CN202305967U

CN202305967U - Focusing lens

Info

Publication number: CN202305967U
Application number: CN201120449075XU
Authority: CN
Inventors: 郭晓星; 胡达聪; 阳志勇; 丘恩其
Original assignee: SHENZHEN JETVIEW ELECTRONICS CO Ltd
Current assignee: SHENZHEN JETVIEW ELECTRONICS CO Ltd
Priority date: 2011-11-14
Filing date: 2011-11-14
Publication date: 2012-07-04
Anticipated expiration: 2021-11-14

Abstract

The utility model discloses a focusing lens comprising a lens barrel, a pedestal and a spring; wherein the pedestal is cylindric, the lens barrel is in threaded connection with the pedestal; the spring is sleeved at a position where the lens barrel is in threaded connection with the pedestal; and one end of the spring is fixed on the pedestal, the other end of the spring is fixed on the lens barrel. By adopting the technical scheme of the focusing lens of the utility model, relative displacements between parts of the lens and between the lens barrel and the pedestal caused by shock and temperature changes can be effectively reduced, thereby overcoming the problem of out-of-focus after a camera is used for some time.

Description

A kind of focusing lens

Technical field

The utility model relates to the safety monitoring industry, relates in particular to a kind of lens driving apparatus, refers in particular to a kind of focusing lens.

Background technology

Progress along with photographic technology; Modern camera apparatus all has the function of focusing mostly; Can both form images at camera clearly so that be positioned at the object at different distance place; And so-called focusing is the position of adjustment camera lens, and the light that gets in the camera can be focused on the position the most correct in the camera, and so captured image could clearly be noted down among camera.

For under the constant situation of ambient light illumination; As in the lift car, in the sealing corridor, in the room of no sunlight direct projection; All can select the manual iris camera lens for use; Can just debug in the examination the actual illumination according to environment in system like this, the size of disposable definite lens aperture obtains satisfied brightness picture and gets final product.

Video camera is the nucleus equipment in the safe protection engineering; Suitable video camera is directly connected to the height of safe protection engineering quality; In the safety monitoring industry; Because there is defective in fixed aperture manual focusing lens construction, the video camera that causes installing and fixing aperture manual focusing camera lens occurs losing burnt after use a period of time.

The utility model content

The technical matters that the utility model mainly solves provides a kind of camera lens device, and this device can reduce between camera lens self part and the relative displacement between lens barrel and the pedestal.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of focusing lens are provided, comprise lens barrel, pedestal and spring; Said pedestal is cylindric; Said lens barrel is connected with said base thread; Said spring housing places the threaded connection place of said lens barrel and pedestal, and an end of said spring is fixed on the said pedestal, and the other end is fixed on the said lens barrel.

Wherein, said pedestal is provided with female screw, and said lens barrel is provided with pin thread, and said pedestal and lens barrel screw togather an end and be provided with multidiameter, and said spring one end is fixed in this multidiameter step end face, and the other end is fixed on the lens barrel.

Wherein, said pedestal one end radially is provided with boss along it, and said spring one end is welded on the said microscope base boss surface.

Wherein, said pedestal one end radially is provided with boss along it, and said boss surface is circumferentially with step trough, and said spring one end is against said step trough edge.

Wherein, said pedestal one end radially is provided with boss along it, and said boss surface is provided with through hole, and an end hook joint of said spring is on pedestal.

The beneficial effect of the utility model is: the fixed aperture manual focusing camera lens that is different from prior art; Use camera lens CS seat, cause video camera to be prone to lose burnt problem, the technical scheme of the utility model; Cancellation camera lens CS seat; Therefore threaded connection place mounting spring between lens barrel and pedestal can effectively reduce because the relative displacement between vibrations and camera lens that temperature Change causes self part, between lens barrel and the pedestal, thereby overcome the mistake Jiao problem after video camera uses a period of time.

Description of drawings

Fig. 1 is a kind of embodiment synoptic diagram of the utility model focusing lens.

1 lens barrel; 2 springs; 3 multidiameters; 4 boss; 5 pedestals; 6 step troughs.

Embodiment

By the technology contents, the structural attitude that specify the utility model, realized purpose and effect, know clearly below in conjunction with embodiment and conjunction with figs. and give explanation.

See also Fig. 1, the utility model embodiment, said focusing lens comprise lens barrel 1, pedestal 5 and spring 2.Said pedestal 5 is cylindric; Said lens barrel 1 is threaded with said pedestal 5; Said spring 2 is placed on the threaded connection place of said lens barrel 1 and pedestal 5, and an end of said spring 2 is fixed on the said pedestal 5, and the other end is fixed on the said lens barrel 1.

Said lens barrel 1 is threaded with said pedestal 5; Said lens barrel 1 can be said relatively pedestal 5 move along optical axis direction; Application is threaded, and for lens barrel 1 can be moved along optical axis direction along the pedestal direction, can realize through the mode of turn lens barrel 1; This mode of operation all has application in existing camcorder technology, only simply describe at this.

In one embodiment, said spring housing 2 places the threaded connection place of said lens barrel 1 and pedestal 5, and an end of said spring 2 is fixed on the said pedestal 5, and the other end is fixed on the said lens barrel 1.Promptly realized spring 2 is fixed in the purpose of lens barrel 1 and pedestal 5 through this programme.

The present technique scheme has been removed the method for using camera lens CS seat in the conventional art; Mounting spring 2 between lens barrel 1 and pedestal 5; The elastic force of applied spring 2 and restoring force; Can effectively reduce because the relative displacement between vibrations and camera lens self part that temperature Change caused, between lens barrel 1 and the pedestal 5, thereby overcome the mistake Jiao problem after video camera uses a period of time.

In a progressive scheme, said pedestal 5 is provided with female screw, and said lens barrel 1 is provided with pin thread, and said pedestal 5 screws togather an end with lens barrel 1 and is provided with multidiameter 3, and said spring 2 one ends are fixed in this multidiameter 3 step end faces, and the other end is fixed on the lens barrel 1.It is external with 5 of pedestals that present technique scheme, said spring 2 are sheathed on said lens barrel 1, and be fixed on the step end face of pedestal 5 multidiameters 3.The present technique scheme has not only been reached said camera lens and can have been reduced vibrations, the purpose of the relative displacement between camera lens self part, between lens barrel 1 and the pedestal 5, and shortened the length of spring, and use the video camera that this camera lens is processed, lighter in use.

In another progressive scheme, said pedestal 5 one ends radially are provided with boss along it, and said spring 2 one ends are welded on said pedestal 5 boss surface, through the mode of welding, can closely fix.

In another progressive scheme, said pedestal 5 one ends radially are provided with boss along it, and said boss surface is circumferentially with step trough 6, and said spring one end is against said step trough 6 edges.The mode fixing spring 2 of using butt is easy to operate, because in the present technique scheme, spring 2 does not also require and pedestal 5 and very firm the joining of lens barrel 1, only requires that spring 2 can be placed on lens barrel 1 periphery, the mode of therefore using butt gets final product.Said spring 2 can also be sheathed between lens barrel 1 and the pedestal 5 and fixes through other type.In this embodiment, on said boss surface, be provided with through hole, then pedestal 5 is fixed on the video camera, concrete can be fixing with screw etc., this structure is easy for installation, and is simple to operate.In addition, an end of said spring 2 can be through the through hole hook joint that is complementary with spring 2 on pedestal 5.This scheme also can be fixed in spring 2 between said lens barrel 1 and the pedestal 5, reaches same effect.

The above embodiment; Cancelled the CS seat of camera lens in the prior art; Between lens barrel and pedestal, be provided with spring; Through the elasticity of applied spring 2, characteristics such as restoring force can effectively reduce because the relative displacement between vibrations and camera lens that temperature Change causes self part, between lens barrel 1 and the pedestal 5, thereby overcome the mistake Jiao problem after shooting connects use a period of time.

The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.

Claims

1. focusing lens is characterized in that, comprise lens barrel, pedestal and spring;

Said pedestal is cylindric;

Said lens barrel is connected with said base thread;

Said spring housing places the threaded connection place of said lens barrel and pedestal, and an end of said spring is fixed on the said pedestal, and the other end is fixed on the said lens barrel.

2. focusing lens according to claim 1; It is characterized in that: said pedestal is provided with female screw, and said lens barrel is provided with pin thread, and said pedestal and lens barrel screw togather an end and be provided with multidiameter; Said spring one end is fixed in this multidiameter step end face, and the other end is fixed on the lens barrel.

3. focusing lens according to claim 1 is characterized in that: said pedestal one end radially is provided with boss along it, and said spring one end is welded on the said microscope base boss surface.

4. focusing lens according to claim 1 is characterized in that: said pedestal one end radially is provided with boss along it, and said boss surface is circumferentially with step trough, and said spring one end is against said step trough edge.

5. focusing lens according to claim 1 is characterized in that: said pedestal one end radially is provided with boss along it, and said boss surface is provided with through hole, and an end hook joint of said spring is on pedestal.