CN201780403U

CN201780403U - Video camera lens with novel lens tube

Info

Publication number: CN201780403U
Application number: CN2010202510595U
Authority: CN
Inventors: 黄中河; 黄中元
Original assignee: Quanzhou Southeast Photoelectric Co Ltd
Current assignee: Quanzhou Southeast Photoelectric Co., Ltd.
Priority date: 2010-07-01
Filing date: 2010-07-01
Publication date: 2011-03-30
Anticipated expiration: 2020-07-01

Abstract

The utility model relates to technical field of optics, and provides a video camera lens, which is convenient to use and has strong focusing capability, and comprises a tube and a lens body, wherein the tube is arranged at the inner circumferential side of the lens body, and a plurality of guide convex strips extending in the axial direction are uniformly, circumferentially and symmetrically distributed on one of the outer circumferential side wall of the tube and the inner circumferential side wall of the lens body; a plurality of grooves corresponding to the guide convex strips are arranged on the other of the outer circumferential side wall of the tube or the inner circumferential side wall of the lens body, and outer side edges (11') or radial inner side edges (41') of the guide convex strips are arranged in the guide grooves in a transition fit way; and the outer circumferential side wall of the tube is in clearance fit with a shaft hole of the inner circumferential side wall of the lens body.

Description

A kind of camera lens that has novel lens barrel

Technical field

The utility model belongs to optical technical field, particularly a kind of camera lens that has novel lens barrel.

Background technology

Video camera generally partly is made up of camera lens, imageing sensor, sound transducer, A/D converter, video/audio scrambler, controller, the webserver, external alert, control interface etc.Wherein

1, camera lens is as the front end component of camera lens, fixed aperture, auto iris, autozoom arranged, kind such as become doubly automatically, and it is identical with analog video camera.

2, imageing sensor has CMOS and two kinds of patterns of CCD.CMOS is a CMOS, and CMOS utilizes silicon and these two kinds of semiconductors that element is made of germanium, realizes basic function by CMOS is upward electronegative with transistor positively charged; Ccd image sensor is made of photoelectric diode that is two-dimensional arrangements on monocrystalline silicon substrate and transmission circuit thereof, and the equipment that transmits excellent image quality usually all adopts ccd image sensor, pays attention to the product of power consumption and cost and then selects cmos image sensor.

3, A/D converter is that image is become digital signal with analog signal conversion such as sound.Based on the image sensor module of CMOS pattern the interface of Direct Digital signal output is arranged, need not A/D converter; And based on the image sensor module of the CCD pattern interface if any Direct Digital output, also need not A/D converter, but, have only the simulation output interface because this module is primarily aimed at the analog video camera design, change so need carry out A/D.

4, image, vocoder, picture coding compress technique have two kinds: a kind of is the hardware encoding compression, is about to coding compression algorithm and is solidificated on the chip; Another kind is based on the software coding compression of DSP, and promptly running software carries out the encoding compression of image on DSP; Equally, the compression of sound also can be adopted hardware encoding compression and software compression, and its coding standard has forms such as MP3.

5, controller is the heart of camera lens, and it is bearing the management and the Control work of camera lens.If the hardware-compressed coding, controller is an individual components; If the software coding compression, controller is the DSP of operation encoding compression software, and promptly the two integrates.

6, the webserver provides the network function of video camera, it has adopted associated the Internet protocol such as RTP/RTCP, UDP, HTTP, TCP/IP, allow the user to use standard browser video camera to be conducted interviews, watch the camera lens and the The Cloud Terrace of realtime graphic and control video camera according to the IP address of camera lens from the PC of oneself.

7, external alert, control interface: video camera is used for engineering practical external interface is provided, and as 485 interfaces of control The Cloud Terrace, is used for the I/O mouth of alerting signal input and output.Find to have target to occur as infrared probe, the alert signal of transmitting messages is given video camera, and video camera is adjusted lens direction and video recording in real time automatically; On the other hand, when video camera has detected moving target when occurring, also can outwards send alerting signal.

Based on aforementioned each ingredient, the ultimate principle of video camera is: after camera lens input of picture signal process and voice signal are imported through microphone, be converted into electric signal by imageing sensor and sound transducer, A/D converter is converted to digital electric signal with analog electrical signal, carry out encoding compression through scrambler by certain coding standard again, under the control of controller, serve LAN (Local Area Network) or INTERNET by the webserver by certain procotol, controller can also receive alerting signal and outwards send alerting signal, and sends control signal on request.

As Fig. 1, known camera lens, it comprise lens barrel 1 ' with shank 2 ' two parts, eyeglass be located at lens barrel 1 ' on, described shank 2 ' inside circumference wall has can ccontaining lens barrel 1 ' the hole, lens barrel 1 ' relatively turnable being located on shank 2 ' madial wall of lateral wall, during lens barrel 1 ' with respect to shank 2 ' rotation, lens barrel 1 ' while moving linearly is realized zoom and focusing.Employing face contacts between its lens barrel lateral wall of said structure and the shank madial wall, need bigger moment when lens barrel moves with respect to shank when focusing like this, when accurately focusing, need spend more time, and said structure is that the madial wall by the lateral wall of lens barrel and shank relatively rotates that indentation realizes focusing and zoom, and between the two friction force is bigger during rotation, uses of a specified duration, fret wear, it is big that the gap becomes, and concentricity between the two descends, influence focusing, the precision that focuses on.

The utility model content

The purpose of this utility model provides a kind of light camera lens flexibly of adjusting.

The technical scheme that the utility model adopted is such: a kind of camera lens that has novel lens barrel, comprise lens barrel and shank, described lens barrel is located at the shank inside circumference, circumferential symmetry is laid with the guiding raised line of several part extensions vertically on the described lens barrel periphery wall, shank inside circumference wall is provided with and the corresponding groove of the raised line that leads, the outside of this guiding raised line is located in this groove along (11 ') transition fit, and is clearance fit between described lens barrel periphery wall and shank inside circumference wall axis hole.

Further: described guiding raised line quantity is 2.

Based on same inventive concept, the another kind of technical scheme that the utility model adopted is such: a kind of camera lens that has novel lens barrel, comprise lens barrel and shank, described lens barrel is located at the shank inside circumference, circumferential symmetry is laid with the guiding raised line of several part extensions vertically on the described shank inside circumference wall, described lens barrel periphery wall is provided with and the corresponding groove of the raised line that leads, the radially inner side of this guiding raised line is located in this groove along (41 ') transition fit, and is clearance fit between described lens barrel periphery wall and shank inside circumference wall axis hole.

Further: described guiding raised line quantity is 2.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: because contact area makes into now less than 10% by original 100% between lens barrel and the shank, like this between lens barrel and the shank just seldom a part contact, friction force reduces greatly, adjust very convenient, and the utility model is by the transition fit of gib block and groove between lens barrel and the shank, doing linear reciprocation moves, realize focusing and focus on, when focusing, can farthest do rectilinear motion like this, better realize the effect that focuses on along circle center.

Description of drawings

Fig. 1 is known lens construction synoptic diagram;

Fig. 2 is the lens stereo figure of the utility model embodiment one;

Fig. 3 is the lens construction synoptic diagram of the utility model embodiment one;

Fig. 4 is the lens construction synoptic diagram of the utility model embodiment two.

Embodiment

A kind of camera lens that has novel lens barrel is disclosed with reference to figure 2 and Fig. 3 embodiment one, comprise lens barrel 1 and shank 2, described lens barrel 1 is located at shank 2 inside circumference, symmetry is laid with the guiding raised line 11 of two part extensions vertically on the described lens barrel 1 periphery wall, part extension described here is meant in whole lens barrel 1 axial stroke scope, the length that guiding raised line 11 extends is enough to play guide effect and gets final product, described shank 2 inside circumference walls are provided with the corresponding groove 21 of raised line that can lead therewith, the outside of this guiding raised line 11 is located in this groove 21 along 11 ' transition fit, thereby moving, the realization linear reciprocation focuses, focus on, and be clearance fit between described lens barrel 1 periphery wall and shank 2 inside circumference wall axis holes.

With reference to figure 4, embodiment two open another kinds have the camera lens of novel lens barrel, comprise lens barrel 3 and shank 4, described lens barrel 3 is located at shank 4 inside circumference, symmetry is laid with the guiding raised line 41 of two part extensions vertically on the described shank 4 inside circumference walls, described lens barrel 3 periphery walls are provided with this guiding raised line 41 corresponding two grooves 31, the radially inner side of this guiding raised line 41 is located in this groove 31 along 41 ' transition fit, and is clearance fit between described lens barrel 3 periphery walls and shank 4 inside circumference wall axis holes.

Claims

1. camera lens that has novel lens barrel, comprise lens barrel and shank, described lens barrel is located at the shank inside circumference, it is characterized in that: circumferential symmetry is laid with the guiding raised line of several part extensions vertically on the described lens barrel periphery wall, shank inside circumference wall is provided with and the corresponding groove of the raised line that leads, the outside of this guiding raised line is located in this groove along (11 ') transition fit, and is clearance fit between described lens barrel periphery wall and shank inside circumference wall axis hole.

2. camera lens according to claim 1 is characterized in that: described guiding raised line quantity is 2.

3. camera lens that has novel lens barrel, comprise lens barrel and shank, described lens barrel is located at the shank inside circumference, it is characterized in that: circumferential symmetry is laid with the guiding raised line of several part extensions vertically on the described shank inside circumference wall, described lens barrel periphery wall is provided with and the corresponding groove of the raised line that leads, the radially inner side of this guiding raised line is located in this groove along (41 ') transition fit, and is clearance fit between described lens barrel periphery wall and shank inside circumference wall axis hole.

4. camera lens according to claim 3 is characterized in that: described guiding raised line quantity is 2.