CN107966798A - Short focus projection objective - Google Patents
Short focus projection objective Download PDFInfo
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- CN107966798A CN107966798A CN201810042916.1A CN201810042916A CN107966798A CN 107966798 A CN107966798 A CN 107966798A CN 201810042916 A CN201810042916 A CN 201810042916A CN 107966798 A CN107966798 A CN 107966798A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
A kind of short focus projection objective, includes successively from exit end to source ends：The first lens group with negative power, the 3rd eyeglass with positive light coke, diaphragm, the 3rd lens group with positive light coke, prism and the imaging surface with solid-state imager.The present invention uses minimum number of lenses, and introducing plastic cement is aspherical, have devised high pixel, small distortion, small aberration, small size, light weight, the short focus projection objective of no temperature drift, suitable for various complex environments such as 40 DEG C Dao+80 DEG C similar vehicle-mounted projections and handheld projectors.
Description
Technical field
The present invention relates to a kind of technology in optics field, is specifically a kind of short focus projection objective.
Background technology
Existing projection camera lens, because being designed without considering many actual the problem of carrying in use, such as 1. body
Product is excessive：Most of existing projection objective, its length and bore are all bigger, cause after design phase projector's fuselage with
And corresponding auxiliary facility when, have to product overall dimensions being all made bigger to cater to its size.Which results in
It can not be applied to portable projector and vehicle-mounted micro projecting apparatus using these projection objectives.2. weight is excessive：Conventional
Projection lens, in order to which achromatism and reducing distorts, usually by adding number of lenses come improving performance, this is virtually improved
The weight of camera lens entirety so that the portability of camera lens substantially reduces, and is typically only capable in fixed occasion use, can not flexibly more
Change field of employment.3. focal length is grown, projection is than big：Existing major part camera lens, all remains the number of lenses in design in the past
It is more, complicated, the characteristics of focal length is long.Which results in the product projection using these object lens than big, that is to say, that identical
Projector distance when the picture smaller that can project.This characteristic also limit the use scope of product, such as this small in compartment
The projecting apparatus of this kind of focal length can not be just used in space.4. operating temperature range is small：Conventional projection objective design when often
Athermal is not accounted for, it is highly unstable in the performance of high/low temperature which results in its camera lens.Due to mechanism material and eyeglass material
The physical characteristic of material itself, it at different temperature can have an impact the trend of light path so that and focal plane shifts,
Empty burnt phenomenon is produced, so as to cause the fuzzy pictures that are projected out unclear, influences to use.So most of production in existing market
The operating temperature of product all in the range of this, can not much adapt to use in extraneous complex environment at 0 to 40 degrees Celsius.In addition,
Existing product is not produced because the performance gap that temperature change produces to ensure camera lens, it will usually design it is corresponding a whole set of
Cooling system, this also in a disguised form adds small product size and weight.
The content of the invention
The present invention is directed to deficiencies of the prior art, a kind of short focus projection objective is proposed, using minimum eyeglass
Quantity, it is aspherical to introduce plastic cement, have devised high pixel, small distortion, small aberration, small size, light weight, no temperature drift
Short focus projection objective, suitable for various complex environments such as -40 DEG C to+80 DEG C similar vehicle-mounted projections and handheld projectors.
The present invention is achieved by the following technical solutions：
The present invention includes successively from exit end to source ends：The first lens group with negative power, with positive light coke
The 3rd eyeglass, diaphragm, have positive light coke the 3rd lens group, prism and the imaging surface with solid-state imager.
The total length of the short focus projection objective and the ratio of effective focal length are (15,20), optic back focal and effectively Jiao
Away from ratio be (3,5), the ratio of image planes height and effective focal length is (1,1.3).
The focal length of first lens group and the ratio of the effective focal length of short focus projection objective are (- 2.6, -1.2), with
Ensure control distortion while big field angle.
The focal length of 3rd eyeglass and the ratio of the effective focal length of short focus projection objective are (3,5), effectively correct ball
Difference and coma.
The focal length of 3rd lens group and the ratio of the effective focal length of short focus projection objective are (2.5,3.4), effectively
Correct aberration and the curvature of field.
First lens group includes：The first eyeglass with negative power and the second eyeglass with negative power.
3rd lens group, including the 4th eyeglass with positive light coke, the five, the 6th glue with negative power
Close eyeglass and the 7th eyeglass with positive light coke.
The focal length of 4th eyeglass and the focal length ratio of the second eyeglass are (- 3.5, -1.5), due to two control temperature
The aspherical proportional coefficient of focal length ratio of offset is spent, is able to mutually compensate for influence of the temperature change to light path performance.
6th eyeglass and the lens index variation with temperature rate of the 7th eyeglass are less than zero.
Technique effect
Compared with prior art, the present invention uses athermal design, the aspherical face type of two pieces of plastic cement of reasonable distribution and
Focal power, allows two pieces of aspherical influences in temperature changing process to light path to cancel out each other so that camera lens under high/low temperature not
It is empty burnt, to achieve the purpose that to use in more complex environments.
Brief description of the drawings
Fig. 1 is the semi-cutaway of embodiment 1 and embodiment 2；
Fig. 2 is each aberration diagram of embodiment 1；
Fig. 3 is the light chromaticity difference diagram of embodiment 1；
Fig. 4 is each aberration diagram of embodiment 2；
Fig. 5 is the light chromaticity difference diagram of embodiment 2；
Fig. 6 is the semi-cutaway of embodiment 3；
Fig. 7 is each aberration diagram of embodiment 3；
Fig. 8 is the light chromaticity difference diagram of embodiment 3；
In figure：L1~L7 is the first to the 7th eyeglass, S1~S19 is the first to the 19th lens, diaphragm and prism surface,
The radius of curvature that STP is diaphragm, P is prism, ICF is optical filter, IMG is image planes, " R " is each surface, and represents aspherical
" paraxial curvature "." D " represents surface spacing, and " Nd " represents the refractive index of d lines, and " Vd " represents Abbe number.In addition, thing
Away from for one meter.The unit of length measuring is " mm ".
Embodiment
Embodiment 1
As shown in Figure 1, the present embodiment includes：Including the first eyeglass L1 with negative power and with negative power
The first lens group of two eyeglass L2；The 3rd eyeglass L3 with positive light coke；Including the 4th eyeglass L4 with positive light coke,
The 3rd lens group of the five, the 6th cemented doublet L5, L6 with negative power and the 7th eyeglass L7 with positive light coke.
Wherein the second eyeglass and the 4th eyeglass are aspherical
Optical property parameter：Focal length F=2.8, relative aperture Fno=1.9, TR0.55.
| R | D | Nd | Vd | |
| OBJ | SPHERE | 120 | ||
| 1 | 17.35 | 1 | 1.77 | 49 |
| 2 | 7.97 | 3.1 | ||
| 3 | 24.08 | 1.6 | 1.52 | 56 |
| 4 | 4.55 | 13.3 | ||
| 5 | 17.5 | 5.6 | 1.84 | 23 |
| 6 | -22.5 | 2.0 | ||
| 7 | INF | 0.4 | ||
| 8 | -12.51 | 4.2 | 1.52 | 56 |
| 9 | -8.18 | 0.1 | ||
| 10 | -13.73 | 2.3 | 1.84 | 23 |
| 11 | 8.796 | 2.7 | 1.59 | 67 |
| 12 | -10.73 | 0.1 | ||
| 13 | 16.46 | 2.3 | 1.61 | 63 |
| 14 | -12.54 | 0.7 | ||
| 15 | INF | 10.00 | 1.74 | 37 |
| 16 | INF | 0.50 | ||
| 17 | INF | 0.70 | 1.52 | 60 |
| 18 | INF | 0.30 | ||
| 19 | INF | 0.00 | ||
| IMG |
In table symbol be P for non-spherical lens, the second surface S11 of the 5th eyeglass is the first table of the 6th eyeglass
Face.
The second eyeglass L2 and the 4th eyeglass L4 is non-spherical lens in the present embodiment, and wherein non-spherical lens sag values meet：
Wherein：Z be lens sag values, c
For the inverse of radius of curvature, h is lens side to the height of optical axis, and k is circular cone coefficient, and it is non-that A, B, C, D and E represent high-order respectively
Asphere coefficient.
The present embodiment asphericity coefficient is listed in the table below：
| #3 | #4 | #8 | #9 | |
| K | 0 | -1.0760832 | -66.806228 | -0.34275087 |
| A | 0.0008 | 0.0013645 | -0.0045063 | 0.000699656 |
| B | -2.31E-05 | -1.08E-05 | 0.00064336 | 1.022E-05 |
| C | 3.64E-07 | -1.04E-06 | -7.01E-05 | -5.23E-07 |
| D | -3.17E-09 | 3.20E-08 | 3.31E-06 | 1.88E-08 |
| E | 1.22E-11 | -3.56E-10 | 0 | 0 |
As shown in Fig. 2, be 1 each aberration diagram of embodiment, including axial chromatic aberration, the curvature of field and distortion.It can be seen from the figure that should
The axial chromatic aberration of tri- colors of camera lens RGB has obtained good correction, it is possible to achieve the clear projection of picture；Curvature of field curve can be seen
Go out, T lines and S lines have good convergence, and the curvature of field and astigmatism are very outstanding, ensure that whole picture is imaged homogeneous requirement；It is abnormal
Varied curve finds out that lens distortion control is fine, and optical distortion is within 1%.Fig. 3 is light chromaticity difference diagram, as shown in the figure, this reality
Apply example and good amendment has been carried out to the ratio chromatism, and coma of tri- colors of RGB, meet high pixel projection requirement.
Embodiment 2
As shown in Figure 1, be the half-sectional structure of the present embodiment, compared with Example 1, difference in this case is that Fno smallers,
TR is larger.
Optical property parameter：Focal length F=3, relative aperture Fno=1.7, TR0.6.
Symbol is P for non-spherical lens in table.
The present embodiment asphericity coefficient is listed in the table below：
| #3 | #4 | #8 | #9 | |
| K | 0 | -0.1760832 | -53.254 | -0.548977 |
| A | 0.5 | 0.0013645 | -0.0045063 | 0.00099656 |
| B | -3.31E-05 | -9.08E-06 | 0.00064336 | 2.15E-02 |
| C | 6.37E-07 | -1.04E-06 | -5.47E-05 | 2.35E-07 |
| D | -6.16E-09 | 3.20E-08 | 5.54E-06 | 7.12E-08 |
| E | 2.64E-11 | -3.56E-10 | 0 | 0 |
As shown in figure 4, be each aberration diagram of the present embodiment, including axial chromatic aberration, the curvature of field and distortion.It can be seen from the figure that
The axial chromatic aberration of tri- colors of camera lens RGB has obtained good correction, it is possible to achieve the clear projection of picture；Curvature of field curve can be with
Find out, T lines and S lines have good convergence, and the curvature of field and astigmatism are very outstanding, ensure that whole picture is imaged homogeneous requirement；
Distortion curve finds out that lens distortion control is fine, and optical distortion is within 1%.Fig. 5 is light chromaticity difference diagram, as shown in the figure, this
Embodiment has carried out good amendment to the ratio chromatism, and coma of tri- colors of RGB, meets high pixel projection requirement.
Embodiment 3
As shown in fig. 6, be the half-sectional structure of the present embodiment, compared with Example 1, the first eyeglass L1 in the present embodiment and
Four eyeglass L4 are aspherical.
Optical property parameter：Focal length F=3, relative aperture Fno=1.5, TR0.6.
Symbol is P for non-spherical lens in table.
The present embodiment asphericity coefficient is listed in the table below：
| #1 | #2 | #8 | #9 | |
| K | 0 | 0 | -55.254 | -0.648977 |
| A | 0.0004 | 0.00039 | -0.0046063 | 0.00069656 |
| B | -2.04E-06 | 1.95E-06 | 0.00052336 | 1.15E-05 |
| C | 8.25E-09 | 3.6E-08 | -5.047E-05 | 2.15E-07 |
| D | 3.02E-013 | -7.3E-10 | 2.28E-06 | 1.252E-08 |
| E | -1.26E-14 | -9.6E-12 | 0 | 0 |
As shown in fig. 7, be each aberration diagram of the present embodiment, including axial chromatic aberration, the curvature of field and distortion.It can be seen from the figure that
The axial chromatic aberration of tri- colors of camera lens RGB has obtained good correction, it is possible to achieve the clear projection of picture；Curvature of field curve can be with
Find out, T lines and S lines have good convergence, and the curvature of field and astigmatism are very outstanding, ensure that whole picture is imaged homogeneous requirement；
Distortion curve finds out that lens distortion control is fine, and optical distortion is within 1%.Fig. 8 is light chromaticity difference diagram, as shown in the figure, this
Embodiment has carried out good amendment to the ratio chromatism, and coma of tri- colors of RGB, meets high pixel projection requirement.
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation in the range of it is by the constraint of the present invention.
Claims (12)
1. a kind of short focus projection objective, it is characterised in that include successively from exit end to source ends：First with negative power
Lens group, the 3rd eyeglass with positive light coke, diaphragm, the 3rd lens group, the prism with positive light coke and with solid
The imaging surface of photographing element.
2. short focus projection objective according to claim 1, it is characterized in that, the total length of the short focus projection objective is with having
The ratio of effect focal length be (15,20), and the ratio of optic back focal and effective focal length is (3,5), image planes highly and effective focal length ratio
It is worth for (1,1.3).
3. short focus projection objective according to claim 1, it is characterized in that, focal length and the short focus of first lens group are thrown
The ratio of the effective focal length of shadow object lens is (- 2.6, -1.2).
4. short focus projection objective according to claim 1, it is characterized in that, focal length and the short focus of the 3rd eyeglass project
The ratio of the effective focal length of object lens is (3,5).
5. short focus projection objective according to claim 1, it is characterized in that, focal length and the short focus of the 3rd lens group are thrown
The ratio of the effective focal length of shadow object lens is (2.5,3.4).
6. short focus projection objective according to claim 1, it is characterized in that, first lens group includes：With negative light
First eyeglass of focal power and the second eyeglass with negative power, wherein arbitrarily a piece of is aspherical lens made of plastic cement.
7. short focus projection objective according to claim 1, it is characterized in that, the 3rd eyeglass is with positive light coke
3rd eyeglass.
8. short focus projection objective according to claim 1, it is characterized in that, the 3rd lens group, including with positive light
The 4th eyeglass, the five, the 6th cemented doublets with negative power and the 7th eyeglass with positive light coke of focal power, wherein the
Four eyeglasses are aspherical lens made of plastic cement.
9. short focus projection objective according to claim 1, it is characterized in that, the focal length and the second eyeglass of the 4th eyeglass
Focal length ratio be (- 3.5, -1.5), since the aspherical focal length ratio of two control temperature drifts is proportional, be able to mutually complementary
Repay influence of the temperature change to light path performance.
10. short focus projection objective according to claim 1, it is characterized in that, the mirror of the 6th eyeglass and the 7th eyeglass
Piece refractive index variation with temperature rate is less than zero.
11. short focus projection objective according to claim 1, it is characterized in that, the aspherical lens, its sag value meets：Wherein：C is the inverse of radius of curvature, and h is lens
Side is to the height of optical axis, and k is circular cone coefficient, and A, B, C, D and E represent order aspherical coefficients respectively.
12. the short focus projection objective according to any of the above-described claim, it is characterized in that, the short focus projection objective, tool
Body is any one following combination：
1. the first surface of the first eyeglass is sphere, its radius of curvature is 17.35, its thickness is 1, its refractive index is 1.77, its
Abbe number is 49；The second surface of first eyeglass is sphere, its radius of curvature is 7.97, its thickness is 3.1；The of second eyeglass
One surface is aspherical, its radius of curvature is 24.08, its thickness is 1.6, its refractive index is 1.52, its Abbe number is 56；Second
The second surface of eyeglass is aspherical, its radius of curvature is 4.55, its thickness is 13.3；The first surface of 3rd eyeglass is ball
Face, its radius of curvature are 17.5, its thickness is 5.6, its refractive index is 1.84, its Abbe number is 23；Second table of the 3rd eyeglass
Face is sphere, its radius of curvature is -22.5, its thickness is 2；The thickness of diaphragm is 0.4；The first surface of 4th eyeglass is aspheric
Face, its radius of curvature are -12.51, its thickness is 4.2, its refractive index is 1.52, its Abbe number is 56；The second of 4th eyeglass
Surface is aspherical, its radius of curvature is -8.18, its thickness is 0.1；The first surface of 5th eyeglass is sphere, its curvature is partly
Footpath is -13.73, its thickness is 2.3, its refractive index is 1.84, its Abbe number is 23；The second surface of 5th eyeglass is sphere,
Its radius of curvature is 8.796, its thickness is 2.7, its refractive index is 1.59, its Abbe number is 67；The second surface of 6th eyeglass
For sphere, its radius of curvature is -10.73, its thickness is 0.1；The first surface of 7th eyeglass is sphere, its radius of curvature is
16.46, its thickness is 2.3, its refractive index is 1.61, its Abbe number is 63；The second surface of 7th eyeglass is sphere, its curvature
Radius is -12.54, its thickness is 0.7；The thickness of the first surface of prism is 10, its refractive index is 1.74, its Abbe number is
37；The thickness of the second surface of prism is 0.5；The thickness of the first surface of optical filter is 0.7, its refractive index is 1.52, its Ah
Shellfish number is 60；The thickness of the second surface of optical filter is 0.3；The circular cone coefficient of the first surface of second eyeglass is 0, its quadravalence is non-
Asphere coefficient is 0.0008, its six ranks asphericity coefficient is -2.31E-05, its eight ranks asphericity coefficient is 3.64E-07, it ten
Rank asphericity coefficient is -3.17E-09, its ten second orders asphericity coefficient is 1.22E-11；The circular cone of the second surface of second eyeglass
Coefficient is -1.0760832, its quadravalence asphericity coefficient is 0.0013645, its six ranks asphericity coefficient is -1.08E-05, it eight
Rank asphericity coefficient is -1.04E-06, its ten ranks asphericity coefficient is 3.20E-08, its ten second orders asphericity coefficient for -
3.56E-10；The circular cone coefficient of the first surface of 4th eyeglass be -66.806228, its quadravalence asphericity coefficient for -
0.0045063, its six ranks asphericity coefficient is 0.00064336, its eight ranks asphericity coefficient is -7.01E-05, its ten ranks aspheric
Face coefficient is 3.31E-06, its ten second orders asphericity coefficient is 0；The circular cone coefficient of the second surface of 4th eyeglass for-
0.34275087, its quadravalence asphericity coefficient is 0.000699656, its six ranks asphericity coefficient is 1.02E-05, its eight rank is non-
Asphere coefficient is -5.23E-07, its ten ranks asphericity coefficient is 1.88E-08, its ten second orders asphericity coefficient is 0；
2. the first surface of the first eyeglass is sphere, its radius of curvature is 15.72, its thickness is 1, its refractive index is 1.69, its
Abbe number is 50；The second surface of first eyeglass is sphere, its radius of curvature is 7.95, its thickness is 3.5；The of second eyeglass
One surface is aspherical, its radius of curvature is 21.87, its thickness is 1.4, its refractive index is 1.5, its Abbe number is 56；Second
The second surface of eyeglass is aspherical, its radius of curvature is 4.84, its thickness is 12.44；The first surface of 3rd eyeglass is ball
Face, its radius of curvature are 23.16, its thickness is 3, its refractive index is 1.86, its Abbe number is 20；The second surface of 3rd eyeglass
For sphere, its radius of curvature is -16.86, its thickness is 1.31；The thickness of diaphragm is 0.4；The first surface of 4th eyeglass is non-
Sphere, its radius of curvature are -15, its thickness is 3, its refractive index is 1.56, its Abbe number is 56；The second surface of 4th eyeglass
To be aspherical, its radius of curvature is -8, its thickness is 0.1；The first surface of 5th eyeglass is sphere, its radius of curvature is -10,
Its thickness is 0.6, its refractive index is 1.8, its Abbe number is 23；The second surface of 5th eyeglass is sphere, its radius of curvature is
10, its thickness is 3, its refractive index is 1.62, its Abbe number is 63；The second surface of 6th eyeglass is sphere, its radius of curvature
For -8.32, its thickness is 0.1；The first surface of 7th eyeglass is sphere, its radius of curvature is 53.14, its thickness is 3, it is rolled over
It is 1.63 to penetrate rate, its Abbe number is 63；The second surface of 7th eyeglass is sphere, its radius of curvature is -9.94, its thickness is
0.8；The thickness of the first surface of prism is 10, its refractive index is 1.7, its Abbe number is 37；The thickness of the second surface of prism
For 0.5；The thickness of the first surface of optical filter is 0.7, its refractive index is 1.5, its Abbe number is 60；The second surface of optical filter
Thickness be 0.3；The circular cone coefficient of the first surface of second eyeglass is 0, its quadravalence asphericity coefficient is 0.5, its six ranks aspheric
Face coefficient is -3.31E-05, its eight ranks asphericity coefficient is 6.37E-07, its ten ranks asphericity coefficient is -6.16E-09, it ten
Second order asphericity coefficient is 2.64E-11；The circular cone coefficient of the second surface of second eyeglass is -0.1760832, its quadravalence aspheric
Face coefficient is 0.0013645, its six ranks asphericity coefficient is -9.08E-06, its eight ranks asphericity coefficient is -1.04E-06, its
Ten rank asphericity coefficients are 3.20E-08, its ten second orders asphericity coefficient is -3.56E-10；The circle of the first surface of 4th eyeglass
It is -53.254 to bore coefficient, its quadravalence asphericity coefficient is -0.0045063, its six ranks asphericity coefficient is 0.00064336, its
Eight rank asphericity coefficients are -5.47E-05, its ten ranks asphericity coefficient is 5.54E-06, its ten second orders asphericity coefficient is 0；The
The circular cone coefficient of the second surface of four eyeglasses is -0.548977, its quadravalence asphericity coefficient is 0.00099656, its six ranks aspheric
Face coefficient is 2.15E-02, its eight ranks asphericity coefficient is 2.35E-07, its ten ranks asphericity coefficient is 7.12E-08, it 12
Rank asphericity coefficient is 0；
3. the first surface of the first eyeglass is aspherical, its radius of curvature is 26.76, its thickness is 1.68, its refractive index is
1.525, its Abbe number is 56；The second surface of first eyeglass is aspherical, its radius of curvature is 8.64, its thickness is 5.87；
The first surface of second eyeglass is sphere, its radius of curvature is -155.2, its thickness is 0.8, its refractive index is 1.77, its Abbe
Number is 49；The second surface of second eyeglass is sphere, its radius of curvature is 7.43, its thickness is 14.27；The first of 3rd eyeglass
Surface is sphere, its radius of curvature is 11.87, its thickness is 2.93, its refractive index is 1.86, its Abbe number is 37；3rd mirror
The second surface of piece is sphere, its radius of curvature is -60.27, its thickness is 4.35；The thickness of diaphragm is 0.57；4th eyeglass
First surface to be aspherical, its radius of curvature is -11.2, its thickness is 4.73, its refractive index is 1.525, its Abbe number is
56；The second surface of 4th eyeglass is aspherical, its radius of curvature is -6.27, its thickness is 0.1；First table of the 5th eyeglass
Face is sphere, its radius of curvature is -9.96, its thickness is 0.5, its refractive index is 1.85, its Abbe number is 27；5th eyeglass
Second surface is sphere, its radius of curvature is 8.58, its thickness is 3.2, its refractive index is 1.59, its Abbe number is 63；6th
The second surface of eyeglass is sphere, its radius of curvature is -10.03, its thickness is 0.1；The first surface of 7th eyeglass is sphere,
Its radius of curvature is 16.52, its thickness is 3.08, its refractive index is 1.59, its Abbe number is 63；The second surface of 7th eyeglass
For sphere, its radius of curvature is -12.41, its thickness is 0.6；The thickness of the first surface of prism is 10, its refractive index is 1.7,
Its Abbe number is 37；The thickness of the second surface of prism is 0.5；The thickness of the first surface of optical filter is 0.7, its refractive index is
1.5, its Abbe number is 60；The thickness of the second surface of optical filter is 0.3；The circular cone coefficient of the first surface of first eyeglass is 0,
Its quadravalence asphericity coefficient is 0.0004, its six ranks asphericity coefficient is -2.04E-06, its eight ranks asphericity coefficient is 8.25E-
09, its ten ranks asphericity coefficient is 3.02E-13, its ten second orders asphericity coefficient is -1.26E-14；Second table of the first eyeglass
The circular cone coefficient in face is 0, its quadravalence asphericity coefficient is 0.00039, its six ranks asphericity coefficient is 1.95E-06, its eight rank is non-
Asphere coefficient is 3.60E-08, its ten ranks asphericity coefficient is -7.30E-10, its ten second orders asphericity coefficient is -9.60E-12；
The circular cone coefficient of the first surface of 4th eyeglass is -55.254, its quadravalence asphericity coefficient is -0.0046063, its six ranks aspheric
Face coefficient is 0.00052336, its eight ranks asphericity coefficient is -5.05E-05, its ten ranks asphericity coefficient is 2.28E-06, its
Ten second order asphericity coefficients are 0；The circular cone coefficient of the second surface of 4th eyeglass is -0.648977, its quadravalence asphericity coefficient
For 0.00069656, its six ranks asphericity coefficient is 1.15E-05, its eight ranks asphericity coefficient is 2.15E-07, its ten ranks aspheric
Face coefficient is 1.25E-08, its ten second orders asphericity coefficient is 0.
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Cited By (4)
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| CN110554476A (en) * | 2018-05-30 | 2019-12-10 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110794556A (en) * | 2019-11-01 | 2020-02-14 | 江西联创电子有限公司 | Wide-angle lens and panoramic camera system |
| CN110927932A (en) * | 2019-12-23 | 2020-03-27 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
| CN113176655A (en) * | 2021-04-29 | 2021-07-27 | 天津欧菲光电有限公司 | Optical system, camera module, camera equipment and carrier |
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| CN1818736A (en) * | 2006-01-20 | 2006-08-16 | 中国兵器工业第二零五研究所 | Continuous varifocus projecting lens for projector |
| CN101101365A (en) * | 2006-06-22 | 2008-01-09 | Bci财务公司 | Projection objective with fixed focal length for digital projection |
| CN207799220U (en) * | 2018-01-17 | 2018-08-31 | 嘉兴中润光学科技有限公司 | Short focus projection objective |
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| US6765731B1 (en) * | 2003-03-28 | 2004-07-20 | 3M Innovative Properties Company | Low element count projection lenses for use with pixelized panels |
| CN1768289A (en) * | 2003-03-28 | 2006-05-03 | 3M创新有限公司 | Low element count projection lenses for use with pixelized panels |
| CN1818736A (en) * | 2006-01-20 | 2006-08-16 | 中国兵器工业第二零五研究所 | Continuous varifocus projecting lens for projector |
| CN101101365A (en) * | 2006-06-22 | 2008-01-09 | Bci财务公司 | Projection objective with fixed focal length for digital projection |
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| CN110554476A (en) * | 2018-05-30 | 2019-12-10 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110554476B (en) * | 2018-05-30 | 2021-07-06 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110794556A (en) * | 2019-11-01 | 2020-02-14 | 江西联创电子有限公司 | Wide-angle lens and panoramic camera system |
| CN110927932A (en) * | 2019-12-23 | 2020-03-27 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
| CN113176655A (en) * | 2021-04-29 | 2021-07-27 | 天津欧菲光电有限公司 | Optical system, camera module, camera equipment and carrier |
| CN113176655B (en) * | 2021-04-29 | 2023-10-13 | 江西欧菲光学有限公司 | Optical system, camera module, camera equipment and carrier |
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Address after: 314000 No.188, Taojing Road, Gaozhao street, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Zhongrun Optical Technology Co.,Ltd. Address before: 314000 Room 2F201-6, Building 6, Jiaxing Photovoltaic Science Park, 1288 Kanghe Road, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee before: JIAXING ZHONGRUN OPTICAL SCIENCE AND TECHNOLOGY Co.,Ltd. |