CN106154523A - Zoom lens - Google Patents

Abstract

The present invention is that a kind of zoom lens includes by one first lens group, an aperture and a second lens group of thing side to image side sequential.This first lens group has negative refractive power, and is made up of one first eyeglass, one second eyeglass and one the 3rd eyeglass, and refractive power is sequentially negative, negative, positive, and the 3rd eyeglass forms the balsaming lens of a negative refractive power with this second eyeglass gluing.This second lens group has positive refractive power, and be made up of one the 4th eyeglass, one the 5th eyeglass, one the 6th eyeglass, one the 7th eyeglass, one the 8th eyeglass and one the 9th eyeglass, refractive power be sequentially positive and negative, just, positive and negative, just, and the 6th eyeglass forms the balsaming lens of a negative refractive power with the 5th eyeglass gluing；Additionally, this first lens group can move between this thing side and this aperture, this second lens group can move between this aperture and this image side.

Description

Zoom lens

Technical field

The present invention is relevant with optical lens；Particularly relate to a kind of zoom lens.

Background technology

The rapid advances of semiconductor technology in recent years so that such as optical equipment imagings such as monitors Picture is the most careful, resolution that the related camera lens making above-mentioned optical equipment is suitable for and picture element Requirement also and then promote, in more detail, when camera lens short burnt time require to have wide viewing angle, and also Low manufacturing cost and compact demand still need to be met.

In addition, above-mentioned optical equipment is when daytime, and its camera lens system picks using visible ray as image Light source when taking, and during to night, then can change the light source using near infrared light as image capture, but Owing to the ambient light of some setting place is the most dim, in order to the picture after making imaging has the brightest Degree, so the camera lens of above-mentioned optical equipment is generally required for meeting the design of large aperture, and joins simultaneously Two lens groups are respectively arranged at the architecture design before and after aperture by conjunction, pray reaching zoom and aforesaid light Demand is (such as United States Patent (USP) US8395847, US8184379, USB085474, US7652827 Deng).

But, the design of above-mentioned patent is all to be applied to sheet width (image format) 1/3 inch is extremely The optics photo-sensitive cell of 1/2.7 inch.But ought now optics photo-sensitive cell use picture element more than 500 Wan Shi, will cause sense brightness the best owing to single picture element size (pixel size) is the least, so light After the design sheet width learning photo-sensitive cell can become big, but sheet width increases, generally for good design, manufacture, Camera lens volume then can and then amplify, and causes cost of manufacture the most and then to uprise, and carries on the back with the demand in market Road and speed.

Therefore know as shown in the above description, when applying the high-order application development toward high picture element of market, The design of existing zoom lens is not attained perfect yet, it is impossible to effectively meets the market demand, and still needs The anxiety of improvement.

Summary of the invention

In view of this, the purpose of the present invention be used for providing one can from wide-angle side to take the photograph remotely all have big The zoom lens of aperture characteristic, and it is applicable to the large scale optics photo-sensitive cell such as 1/2 inch, And its camera lens volume remains to keep compact, and overall length is similar with existing lens design, and with Time can reach to correct visible ray to the aberration of infrared light, moreover it is possible to keep high solution degree and large aperture, simultaneously The advantage there is easily manufacture, assembling.

Edge is to reach above-mentioned purpose, and zoom lens provided by the present invention includes by a thing side to a picture Side and one first lens group, an aperture and a second lens group along an optical axis sequential.Wherein, This first lens group has negative refractive power, and by one first mirror of this thing side to this image side sequential Sheet, one second eyeglass and one the 3rd eyeglass are formed；This first eyeglass has negative refractive power；Should Second eyeglass has negative refractive power；3rd eyeglass has a positive refractive power, and with this second eyeglass glue Glutinous formation one has the balsaming lens of negative refractive power；Additionally, this first eyeglass, this second eyeglass with 3rd eyeglass can be along this optical axis synchronizing moving between this thing side and this aperture.This second lens group has Have a positive refractive power, and by one the 4th eyeglass of this thing side to this image side sequential, one the 5th eyeglass, One the 6th eyeglass, one the 7th eyeglass, one the 8th eyeglass and one the 9th eyeglass are formed；4th Eyeglass has positive refractive power；5th eyeglass has negative refractive power；6th eyeglass has positive dioptric Power, and form a balsaming lens with negative refractive power with the 5th eyeglass gluing；7th eyeglass There is positive refractive power；8th eyeglass has negative refractive power；9th eyeglass has positive refractive power； Additionally, the 4th eyeglass, the 5th eyeglass, the 6th eyeglass, the 7th eyeglass, the 8th mirror Sheet and the 9th eyeglass can be along this optical axis synchronizing movings between this aperture and this image side.

Consequently, it is possible to through above-mentioned lens design, just can remain to keep frivolous short at camera lens volume Little, and overall length is similar with existing lens design, and it is applicable to the large scale light such as 1/2 inch Learn photo-sensitive cell, and can reach to correct visible ray to the aberration of infrared light simultaneously, moreover it is possible to keep height to solve Degree and large aperture, and the advantage that there is easily manufacture simultaneously, assemble.

Accompanying drawing explanation

Figure 1A is that first embodiment zoom lens is in the lens hanger composition of wide-angle side；

Figure 1B is that first embodiment zoom lens is in taking the photograph long-range lens hanger composition；

Fig. 2 A is that first embodiment is in the distortion figure of wide-angle side；

Fig. 2 B is that first embodiment is in the curvature of field figure of wide-angle side；

Fig. 2 C is that first embodiment is in the longitudinal spherical aberration figure of wide-angle side；

Fig. 2 D is that first embodiment is in taking the photograph long-range distortion figure；

Fig. 2 E is that first embodiment is in taking the photograph long-range curvature of field figure；

Fig. 2 F is that first embodiment is in taking the photograph long-range longitudinal spherical aberration figure；

Fig. 3 A is that the second embodiment zoom lens is in the lens hanger composition of wide-angle side；

Fig. 3 B is that the second embodiment zoom lens is in taking the photograph long-range lens hanger composition；

Fig. 4 A is that the second embodiment is in the distortion figure of wide-angle side；

Fig. 4 B is that the second embodiment is in the curvature of field figure of wide-angle side；

Fig. 4 C is that the second embodiment is in the longitudinal spherical aberration figure of wide-angle side；

Fig. 4 D is that the second embodiment is in taking the photograph long-range distortion figure；

Fig. 4 E is that the second embodiment is in taking the photograph long-range curvature of field figure；

Fig. 4 F is that the second embodiment is in taking the photograph long-range longitudinal spherical aberration figure；

Fig. 5 A is that the 3rd embodiment zoom lens is in the lens hanger composition of wide-angle side；

Fig. 5 B is that the 3rd embodiment zoom lens is in taking the photograph long-range lens hanger composition；

Fig. 6 A is that the 3rd embodiment is in the distortion figure of wide-angle side；

Fig. 6 B is that the 3rd embodiment is in the curvature of field figure of wide-angle side；

Fig. 6 C is that the 3rd embodiment is in the longitudinal spherical aberration figure of wide-angle side；

Fig. 6 D is that the 3rd embodiment is in taking the photograph long-range distortion figure；

Fig. 6 E is that the 3rd embodiment is in taking the photograph long-range curvature of field figure；

Fig. 6 F is that the 3rd embodiment is in taking the photograph long-range longitudinal spherical aberration figure；

Fig. 7 A is that the 4th embodiment zoom lens is in the lens hanger composition of wide-angle side；

Fig. 7 B is that the 4th embodiment zoom lens is in taking the photograph long-range lens hanger composition；

Fig. 8 A is that the 4th embodiment is in the distortion figure of wide-angle side；

Fig. 8 B is that the 4th embodiment is in the curvature of field figure of wide-angle side；

Fig. 8 C is that the 4th embodiment is in the longitudinal spherical aberration figure of wide-angle side；

Fig. 8 D is that the 4th embodiment is in taking the photograph long-range distortion figure；

Fig. 8 E is that the 4th embodiment is in taking the photograph long-range curvature of field figure；

Fig. 8 F is that the 4th embodiment is in taking the photograph long-range longitudinal spherical aberration figure；

Fig. 9 A is that the 5th embodiment zoom lens is in the lens hanger composition of wide-angle side；

Fig. 9 B is that the 5th embodiment zoom lens is in taking the photograph long-range lens hanger composition；

Figure 10 A is that the 5th embodiment is in the distortion figure of wide-angle side；

Figure 10 B is that the 5th embodiment is in the curvature of field figure of wide-angle side；

Figure 10 C is that the 5th embodiment is in the longitudinal spherical aberration figure of wide-angle side；

Figure 10 D is that the 5th embodiment is in taking the photograph long-range distortion figure；

Figure 10 E is that the 5th embodiment is in taking the photograph long-range curvature of field figure；

Figure 10 F is that the 5th embodiment is in taking the photograph long-range longitudinal spherical aberration figure.

It should be noted that, above-listed distortion figure, curvature of field figure and longitudinal spherical aberration figure, is all in light The optical simulation datagram of gained when wavelength is 587 nanometer.

[symbol description]

1～5 zoom lens

G1 the first lens group

L1 the first eyeglass L2 the second eyeglass L3 the 3rd eyeglass

L23 balsaming lens

ST aperture

G2 second lens group

L4 the 4th eyeglass L5 the 5th eyeglass L6 the 6th eyeglass

L56 balsaming lens

L7 the 7th eyeglass L8 the 8th eyeglass L9 the 9th eyeglass

Z optical axis

Detailed description of the invention

For the present invention can be illustrated more clearly that, hereby lifts following example and coordinate diagram to describe in detail such as After, and Figure 1A and Figure 1B, Fig. 3 A and Fig. 3 B, Fig. 5 A and Fig. 5 B, Fig. 7 A and figure please be join Shown in 7B, Fig. 9 A and Fig. 9 B, respectively the present invention first is to the zoom lens of the 5th embodiment 1～5 in wide-angle side and eyeglass framework when taking the photograph long-range, wherein:

Described zoom lens 1～5 includes respectively by a thing side a to image side and along an optical axis Z sequentially One first lens group G1, an aperture ST and second lens group G2 of arrangement.It addition, according to using On demand, in described zoom lens 1～5 (as aperture position, this second lens group G2 with should Between image side etc.) it is also provided with an optical filter (Optical Filter), to filter out unnecessary noise Light, and can reach the purpose of improving optical usefulness.Certainly, the position of optical filter can be according to different designs Demand changes, and is not limited with foregoing.Wherein:

This first lens group G1 has negative refractive power, and by this thing side to the one of this image side sequential First eyeglass L1, one second eyeglass L2 and one the 3rd eyeglass L3 are formed, and this first mirror Group this first eyeglass L1 of G1, this second eyeglass L2 and the 3rd eyeglass L3 can in this thing side and Along this optical axis Z synchronizing moving between this aperture ST.

In more detail, this first eyeglass L1 is the convexoconcave lens with negative refractive power, and it is convex Face S1 is towards this thing side, and concave surface S2 is towards this image side.

This second eyeglass L2 is the biconcave lens with negative refractive power.

3rd eyeglass L3 is the convexoconcave lens with positive refractive power, and its convex surface S4 is towards this thing Side is also binded towards the concave surface S4 of this image side with this second eyeglass L2, and forms one and have negative dioptric The balsaming lens L23 of power, and it is noted that through above-mentioned by this second mirror of negative refractive power After 3rd eyeglass L3 of sheet L2 and positive refractive power binds and is arranged in this first eyeglass L1 Design, can effectively achieve and eliminate aberration (Axial chromatic on the axle that the first lens group G1 is caused Aberration) effect.

This second lens group G2 has positive refractive power, and by this thing side to the one of this image side sequential 4th eyeglass L4, one the 5th eyeglass L5, one the 6th eyeglass L6, one the 7th eyeglass L7, one the 8th Eyeglass L8 and one the 9th eyeglass L9 is formed, and the 4th eyeglass L4 of this second lens group G2, 5th eyeglass L5, the 6th eyeglass L6, the 7th eyeglass L7, the 8th eyeglass L8 and 9th eyeglass L9 can use along this optical axis Z synchronizing moving between this aperture ST and this image side Adjust the imaging magnification of respectively this zoom lens 1～5, so that respectively this zoom lens 1～5 presents extensively Angle end (Wide) is to the multiplying power change taking the photograph remotely (Telephoto).

Additionally, when those zoom lens 1～5 adjust enlargement ratio, and order about this second lens group G2 Between this image side and this aperture ST along this optical axis Z move time, those zoom lens 1～5 can be because of Optical power changes and the situation that imaging surface offsets occurs, and this first lens group G1 mobile can reach into The effect of image planes correction.

In more detail, the 4th eyeglass L4 is the biconvex lens with positive refractive power, and its two Minute surface S7, S8 are all non-spherical surface.

5th eyeglass L5 is the convexoconcave lens with negative refractive power, and its convex surface S9 is towards this thing Side, concave surface S10 is then towards this image side.

6th eyeglass L6 is the biconvex lens with positive refractive power, and towards the convex surface of this thing side S10 and the 5th eyeglass L5 binds towards the concave surface S10 of this image side, forms one and has negative dioptric The balsaming lens L56 of power, and in designing the purpose of this balsaming lens L56 herein, be can pass through The optical effect of this balsaming lens L56 lens structure suppresses produced by second lens group G2 effectively Aberration on axle.

7th eyeglass L7 is the convexoconcave lens with positive refractive power, and its convex surface S13 is towards this Image side, and concave surface S12 is towards this thing side.It is noted that in the 6th eyeglass of positive refractive power Rearranging the purpose of design that design has the 7th eyeglass L7 of positive refractive power equally after L6, being can Effectively share the 6th eyeglass L6 refractive power (diopter) in optical system, except adding high inhibition Outside aberration, the 6th eyeglass L6 also can be avoided to cause eyeglass excessively to bend (over because refractive power is excessive Bending) situation, and then the manufacture difficulty of the 6th eyeglass L6 can be effectively reduced and can carry Rise error tolerances when this zoom lens 1～5 assembles.

8th eyeglass L8 is the convexoconcave lens with negative refractive power, and its convex surface S14 is towards this Thing side, and concave surface S15 is towards this image side.

9th eyeglass L9 is the convexoconcave lens with positive refractive power, and its convex surface S16 is towards this Thing side, and concave surface S17 is towards this image side, and its two minute surface S16, S17 are all non-spherical surface.

For effectively promoting the optical performance of this zoom lens 1～5, the present invention first to the 5th implements The optical axis Z of each lens surface of zoom lens 1～5 of example is by the radius of curvature R at place, each mirror Distance D on optical axis Z of face and next minute surface (or imaging surface), refractive index Nd of each eyeglass, each The Abbe number Vd of eyeglass and respectively this zoom lens 1～5 having in wide-angle side and when taking the photograph long-range Effect focal length F, aperture coefficient and angle of visibility FOV (2 ω), sequentially as shown in table one to table five:

Table one

Table two

Table three

Table four

Table five

It addition, in each lens of this zoom lens 1～5 of each embodiment, described non-spherical surface Obtained by the surface indentation degree z of S7, S8, S16 and S17 is by following equation:

$z=\frac{{\mathrm{ch}}^2}{1+\sqrt{1-(1+k)c^2{h}^2}}+{\mathrm{Ah}}^4+{\mathrm{Bh}}^6+{\mathrm{Ch}}^8+{\mathrm{Dh}}^{10}+{\mathrm{Eh}}^{12}+{\mathrm{Fh}}^{14}+{\mathrm{Gh}}^{16}+{\mathrm{Hh}}^{18}+{\mathrm{Jh}}^{20}$

Wherein:

The depression degree of z: non-spherical surface；

The inverse of c: radius of curvature；

Off-axis half height on h: surface；

K: circular cone coefficient；

Each level number of the off-axis half high h on A～J: surface.

The present invention first to the zoom lens 1～5 of the 5th embodiment each non-spherical surface S7, The asphericity coefficient k and each level number A～J of S8, S16 and S17, sequentially such as table six to table ten institute Show:

Table six

Surface	S7	S8	S16	S17
					K	-0.138474	-31.272872	0.234838	7.893315
A	-0.544808E-04	-0.880676E-04	-0.503960E-03	-0.478494E-04
					B	-0.215397E-05	0.454072E-05	0.924699E-04	-0.232453E-04
C	0.646151E-06	0.141997E-05	-0.319191E-04	0.839586E-05
					D	-0.875376E-07	-0.408980E-06	0.547581E-05	-0.127910E-05
E	0.761707E-08	0.491724E-07	-0.574897E-06	0.820410E-07
					F	-0.417598E-09	-0.316300E-08	0.370587E-07	-0.108783E-08
G	0.134290E-10	0.113039E-09	-0.143630E-08	-0.132746E-09
					H	-0.226067E-12	-0.211235E-11	0.305605E-10	0.641355E-11
J	0.151567E-14	0.160880E-13	-0.274574E-12	-0.866017E-13

Table seven

Surface	S7	S8	S16	S17
					K	-0.513642	8.016546	0.245354	13.390444
A	0.365372E-02	0.572497E-02	-0.217232E-01	-0.209672E-01
					B	-0.233783E-02	-0.339488E-02	0.153173E-01	0.221801E-01
C	0.619799E-03	0.821513E-03	-0.446234E-02	-0.924364E-02
					D	-0.862037E-04	-0.105136E-03	0.702758E-03	0.200316E-02
E	0.697377E-05	0.788006E-05	-0.669465E-04	-0.251754E-03
					F	-0.340360E-06	-0.358354E-06	0.401634E-05	0.190487E-04
G	0.987865E-08	0.973878E-08	-0.149904E-06	-0.856074E-06
					H	-0.157029E-09	-0.145567E-09	0.320136E-08	0.210562E-07
J	0.105265E-11	0.921010E-12	-0.299817E-10	-0.218344E-09

Table eight

Surface	S7	S8	S16	S17
					K	-0.287487	-29.078113	0.370957	8.149836
A	-0.444445E-03	-0.366634E-03	0.419421E-02	0.812727E-04
					B	0.325135E-03	0.207478E-03	-0.421990E-02	-0.118150E-02
C	-0.942099E-04	-0.651024E-04	0.149502E-02	0.569220E-03
					D	0.142162E-04	0.105461E-04	-0.278494E-03	-0.105259E-03
E	-0.123793E-05	-0.981564E-06	0.302812E-04	0.821031E-05
					F	0.646011E-07	0.545468E-07	-0.199242E-05	-0.106687E-06
G	-0.199454E-08	-0.178842E-08	0.781556E-07	-0.223650E-07
					H	0.335937E-10	0.319210E-10	-0.168246E-08	0.128488E-08
J	-0.237899E-12	-0.239172E-12	0.152978E-10	-0.214082E-10

Table nine

Table ten

Surface	S7	S8	S16	S17
					K	-0.057802	-38.237948	0.381400	7.510150
A	-0.108825E-02	-0.925117E-03	0.504424E-02	-0.255612E-01
					B	0.773173E-03	0.687816E-03	-0.778654E-02	0.245535E-01
C	-0.206412E-03	-0.195254E-03	0.374219E-02	-0.967539E-02
					D	0.289242E-04	0.292236E-04	-0.886427E-03	0.206324E-02
E	-0.236020E-05	-0.255010E-05	0.117839E-03	-0.263113E-03
					F	0.116248E-06	0.134432E-06	-0.923403E-05	0.206674E-04
G	-0.340625E-08	-0.421889E-08	0.423522E-06	-0.980342E-06
					H	0.546793E-10	0.725740E-10	-0.105177E-07	0.257489E-07
J	-0.370254E-12	-0.526846E-12	0.109217E-09	-0.287411E-09

It addition, in addition to above-mentioned optical specification, described zoom lens 1～5 coordinates setting of following condition formulae Meter, also can allow image reach preferably image quality, so can effectively achieve reduce camera lens volume, Radix Rumicis and the effect of reduction optical distortion:

(1)-1.2 ＜ F/f1 ＜-0.4；

(2) Vd6 ＞ 63；

(3) Vd6-Vd5 ＞ 40；

(4) Vd9 ＞ 63；

Wherein, F is the focal length of this zoom lens 1～5；F1 is the focal length of this first lens group G1； Vd5 is the Abbe number of the 5th eyeglass L5；Vd6 is the Abbe number of the 6th eyeglass L6； Vd9 is the Abbe number of the 9th eyeglass L9.

And the purpose of design of above-mentioned conditional, if being when described zoom lens 1～5 meets (1) formula, Then can the volume of reduction system effectively, and can effectively suppress aberration.In more detail, if described Zoom lens 1～5 is beyond the upper limit of (1) formula, and it is the most weak that the refractive power of its first lens group G1 will become, Needed for making zooming procedure, the stroke of movement is elongated, and is unfavorable for reduction system volume.Otherwise, if Less than the lower limit of (1) formula, the refractive power of this first lens group G1 is too strong by become, and cannot be effectively Suppression aberration.

If it addition, described zoom lens 1～5 cannot meet (2), (3) formula, then aberration on axle can be caused Inhibition the most evident, and visible ray to the aberration of infrared band also can amplify, and in turn results in camera lens Image quality is the best.

If additionally, the Abbe number of the 9th eyeglass L9 is less than the scope of (4) formula, then aberration can table Existing is poor.Therefore, pass through the design of (4) formula and coordinate the structure of the 9th eyeglass L9, can have Effect ground eliminates the optical system various aberrations when close to imaging surface, and can make described zoom lens The optical property of 1～5 can meet the optical demands of the optics photo-sensitive cell of million picture elements.

And the present invention first is to zoom lens 1～5 the counting in detail in above-mentioned condition of the 5th embodiment According to as shown in table 11:

Table 11

Consequently, it is possible to refer to Fig. 2 A to Fig. 2 C, it is known that know this zoom lens of first embodiment 1 by above-mentioned design, the image quality when wide-angle side also can reach requirement, wherein, by scheming 2A can be seen that, the maximum distortion amount of this zoom lens 1 is less than-100% and 0%.By Fig. 2 B Can be seen that, the maximum curvature of field of this zoom lens 1 is less than-0.10mm and 0.10mm.By Fig. 2 C Can be seen that, the maximum longitudinal spherical aberration of this zoom lens 1 is less than-0.20mm and 0.10mm.

Additionally, refering to Fig. 2 D to Fig. 2 F, it is known that this zoom lens 1 knowing first embodiment passes through Above-mentioned design, the image quality in time taking the photograph long-range also can reach requirement, wherein, and can by Fig. 2 D Finding out, the maximum distortion amount of this zoom lens 1 is less than-50% and 0%.Be can be seen that by Fig. 2 E, The maximum curvature of field of this zoom lens 1 is less than-0.10mm and 0.10mm.Be can be seen that by Fig. 2 F, The longitudinal spherical aberration of this zoom lens 1 is less than-0.10mm and 0.10mm.

Continuous refering to Fig. 4 A to Fig. 4 C, it is known that to know this zoom lens 2 of the second embodiment by above-mentioned Design, the image quality when wide-angle side also can reach requirement, wherein, Fig. 4 A can be seen that, The maximum distortion amount of this zoom lens 2 is less than-100% and 0%.Be can be seen that by Fig. 4 B, should The maximum curvature of field of zoom lens 2 is less than-0.10mm and 0.10mm；Be can be seen that by Fig. 4 C, should The maximum longitudinal spherical aberration of zoom lens 2 is less than-0.10mm and 0.10mm.

Additionally, refering to Fig. 4 D to Fig. 4 F, it is known that this zoom lens 2 knowing the second embodiment passes through Above-mentioned design, the image quality in time taking the photograph long-range also can reach requirement, wherein, and can by Fig. 4 D Finding out, the maximum distortion amount of this zoom lens 2 is less than-50% and 0%.Be can be seen that by Fig. 4 E, The maximum curvature of field of this zoom lens 2 is less than-0.20mm and 0.10mm.Be can be seen that by Fig. 4 F, The longitudinal spherical aberration of this zoom lens 2 is less than 0mm and 0.10mm.

Continuous refering to Fig. 6 A to Fig. 6 C, it is known that to know this zoom lens 3 of the 3rd embodiment by above-mentioned Design, the image quality when wide-angle side also can reach requirement, wherein, Fig. 6 A can be seen that, The maximum distortion amount of this zoom lens 3 is less than-100% and 0%.Be can be seen that by Fig. 6 B, should The maximum curvature of field of zoom lens 3 is less than-0.10mm and 0.10mm.Be can be seen that by Fig. 6 C, should The maximum longitudinal spherical aberration of zoom lens 3 is less than-0.10mm and 0.10mm.

Additionally, refering to Fig. 6 D to Fig. 6 F, it is known that this zoom lens 3 knowing the 3rd embodiment passes through Above-mentioned design, the image quality in time taking the photograph long-range also can reach requirement, wherein, and can by Fig. 6 D Finding out, the maximum distortion amount of this zoom lens 3 is less than-50% and 0%.Be can be seen that by Fig. 6 E, The maximum curvature of field of this zoom lens 3 is less than-0.10mm and 0.10mm.Be can be seen that by Fig. 6 F, The longitudinal spherical aberration of this zoom lens 3 is less than 0mm and 0.10mm.

Continuous refering to Fig. 8 A to Fig. 8 C, it is known that to know this zoom lens 4 of the 4th embodiment by above-mentioned Design, the image quality when wide-angle side also can reach requirement, wherein, Fig. 8 A can be seen that, The maximum distortion amount of this zoom lens 4 is less than-100% and 0%.Be can be seen that by Fig. 8 B, should The maximum curvature of field of zoom lens 4 is less than-0.20mm and 0.20mm.Be can be seen that by Fig. 8 C, should The maximum longitudinal spherical aberration of zoom lens 4 is less than 0mm and 0.10mm.

Additionally, refering to Fig. 8 D to Fig. 8 F, it is known that this zoom lens 4 knowing the 4th embodiment passes through Above-mentioned design, the image quality in time taking the photograph long-range also can reach requirement, wherein, and can by Fig. 8 D Finding out, the maximum distortion amount of this zoom lens 4 is less than-50% and 0%.Be can be seen that by Fig. 8 E, The maximum curvature of field of this zoom lens 4 is less than-0.20mm and 0.10mm.Be can be seen that by Fig. 8 F, The longitudinal spherical aberration of this zoom lens 4 is less than 0mm and 0.10mm.

Continuous refering to Figure 10 A to Figure 10 C, it is known that to know this zoom lens 5 of the 5th embodiment by upper State design, the image quality when wide-angle side also can reach requirement, wherein, can see Figure 10 A Going out, the maximum distortion amount of this zoom lens 5 is less than-100% and 0%.Be can be seen that by Figure 10 B, The maximum curvature of field of this zoom lens 5 is less than-0.10mm and 0.20mm.Be can be seen that by Figure 10 C, The maximum longitudinal spherical aberration of this zoom lens 5 is less than-0.10mm and 0.10mm.

Additionally, refering to Figure 10 D to Figure 10 F, it is known that this zoom lens 5 knowing the 5th embodiment leads to Cross above-mentioned design, the image quality in time taking the photograph long-range also can reach requirement, wherein, by Figure 10 D Can be seen that, the maximum distortion amount of this zoom lens 5 is less than-50% and 0%.Can by Figure 10 E Finding out, the maximum curvature of field of this zoom lens 5 is less than-0.10mm and 0.10mm.By Figure 10 F Can be seen that, the longitudinal spherical aberration of this zoom lens 5 is less than 0mm and 0.10mm.

In sum, this zoom lens 1～5 of the present invention, through above-mentioned lens structure and eyeglass The design of material and optical condition formula, just can from wide-angle side to taking the photograph the effect remotely all having large aperture, And be applicable to the large scale optics photosensory assembly such as 1/2 inch, and its camera lens volume remains to keep Compact, and can reach to correct visible ray to the aberration of infrared light simultaneously, moreover it is possible to keep Gao Xiedu And large aperture, and the advantage that there is easily manufacture simultaneously, assemble.

And should be noted that, the foregoing is only the preferable possible embodiments of the present invention, not It is limited with the content of above-described embodiment, and application description of the invention and claim institute such as For equivalence change, ought to be included in the scope of the claims of the present invention.

Claims (10)

1. a zoom lens, it is characterised in that include by a thing side a to image side and along an optical axis One first lens group, an aperture and a second lens group of sequential, wherein:

This first lens group has negative refractive power, and by the one first of this thing side to this image side sequential Eyeglass, one second eyeglass and one the 3rd eyeglass are formed；This first eyeglass has negative refractive power； This second eyeglass has negative refractive power；3rd eyeglass has a positive refractive power, and with this second eyeglass Gluing forms a balsaming lens with negative refractive power；Additionally, this first eyeglass, this second eyeglass And the 3rd eyeglass can be along this optical axis synchronizing moving between this thing side and this aperture；And

This second lens group has positive refractive power, and by the one the 4th of this thing side to this image side sequential Eyeglass, one the 5th eyeglass, one the 6th eyeglass, one the 7th eyeglass, one the 8th eyeglass and the 9th Eyeglass is formed；4th eyeglass has positive refractive power；5th eyeglass has negative refractive power；Should 6th eyeglass has positive refractive power, and forms a glue with negative refractive power with the 5th eyeglass gluing Close lens；7th eyeglass has positive refractive power；8th eyeglass has negative refractive power；9th Eyeglass has positive refractive power；Additionally, the 4th eyeglass, the 5th eyeglass, the 6th eyeglass, should 7th eyeglass, the 8th eyeglass and the 9th eyeglass can be along this light between this aperture and this image side Axle synchronizing moving.

2. zoom lens as claimed in claim 1, it is characterised in that this first eyeglass is convex Concavees lens, and it is convex surface facing this thing side；This second eyeglass is a biconcave lens；3rd eyeglass Be a convexoconcave lens, and its convex surface facing this thing side and with this second eyeglass towards the concave surface of this image side Bind.

3. zoom lens as claimed in claim 1, it is characterised in that the 4th eyeglass is a pair of Convex lens；5th eyeglass is a convexoconcave lens, and it is convex surface facing this thing side；6th eyeglass It is a biconvex lens, and glutinous towards the concave surface of this image side with the 5th eyeglass towards the convex surface of this thing side Close；7th eyeglass is a convexoconcave lens, and it is convex surface facing this image side；8th eyeglass is one Convexoconcave lens, and it is convex surface facing this thing side；9th eyeglass is a convexoconcave lens, and its convex surface Towards this thing side.

4. zoom lens as claimed in claim 3, it is characterised in that the 4th lens at least Minute surface is non-spherical surface.

5. zoom lens as claimed in claim 4, it is characterised in that two mirrors of the 4th lens Face is all non-spherical surface.

6. zoom lens as claimed in claim 3, it is characterised in that the 9th lens at least Minute surface is non-spherical surface.

7. zoom lens as claimed in claim 6, it is characterised in that two mirrors of the 9th lens Face is all non-spherical surface.

8. zoom lens as claimed in claim 1, it is characterised in that the 5th eyeglass with this Six eyeglasses also meet following condition: Vd6 ＞ 63；And Vd6-Vd5 ＞ 40；Wherein, Vd5 Abbe number for the 5th eyeglass；Vd6 is the Abbe number of the 6th eyeglass.

9. zoom lens as claimed in claim 1, it is characterised in that the 9th eyeglass is the most satisfied Following condition: Vd9 ＞ 63；Wherein, Vd9 is the Abbe number of the 9th eyeglass.

10. zoom lens as claimed in claim 1, it is characterised in that also meet following condition: -1.2 ＜ F/f1 ＜-0.4；Wherein, F is the focal length of this zoom lens；F1 is Jiao of this first lens group Away from.