KR0128616Y1 - Real focus distance control apparatus of camera for closed circuit tv - Google Patents
Real focus distance control apparatus of camera for closed circuit tv Download PDFInfo
- Publication number
- KR0128616Y1 KR0128616Y1 KR2019930001411U KR930001411U KR0128616Y1 KR 0128616 Y1 KR0128616 Y1 KR 0128616Y1 KR 2019930001411 U KR2019930001411 U KR 2019930001411U KR 930001411 U KR930001411 U KR 930001411U KR 0128616 Y1 KR0128616 Y1 KR 0128616Y1
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- KR
- South Korea
- Prior art keywords
- ccd
- camera
- lens
- focal length
- adjusting rod
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
본 고안은 폐쇄회로텔레비젼용 카메라의 뒤초점거리조정장치에 관한 것으로, 특히 초점거리가 각기 다른 여러 렌즈를 교환장착시 뒤초점거리조정이 보다 편리한 뒤초점거리조정장치에 관한 것이다. 본 고안에 따른 조정장치는 렌즈의 광축방향에 평행한 길이방향으로 카메라의 본체에 제자리 회전가능하게 지지되는 양단을 가지며, 길이방향 외주면을 따라 숫나사가 형성된 조절용로드; 및 상기 조절용로드의 회전에 의해 상기 조절용로드의 길이방향을 따라 위치이동가능한 암나사부와, CCD외연을 취부하는 CCD지지부가 일체형성된 CCD홀더를 포함하는 것을 특징으로 한다. 이에 의해 조작이 간단하고 정확하다는 잇점이 제공된다.The present invention relates to a rear focal length adjusting device for a closed-circuit television camera, and more particularly, to a rear focal length adjusting device that is more convenient for rear focal length adjusting when different lenses having different focal lengths are replaced. The adjusting device according to the present invention has both ends rotatably supported in place in the main body of the camera in the longitudinal direction parallel to the optical axis direction of the lens, the adjustment rod is formed along the longitudinal outer peripheral surface; And a CCD holder integrally formed with a female screw part which is movable in the longitudinal direction of the adjusting rod by the rotation of the adjusting rod, and a CCD supporting part for mounting the CCD outer edge. This provides the advantage that the operation is simple and accurate.
Description
제1도는 종래의 렌즈마운트상에 취부되는 C마운트렌즈와 CS마운트렌즈를 도시하는 도면.1 is a diagram showing a C mount lens and a CS mount lens mounted on a conventional lens mount.
제2도는 본 고안에 따른 뒤초점거리조정장치의 정면도.2 is a front view of the back focal length adjusting device according to the present invention.
제3도는 제2도의 A-A선 단면도.3 is a cross-sectional view taken along the line A-A of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1,2,6 : 스크류 3 : 렌즈마운트1,2,6: screw 3: lens mount
5,9 : 캡볼트 7 : 지지브라켓5,9: Cap Bolt 7: Support Bracket
8 : CCD홀더안내홈 10 : CCD8: CCD holder guide groove 10: CCD
11 : PCB 12 : 조절용로드11: PCB 12: adjusting rod
12a : 숫나사부 14 : CCD홀더12a: Male thread 14: CCD holder
14a : 암나사부 14b : CCD지지부14a: female thread 14b: CCD support
본 고안은 폐쇄회로텔레비젼(Closed Circuit Television)용 카메라의 뒤초점거리(Back Focus Length)조정장치에 관한 것으로, 특히 초점거리가 각기 다른 여러 렌즈를 교환장착시 뒤초점거리조정이 보다 편리한 뒤초점거리조정에 관한 것이다.The present invention relates to a device for adjusting the back focus length of a camera for a closed circuit television. In particular, the rear focusing distance is more convenient when the lenses having different focal lengths are interchangeable. It's about coordination.
통상의 폐쇄회로TV용 카메라는 초정거리가 각기 다른 여러 렌즈(예를 들어 C마운트렌즈 또는 CS마운트렌즈)를 필요에 따라 교환장착할 수 있도록 범용렌즈마운트를 구비하고 있으며, 외부 노출된 렌즈를 통과한 빛이 카메라본체내부의 전하결합형소자(Charge-Coupled Device; 이하 CCD라 함)에 닿게 함으로써 광전변환을 행하는 구조를 취하고 있다. 따라서 CCD에 대한 렌즈의 뒤초점거리가 정확히 맞아야만 선명한 화상을 최종 재현할 수 있다.Conventional closed-circuit TV cameras have a universal lens mount that can be interchanged and mounted with different lenses (e.g. C-mount lenses or CS-mount lenses) that have different focal lengths, and pass through externally exposed lenses. Photoelectric conversion is carried out by bringing a light into a charge-coupled device (hereinafter referred to as a CCD) inside the camera body. Therefore, the correct back focal length of the lens with respect to the CCD can be used to achieve a clear image.
그러나 종래의 경우에는 CCD를 위치고정시킨 상태에서 전방의 렌즈마운트를 회전시킴으로써 나선식 슬라이팅이동으로 렌즈의 위치를 가변하여 뒤초점거리를 조정하였다. 제1도는 이러한 종래의 렌즈마운트(20)에 취부되는 C마운트렌즈(21)와 CS마운트렌즈(22)의 취부방식을 보인 것으로서, 사용자가 기존의 렌즈를 다른 렌즈로 교환하고자 할 때에는 3개의 고정용스크류(25)를 적절히 돌려 기존렌즈를 이탈시킨 후 다른 렌즈를 대신 나삽하게 된다. 그리고 다시 고정용스크류(25)로 죄인 후 렌즈마운트(20) 전체를 돌려서 뒤초점거리를 조정하게 되므로 매우 번거롭고 조정이 부정확할 뿐만 아니라 초점조정상태를 확고히 유지하지 못하는 단점이 있다.However, in the conventional case, the rear focal length was adjusted by varying the position of the lens by helical slitting movement by rotating the front lens mount with the CCD fixed in position. FIG. 1 shows the mounting method of the C mount lens 21 and the CS mount lens 22 mounted on the conventional lens mount 20. When the user wants to replace the existing lens with another lens, three fixed lenses are mounted. After turning the screw 25 properly, the existing lens is separated, and then another lens is inserted instead. And after tightening with the fixing screw 25, the rear focusing distance is adjusted by turning the entire lens mount 20, which is very cumbersome and not only inaccurate, but also does not maintain the focusing state firmly.
따라서 본 고안은 상기와 같은 문제점을 해결하기 위하여, 취부된 렌즈를 그대로 둔 채 CCD를 위치를 조정함으로써, 보다 손쉽고 정밀하게 뒤초점거리를 맞출 수 있도록 한 폐쇄회로TV용 카메라의 뒤초점거리조정장치를 제공하는 것을 목적으로 한다.Therefore, in order to solve the problems described above, the present invention is to adjust the position of the CCD while leaving the attached lens, so that the rear focusing distance of the closed-circuit TV camera can be easily and precisely matched the rear focusing distance. The purpose is to provide.
전술한 목적은 카메라용 렌즈를 통하여 들어온 광신호를 전기적신호로 변환하는 CCD를 갖는 폐쇄회로TV용 카메라의 뒤초점거리조정장치에 있어서, 상기 렌즈의 광축방향에 평행한 길이방향으로 상기 카메라의 본체에 제자리회전가능하게 지지되는 양단을 가지며, 길이방향 외주면을 따라 숫나사가 형성된 조절용로드; 및 상기 조절용로드의 회전에 의해 상기 조절용로드의 길이방향을 따라 위치이동가능한 암나사부와, 상기 CCD외연을 취부하는 CCD지지부가 일체형성된 CCD홀더를 포함하는 것을 특징으로 하는 폐쇄회로TV용 카메라의 뒤초점거리조정장치에 의해 해결된다.The above object is a back focal length adjusting device of a closed circuit television camera having a CCD for converting an optical signal input through a camera lens into an electrical signal, the main body of the camera being in a longitudinal direction parallel to the optical axis direction of the lens. An adjustment rod having both ends rotatably supported in place and having male threads formed along a longitudinal outer circumferential surface thereof; And a CCD holder in which a female screw portion movable in the longitudinal direction of the adjusting rod by a rotation of the adjusting rod and a CCD support portion for mounting the CCD outer edge are integrally formed. It is solved by the focal length adjusting device.
사용자의 편의를 위하여 상기 조절용로드의 일단은 카메라본체로부터 외부 노출되어 회전조작되는 것이 바람직하며, 뒤초점거리조정이 끝난 후에 상기 CCD홀더는 일정위치에서 스크류고정가능한 것이 좋다.For convenience of the user, one end of the adjusting rod is preferably exposed to the outside of the camera body to be rotated, and after completion of the rear focusing distance, the CCD holder may be screwed at a predetermined position.
이하에서 첨부한 도면을 참조하여 본 고안을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제2도는 본 고안에 따른 뒤초점거리조정장치의 정면도이며, 제3도는 제2도의 A-A선 단면도이다.2 is a front view of the back focal length adjusting device according to the present invention, and FIG.
이들 도면에 도시된 바와 같이 본 폐쇄회로TV용 카메라에는 전방측에 렌즈마운트(3)가 그리고 후방측 내부에 CCD(10)가 설치되어 있으므로, 촬상된 물체로부터의 빛은 렌즈마운트(3)에 취부될 C 또는 CS마운트렌즈를 거쳐 CCD(10)에서 광전변환되고 바로 뒤에 접속되는 인쇄회로기판(PCB, 11)에 전기신호를 전달한다.As shown in these figures, in the closed circuit TV camera, the lens mount 3 is installed at the front side and the CCD 10 is installed at the rear side, so that light from the captured object is transferred to the lens mount 3. An electrical signal is transmitted to a printed circuit board (PCB) 11 which is photoelectrically converted by the CCD 10 and connected immediately after passing through a C or CS mount lens to be mounted.
렌즈마운트(3)의 아래쪽에는 렌즈의 광축방향에 평행한 방향으로 CCD(10)를 위치이동시키기 위한 조절용로드(12)가 제자리회전가능하게 설치된다. 이를 위하여 조절용로드(12)의 일단은 외부 노출되어 회전조작수단으로서 역할하는 캡볼트(9)에 스크류(2)결합되며, 타단은 카메라본체에 고정된 지지브라켓(7)의 관통공을 지나 캡볼트(5)에 스크류(6)결합된다. 또한 조절용로드(12)의 외주면 대부분에 걸쳐서는 숫나사부(12a)가 형성되어 있다. 한편 조절용로드(12)가 숫나사부(12a)에는 CCD홀더(14)에 암나사부(14a)가 나사결합된다.An adjustment rod 12 for positioning the CCD 10 in a direction parallel to the optical axis direction of the lens is provided below the lens mount 3 so as to rotate in place. To this end, one end of the adjusting rod 12 is externally exposed and the screw 2 is coupled to the cap bolt 9 serving as a rotating operation means, and the other end passes through the through hole of the support bracket 7 fixed to the camera body. Screw 6 is coupled to the bolt (5). In addition, a male screw portion 12a is formed over most of the outer circumferential surface of the adjusting rod 12. On the other hand, the female rod portion 14a is screwed to the CCD holder 14 to the male rod portion 12a of the adjusting rod 12.
CCD홀더(14)는 암나사부(14a)가 CCD지지부(14b)가 일체성형된 것으로, CCD(10) 외연을 지지하여 CCD(10)를 전후방향(즉 광축을 따라서)으로 이동시킴으로써 뒤초점거리를 조정하기 위한 것이다. 보다 안정된 이송을 위하여 암나사부(14a)의 단부영역은 CCD홀더안내홈(8)에 의해 슬라이딩가능하게 지지되고 있으며, 조절용로드(12)의 회전조작에 의해 뒤초점거리가 정확히 맞춰진 상태에서 유지할 수 있도록 CCD홀더(14)는 외부 스크류(1)를 통하여 위치고정가능하다.The CCD holder 14 is a female threaded portion 14a in which the CCD support 14b is integrally formed, and supports the outer edge of the CCD 10 to move the CCD 10 back and forth (ie, along the optical axis). To adjust. For more stable transfer, the end region of the female threaded portion 14a is slidably supported by the CCD holder guide groove 8, and can be maintained in a state where the rear focusing distance is precisely adjusted by the rotation operation of the adjusting rod 12. The CCD holder 14 is positionable via an external screw 1 so that it can be fixed.
따라서 렌즈마운트(3)에 초점거리가 17.526㎜인 C마운트렌즈를 나사 결합시킨 경우에는 TV모니터를 보면서 선명한 화상이 될 때까지 캡볼트(9)를 적절히 돌리면 되고 그 다음 초점거리가 12.5㎜인 CS마운트렌즈로 교체하여 나사결합시킨 경우에는 CCD(10)가 앞쪽으로 오도록 캡볼트(9)를 회전시키면 된다.Therefore, when the C mount lens with a focal length of 17.526 mm is screwed onto the lens mount 3, the cap bolt 9 is rotated properly until a clear image is observed while watching a TV monitor. Then, the CS having a focal length of 12.5 mm is used. In the case of screw mounting by replacing with a mount lens, the cap bolt 9 may be rotated so that the CCD 10 is brought forward.
이상 설명한 바와같이 본 고안에 따른 폐쇄회로TV용 카메라의 뒤초점거리조정장치는 조작이 간단하고 정확한다는 잇점을 제공한다.As described above, the back focal length adjusting device of the closed circuit TV camera according to the present invention provides an advantage that the operation is simple and accurate.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930001411U KR0128616Y1 (en) | 1993-02-04 | 1993-02-04 | Real focus distance control apparatus of camera for closed circuit tv |
| DE4403345A DE4403345A1 (en) | 1993-02-04 | 1994-02-03 | Alignment device for the focus at the rear of the lens of a camera for industrial television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930001411U KR0128616Y1 (en) | 1993-02-04 | 1993-02-04 | Real focus distance control apparatus of camera for closed circuit tv |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940021480U KR940021480U (en) | 1994-09-24 |
| KR0128616Y1 true KR0128616Y1 (en) | 1998-12-01 |
Family
ID=19350314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930001411U KR0128616Y1 (en) | 1993-02-04 | 1993-02-04 | Real focus distance control apparatus of camera for closed circuit tv |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR0128616Y1 (en) |
| DE (1) | DE4403345A1 (en) |
-
1993
- 1993-02-04 KR KR2019930001411U patent/KR0128616Y1/en not_active IP Right Cessation
-
1994
- 1994-02-03 DE DE4403345A patent/DE4403345A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| KR940021480U (en) | 1994-09-24 |
| DE4403345A1 (en) | 1994-09-01 |
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