CN201107456Y

CN201107456Y - Day and night dual-purpose type zoom lens from 4.0mm to 9.0mm with infrared night viewing function

Info

Publication number: CN201107456Y
Application number: CNU2007200087829U
Authority: CN
Inventors: 叶明华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-19
Filing date: 2007-11-19
Publication date: 2008-08-27
Anticipated expiration: 2017-11-19

Abstract

The utility model relates to an all-day zoom lens with an infrared night-vision function and a zooming range from 4.0mm to 9.0mm, which comprises a main cylinder, a focusing lens component, an aperture-adjusting component and a focus lens component, and wherein, along the incidence direction of light, the focusing lens component, the aperture-adjusting component and the focus lens component are orderly arranged inside the main cylinder; the focusing lens component is provided with three focusing lenses, and along the incidence direction of light, the three focusing lenses orderly include a convex-concave lens, a double concave lens and a convex-concave lens; the focus lens component is provided with five focus lenses, and along the incidence direction of light, the five focus lenses orderly include two double convex lenses with different specular curvatures, a double concave lens and two double convex lenses with different specular curvatures; the focusing lens component and the focus lens component can move along the axial direction of the main cylinder. The zoom lens can not only realize the infrared night-vision function but also obtain an ideal zooming range, therefore not only can clear real colorful images be obtained in the daytime, but also ideal clear images can be obtained at night, moreover, the structure is compact, and operation is simple and convenient.

Description

Day and night type 4.0mm to the 9.0mm zoom lens of tool infrared night vision function

Technical field

The utility model relates to a kind of day and night type 4.0mm to 9.0mm zoom lens of tool infrared night vision function, promptly has infrared night vision function and the zooming range zoom lens at 4.0mm to 9.0mm concurrently.

Background technology

In the security protection TV monitor system, along with the raising of people's security precautions, 24 hours continuous monitorings carried out in important place develop into a kind of trend gradually, no matter be important departments such as bank, national treasury, museum, archives, still the security protection quality of general residential quarter etc. all is crucial for improving for this.Therefore, people were developed to the direction of unglazed monitoring at night by former visible light monitoring gradually to the requirement of monitoring.The infrared night vision camera lens has unlimited wide market application prospect owing to filled up the blank of night monitoring.But, be not that a lot of producers can develop this day and night type zoom lens that has the infrared night vision function concurrently now owing to be subjected to technical restriction.Therefore, design the commanding elevation that the desirable infrared night vision zoom lens of a kind of zooming range will this safety monitoring development trend of the steady continuous monitoring of energy rate preemption.

Summary of the invention

The utility model relates to a kind of day and night type 4.0mm to 9.0mm zoom lens of tool infrared night vision function, this camera lens not only helps obtaining desirable zooming range when realizing the infrared night vision function, thereby can obtain realistic colour image clearly by day, also can obtain desirable distinct image at night, and compact conformation, easy and simple to handle.

The purpose of this utility model is achieved in that day and night type 4.0mm to the 9.0mm zoom lens of this tool infrared night vision function, comprise main tube and be located at the inboard focusing lens chip module of main tube successively along the light incident direction, aperture adjusting part and focusing lens assembly, it is characterized in that: described focusing lens chip module is provided with three focusing lenss, along the light incident direction, described three focusing lenss are followed successively by meniscus, biconcave lens and meniscus, described focusing lens assembly is provided with five condenser lenses, along the light incident direction, described five condenser lenses are followed successively by two different biconvex lens of eyeglass curvature, two biconvex lens that biconcave lens and curvature mirror are different, described focusing lens chip module and focusing lens assembly can move axially along main tube.

Distinguishing feature of the present utility model is that zoom technology and infrared night vision technology are combined, camera lens is suitable for wave band expands night-viewable scope to, realizing that camera lens is in 4.0mm to 9.0mm scope in the free zoom, also realized the normal imaging of camera lens at 400nm～950nm wave band, make to obtain realistic colour image clearly by day, also can obtain desirable distinct image at night by this camera lens.

In addition, this camera lens has also been simplified the camera lens inner structure when zoom function and infrared night vision function are combined, therefore, also have the advantage of compact conformation, small volume and less weight.

Description of drawings

Fig. 1 is the organigram of the utility model embodiment.

Embodiment

Day and night type 4.0mm to the 9.0mm zoom lens of tool infrared night vision function of the present utility model, comprise main tube 1 and the focusing lens chip module 2 of being located at main tube 1 inboard along the light incident direction successively, aperture adjusting part 3 and focusing lens assembly 4, described focusing lens chip module 2 is provided with three focusing lenss, along the light incident direction, described three focusing lenss are followed successively by meniscus 5, biconcave lens 6 and meniscus 7, described focusing lens assembly 4 is provided with five condenser lenses, along the light incident direction, described five condenser lenses are followed successively by two different biconvex lens 8 of eyeglass curvature and 9, two biconvex lens 11 that biconcave lens 10 and curvature mirror are different and 12, described focusing lens chip module 2 and focusing lens assembly 4 can move axially along main tube 1.

In order to carry out manual focusing, above-mentioned focusing lens chip module 2 is provided with the focusing eyeglass positioning tube 13 that is positioned at main tube 1, described focusing eyeglass positioning tube 13 outside portions are provided with guide pin 14, the outside of described main tube 1 is provided with can be relative to main tube 1 focusing ring that rotates 15, described focusing ring 15 is done axial slip through worm drive secondary 16 and guide pin 14 drive focusing lens chip modules 2 main relatively tubes 1, described worm drive pair 16 comprises to be located at the spirality conduit 17 on main tube 1 perisporium and to be located at the straight line groove 18 that parallels with main tube 1 axial line on focusing ring 15 internal perisporiums, and described guide pin 14 passes spirality conduit 17 and stretches and places in the straight line groove 18.

In order to carry out Manual focusing, above-mentioned focusing lens assembly 4 is provided with the focusing lens positioning tube 19 that is positioned at main tube 1, described focusing lens positioning tube 19 outside portions are provided with guide pin 20, the outside of described main tube 1 is provided with can be relative to main tube 1 focusing ring that rotates 21, described focusing ring 21 is done axial slip through worm drive secondary 22 and guide pin 20 drive focusing lens assemblies 4 main relatively tubes 1, described worm drive pair 22 comprises to be located at the spirality conduit 23 on main tube 1 perisporium and to be located at the straight line groove 24 that parallels with main tube 1 axial line on focusing ring 21 internal perisporiums, and described guide pin 20 passes spirality conduit 23 and stretches and places in the straight line groove 24.

In the present embodiment, the diaphragm rotating ring of said aperture adjusting part 3 is by the 25 driving work of CD-ROM drive motor.

In different embodiment, also the regulating ring that can be connected with the diaphragm rotating ring of aperture adjusting part in the outer circumferential side setting of aperture adjusting part 3 rotates to drive the diaphragm rotating ring.

Claims

1, a kind of day and night type 4.0mm to 9.0mm zoom lens of tool infrared night vision function, comprise main tube and be located at the inboard focusing lens chip module of main tube successively along the light incident direction, aperture adjusting part and focusing lens assembly, it is characterized in that: described focusing lens chip module is provided with three focusing lenss, along the light incident direction, described three focusing lenss are followed successively by meniscus, biconcave lens and meniscus, described focusing lens assembly is provided with five condenser lenses, along the light incident direction, described five condenser lenses are followed successively by two different biconvex lens of eyeglass curvature, two biconvex lens that biconcave lens and curvature mirror are different, described focusing lens chip module and focusing lens assembly can move axially along main tube.

2, day and night type 4.0mm to the 9.0mm zoom lens of tool infrared night vision function according to claim 1, it is characterized in that: described focusing lens chip module is provided with the focusing eyeglass positioning tube that is positioned at main tube, described focusing eyeglass positioning tube outside portion is provided with guide pin, the outside of described main tube is provided with can be relative to main focusing ring that rotates, described focusing ring is done axial slip through worm drive pair and the main relatively tube of guide pin drive focusing lens chip module, described worm drive pair comprises to be located at the spirality conduit on the main tube perisporium and to be located at the straight line groove that parallels with main tube axial line on the focusing ring internal perisporium, and described guide pin passes the spirality conduit and stretches and places in the straight line groove.

3, day and night type 4.0mm to the 9.0mm zoom lens of tool infrared night vision function according to claim 1 and 2, it is characterized in that: described focusing lens assembly is provided with the focusing lens positioning tube that is positioned at main tube, described focusing lens positioning tube outside portion is provided with guide pin, the outside of described main tube is provided with can be relative to main focusing ring that rotates, described focusing ring is done axial slip through worm drive pair and the main relatively tube of guide pin drive focusing lens assembly, described worm drive pair comprises to be located at the spirality conduit on the main tube perisporium and to be located at the straight line groove that parallels with main tube axial line on the focusing ring internal perisporium, and described guide pin passes the spirality conduit and stretches and places in the straight line groove.

4, day and night type 4.0mm to the 9.0mm zoom lens of tool infrared night vision function according to claim 3, it is characterized in that: the diaphragm rotating ring of described aperture adjusting part is worked by the CD-ROM drive motor-driven.

5, day and night type 4.0mm to the 9.0mm zoom lens of tool infrared night vision function according to claim 3, it is characterized in that: the outer circumferential side of described aperture adjusting part is provided with regulating ring, and described regulating ring is connected to drive its rotation with the diaphragm rotating ring of aperture adjusting part.