CN1026523C - Telescop pickup and recording camera - Google Patents
Telescop pickup and recording camera Download PDFInfo
- Publication number
- CN1026523C CN1026523C CN 90108106 CN90108106A CN1026523C CN 1026523 C CN1026523 C CN 1026523C CN 90108106 CN90108106 CN 90108106 CN 90108106 A CN90108106 A CN 90108106A CN 1026523 C CN1026523 C CN 1026523C
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- Prior art keywords
- video camera
- lens
- camera
- adapter
- focal length
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Abstract
The present invention relates to a telescopic pickup and recording instrument for picking up, recording or observing at a superfar distance and monitoring a target at a superfar distance. The telescopic pickup and recording instrument is composed of a video camera (a photographic camera or a camera), an adapter and a photographic objective, wherein the adapter is composed of three groups of five optical lenses. The adapter is arranged between the video camera and the photographic objective and is coaxial with the video camera and the photographic objective. The present invention can be used for the video camera, etc. to be operated in a system with superlong focal length more than 2000 millimeters. In addition, the telescopic pickup and recording instrument has the advantages of clear image, high resolution, wide application range, simple operation and reliable performance.
Description
The present invention relates to a kind of shooting with video-corder and finder, particularly a kind ofly be used for the telescop pickup and recording camera that overlength distance is shot with video-corder or observed, monitors the overlength distance target.This telescop pickup and recording camera can make video camera or video camera, cameras work in the overlength focal length of system's focal length greater than 2,000 millimeters.
In the prior art, Sony corporation of Japan has a kind of M
3The type video camera, it forms (referring to Fig. 1) by video camera and camera lens, and video camera is connected with camera lens, this focal length of camera is short, even add a teleconverter between video camera and camera lens, its focal length can not surpass 2,000 millimeters yet, shoots with video-corder so can not carry out overlength distance; The Japanese Nikon camera has a kind of refraction-reflection long focal length lens (structural principle is referring to Fig. 2), its light is through the refraction of the big lens of annular and the reflection of large reflective mirror, to small reflector, and after its reflection, reflect away by lenslet, although the focal length of this long focal length lens is 2,000 millimeters, because it has adopted the catadioptric structure, so its image quality and image contrast are all than refraction type difference.Germany patent No. DE3409753.8 discloses a kind of name and has been called " adapter that a kind of object lens with Single-sens reflex camera are connected to video camera ", this adapter is installed between photographic lens and the video camera, remedying the unequal defective of both back focal length, and make it can the taking moving object.This adapter comprises the iris that can regulate in an aperture, one group of device and one group of device that the aperture data is converted to electrical signal data of f-number reportedly being defeated by lens isis.But because this adapter is in use, the former commanding lens of video camera must be pulled down and could take, and the former commanding lens of 1/2nd video camera all can't be dismantled, so, this adapter is installed the usable range of video camera is restricted; Simultaneously, after the former commanding lens of video camera was removed, automatic functions such as the automatic diaphragm on the camera lens, zoom function lost; In addition, this adapter only changes the back focal length of photographic lens, and does not change the total focal length of system, and the total focal length of its system still is subjected to the restriction of photographic lens focal length, so the total focal length of system still can promptly still can not carry out overlength distance yet and shoot with video-corder greater than 2,000 millimeters.
The objective of the invention is to overcome existing above-mentioned deficiency in the prior art, and a kind of clear picture, resolution height are provided, be applicable to that mainly video camera or video camera, camera carry out the telescop pickup and recording camera that overlength distance is shot with video-corder.
Purpose proposed by the invention can be achieved through the following technical solutions: former commanding lens is housed on video camera, and between video camera and photographic lens, be provided with one by three groups of five adapters that optical mirror slip is formed, this adapter structure is: first set of contact lenses is the gummed mirror that is formed by biconcave mirror and biconvex mirror gummed, second set of contact lenses is to be formed by biconvex mirror and negative meniscus lens gummed, the 3rd group is biconvex lens, and this adapter and video camera are coaxial with photographic lens.
Description of drawings is as follows:
Fig. 1 is Sony corporation of Japan M in the prior art
3The synoptic diagram of type video camera.
Fig. 2 is the structure principle chart of the catadioptric telephoto lens that the Japanese Nikon camera uses in the prior art.
The adapter structure synoptic diagram that Fig. 3 uses for the present invention.
Fig. 4 is principle of work of the present invention and structural representation.
Fig. 5 is the synoptic diagram of installing and using of the present invention.
Following the present invention will be described in further detail in conjunction with the accompanying drawings and by embodiment.
Referring to Fig. 3, adapter I used in the present invention is made up of three groups of five optical mirror slips, wherein first set of contact lenses is the two gummed mirrors that formed by biconcave mirror 1 and biconvex mirror 2 gummeds, its positive light coke equals 8.93 diopters, second set of contact lenses is to be formed by biconvex mirror 3 and negative meniscus lens 4 gummeds, its positive light coke equals 14 diopters, and the 3rd set of contact lenses is a biconvex lens 5, and its positive light coke equals 1.3 diopters.Clear aperture is 44.5 millimeters.Be the fixing spacing between biconvex lens 5 and negative meniscus lens 4 and biconvex mirror 3 and the biconvex mirror 2, be provided with interval turns 7 and 8, same, be fixing biconcave mirror 1, be provided with back-up ring 9, bayonet adapter ring 10 is used for being connected with photographic lens, and 6 is the adapter lens barrel.The optical parametric of adapter I sees Table 1.
Referring to Fig. 4, existing with the photographic lens II adopt long focus objective lens II ', and be that example describes in detail with the video camera III.The adapter I be arranged on video camera III and long focus objective lens II ' between, and with video camera III and long focus objective lens II ' coaxial, the video camera III is provided with former commanding lens, thus the automatic diaphragm effect of system still bear by the former commanding lens of video camera III, so do not establish diaphragm on the adapter I in addition.Adapter I and long focus objective lens II ' link adopt the general cassette interface of camera, then adopt sleeve type with the link of video camera III, soon the adapter I is inserted in the lens case of video camera III.Because bringing out what penetrate from adapter I one is directional light, so less demanding to the alignment of video camera III and adapter I.Simultaneously, also because the present invention has adopted the refraction type structure, so its clear picture, resolution height.Narrate the working condition of this telescop pickup and recording camera below.
In native system, long focus objective lens focal distance f
II 'With the adapter focal distance f
IBe equivalent to form a multiplying power mirror, its multiplying power β=f
II '/ f
I, when image by long focus objective lens II ' and the multiplying power mirror of adapter I composition after, image is exaggerated or has dwindled β=f
II '/ f
IDoubly, if long focus objective lens focal distance f
II 'With the adapter focal distance f
IAfter the decision, the multiplying power β of multiplying power mirror=f
II '/ f
IJust determined that also the focal length of total system is F=f like this
III* β=f
III* f
II '/ f
IIn the time will being used to dolly-out, dolly-back, can select β＞＞1, because adapter focal distance f generally speaking
IFix, as long as by changing long focus objective lens focal distance f
II 'Can obtain the total focal length F of system of needs.Referring to table 2, table 2 has illustrated that the focal length of this system can be from 437 millimeters continuous vari-focus to 2620 millimeter, and table 3 then shows when the focal length of this system equals the 437-2620 millimeter, level, vertical, cornerwise field angle angle.f
IIIBe focal length of camera.
If long focus objective lens II ' and be varifocal, multiplying power β=f then
II '/ f
ICan be with f
IVariation and change.
Certainly, also a teleconverter can be installed in adapter I and long focus objective lens II ' between, with the total focal length of further increase system.
In the present embodiment, use common camera, can shoot with video-corder at a distance by day, use low-light video camera then can shoot with video-corder at a distance, if use the half-light video camera then can under faint light, shoot with video-corder at a distance at night.
In addition, the video camera III also can be replaced with video camera or camera, and like this, video camera just can be taken distant object by day, as the active situation of wild animal; Camera also can be taken distant object by day.
Referring to Fig. 5, during use, by camera position pin 11 and video camera fixedly handwheel 12 the video camera III is fixed on the rack plate 13, slide block 14 is fixed on the lens mount 15, unclamp fixedly handwheel 16 of object lens, will be connected with the long focus objective lens II of adapter I ' be inserted in object lens fixed mount 17, the other end of adapter I then is inserted in the lens case of video camera III, screw fixedly handwheel 16 of object lens then, make long focus objective lens II ' be fixed on the support base plate 18.Be support riser 19 between rack plate 13 and the support base plate 18, tripod 20 is installed on the support base plate 18.21 are the fixing handwheel of rack plate, and 22 is the object lens focusing ring, and 23 is the object lens aperture ring, and 24 is ram, and 25 is the support tommy, and 26 are fixing handwheel.
In addition, on the video camera III, also can connect a monitor, object observing is presented on the monitor, can observe for a long time, also can many people observe simultaneously.Equally, also can insert closed-circuit television system carries signal for relevant department's authorization in time and commander at a distance.
The present invention compared with prior art, have the following advantages: 1, owing between photographic lens and video camera (or video camera, camera), be provided with one by three groups of five adapters that optical mirror slip is formed, thereby make video camera etc. can work in system's focal length greater than 2,000 millimeters overlength focal length, simultaneously, because the refraction type structure that the present invention adopts, so its clear picture, the resolution height; 2, the present invention need not remove the former commanding lens on the video camera (or video camera, camera), and is so it has kept auto iris on the former commanding lens, autozoom, various functions such as focusing automatically, applied widely; 3, the present invention has made full use of existing video camera and photographic lens, and function is many, and cheap, and simultaneously, it is simple to operate, dependable performance.
Table 1:
Radius-of-curvature (mm) optical interval (mm)
r
1The right side=-47.21 r
1A left side=36.68 d
1=3.5 d
1-2=0
r
2The right side=36.68 r
2A left side=-36.68 d
2=19.0 d
2-3=0.3
r
3The right side=60.9 r
3A left side=-29.38 d
3=16.2 d
3-4=0
r
4The right side=29.38 r
4A left side=-153.371 d
4=2.8 d
4-5=0.3
r
5The right side=47.21 r
5A left side=153.371 d
5=8.5
Table 2:
When long focus objective lens focal distance f
II '=1600mm
The adapter focal distance f
I=36.64mm
Focal length of camera f
III=10-60mm
The total focal length F=f of system then
III* f
II '/ f
I=437-2620mm
Table 3:
The total focal length F(mm of system) 437 2620
0.85 ° 0.14 ° at horizontal field of view angle
0.60 ° 0.1 ° at vertical field of view angle
1 ° 0.17 ° of diagonal line field angle
Claims (2)
1, a kind of telescop pickup and recording camera, comprise video camera and photographic lens, it is characterized in that: on video camera, be provided with former commanding lens, and between video camera III and photographic lens II, be provided with an adapter I of forming by three groups of five optical mirror slips, the structure of this adapter I is: first set of contact lenses is the two gummed mirrors that formed by biconcave mirror 1 and biconvex mirror 2 gummeds, second set of contact lenses is to be formed by biconvex mirror 3 and negative meniscus lens 4 gummeds, the 3rd group is biconvex lens 5, and this adapter I is coaxial with video camera III and photographic lens II.
2, telescop pickup and recording camera as claimed in claim 1 is characterized in that: the video camera III can be replaced with video camera or camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108106 CN1026523C (en) | 1990-09-29 | 1990-09-29 | Telescop pickup and recording camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108106 CN1026523C (en) | 1990-09-29 | 1990-09-29 | Telescop pickup and recording camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1060158A CN1060158A (en) | 1992-04-08 |
| CN1026523C true CN1026523C (en) | 1994-11-09 |
Family
ID=4880852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108106 Expired - Fee Related CN1026523C (en) | 1990-09-29 | 1990-09-29 | Telescop pickup and recording camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026523C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334621A (en) * | 2014-08-08 | 2016-02-17 | 夏新月 | Telescope with electronic teleconverter instrument |
-
1990
- 1990-09-29 CN CN 90108106 patent/CN1026523C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1060158A (en) | 1992-04-08 |
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