CN203705717U - Optical lens capable of switching automatically double fields of view - Google Patents
Optical lens capable of switching automatically double fields of view Download PDFInfo
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- CN203705717U CN203705717U CN201320834512.9U CN201320834512U CN203705717U CN 203705717 U CN203705717 U CN 203705717U CN 201320834512 U CN201320834512 U CN 201320834512U CN 203705717 U CN203705717 U CN 203705717U
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Abstract
The utility model discloses an optical lens capable of switching automatically double fields of view. The optical lens comprises a straight line transmission mechanism, a fixed canister, a front fixed assembly, a focusing mechanism, a zoom assembly, a rear fixed assembly, a lens assembly and a system controller. The fixed canister comprises a groove along a bus, and a front lens cone and a spacing ring are respectively connected to the two ends of the fixed canister. The front fixed assembly comprises the front lens cone which is fixedly connected to the front end of the fixed canister and is fixedly connected to the front end of a support frame subassembly. The rear fixed assembly comprises a rear fixed canister which is located in the spacing ring. A spacing nail installed on the rear fixed canister slides along an internal screw thread of an outer focusing ring to convert the rotation motion of the outer focusing ring to back-and-forth motion along an optical axis in the spacing ring of the rear fixed canister. The optical lens adopts a mechanical compensation evolution form, the system controller drives a second motor to drive the zoom assembly to move back and forth to realize two-shift automatic zooming. Therefore, near-infrared double field of view switching is realized and the purpose of long distance detection is achieved.
Description
Technical field
The utility model relates to a kind of zoom lens.This camera lens adopts the form of double-view field switching to reach wide visual field and catches the object of following the tracks of with narrow visual field, is applied to and finds and tracking target.
Background technology
Needing to use focal optical lens for the Photoelectric Automatic Track System that aerial aim in short distance (operating distance 45Km) is surveyed, catches, followed the tracks of and measures, this optical lens is because application needs, should meet the detection of the large field range of distant object, meet again the ability that detection of a target small field of view details is differentiated, therefore its long focal length and image quality are all had to higher requirement, thereby make its Optical System Design difficulty larger.The complicated in mechanical structure of existing zoom lens, zooming time is long, and process and assemble is more difficult, make production cost high, zoom back focal length precision is restive, is not easy to reach the object of accurate measurement, and its complicated structure also makes product easily be damaged in use, and safeguard also more difficult.
Summary of the invention
For the defect existing in above-mentioned prior art or deficiency, the purpose of this utility model is, the optical lens that provides a kind of double-view field to automatically switch, this camera lens adopts the evolving form of mechanical compensation formula, drive zoom group to move forward and backward by motor and realize two grades of autozooms, can realize Near-infrared Double visual field and switch, play the object of long-range detection.
In order to achieve the above object, the utility model adopts following technical scheme to be solved:
The optical lens that double-view field automatically switches, comprises following part:
One linear transmission mechanism: comprise a bracket assembly, a ball-screw, a shaft coupling, the second motor; Described ball-screw is arranged on bracket assembly, and the second motor connects ball-screw by shaft coupling, and ball-screw is connected with zoom group, for zoom group provides driving force;
One stationary magazine creel: comprise that one along bus fluting, front lens barrel and spacing ring are connected to stationary magazine creel two ends;
One first fixing group: comprise a front lens barrel, the front end of this front lens barrel and stationary magazine creel connects firmly, and the front end of front lens barrel and bracket assembly connects firmly;
One focus adjusting mechanism: comprise a spacing ring, an outer focusing ring, direct current the first motor and the gear set with reducer casing, this spacing ring front end and stationary magazine creel connect firmly, and spacing ring and bracket assembly rear end connect firmly; This spacing ring rear end is connected with rear fixing group of spacing ring; The first motor connects outer focusing ring by gear set; Outer focusing ring is arranged on the external cylindrical surface of spacing ring, and described spacing ring (is provided with a fluting along cylinder bus; This first motor is connected with outer focusing ring by gear set, thereby the first motor-driven gear group rotation drives outer focusing ring rotation;
One zoom group: comprise a zoom lens barrel, this zoom lens barrel is positioned at stationary magazine creel, and this zoom lens barrel is connected with linear transmission mechanism by coupling shaft, zoom lens barrel passes through the driving of the second motor and ball-screw, thereby axially moves along stationary magazine creel bus fluting;
One latter fixing group: comprise a rear stationary magazine creel, rear stationary magazine creel is positioned at spacing ring, the banking pin of installing on rear stationary magazine creel slides along the internal thread of outer focusing ring, and rotatablely moving of outer focusing ring is converted to rear stationary magazine creel seesawing along optical axis direction in spacing ring;
One lens combination: the lens combination that is separately installed with concentric setting in front lens barrel, zoom lens barrel and rear stationary magazine creel.
Further, described camera lens also comprises a system controller, and described linear transmission mechanism also comprises baffle plate, two optoelectronic switches, two optoelectronic switch seats, two microswitches and two limited blocks; Described baffle plate and microswitch baffle plate are arranged on respectively the both sides of zoom group lower carriage; Two optoelectronic switches are arranged on a side of bracket assembly by optoelectronic switch seat and are positioned at the two ends of bracket assembly length direction; Two microswitches are arranged on the opposite side of bracket assembly by limited block and are positioned at the two ends of bracket assembly length direction; System controller is connected respectively with two optoelectronic switches, two microswitches, the first motor and the second motor.
Further, be also provided with two linear cylindrical guide rails that are parallel to ball-screw on support frame as described above assembly, two bearing bracket stands are arranged on a straight line cylindrical guide by a linear bearing respectively; The upper end of two bearing bracket stands is separately fixed at the two ends of zoom group lower carriage for supporting zoom group lower carriage.
Further, the external cylindrical surface of described linear bearing coordinates with bearing bracket stand inner cylinder face, then by screw, bearing bracket stand and a bearing check plate is connected firmly, and linear bearing is fixed in bearing bracket stand.
Further, the lens combination in described front lens barrel is by concentric installation one positive lens, a negative lens, a cemented doublet and a negative lens successively after forward direction.
Further, the lens combination in described zoom lens barrel is a positive lens, a cemented doublet and a positive lens of installing with one heart successively by after forward direction.
Further, described cemented doublet is made up of two positive lenss that bond together with one heart and a negative lens.
Further, the lens combination in described rear stationary magazine creel is a negative lens, a positive lens, a negative lens and a positive lens of installing with one heart successively by after forward direction.
The double-view field automatic switching method of the optical lens that above-mentioned double-view field automatically switches, comprises the steps:
Need to focus time, after the driving of startup system control device and control the first driven by motor, fix group and move forward and backward along optical axis direction;
While needing visual field to switch, startup system control device control the second driven by motor zoom group in stationary magazine creel along optical axis direction accelerated motion, when the baffle plate that is arranged on zoom group lower carriage one side triggers first optoelectronic switch, this optoelectronic switch sends signal to system controller, system controller control the second driven by motor zoom group uniform motion, when baffle plate triggers second optoelectronic switch, this optoelectronic switch sends signal to system controller, system controller control the second driven by motor zoom group retarded motion; When microswitch baffle plate triggers arbitrary microswitch, this microswitch sends signal to system controller, and system controller control the second motor stops operating.
Optical lens of the present utility model adopts the form of mechanical compensation, drives zoom group to move forward and backward realize two grades of autozooms by motor, can realize Near-infrared Double visual field and switch, and plays the object of long-range detection; Meanwhile, adopt the positive lens bonding together with one heart and the negative lens matching form of cemented doublet, made positive light coke and negative power in conjunction with effectively proofreading and correct high-order spherical aberration and coma; Adopt the form of cemented doublet and simple lens combination to make up the deficiency of proofreading and correct senior aberration.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the optical lens of double-view field automatic switchover of the present utility model.
Fig. 2 is the optical system diagram of the optical lens that automatically switches of double-view field of the present utility model in the time of short burnt state.
Fig. 3 is the optical system diagram of the optical lens that automatically switches of double-view field of the present utility model in the time of long burnt state.
Fig. 4 is CCD target surface size and the spatial domain scale relationships figure that detects target.
Fig. 5 is long burnt position spherical aberration curve.
Fig. 6 is short burnt position spherical aberration curve.
Fig. 7 is short burnt position transfer function figure.
Fig. 8 is long burnt position transfer function figure.
Fig. 9 is the cut-open view of the optical lens of double-view field automatic switchover of the present utility model.
Figure 10 is the three-dimensional explosive view of the optical lens of double-view field automatic switchover of the present utility model.
Figure 11 is the vertical view of the optical lens of double-view field automatic switchover of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further explained.
Embodiment
Main thought of the present utility model is that the focal length of zoom lens is determined, makes zoom lens under the environment that has mist, both meet the detection of the large field range of distant object, meets again the ability that detection of a target small field of view details is differentiated.In order to meet fog penetrating function, the band selection of camera lens of the present utility model is 790nm-910nm.Focal length is the important parameter of optical design, below according to the Johnson criterion shown in table 1, using span 8m aircraft as target, the focal length of the optical lens that meet above-mentioned requirements is determined.
Table 1Johnson criterion
| Observe grade | Implication | Required demand pairs (50% probability) |
| Survey (discovery) | In visual field, find target | 1.0±0.25 |
| Differentiate | Can roughly distinguish target type | 1.4±0.35 |
| Identification | Can be by target segments | 4.0±0.8 |
| See clearly | Can distinguish model and the feature of target | 6.4±1.5 |
Calculate focal length according to formula 1:
In formula, b is detector Pixel size, and n is pixel number, and y is target size, and L is the distance between object and camera lens, and f ＇ is lens focus.
(a) if can the detection of a target, at least need demand pairs, a line is to equaling two pixels, and therefore the detection of a target at least needs to account for 2 pixels.
Get n=2; B=8.3um; Y=8m; L=10km.Calculating focal length is f '=20.75mm;
Get n=2; B=8.3um; Y=8m; L=30km.Calculating focal length is f '=62.25mm;
Get n=2; B=8.3um; Y=8m; L=45km.Calculating focal length is f '=93.375mm.
(b) if can resolution target, object imaging at least accounts for 4 pixels, and its resoluting probability is 50%.
Get n=4; B=8.3um; Y=8m; L=10km.Calculate focal distance f '=41.5mm;
Get n=4; B=8.3um; Y=8m; L=30km.Calculate focal distance f '=124.5mm;
Get n=4; B=8.3um; Y=8m; L=45km.Calculate focal distance f '=186.75mm.
(c) if can identify target, object imaging at least accounts for 8 pixels, and its identification probability is 50%.
Get parameter n=8; B=8.3um; Y=8m; L=10km.Calculating focal length is f '=83mm;
Get parameter n=8; B=8.3um; Y=8m; L=30km.Calculating focal length is f '=249mm;
Get parameter n=8; B=8.3um; Y=8m; L=45km.Calculating focal length is f '=373.5mm.
(d) if can see clearly target, object imaging at least accounts for 10 pixels, and it sees clearly that probability is 50%.
Get parameter n=12; B=8.3um; Y=8m; L=10km.Calculating focal length is f '=103.75mm;
Get parameter n=12; B=8.3um; Y=8m; L=30km.Calculating focal length is f '=311.25mm;
Get parameter n=12; B=8.3um; Y=8m; L=45km.Calculating focal length is f '=466.875mm.
To sum up, if can, by clear to aircraft type and feature differentiation (seeing clearly target), be at least 466.875 ㎜ in the lens focus value at 45km place, length focal length is chosen for to 500mm; If can detect aircraft, at 45km place, lens focus value is at least 93.375 ㎜, for meeting the requirement of whole system visual field, short focal length is chosen as to 110mm.
As seen from Figure 4, detectable spatial domain, visual field becomes certain proportionate relationship a/m=b/n=f ＇/L with CCD target surface size.Wherein, a is CCD target surface width, and b is CCD target surface length, and m is the width of visual field detectable area, and n is the length of visual field detectable area, and f ＇ is lens focus, and L is the distance between target and camera lens, and getting 45km is detectable maximum distance;
Can calculate thus the detectable spatial domain of wide visual field: a(CCD target surface is wide) be 4.8mm, b (CCD target surface is long) is 6.4mm, f ＇=110mm, calculates m=1.96km, n=2.62km.Therefore,, when short focal length is set as 110mm, the spatial domain that can detect is (2.6 × 1.96) km
2.In like manner, when long focal length is set as 500 ㎜, calculating the spatial domain that can detect is (0.57 × 0.43) km
2.
In order to meet above-mentioned setting focal length, the lens that the utility model is selected are as follows:
As shown in Fig. 2, Fig. 3, Fig. 9 and table 2, the lens combination in first fixing group 1 adopts two gummeds and signal-lens array configuration, a positive lens, a negative lens, a cemented doublet and a negative lens is installed successively with one heart after being specially in front lens barrel 8 by forward direction; Lens in zoom group 2 also adopt two gummeds and signal-lens array configuration, a positive lens, a cemented doublet and a positive lens are installed successively with one heart after being specially in zoom lens barrel 17 by forward direction; Lens in rear fixing group 4 adopt four signal-lens combinations, a negative lens, a positive lens, a negative lens and a positive lens are installed successively with one heart after being specially in rear stationary magazine creel 30 by forward direction.
Above-mentioned cemented doublet is used for proofreading and correct axial chromatic aberration, chromatic longitudiinal aberration, spherochromatism and second order spectrum aberration.In cemented doublet, adopt the positive lens and the negative lens matching form that bond together with one heart, one is high index of refraction, and one is low-refraction, and positive light coke and negative power are in conjunction with can effectively proofreading and correct high-order spherical aberration and coma.Its positive lens is for outstanding above, and material adopts heavy crown, and its negative lens is bi-concave, and bore and positive lens are suitable, and material is dense flint.Adopt the form of cemented doublet and simple lens combination can make up the deficiency of proofreading and correct senior aberration.
Cemented doublet in front fixing group is specially:
Positive lens BaK4 n=1.552481 ν=46.9
Negative lens Laf3A n=1.744000 ν=44.9
Cemented doublet in zoom group is specially:
Positive lens LaK5 n=1.69100 ν=54.8
Negative lens Laf3A n=1.755201 ν=27.5
Through type (2) is changed radius:
R＇/r=(n＇-1)/(n-1) （2）
Through calculating the spherical aberration curve map as Fig. 5 and Fig. 6.
The lens that adopt in the optical lens that table 2 double-view field of the present utility model automatically switches
Draw as the transport function figure of Fig. 7 and Fig. 8 by optimization.
Fig. 9 is the cut-open view of two grades of Varifocus lens devices of the utility model.This device comprises first fixing group 1, zoom group 2, focus adjusting mechanism 3, latter fixing group 4, linear transmission mechanism 6 and system controller 7.
Front fixing group 1 and focus adjusting mechanism 3 connect firmly by stationary magazine creel 11, and front lens barrel 8 and spacing ring 18 connect firmly with supporting seat assembly 33 by front stationary magazine creel pressing plate 9 and rear stationary magazine creel pressing plate 16.Linear transmission mechanism 6 drives zoom group 2 to move vertically, realizes focal length 110mm to two grades of zoom functions of 500mm, and latter fixing group 4 is moved vertically and then keep as the stable and imaging clearly of plane under the effect of focus adjusting mechanism 3.The optical lens that double-view field of the present utility model automatically switches connects firmly mutually by camera interface 23 and CCD camera 5, near infrared observation, detection, identification and measurement.
Figure 10 is three-dimensional explosive view of the present utility model.
Stationary magazine creel 11 includes an open front, an after-opening and is slotted along bus; Front fixing group 1 comprises front lens barrel 8, and front lens barrel 8 is provided with a rear thread hole corresponding to stationary magazine creel 11 open front tapped through holes, and described open front has tapped through hole and front lens barrel 8 to connect firmly, and after-opening has threaded hole and spacing ring 18 to connect firmly; Stationary magazine creel 11 is positioned at linear transmission mechanism 6 tops; Linear transmission mechanism 6 comprises bracket assembly 33, by front stationary magazine creel pressing plate 9, front lens barrel 8 is connected firmly with bracket assembly 33, by rear stationary magazine creel pressing plate 16, spacing ring 18 is fixed on linear transmission mechanism 6, thereby stationary magazine creel 11 is fixed on to bracket assembly 33 tops.Zoom group 2 comprises a zoom lens barrel 17, and zoom lens barrel 17 is installed in stationary magazine creel 11, is connected with coupling shaft 13 upper ends by the threaded hole being located on zoom cylinder 17; Described stationary magazine creel 11 is provided with a fluting along stationary magazine creel 11 buses, and coupling shaft 13 can move along fluting.
Linear transmission mechanism 6 comprises bracket assembly 33, a ball-screw 44, a shaft coupling 32, one second motor 31, two optoelectronic switches 14, two optoelectronic switch seats 12, two microswitches 41, two limited blocks 35, two linear cylindrical guide rails 43 and two linear bearings 10; Wherein, two linear cylindrical guide rails 43 and ball-screw 44 are set in parallel on bracket assembly 33, and ball-screw 44 is arranged on bracket assembly 33 and between two linear cylindrical guide rails 43, and feed screw nut 39 is fixed on ball-screw 44; Feed screw nut 39 connects firmly by screw with feed screw nut frame 34, and the upper end of feed screw nut frame 34 is fixed on zoom group lower carriage 37 middle parts; Two bearing bracket stands 40 are arranged on a straight line cylindrical guide 43 by a linear bearing 10 respectively; The upper end of two bearing bracket stands 40 is separately fixed at the two ends of zoom group lower carriage 37 for supporting zoom group lower carriage 37; Linear bearing 10 external cylindrical surfaces coordinate with bearing bracket stand 40 inner cylinder faces, then by screw, bearing bracket stand 40 and bearing check plate 42 are connected firmly, and linear bearing 10 is fixed in bearing bracket stand 40.Zoom group upper bracket 36 is installed in zoom group lower carriage 37 tops, and zoom group upper bracket 36 is connected with the zoom lens barrel 17 in stationary magazine creel 11 by coupling shaft 13; The second motor 31 connects ball-screw 44 by shaft coupling 32; The driving force of the second motor 31 passes torque to ball-screw 44 by shaft coupling 32, and ball-screw 44 drives zoom lens barrel 17 to seesaw along optical axis direction stationary magazine creel 11 is interior by the feed screw nut 39, feed screw nut frame 34, zoom group lower carriage 37, zoom group upper bracket 36 and the coupling shaft 13 that connect successively; Meanwhile, the linear bearing 10, bearing bracket stand 40 and the bearing check plate 42 that are connected with zoom group lower carriage 37 two ends all seesaw along linear cylindrical guide rail 43 thereupon.
Focus adjusting mechanism 3 comprises a spacing ring 18, direct current first motor 19 and the gear set 20 of an outer focusing ring 21, with reducer casing; Wherein, spacing ring 18 front end tapped through holes, corresponding to the threaded hole of stationary magazine creel 11 after-openings, connect firmly spacing ring 18 and stationary magazine creel 11, and by rear stationary magazine creel pressing plate 16, spacing ring 18 and bracket assembly 33 rear ends are connected firmly; These spacing ring 18 rear ends are connected with rear fixing group of spacing ring 22; Rear fixing group 4 comprises a rear stationary magazine creel 30, and rear stationary magazine creel 30 is positioned at spacing ring 18, and described spacing ring 18 is provided with the fluting that is 5.5mm along cylinder bus and effective travel in order to limit focusing amount.
Collar 29 and outer focusing ring 21 are arranged on the external cylindrical surface of spacing ring 18, and described outer focusing ring 21 external cylindrical surfaces are provided with gear, are connected with gear set 20; Outer focusing ring 21 inner cylinder faces are provided with the square thread that pitch is 4mm, in the threaded hole that rear stationary magazine creel 30 is provided with, guide pin is installed, after this guide pin stretches out from the fluting of the cylinder bus of spacing ring 18, its end is positioned at the groove of outer focusing ring 21 square threads and can slides along this groove.The first motor 19 connects outer focusing ring 21 by gear set 20, the first motor 19 connected system controllers 7, after zoom completes, need to focus if image planes are clear not time, making system controller 7 control the first motor 19 by the button connecting on system controller 7 starts, the driving force of the first motor 19 is delivered to outer focusing ring 21 by gear set 20, in the time that outer focusing ring 21 rotates, guide pin on rear stationary magazine creel 30 is interior slip of groove of focusing ring 21 square threads outside, after driving, stationary magazine creel 30 seesaws along axis direction spacing ring 18 is interior, carry out trace focusing, thereby make image planes clear.
Described spacing ring 18 is provided with an external thread, and the internal thread being provided with rear fixing group of spacing ring 22 is connected, and rear fixing group of spacing ring 22 supports by the back up pad 28 being connected on bracket assembly 33; Rear fixing group spacing ring 22 is provided with threaded hole the guide pin of one level is installed, camera interface 23 is provided with a threaded hole guide pin of one level is installed, rear fixing group spacing ring 22 inner cylinder faces coordinate with camera interface 23 external cylindrical surfaces, rear fixing group spacing ring 22 is provided with an external thread, the internal thread being provided with gland 24 is connected, gland 24 inner cylinder faces coordinate with camera interface 23 external cylindrical surfaces, and the mutual barrier effect by two guide pins on same circumference prevents that camera interface 23 from rotating with gland 24.Camera interface 23 and gland 24 are parallel with surface level for adjusting the horizontal direction of CCD camera 5.
In the internal thread hole of rear fixing group spacing ring 22, sealing gasket 27, rear cover glass 26 and trim ring 25 are installed successively.
Figure 11 is vertical view of the present utility model.One baffle plate 15 and microswitch baffle plate 38 are arranged on respectively the both sides of zoom group lower carriage 37 by screw; Two optoelectronic switches 14 are arranged on a side of bracket assembly 33 by optoelectronic switch seat 12 and are positioned at the two ends of bracket assembly 33 length directions, two optoelectronic switches 14 and baffle plate 15 are positioned at the same side of bracket assembly 33, while triggering for being blocked by baffle plate 15, provide acceleration, deceleration signal, thereby improve zoom speed; Two microswitches 41 are arranged on the opposite side of bracket assembly 33 by limited block 35 and are positioned at the two ends of bracket assembly 33 length directions, two microswitches 41 and microswitch baffle plate 38 are positioned at the same side of bracket assembly 33, and zoom position signal is provided while triggering for being contacted by microswitch baffle plate 38.
System controller 7 is connected respectively with two optoelectronic switches, two microswitches, the first motor 19 and the second motor 1; For receiving the signal of two optoelectronic switches and two microswitches, and for the first motor 19, the second motor 31 are driven and controlled.
In the present embodiment, the second motor 31 adopts the direct current generator of 12V.The helical pitch of ball-screw 44 is 2mm.System controller 7 adopts micro-chip processor.
The utility model can carry out double-view field automatic switchover under the control of system controller 7.The mode automatically switching can adopt the visual field automatic switching mode of ordinary optical camera lens, also can be in the following way:
In the time that camera lens of the present utility model needs zoom, making system controller 7 control the second motor 31 by the button on system controller 7 drives zoom group 2 interior along optical axis direction accelerated motion at stationary magazine creel 11, when the baffle plate 15 that is arranged on zoom group lower carriage 37 1 sides triggers first optoelectronic switch 14, this optoelectronic switch 14 sends signal to system controller, system controller 7 is controlled the second motor 31 and is driven zoom group 2 uniform motion, when baffle plate 15 triggers second optoelectronic switch 14, this optoelectronic switch 14 sends signal to system controller, system controller 7 is controlled the second motor 31 and is driven 2 retarded motions of zoom group, when microswitch baffle plate 38 triggers arbitrary microswitch 41, this microswitch 41 sends signal to system controller, and system controller 7 is controlled the second motor 31 and stopped operating.Realization can improve lens zoom speed can prevent that again zoom group 2 movement velocitys are excessive.Wrong when microswitch 41 trigger pips, when system controller 7 is not controlled the second motor 31 and stopped operating, bearing check plate 42 can block for limited 35 in the time arriving limited block 35, thereby plays position limitation protection effect.
When short Jiao of camera lens of the present utility model, as shown in Figure 2, when long Jiao, optical system diagram as shown in Figure 3 for optical system diagram.As shown in Figure 2,3, when zoom group 2 be switched near after fixing group of 4 Shi Weikuan visual fields, position, be switched near front fixing group of 1 Shi Weizhai visual field, position.The task of the front fixing group 1 correction senior aberration of bearing, zoom group 2 plays the effect of zoom, and latter fixing group 4 is played effect fixing and that focus.
Above-described embodiment is only to give an example for convenience of description, and the interest field that the utility model is advocated should be as the criterion with described in claim certainly, but not only limits to above-described embodiment.
Claims (8)
1. the optical lens that double-view field automatically switches, is characterized in that, comprises following part:
One linear transmission mechanism (6): comprise a bracket assembly (33), a ball-screw (44), a shaft coupling (32), the second motor (31); It is upper that described ball-screw (44) is arranged on bracket assembly (33), and the second motor (31) connects ball-screw (44) by shaft coupling (32), and ball-screw (44) is connected with zoom group (2), for zoom group (2) provides driving force;
One stationary magazine creel (11): comprise that one along bus fluting, front lens barrel (8) and spacing ring (18) are connected to stationary magazine creel (11) two ends;
One front fixing group (1): comprise a front lens barrel (8), this front lens barrel (8) connects firmly with the front end of stationary magazine creel (11), and front lens barrel (8) connects firmly with the front end of bracket assembly (33);
One focus adjusting mechanism (3): comprise a spacing ring (18), an outer focusing ring (21), direct current the first motor (19) and the gear set (20) with reducer casing, this spacing ring (18) front end and stationary magazine creel (11) connect firmly, and spacing ring (18) connects firmly with bracket assembly (33) rear end; This spacing ring (18) rear end is connected with rear fixing group of spacing ring (22); The first motor (19) connects outer focusing ring (21) by gear set (20); Outer focusing ring (21) is arranged on the external cylindrical surface of spacing ring (18), and described spacing ring (18) is provided with a fluting along cylinder bus; This first motor (19) is connected with outer focusing ring (21) by gear set (20), the first motor (19) drive gear set (20) thus the rotation outer focusing ring of drive (21) rotates;
One zoom group (2): comprise a zoom lens barrel (17), this zoom lens barrel (17) is positioned at stationary magazine creel (11), this zoom lens barrel (17) is connected with linear transmission mechanism (6) by coupling shaft (13), zoom lens barrel (17) passes through the driving of the second motor (31) and ball-screw (44), thereby axially moves along stationary magazine creel (11) bus fluting;
One rear fixing group (4): comprise a rear stationary magazine creel (30), rear stationary magazine creel (30) is positioned at spacing ring (18), the upper banking pin of installing of rear stationary magazine creel (30) slides along the internal thread of outer focusing ring (21), and rotatablely moving of outer focusing ring (21) is converted to rear stationary magazine creel (30) seesawing along optical axis direction in spacing ring (18);
One lens combination: the lens combination that is separately installed with concentric setting in front lens barrel (8), zoom lens barrel (17) and rear stationary magazine creel (30).
2. the optical lens that double-view field as claimed in claim 1 automatically switches, it is characterized in that, described camera lens also comprises a system controller (7), and described linear transmission mechanism (6) also comprises baffle plate (15), two optoelectronic switches (14), two optoelectronic switch seats (12), two microswitches (41) and two limited blocks (35); Described baffle plate (15) and microswitch baffle plate (38) are arranged on respectively the both sides of zoom group lower carriage (37); Two optoelectronic switches (14) are arranged on a side of bracket assembly (33) by optoelectronic switch seat (12) and are positioned at the two ends of bracket assembly (33) length direction; Two microswitches (41) are arranged on the opposite side of bracket assembly (33) by limited block (35) and are positioned at the two ends of bracket assembly (33) length direction; System controller (7) is connected respectively with two optoelectronic switches, two microswitches, the first motor (19) and the second motor (1).
3. the optical lens that double-view field as claimed in claim 1 automatically switches, it is characterized in that, on support frame as described above assembly (33), be also provided with two linear cylindrical guide rails (43) that are parallel to ball-screw (44), two bearing bracket stands (40) are arranged on a straight line cylindrical guide (43) by a linear bearing (10) respectively; The two ends that the upper end of two bearing bracket stands (40) is separately fixed at zoom group lower carriage (37) are used for supporting zoom group lower carriage (37).
4. the optical lens that double-view field as claimed in claim 3 automatically switches, it is characterized in that, the external cylindrical surface of described linear bearing (10) coordinates with bearing bracket stand (40) inner cylinder face, by screw, bearing bracket stand (40) and a bearing check plate (42) are connected firmly again, linear bearing (10) is fixed in bearing bracket stand (40).
5. the optical lens that double-view field as claimed in claim 1 automatically switches, is characterized in that, the lens combination in described front lens barrel (8) is a positive lens, a negative lens, a cemented doublet and a negative lens of installing with one heart successively by after forward direction.
6. the optical lens that double-view field as claimed in claim 1 automatically switches, is characterized in that, the lens combination in described zoom lens barrel (16) is a positive lens, a cemented doublet and a positive lens of installing with one heart successively by after forward direction.
7. the optical lens that the double-view field as described in claim 5 or 6 automatically switches, is characterized in that, described cemented doublet is made up of two positive lenss that bond together with one heart and a negative lens.
8. the optical lens that double-view field as claimed in claim 1 automatically switches, is characterized in that, the lens combination in described rear stationary magazine creel (30) is a negative lens, a positive lens, a negative lens and a positive lens of installing with one heart successively by after forward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834512.9U CN203705717U (en) | 2013-12-16 | 2013-12-16 | Optical lens capable of switching automatically double fields of view |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834512.9U CN203705717U (en) | 2013-12-16 | 2013-12-16 | Optical lens capable of switching automatically double fields of view |
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| Publication Number | Publication Date |
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| CN203705717U true CN203705717U (en) | 2014-07-09 |
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| CN201320834512.9U Withdrawn - After Issue CN203705717U (en) | 2013-12-16 | 2013-12-16 | Optical lens capable of switching automatically double fields of view |
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| CN (1) | CN203705717U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676083A (en) * | 2013-12-16 | 2014-03-26 | 西安天和防务技术股份有限公司 | Optical lens with double view fields capable of being switched automatically and method for automatic switching of double view fields of optical lens |
| CN106772934A (en) * | 2016-12-07 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | A kind of changeable dual field-of-view infrared optical system |
| CN108089392A (en) * | 2016-11-23 | 2018-05-29 | 北京遥感设备研究所 | A kind of vehicular photoelectric equipment double-view field rotary cutting transformation times mechanism |
| CN109752915A (en) * | 2017-11-01 | 2019-05-14 | 广州长步道光电科技有限公司 | A kind of 360 ° are looked around outer wall detector lens structure |
-
2013
- 2013-12-16 CN CN201320834512.9U patent/CN203705717U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676083A (en) * | 2013-12-16 | 2014-03-26 | 西安天和防务技术股份有限公司 | Optical lens with double view fields capable of being switched automatically and method for automatic switching of double view fields of optical lens |
| CN103676083B (en) * | 2013-12-16 | 2016-01-13 | 西安天和防务技术股份有限公司 | The optical lens that a kind of double-view field automatically switches and double-view field automatic switching method thereof |
| CN108089392A (en) * | 2016-11-23 | 2018-05-29 | 北京遥感设备研究所 | A kind of vehicular photoelectric equipment double-view field rotary cutting transformation times mechanism |
| CN106772934A (en) * | 2016-12-07 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | A kind of changeable dual field-of-view infrared optical system |
| CN109752915A (en) * | 2017-11-01 | 2019-05-14 | 广州长步道光电科技有限公司 | A kind of 360 ° are looked around outer wall detector lens structure |
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