| 14 ordered coefficients (F) | 1.5940.E+01 | 2.4162.E-02 | -3.0010.E-03 | 3.3518.E-04 |
| 16 ordered coefficients (G) | -1.0677.E+01 | -9.6647.E-03 | -6.4501.E-20 | -6.4534.E-20 |
| 18 ordered coefficients (H) | 2.7792.E+00 | 1.0670.E-03 |
【Table 12】
| f | 1.6562 | |f/f1| | 0.73 |
| f1 | -2.27 | |f/f2| | 0.94 |
| f2 | 1.77 | (R11+R12)/(R11-R12) | 1.81 |
| f3 | 312.73 | FOV/TTL | 22.06 |
| TTL | 6.77 | FOV/f | 90.21 |
| 2y | 4.80 | SL/TTL | 0.29 |
| fno | 2.1 | EPD/TTL | 0.12 |
| FOV | 149.40 |
Understood with reference to figure 10, first eyeglass (41) has a negative index, and the side of the object (41a) including convex and
Spill into image side surface (41b).Second eyeglass (42) has a positive refracting power, and the side of the object (42a) including convex and
Convex into image side surface (42b).3rd eyeglass (43) has a positive refracting power, and the side of the object (43a) including convex and
Spill into image side surface (43b).In the fourth embodiment, the first eyeglass (41), the second eyeglass (42) and the 3rd eyeglass (43)
It is both designed to aspherical.
In above-mentioned fourth embodiment, the f-number F of eyeglass module (40)n0For 2.1, visual angle (FOV) is 149.40 degree, mirror
The total length of piece module is 6.77mm.In addition, with reference to【Table 12】Understand, the eyeglass module in above-mentioned fourth embodiment can meet
State【Formula 1】Extremely【Formula 8】.
That is, according to fourth embodiment of the present utility model, it is possible to achieve microminiature mirror of the visual angle more than 145 degree
Piece module.
Figure 11 is the MTF figures of the eyeglass module (40) in fourth embodiment, and it includes image being divided into multiple sections simultaneously
The MTF figures drawn in units of each section.With the spatial frequency increase in each section, responsiveness can be with more slow slope
Drop.In the fourth embodiment, relative to final spatial frequency, responsiveness maximum have dropped 0.4 or so, thus can obtain compared with
For clearly image.
In addition, Figure 12 shows spherical aberration, astigmatism and the distortion aberration of the eyeglass module (40) in fourth embodiment.
Understood by reference to Figure 12, according to fourth embodiment of the present utility model, can provide various aberration characteristics all outstanding eyeglass
Module.
In summary, it can be provided with wide viewing angle by fourth embodiment and the microminiature mirror of clear image quality can be obtained
Piece module.
Claims (9)
1. a kind of eyeglass module, including laterally it is imaged from object the first eyeglass, aperture, the second eyeglass and of side arranged in sequence
Three eyeglasses；
First eyeglass has a negative index, including the side of the object of convex and spill into image side surface；
Second eyeglass has a positive refracting power, including the side of the object of convex and convex into image side surface；
The side of the object of 3rd eyeglass including convex and spill into image side surface；
Characterized in that, the focal length f of the eyeglass module and first eyeglass focal length f1 meet：0.6<│f/f1│<1.0.
2. eyeglass module according to claim 1, it is characterised in that the focal length f of the eyeglass module and second mirror
The focal length f2 of piece meets：0.7<│f/f2│<1.0.
3. eyeglass module according to claim 1, it is characterised in that the radius of curvature of the side of the object of first eyeglass
R11 and first eyeglass radius of curvature R 12 into image side surface meet：1.4<(R11+R12)/(R11-R12)<2.0.
4. eyeglass module according to claim 1, it is characterised in that the angle of visual field FOV of the eyeglass module meets：FOV>
145°。
5. eyeglass module according to claim 1, it is characterised in that the angle of visual field FOV of the eyeglass module and described the
The distance TTL of one eyeglass side of the object to imaging surface along optical axis meets：FOV/TTL>20.
6. eyeglass module according to claim 1, it is characterised in that the angle of visual field FOV of the eyeglass module and the mirror
The focal length f of piece module meets：FOV/f>85.
7. eyeglass module according to claim 1, it is characterised in that the first eyeglass side of the object to aperture is along light
The side of the object of the distance SL of axle and first eyeglass meets to the distance TTL along optical axis of imaging surface：0.25<SL/TTL<
0.35。
8. eyeglass module according to claim 1, it is characterised in that the entrance pupil diameter EPD of the eyeglass module and institute
The side of the object of the first eyeglass is stated to the distance TTL satisfactions along optical axis of imaging surface：0.10<EPD/TTL<0.13.
9. eyeglass module according to claim 1, it is characterised in that：
3rd eyeglass has positive refracting power.
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| CN201721143948.8U CN207181795U (en) | 2017-09-07 | 2017-09-07 | Eyeglass module |
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| CN201721143948.8U CN207181795U (en) | 2017-09-07 | 2017-09-07 | Eyeglass module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109196519A (en) * | 2018-08-21 | 2019-01-11 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal device |
| CN109471238A (en) * | 2017-09-07 | 2019-03-15 | 南昌欧菲光电技术有限公司 | Eyeglass mould group |
| CN110488461A (en) * | 2019-08-16 | 2019-11-22 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
| CN111273423A (en) * | 2018-12-04 | 2020-06-12 | 新巨科技股份有限公司 | Three-piece infrared single-wavelength lens group |
| EP3809182A4 (en) * | 2019-03-14 | 2021-09-08 | Shenzhen Goodix Technology Co., Ltd. | Lens assembly and fingerprint recognition module |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471238A (en) * | 2017-09-07 | 2019-03-15 | 南昌欧菲光电技术有限公司 | Eyeglass mould group |
| CN109196519A (en) * | 2018-08-21 | 2019-01-11 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal device |
| CN109196519B (en) * | 2018-08-21 | 2020-11-17 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal equipment |
| US11366290B2 (en) | 2018-08-21 | 2022-06-21 | Shenzhen GOODIX Technology Co., Ltd. | Lens system, fingerprint identification apparatus and terminal device |
| CN111273423A (en) * | 2018-12-04 | 2020-06-12 | 新巨科技股份有限公司 | Three-piece infrared single-wavelength lens group |
| CN111273423B (en) * | 2018-12-04 | 2021-12-21 | 新巨科技股份有限公司 | Three-piece infrared wavelength lens group |
| EP3809182A4 (en) * | 2019-03-14 | 2021-09-08 | Shenzhen Goodix Technology Co., Ltd. | Lens assembly and fingerprint recognition module |
| CN110488461A (en) * | 2019-08-16 | 2019-11-22 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
| WO2021031284A1 (en) * | 2019-08-16 | 2021-02-25 | 诚瑞光学(常州)股份有限公司 | Photographing optical lens |
| CN110488461B (en) * | 2019-08-16 | 2021-04-23 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
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Effective date of registration: 20210618 Address after: 330096 no.1404, Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi Jinghao optics Co.,Ltd. Address before: 330013 Nanchang, Jiangxi economic and Technological Development Zone, east of lilac Road, north of Longtan canal. Patentee before: NANCHANG OFILM OPTICAL-ELECTRONIC TECH Co.,Ltd. Patentee before: Suzhou OFilm Tech. Co.,Ltd. |