CN100529941C - Automatic black card device by camera - Google Patents
Automatic black card device by camera Download PDFInfo
- Publication number
- CN100529941C CN100529941C CNB2005101000813A CN200510100081A CN100529941C CN 100529941 C CN100529941 C CN 100529941C CN B2005101000813 A CNB2005101000813 A CN B2005101000813A CN 200510100081 A CN200510100081 A CN 200510100081A CN 100529941 C CN100529941 C CN 100529941C
- Authority
- CN
- China
- Prior art keywords
- camera
- black card
- swing arm
- card device
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details Of Cameras Including Film Mechanisms (AREA)
Abstract
An automatic black card used on camera is prepared as fixing base with built in motor on camera and fixing one end of swing arm on base in rotary mode with another end being driven by motor to carry out swing movement then connecting one end of link to swing end of swing arm and another end to black card for finalizing movement of black card automatically by driving motor built in base.
Description
[technical field]
The invention relates to a kind of automatic black card device by camera.
[background technology]
Along with popularizing of camera, the consumer has not satisfied simple the shooting.Now a lot of consumers begin with the mm professional camera special just telescope, wide-angle lens etc. of usefulness, even some consumer brings into use more professional black card when taking landscape.
The cameraman has such situation when taking, taking the light and shade contrast, when the light contrast is big, take into account high light part, and low light is partly owed to take into account the low light part cruelly, and high light part can sudden and violent excessively situation.For example clapping sunset or at sunrise, sunshine did not have sudden and violent, but personage's image is very light dim, and for example when taking night scene, the scenery on road surface is very clear, but bright billboard transition exposure.This just requires in same photo different exposure times is arranged, and makes the rational exposure of zones of different of photo.How that has different exposure times in same photo, just need to use black card this moment.
Black card is a kind of with black and the card of opaque paper manufacturing or the card bodies of other made.When the water surface under taking the setting sun or mountain valley, earlier bright sky is carried out photometry, measuring reasonable exposure needs about 2 seconds, is exposed in the ground of dark place, and measuring reasonable exposure needs about 4 seconds.The first half of camera lens front is rocked black card during formal the shooting, to block sky part (high light part), to the advanced row exposure in ground, takes away black card after 2 seconds, and whole image is exposed, and lasts 2 seconds.Superposition gets up like this, and sky ground is all by fully exposure rationally.Rock black card in the camera lens front and not only block Gao Guang, can also prevent to produce the imaging vestige on the photo, promptly can prevent silhouette effect.General exposure time can use black card to come even exposure time when longer, but exposure time more in short-term, because have little time to use black card, the metafiltration light microscopic gradually of can migrating is realized the homogeneity of exposure.
Use the technology of black calorie requirement rich experience and specialty, so can increase the use difficulty of black card.Photographer Hei Ka generally uses by rule of thumb, and exposure time may not be accurate by rule of thumb, and deceives inhomogeneous meeting stays black card-edge on photo the imaging vestige that rocks of card, and the two all can influence shooting quality.And when taking many sheet photos, rock black card for a long time, can increase photographer's workload and work difficulty.
[summary of the invention]
In view of this, be necessary to provide a kind of simple, accurate automatic black card device by camera that rocks automatically that reaches of exposure time that uses.
A kind of automatic black card device by camera, it comprises a base, a swing arm and a connecting rod, this base is fixed on the camera, and is provided with drive motor in the base; One end of this swing arm rotatably is fixed on this base, and the other end is done swing under the drive of this drive motor; This connecting rod one end is connected with the swinging end of swing arm, the other end and black card connection.
Compare prior art, described automatic black card device by camera drives swing arm and does and swing up and down with being located at the base drive motor, and the black card that swing arm drives this connecting rod again and is located at this connecting-rod head end teetertotters.Because rocking of black card is that drive motor by being located in the base is finished automatically, can not use black card easily so there is the technology of rich experience or specialty yet, and take many sheet photos, also can not increase photographer's workload and work difficulty, rocking by drive motor of Yin Heika finished again, so can avoid the bad reflection that causes because of photographer error, promptly the exposure time accuracy has raising.
[description of drawings]
Fig. 1 is the stereographic map of preferred embodiment automatic black card device by camera of the present invention.
[embodiment]
Preferred embodiment of the present invention discloses a kind of automatic black card device by camera, and it is applicable to digital camera or general camera.
See also Fig. 1, the automatic black card device by camera of preferred embodiment of the present invention comprises a base 1, a swing arm 3, a connecting rod 5 and a black card 7.
This base 1 is fixed on the flash socket 101 of camera 100, and it comprises a upper surface 11, a lower surface 13 and is opened in a groove 15 on this upper surface 11.Be provided with drive motor (figure does not show) and motor control unit (figure does not show) in this groove 15.This control module is used for the velocity of rotation or the rotation direction of controlling and driving motor, the user imports corresponding program or instruction in advance as required during use in motor control unit, or existing fixing and commonly used various programs or instruction in this motor control unit, the user therefrom chooses the fixed routine or the instruction that need and gets final product.This motor control unit is according to the velocity of rotation or the rotation direction of these programs or instruction control drive motor.Can be provided with at the lower surface 13 of base 1 and the supporting bayonet unit 17 of the flash socket 101 of camera 100 for easy for installation, this bayonet unit 17 can adopt the slide rail type buckle structure.When using black card device, this bayonet unit 17 being pushed on the flash socket 101 of camera snap fit can use, and when not using, can pull down.
These swing arm 3 one ends are fixed on by hinges fixing in the groove 15 of this base 1, and the other end drives to do at drive motor and swings up and down, and the swing speed of this swing arm 3 depends on the velocity of rotation of this drive motor.This swing arm 3 can be adopted the structure of convertible length, for example adopts the embedded stretching structure as the fishing rod structure, during use swing arm 3 is drawn out to Len req, when not using swing arm 3 is pressed into to minimum length.Swing arm 3 also can be adopted the structure that is formed by connecting by a plurality of little swing arms, between each little swing arm with being threaded, add as required during use and reduce swing arm quantity, make swing arm 3 reach Len req, when not using each little swing arm is pulled down, it can reduce the volume of automatic black card device by camera under user mode not, carries and preserve more convenient.
These connecting rod 5 one ends and swing arm 3 do not place the end in the groove 15 to be connected, and the other end of connecting rod 5 blocks 7 and is connected with deceiving.This connecting rod 5 adopts spherojoint to be connected with this swing arm 3, adopts spherojoint to connect and makes this connecting rod 5 be parked in the optional position according to relative this swing arm 3 of photographer's demand, and it is beneficial to the adjusting of black card 7 positions.An end that is not connected with swing arm 3 at connecting rod 5 can be provided with a black clip 51, can select the various black card 7 of different size when taking for use, and sandwich selected black card 7 in this black clip 51 and get final product this moment.
When using automatic black card device by camera, the black card of choosing 7 is sandwiched in this black clip 51, in motor control unit, import corresponding program or instruction, or in existing program or instruction, choose required program or instruction.Should be black when taking teetertotter automatically under card 7 the driving at drive motor.Because rocking of black card 7 is to finish automatically by being located at base 1 interior drive motor, can not use black card easily so there is the technology of rich experience or specialty yet, and take many sheet photos, also can not increase photographer's workload and work difficulty, finish because of rocking of black card 7 again by drive motor, so can avoid the bad reflection that causes because of photographer error, promptly the exposure time accuracy has raising.
Claims (7)
1. automatic black card device by camera, it is characterized in that: it comprises a base, a swing arm and a connecting rod, and this base is fixed on the camera, and is provided with drive motor in the base; One end of this swing arm rotatably is fixed on this base, and the other end is done swing under the drive of this drive motor; This connecting rod one end is connected with the swinging end of swing arm, the other end and black card connection.
2. automatic black card device by camera as claimed in claim 1 is characterized in that: this base comprises a upper surface, a lower surface and is located at a groove on this upper surface, and is provided with this drive motor in this groove.
3. automatic black card device by camera as claimed in claim 2 is characterized in that: the lower surface of this base is provided with a bayonet unit that can be connected with the flash socket of camera.
4. automatic black card device by camera as claimed in claim 1 is characterized in that: this swing arm is the insertion type stretching structure.
5. automatic black card device by camera as claimed in claim 1, this swing arm comprise a plurality of little swing arms, with being threaded, select little swing arm quantity according to behaviour in service between a plurality of little swing arms.
6. automatic black card device by camera as claimed in claim 1 is characterized in that: be connected with spherojoint between this connecting rod and this swing arm.
7. automatic black card device by camera as claimed in claim 6 is characterized in that: this connecting rod is provided with black clip away from the end end of swing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101000813A CN100529941C (en) | 2005-09-26 | 2005-09-26 | Automatic black card device by camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101000813A CN100529941C (en) | 2005-09-26 | 2005-09-26 | Automatic black card device by camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1940696A CN1940696A (en) | 2007-04-04 |
| CN100529941C true CN100529941C (en) | 2009-08-19 |
Family
ID=37958999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101000813A Expired - Fee Related CN100529941C (en) | 2005-09-26 | 2005-09-26 | Automatic black card device by camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100529941C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922982A (en) * | 2014-04-25 | 2014-07-16 | 江苏麒祥高新材料有限公司 | Preparation method of dithiocarbamic acid sulfurized cross-linking agent |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647104A (en) * | 2017-03-15 | 2017-05-10 | 广西那还用问电子商务有限公司 | Special exposure device used for camera, and camera |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3665824A (en) * | 1969-08-06 | 1972-05-30 | Agfa Gevaert Ag | Photographic apparatus with automatic exposure control |
| US4045117A (en) * | 1976-04-23 | 1977-08-30 | Jack Lerner | Combined camera lens cap and lens shade |
| CN2257036Y (en) * | 1996-11-12 | 1997-06-25 | 北京银视野科技有限责任公司 | Double blade sliding electric shutter for multi-lens stereo camera |
| CN2275722Y (en) * | 1995-10-23 | 1998-03-04 | 新普精密光学股份有限公司 | Mechanism for opening and closing shading door of dark slide of camera |
| CN2280300Y (en) * | 1996-03-14 | 1998-04-29 | 郭嘉平 | Lens hood used for professional photographer |
| US6726379B2 (en) * | 2001-03-26 | 2004-04-27 | Nidec Copal Corporation | Camera focal plane shutter |
-
2005
- 2005-09-26 CN CNB2005101000813A patent/CN100529941C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3665824A (en) * | 1969-08-06 | 1972-05-30 | Agfa Gevaert Ag | Photographic apparatus with automatic exposure control |
| US4045117A (en) * | 1976-04-23 | 1977-08-30 | Jack Lerner | Combined camera lens cap and lens shade |
| CN2275722Y (en) * | 1995-10-23 | 1998-03-04 | 新普精密光学股份有限公司 | Mechanism for opening and closing shading door of dark slide of camera |
| CN2280300Y (en) * | 1996-03-14 | 1998-04-29 | 郭嘉平 | Lens hood used for professional photographer |
| CN2257036Y (en) * | 1996-11-12 | 1997-06-25 | 北京银视野科技有限责任公司 | Double blade sliding electric shutter for multi-lens stereo camera |
| US6726379B2 (en) * | 2001-03-26 | 2004-04-27 | Nidec Copal Corporation | Camera focal plane shutter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922982A (en) * | 2014-04-25 | 2014-07-16 | 江苏麒祥高新材料有限公司 | Preparation method of dithiocarbamic acid sulfurized cross-linking agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1940696A (en) | 2007-04-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20150926 |
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| EXPY | Termination of patent right or utility model |