CN2376633Y - Rear curtain flash-synchronising type camera - Google Patents
Rear curtain flash-synchronising type camera Download PDFInfo
- Publication number
- CN2376633Y CN2376633Y CN 99228692 CN99228692U CN2376633Y CN 2376633 Y CN2376633 Y CN 2376633Y CN 99228692 CN99228692 CN 99228692 CN 99228692 U CN99228692 U CN 99228692U CN 2376633 Y CN2376633 Y CN 2376633Y
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- CN
- China
- Prior art keywords
- camera
- flash
- shutter
- curtain
- switch
- 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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Abstract
The utility model relates to a rear shutter synchro flash type camera, which is additionally provided with a reed type rear shutter synchro flash switch on the basis of a focal plane type electronic shutter camera, wherein, the rear shutter synchro flash switch is installed on a shutter assembly circuit board which is at the corresponding position of a linking pin at the end part of a swivel arm of a rear shutter release lever, and connected in series between a front shutter synchro flash switch and the flash contact on the top of a camera cover. With the utility model, common focal plane type electronic shutter cameras can also take photos with the strong real effects of movement traces remaining at the back of moving bodies. The utility model has the advantages of reasonable design, simple structure, etc., and is suitable to be installed on the existing cameras as well as installed by camera manufacturers.
Description
The utility model relates to a kind of camera, the camera of particularly a kind of focal plane electronic shutter.
The shutter of focal plane electronic shutter camera is made up of preceding curtain and back curtain, block in turn in the film front, when camera when winding up state, will when the back curtain is opened, close preceding curtain, curtain continues to block film not by sensitization after being taken over by preceding curtain; When pressing the shutter snapper and take pictures, preceding curtain also is unlocked and since the both unmatched curtain in film front also without male offspring curtain block, at this moment, film is by photosensitive camera, when finish timing up, back curtain is become by unlatching closes, and blocks film with the back curtain and is no longer made camera be in release conditions by sensitization; When winding up, camera then repeats the back curtain is closed preceding curtain when becoming unlatching by closing again, and replaces the back curtain to continue to block film by preceding curtain and is not in the state that winds up of taking pictures prepared by sensitization.When camera and flashlamp are used, by the flash of light of flash trigger switch control flashlamp, and the contact seat board of flash trigger switch is installed on the curtain axle, conducting between this flash trigger switch photophase that curtain is closed after preceding curtain is opened to, and disconnect At All Other Times, so all finish in a flash at preceding curtain opening process the peak period of each flash of light, curtain synchronization flash camera before being called, captured photo are present common photo.But, if in the environment of night or dark, take when having the moving object of luminous point, automobile, motorcycle etc. as motion, usually adopt the shooting of glistening of slower shutter speed, therefore, the car light isoluminescence point all can be taken into the track of motion in long timing up, and other parts can only be clear could taking in a flash of flashlamp flash of light, captured photo then is that the movement locus of luminous point has been gone to the front of moving object, is not inconsistent with actual conditions.In order to photograph the photo that the movement locus of luminous point is stayed the moving object back,, to cooperate Nikon SB-26, SB-27 type flashlamp as Nikon F4, F5, F90X type camera just have only the high-grade camera that has back curtain synchronization flash function of import to take at present; The EOS650 of Canon, EOS620 join the high gear camera of models such as 300EZ, 420EZ type flashlamp and just are furnished with back curtain flash function, and the camera of models such as common camera such as sea-gull DF-300, phoenix DC-828, the KR-10 of Ricoh is the preceding curtain synchronization flash camera of focal plane electronic shutter, can't photograph the photo of back curtain synchronization flash effect.
The purpose of this utility model is the camera of common focal plane electronic shutter will be repacked into to photograph the back curtain synchronization flash formula camera that movement locus is stayed the strong photo of the sense of reality effect at moving object rear.
Back of the present utility model curtain synchronization flash formula camera, it is curtain synchronization flash switch after increase on the basis of focal plane electronic shutter camera and flashlamp has, described back curtain synchronization flash switch is a leaf spring switch, be installed on the shutter assembly circuit board with the set bar correspondence position of curtain trip lever swivel arm end, back, before being connected between the hot-shoe flash contact of curtain synchronization flash switch and camera caping.
Accompanying drawing 1 is the structural representation that the sea-gull DF-300 type camera of one of the utility model embodiment repacks the back curtain synchronization flash switch of back curtain synchronization flash formula camera into;
Accompanying drawing 2 is structural representations that two the phoenix DC-828 type camera of the utility model embodiment repacks the back curtain synchronization flash switch of back curtain synchronization flash formula camera into;
Accompanying drawing 3 is structural representations that three the KR-10 of the Ricoh type camera of the utility model embodiment repacks the back curtain synchronization flash switch of back curtain synchronization flash formula camera into.
Referring to accompanying drawing 1-3,1 in the accompanying drawing is the movable contact spring of back curtain synchronization flash switch, the 2nd, and the static contact of back curtain synchronization flash switch, the 3rd, back curtain trip lever, the 4th, set bar, the 5th, shutter assembly circuit board.Movable contact spring 1 and static contact 2 are contained on the shutter assembly circuit board 5 with set bar 4 correspondence positions of the swivel arm end of back curtain trip lever 3, the optional elasticity of movable contact spring is reed preferably, in order to prevent short circuit, can be between sound two contacts and shutter assembly circuit board cushioning one deck insulating material, during connection, this switch series is associated between the hot-shoe flash contact of former preceding curtain synchronization flash switch and camera caping.During use, when pressing the shutter snapper and take pictures, preceding curtain is unlocked, preceding curtain synchronization flash switch conduction, but still be in off-state because of back curtain synchronization flash switch this moment, flashlamp does not glisten, when the timing up of presetting such as having only to finish, back curtain trip lever rotates counterclockwise, before back curtain trip lever 3 will be run into the back curtain and discharge latch hook, movable contact spring 1 just leans on elasticity and static contact 2 because of leaving of set bar 4 and connects, make flashlamp luminous, behind the flash of light peak of signa, back curtain trip lever is just pushed the back screen latch hook fully open approximately, make the back curtain be released and close, finish a shot.At this moment, shutter is in release conditions, back curtain synchronization flash switch connection, and preceding curtain synchronization flash switch disconnects.When winding up, back curtain trip lever clockwise rotates certain angle again, and the set bar 4 of its end turns to movable contact spring 1, promotes movable contact spring 1 and leaves static contact 2 and be in off-state, repeats said process when pressing the shutter snapper.The back curtain synchronization flash switch owing to before former, connected between the hot-shoe flash contact of curtain synchronization flash switch and camera caping, make common camera become back curtain synchronization flash formula camera, can photograph the strong photo of sense of reality effect that movement locus is stayed the moving object rear.Again because when taking the common photo of relative stationary object, back curtain flash of light is the same with the effect of preceding curtain flash of light, so the camera after the repacking does not influence former machine performance.
The utility model is curtain synchronization flash switch after the shutter assembly circuit board has increased a reed-type, makes Common focal plane electronic shutter camera becomes and can photograph movement locus and stay the true of moving object rear The rear curtain flash-synchronising type camera of the photo that the sense effect is strong. Has reasonable in design, advantages of simple structure and simple, both Be adapted at purchasing on the camera installing, also be adapted at manufacturer and install.
Claims (1)
1. curtain synchronization flash formula camera after a kind, comprise focal plane electronic shutter camera and flashlamp, curtain synchronization flash switch after it is characterized in that also including one, described back curtain synchronization flash switch is a leaf spring switch, be installed on the shutter assembly circuit board with the set bar correspondence position of curtain trip lever swivel arm end, back, before being connected between the hot-shoe flash contact of curtain synchronization flash switch and camera caping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228692 CN2376633Y (en) | 1999-06-23 | 1999-06-23 | Rear curtain flash-synchronising type camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228692 CN2376633Y (en) | 1999-06-23 | 1999-06-23 | Rear curtain flash-synchronising type camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2376633Y true CN2376633Y (en) | 2000-05-03 |
Family
ID=34018032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99228692 Expired - Fee Related CN2376633Y (en) | 1999-06-23 | 1999-06-23 | Rear curtain flash-synchronising type camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2376633Y (en) |
-
1999
- 1999-06-23 CN CN 99228692 patent/CN2376633Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |