CN206671664U - A kind of low-light level television imaging relaying coupling optical system - Google Patents
A kind of low-light level television imaging relaying coupling optical system Download PDFInfo
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- CN206671664U CN206671664U CN201720403999.3U CN201720403999U CN206671664U CN 206671664 U CN206671664 U CN 206671664U CN 201720403999 U CN201720403999 U CN 201720403999U CN 206671664 U CN206671664 U CN 206671664U
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Abstract
For relaying of the prior art, coupled system is complicated, lens numbers are more, and etc. technical problem, the utility model provides a kind of low-light level television imaging relaying coupling optical system, and its technical scheme is：Described preceding convergent lens group includes biconvex positive lens I, negative crescent lens, positive crescent lens I and the biconvex positive lens II sequentially coaxially set from light incident direction；Described post-concentration lens group includes double-concave negative lens, biconvex positive lens III, positive crescent lens II, biconvex positive lens IV and the positive crescent lens III sequentially coaxially set from light incident direction.The utility model through fault symmetric deformation and complicates the improved optical texture being made up of nine lens using double gauss structure, is advantageous to aberration correction, reduces systematical distortion, realizes object lens of large relative aperture, improves system coupling efficiency.Designed using quasi- telecentric beam path in image space, the more equilibrium of the brightness of image in full filed is effectively increased image illumination uniformity.
Description
Technical field
It the utility model is related to low-light level television imaging system, more particularly to a kind of low-light level television imaging relaying coupling optical system
System.
Background technology
Low-light level television imaging system is to carry out a kind of night vision apparatus of night observation, is to dark weak using image intensifier
Target light radiation signal carries out the technology being imaged after enhancing amplification, is adapted to be scouted at night, aims at, vehicle drive, photoelectricity
Fire control and other battlefield operations.Advanced night vision apparatus is that army obtains the essential technological means of night fighting triumph, is advantageous to
Night, battlefield was hidden motor-driven or find unfriendly target in advance, can make itself to be in preemptive status.Low-light level television imaging system
The research and development of system are constantly subjected to the highest attention and support of each developed country, and development is also abnormal rapid.
The main operational principle of low-light level television imaging system is as shown in figure 1, natural light is reflected into optics by target surface
Focal imaging is on image intensifier b cathode plane after system object lens a, and the enhancing that signal is carried out by image intensifier is amplified, in picture
Be imaged on the fluorescent screen of booster, then by relaying coupling optical system c by the picture of booster fluorescent screen coupled to CMOS/CCD into
As detector d, then carry out image in video display e and show for eye-observation.
Coupling between the picture of booster fluorescent screen and CMOS/CCD imaging detectors is divided into fiber coupling and relay lens
Two kinds of coupling.Wherein, fiber coupling small volume, suitable for portable, wear-type Low Light Level Imaging System.Coupling is carried out using optical fiber
The CMOS/CCD with optical fiber input window is needed to use during conjunction, and such imaging detector is with window protection glass in the market
Glass.The complex process of the original window protective glass of imaging detector is removed, technical difficulty is big.Relay lens coupling is to utilize optics
Camera lens realizes biography picture, its advantage be focusing easily, imaging clearly, technology maturity are high, cost is low, be widely used.
Application No. 201310143334.X Chinese patent application discloses a kind of for the optical coupled of micro light detecting
System, the system overall length reach 285mm, and optical system is oversize, are unfavorable for realizing miniaturization, the light weight of low-light level television imaging system
Change.Further, since its is complicated, lens numbers are more, cause that relay lens transmitance is low, and coupling efficiency is not high.
Utility model content
For relaying of the prior art, coupled system is complicated, lens numbers are more, caused by relay lens pass through
The technical problems such as rate is low, coupling efficiency is low, the utility model provide a kind of low-light level television imaging relaying coupling optical system, are used for
The relay lens coupling of low-light level television imaging system, realize the work(of the image transmitting between image intensifier and imaging detector
Energy.
A kind of described low-light level television imaging relaying coupling optical system, including be used to collect as increasing in front of diaphragm
The preceding convergent lens group and the post-concentration lens group for being used to be converged to picture positioned at diaphragm rear that strong device fluorescent screen emits beam, will
On CMOS/CCD imaging detectors focal plane, its technical scheme is image formation by rays from image intensifier fluorescent screen：Described
Preceding convergent lens group includes the biconvex positive lens I, negative crescent lens, positive crescent sequentially coaxially set from light incident direction
Lens I and biconvex positive lens II；The concave-concave that described post-concentration lens group includes sequentially coaxially setting from light incident direction is born
Lens, biconvex positive lens III, positive crescent lens II, biconvex positive lens IV and positive crescent lens III；
Wherein, positive crescent lens I and biconvex positive lens II composition balsaming lens group I glued together；Double-concave negative lens
With biconvex positive lens III composition balsaming lens group II glued together, and positive crescent lens II and biconvex positive lens IV glue
It is combined composition balsaming lens group III.
Further, described balsaming lens group II meets following condition：12≤fII/ f≤13.5, f are preceding convergent lens
The total focal length for the relaying coupling optical system that group is formed with post-concentration lens group, fIIFor balsaming lens group II combined focal length.Institute
The balsaming lens group III stated meets following condition：2.4≤fIII/ f≤3.5, f are preceding convergent lens group and post-concentration lens group structure
Into the relaying total focal length of coupling optical system, fIIIFor balsaming lens group III combined focal length.
Further, described preceding convergent lens group meets following condition：3.8≤f100/ f≤7.0, f are preceding convergent lens
The total focal length for the relaying coupling optical system that group is formed with post-concentration lens group, f100For the combined focal length of preceding convergent lens group.
Further, described biconvex positive lens I meets following condition：3≤f2/ f≤4.5, Nd>1.85 Vd<35, its
Middle f is the total focal length for the relaying coupling optical system that preceding convergent lens group is formed with post-concentration lens group, f2For biconvex positive lens
The d line Abbe constants that I effective focal length, Nd are the refractive index of lens material d lines, Vd is lens material；Described negative crescent
Lens meet following condition：-1.3≤f3/ f≤- 1.0, Nd<1.75 Vd>40, f be preceding convergent lens group and post-concentration lens group
The total focal length of the relaying coupling optical system of composition, f3To bear the effective focal length of crescent lens, Nd is lens material d lines
Refractive index, the d line Abbe constants that Vd is lens material；Described positive crescent lens I meets following condition：3.85≤f4/f≤
4.6, Nd<1.50 Vd>70, wherein f are the total of the relaying coupling optical system that preceding convergent lens group is formed with post-concentration lens group
Focal length, f4For positive crescent lens I effective focal length, Nd is the refractive index of lens material d lines, Vd is lens material d line Ah
Shellfish constant；Described biconvex positive lens II meets following condition：3≤f5/ f≤3.4, Nd>1.85 Vd<40, wherein, f is preceding meeting
The total focal length for the relaying coupling optical system that poly- lens group is formed with post-concentration lens group, f5For the effective of biconvex positive lens II
The d line Abbe constants that focal length, Nd are the refractive index of lens material d lines, Vd is lens material.
Further, described negative crescent lens meet following condition with balsaming lens group I：0.10≤d12/l≤
0.20, wherein d12To bear the interval of crescent lens and the positive crescent lens I in balsaming lens group I,lFor image intensifier fluorescence
Screen and the centre distance of CMOS/CCD imaging detectors focal plane.
Further, described post-concentration lens group meets following condition：1.1≤f101/ f≤1.4, wherein f are assembled to be preceding
The total focal length for the relaying coupling optical system that lens group is formed with post-concentration lens group, f101It is burnt for the combination of post-concentration lens group
Away from.
Further, described double-concave negative lens meet following condition：-3.85≤f7/ f≤- 2.8, Nd>1.85 Vd<
25, wherein f are the total focal length for the relaying coupling optical system that preceding convergent lens group is formed with post-concentration lens group, f7For concave-concave
The d line Abbe constants that the effective focal length of negative lens, Nd are the refractive index of lens material d lines, Vd is lens material；Described biconvex
Positive lens III meets following condition：3.2≤f8/ f≤4.5, Nd>1.62 Vd>50, wherein f are the meeting with after of preceding convergent lens group
The total focal length for the relaying coupling optical system that poly- lens group is formed, f8 are biconvex positive lens III effective focal length, Nd is lens
The refractive index of material d lines, the d line Abbe constants that Vd is lens material；Described positive crescent lens II meets following condition：
5.3≤f9/ f≤6.9, Nd>1.75 Vd<35, wherein f are that preceding convergent lens group couples with the relaying that post-concentration lens group is formed
The total focal length of optical system, f9For positive crescent lens II effective focal length, Nd be the refractive index of lens material d lines, Vd be
The d line Abbe constants of mirror material；Described biconvex positive lens IV meets following condition：4.3≤f10/ f≤5.1, Nd>1.85 Vd<
40, wherein f are the total focal length for the relaying coupling optical system that preceding convergent lens group is formed with post-concentration lens group, f10For biconvex
The d line Abbe constants that positive lens IV effective focal length, Nd are the refractive index of lens material d lines, Vd is lens material；It is described just
Crescent lens III meets following condition：2.3≤f11/ f≤3.4, Nd>1.85 Vd<40, wherein f be preceding convergent lens group with
The total focal length for the relaying coupling optical system that post-concentration lens group is formed, f11For positive crescent lens III effective focal length, Nd
For the d line Abbe constants that the refractive index of lens material d lines, Vd are lens material.
Preferably, the distance of described image intensifier fluorescent screen and biconvex positive lens I is 10mm, positive crescent lens III
Distance with CMOS/CCD imaging detectors focal plane is 6.13mm.
Preferably, described positive crescent lens I selects the crown glass of low dispersion；Used in described biconvex positive lens II
The flint glass of the high dispersion of material selection.
Preferably, described double-concave negative lens select the flint glass of high dispersion；Material used in described biconvex positive lens III
Crown glass of the material from low dispersion.
The beneficial effects of the utility model are：The utility model is using double gauss structure through fault symmetric deformation and complication
The improved optical texture being made up of nine lens, be advantageous to aberration correction, reduce systematical distortion, realize object lens of large relative aperture, carry
High system coupling efficiency.Positive crescent lens I and biconvex positive lens II compositions balsaming lens group I, cemented surface bend towards diaphragm, favorably
In reduction system spherical aberration.Double-concave negative lens, biconvex positive lens III composition balsaming lens, cemented surface advantageously reduce backwards to diaphragm
The utility model astigmatism.Designed using quasi- telecentric beam path in image space, to ensure that the beam primary light line of system exit is approximately parallel to light
Axle, impinged perpendicularly on so that the light of each angle of visual field can approach on CMOS/CCD imaging detectors focal plane, so that entirely
Brightness of image more equilibrium in visual field effectively increases image illumination uniformity.
Brief description of the drawings
Fig. 1 low-light level television imaging system theory diagrams.
Fig. 2 is optical system light path figure.
Fig. 3 is the transmission function figure of optical system.
Fig. 4 is optical system point range figure.
Fig. 5 is the optical system curvature of field, distortion figure.
Fig. 6 is optical system relative illumination curve map.
In figure, 1 is image intensifier fluorescent screen, and 2 be biconvex positive lens I, and 3 be negative crescent lens, and 4 be positive crescent lens
I, 5 be biconvex positive lens II, and 6 be diaphragm, and 7 be double-concave negative lens, and 8 be biconvex positive lens III, and 9 be positive crescent lens II, 10
It is positive crescent lens III for biconvex positive lens IV, 11,12 be CMOS/CCD imaging detectors focal plane.
Wherein, convergent lens group before 100.；101. post-concentration lens group.
Embodiment
The utility model is further detailed below in conjunction with the accompanying drawings.
Such as Fig. 2, a kind of low-light level television imaging relays coupling optical system, including positioned at the front of diaphragm 6 for collecting picture
The preceding convergent lens group 100 that booster fluorescent screen 1 emits beam and the post-concentration for being used to be converged to picture positioned at the rear of diaphragm 6 are saturating
Microscope group 101, by the image formation by rays from image intensifier fluorescent screen 1 on CMOS/CCD imaging detectors focal plane 12, its technology
Scheme is：Described preceding convergent lens group 100 includes biconvex positive lens I2, the negative moon sequentially coaxially set from light incident direction
Thread form lens 3, positive crescent lens I4 and biconvex positive lens II5；Described post-concentration lens group 101 is included from light incidence side
To double-concave negative lens 7, biconvex positive lens III8, positive crescent lens II9, the biconvex positive lens IV10 and just sequentially coaxially set
Crescent lens III11；
Wherein, positive crescent lens I4 and biconvex positive lens II5 composition balsaming lens group I glued together；Concave-concave is negative saturating
Mirror 7 and biconvex positive lens III8 composition balsaming lens group II glued together, and positive crescent lens II9 and biconvex positive lens
IV10 composition balsaming lens group III glued together.
Further, described balsaming lens group II meets following condition：12≤fII/ f≤13.5, f are preceding convergent lens
The total focal length for the relaying coupling optical system that group 100 is formed with post-concentration lens group 101, fIIFor balsaming lens group II combination
Focal length；
Described balsaming lens group III meets following condition：2.4≤fIII/ f≤3.5, f be preceding convergent lens group 100 with
The total focal length for the relaying coupling optical system that post-concentration lens group 101 is formed, fIIIFor balsaming lens group III combined focal length.
Further, described preceding convergent lens group 100 meets following condition：3.8≤f100/ f≤7.0, f assemble to be preceding
The total focal length for the relaying coupling optical system that lens group 100 is formed with post-concentration lens group 101, f100For preceding convergent lens group
100 combined focal length.
Further, described biconvex positive lens I2 meets following condition：3≤f2/ f≤4.5, Nd>1.85 Vd<35, its
Middle f is the total focal length for the relaying coupling optical system that preceding convergent lens group 100 is formed with post-concentration lens group 101, f2For biconvex
The d line Abbe constants that positive lens I2 effective focal length, Nd are the refractive index of lens material d lines, Vd is lens material；Described is negative
Crescent lens 3 meet following condition：-1.3≤f3/ f≤- 1.0, Nd<1.75 Vd>40, f be preceding convergent lens group 100 with after
The total focal length for the relaying coupling optical system that convergent lens group 101 is formed, f3To bear the effective focal length of crescent lens 3, Nd is
The refractive index of lens material d lines, the d line Abbe constants that Vd is lens material；Described positive crescent lens I4 meets following bar
Part：3.85≤f4/ f≤4.6, Nd<1.50 Vd>70, wherein f are that preceding convergent lens group 100 is formed with post-concentration lens group 101
The relaying total focal length of coupling optical system, f4For positive crescent lens I4 effective focal length, the folding that Nd is lens material d lines
Penetrate rate, the d line Abbe constants that Vd is lens material；Described biconvex positive lens II5 meets following condition：3≤f5/ f≤3.4,
Nd>1.85 Vd<40, wherein, f is the relaying coupling optical system that preceding convergent lens group 100 is formed with post-concentration lens group 101
Total focal length, f5For refractive index that biconvex positive lens II5 effective focal length, Nd are lens material d lines, the d that Vd is lens material
Line Abbe constant.
Further, described negative crescent lens 3 meet following condition with balsaming lens group I：0.10≤d12/l≤
0.20, wherein d12To bear the interval of the positive crescent lens I4 in crescent lens 3 and balsaming lens group I,lIt is glimmering for image intensifier
Optical screen 1 and the centre distance of CMOS/CCD imaging detectors focal plane 12.
Further, described post-concentration lens group 101 meets following condition：1.1≤f101Before/f≤1.4, wherein f are
The total focal length for the relaying coupling optical system that convergent lens group 100 is formed with post-concentration lens group 101, f101For post-concentration lens
The combined focal length of group 101.
Further, described double-concave negative lens 7 meet following condition：-3.85≤f7/ f≤- 2.8, Nd>1.85 Vd<
25, wherein f are the total focal length for the relaying coupling optical system that preceding convergent lens group 100 is formed with post-concentration lens group 101, f7
For refractive index that the effective focal length of double-concave negative lens 7, Nd are lens material d lines, the d line Abbe constants that Vd is lens material；Institute
The biconvex positive lens III8 stated meets following condition：3.2≤f8/ f≤4.5, Nd>1.62 Vd>50, wherein f are preceding convergent lens
The total focal length for the relaying coupling optical system that group 100 is formed with post-concentration lens group 101, f8 are having for biconvex positive lens III8
Imitate focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；Described positive crescent lens
II9 meets following condition：5.3≤f9/ f≤6.9, Nd>1.75 Vd<35, wherein f are that preceding convergent lens group 100 and post-concentration are saturating
The total focal length for the relaying coupling optical system that microscope group 101 is formed, f9It is lens for positive crescent lens II9 effective focal length, Nd
The refractive index of material d lines, the d line Abbe constants that Vd is lens material；Described biconvex positive lens IV10 meets following condition：
4.3≤f10/ f≤5.1, Nd>1.85 Vd<40, wherein f are during preceding convergent lens group 100 is formed with post-concentration lens group 101
Total focal length, f after coupling optical system10For refractive index that biconvex positive lens IV10 effective focal length, Nd are lens material d lines,
Vd is the d line Abbe constants of lens material；Described positive crescent lens III11 meets following condition：2.3≤f11/ f≤3.4,
Nd>1.85 Vd<40, wherein f are the relaying coupling optical system that preceding convergent lens group 100 is formed with post-concentration lens group 101
Total focal length, f11For positive crescent lens III11 effective focal length, Nd be the refractive index of lens material d lines, Vd be lens material
D line Abbe constants.
Preferably, described image intensifier fluorescent screen 1 and biconvex positive lens I2 distance are 10mm, positive crescent lens
III11 and the distance of CMOS/CCD imaging detectors focal plane 12 are 6.13mm.
Preferably, described positive crescent lens I4 selects the crown glass of low dispersion；Described biconvex positive lens II5 institutes
With the flint glass of the high dispersion of material selection.
Preferably, flint glass of the described double-concave negative lens 6 from high dispersion；Used in described biconvex positive lens III7
The crown glass of the low dispersion of material selection.
Specific embodiment I：The technical indicator that the optical system is realized in advance is：Wave band：0.5 μm~0.9 μm；Object-side numerical hole
Footpath： NAO=0.1；Image-side numerical aperture：NA=0.28；Magnifying power：β=-0.37；Image planes diameter：Φ6.4mm.
Physical separation in the optical system between each lens is：Between image intensifier fluorescent screen 1 and biconvex positive lens I2
At intervals of 10mm, between biconvex positive lens I2 and negative crescent lens 3 at intervals of 0.15mm, bear crescent lens 3 and the first month of the lunar year
Thread form lens I4 and between at intervals of 5.66mm, between biconvex positive lens II5 and diaphragm 6 at intervals of 2mm, diaphragm 6 with it is double
Between recessed negative lens 7 at intervals of 3mm, between biconvex positive lens III8 and positive crescent lens II9 at intervals of 0.15mm, it is double
Between convex positive lens IV10 and positive crescent lens III11 at intervals of 0.15mm, positive crescent lens III11 and CMOS/CCD
Between imaging detector focal plane 12 at intervals of 6.13mm.
The lens parameter list of table 1：
Wherein, lens sequence number is consistent with the sequence number in this paper specifications Fig. 2 in table 1, and such as " lens 2 " represent this paper biconvex
Positive lens I, by that analogy.
Such as Fig. 3, the detector that selected pixel count is 1280 × 720 corresponds to spatial frequency when being 104lp/mm, this reality
With new transmission function minimum 0.5, meet design requirement.
Such as Fig. 4, the utility model point spot diameter is less than pixel dimension, meets design requirement.
Such as Fig. 5, the utility model distortion meets design requirement less than 1%.
Such as Fig. 6, the 86% of illumination, meets design requirement centered on edge illumination.
The utility model realizes biography picture using coupling optical camera lens is relayed, and its advantage is focus easy, imaging clearly, skill
Art maturity is high, cost is low, is widely used.Moreover, realize the miniaturization of low-light level television imaging system, lightweight.In addition, by
In it is simple in construction, lens numbers are few, numerical aperture is big so that relay lens transmitance is high, improves coupling efficiency.
The foregoing is only the preferred embodiment of utility model and oneself, it is all in this reality not to limit the utility model
With all any modification, equivalent and improvement made within new spirit and principle etc., should be included in of the present utility model
Within protection domain.
Claims (10)
1. a kind of low-light level television imaging relaying coupling optical system, including positioned at diaphragm（6）Front be used for collect image intensifier
Fluorescent screen（1）The preceding convergent lens group to emit beam（100）With positioned at diaphragm（6）The post-concentration for being used to be converged to picture at rear is saturating
Microscope group（101）, image intensifier fluorescent screen will be come from（1）Image formation by rays in CMOS/CCD imaging detectors focal plane（12）On,
It is characterized in that：Described preceding convergent lens group（100）Including the biconvex positive lens I sequentially coaxially set from light incident direction
（2）, negative crescent lens（3）, positive crescent lens I（4）With biconvex positive lens II（5）；Described post-concentration lens group（101）
Including the double-concave negative lens sequentially coaxially set from light incident direction（7）, biconvex positive lens III（8）, positive crescent lens II
（9）, biconvex positive lens IV（10）With positive crescent lens III（11）；
Wherein, positive crescent lens I（4）With biconvex positive lens II（5）Composition balsaming lens group I glued together；Concave-concave is negative saturating
Mirror（7）With biconvex positive lens III（8）Composition balsaming lens group II glued together, and positive crescent lens II（9）With biconvex
Positive lens IV（10）Composition balsaming lens group III glued together.
2. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Described gluing
Lens group II meets following condition：12≤fII/ f≤13.5, f are preceding convergent lens group（100）With post-concentration lens group（101）Structure
Into the relaying total focal length of coupling optical system, fIIFor balsaming lens group II combined focal length；
Described balsaming lens group III meets following condition：2.4≤fIII/ f≤3.5, f are preceding convergent lens group（100）With it is rear
Convergent lens group（101）The total focal length of the relaying coupling optical system of composition, fIIIFor balsaming lens group III combined focal length.
3. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Described preceding meeting
Poly- lens group（100）Meet following condition：3.8≤f100/ f≤7.0, f are preceding convergent lens group（100）With post-concentration lens group
（101）The total focal length of the relaying coupling optical system of composition, f100For preceding convergent lens group（100）Combined focal length.
4. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Described biconvex
Positive lens I（2）Meet following condition：3≤f2/ f≤4.5, Nd>1.85 Vd<35, wherein f are preceding convergent lens group（100）With
Post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f2For biconvex positive lens I（2）Effective Jiao
Away from, d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described negative crescent lens（3）Meet following condition：-1.3≤f3/ f≤- 1.0, Nd<1.75 Vd>40, f assemble to be preceding
Lens group（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f3It is saturating for negative crescent
Mirror（3）Effective focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described positive crescent lens I（4）Meet following condition：3.85≤f4/ f≤4.6, Nd<1.50 Vd>70, before wherein f is
Convergent lens group（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f4For positive crescent moon
Shape lens I（4）Effective focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described biconvex positive lens II（5）Meet following condition：3≤f5/ f≤3.4, Nd>1.85 Vd<40, wherein, f is preceding meeting
Poly- lens group（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f5It is just saturating for biconvex
Mirror II（5）Effective focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material.
5. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：The described negative moon
Thread form lens（3）Meet following condition with balsaming lens group I：0.10≤d12/l≤ 0.20, wherein d12To bear crescent lens
（3）With the positive crescent lens I in balsaming lens group I（4）Interval,lFor image intensifier fluorescent screen（1）It is imaged with CMOS/CCD
Detector focal plane（12）Centre distance.
6. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Meeting after described
Poly- lens group（101）Meet following condition：1.1≤f101/ f≤1.4, wherein f are preceding convergent lens group（100）It is saturating with post-concentration
Microscope group（101）The total focal length of the relaying coupling optical system of composition, f101For post-concentration lens group（101）Combined focal length.
7. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Described concave-concave
Negative lens（7）Meet following condition：-3.85≤f7/ f≤- 2.8, Nd>1.85 Vd<25, wherein f are preceding convergent lens group
（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f7For double-concave negative lens（7）Have
Imitate focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described biconvex positive lens III（8）Meet following condition：3.2≤f8/ f≤4.5, Nd>1.62 Vd>50, before wherein f is
Convergent lens group（100）With post-concentration lens group（101）The relaying total focal length of coupling optical system of composition, f8 be biconvex just
Lens III（8）Effective focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described positive crescent lens II（9）Meet following condition：5.3≤f9/ f≤6.9, Nd>1.75 Vd<35, before wherein f is
Convergent lens group（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f9For positive crescent moon
Shape lens II（9）Effective focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described biconvex positive lens IV（10）Meet following condition：4.3≤f10/ f≤5.1, Nd>1.85 Vd<40, before wherein f is
Convergent lens group（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f10For biconvex just
Lens IV（10）Effective focal length, the d line Abbe constants that Nd is the refractive index of lens material d lines, Vd is lens material；
Described positive crescent lens III（11）Meet following condition：2.3≤f11/ f≤3.4, Nd>1.85 Vd<40, wherein f
For preceding convergent lens group（100）With post-concentration lens group（101）The total focal length of the relaying coupling optical system of composition, f11For just
Crescent lens III（11）Effective focal length, Nd is the refractive index of lens material d lines, Vd is lens material d line Abbe it is normal
Number.
8. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Described picture increases
Strong device fluorescent screen（1）With biconvex positive lens I（2）Distance be 10mm, positive crescent lens III（11）It is imaged and visits with CMOS/CCD
Survey device focal plane（12）Distance be 6.13mm.
9. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：The described first month of the lunar year
Thread form lens I（4）From the crown glass of low dispersion；Described biconvex positive lens II（5）Material therefor selects the fire of high dispersion
Stone glass.
10. a kind of low-light level television imaging relaying coupling optical system according to claim 1, it is characterized in that：Described is double
Recessed negative lens（7）From the flint glass of high dispersion；Described biconvex positive lens III（8）Material therefor selects the crown of low dispersion
Board glass.
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| CN201720403999.3U CN206671664U (en) | 2017-04-18 | 2017-04-18 | A kind of low-light level television imaging relaying coupling optical system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015349A (en) * | 2017-04-18 | 2017-08-04 | 凯迈（洛阳）测控有限公司 | A kind of low-light level television imaging relaying coupling optical system |
| CN110341605A (en) * | 2018-04-05 | 2019-10-18 | 丰田自动车工程及制造北美公司 | Stealthy equipment containing convergent lens and coherent image guide and include its vehicle |
-
2017
- 2017-04-18 CN CN201720403999.3U patent/CN206671664U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015349A (en) * | 2017-04-18 | 2017-08-04 | 凯迈（洛阳）测控有限公司 | A kind of low-light level television imaging relaying coupling optical system |
| CN110341605A (en) * | 2018-04-05 | 2019-10-18 | 丰田自动车工程及制造北美公司 | Stealthy equipment containing convergent lens and coherent image guide and include its vehicle |
| CN110341605B (en) * | 2018-04-05 | 2021-10-08 | 丰田自动车工程及制造北美公司 | Stealth device comprising a converging lens and a coherent image guide and vehicle comprising same |
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