CN2031541U

CN2031541U - Multiple width camera accessory

Info

Publication number: CN2031541U
Application number: CN 88200959
Authority: CN
Inventors: 李向阳
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-01-21
Filing date: 1988-01-21
Publication date: 1989-01-25

Abstract

The utility model relates to a multiple width camera accessory used for a 120 twin-lens reflecting camera using 135 films, which is composed of a picture frame (1), a picture panel (3), a positioning pin (12) and a positioning mechanism for film winding. The accessory is installed in a dark box of the camera and the picture panel (3) can move from left to right corresponding to the picture frame (1). The exposure is respectively conducted on the divided lattices of the film, and the positioning mechanism for film winding can determine the corresponding distance of photo passing. The accessory can photograph the multiple widths with the styles of 135, whole width and halt width, 1/3, 1/4, 1/8, 1/9 width, etc.

Description

Multiple width camera accessory

Several face photographic accessories are to be applicable to that 120 twin-lens reflexs use 135 films, take the photograph attachment device of a series of specification breadths.

The annex that a kind of 120 bicameras use 135 films has appearred in the market, it is to adopt the camera bonnet reequiped, film chamber, roll film handwheel and rotating mechanism etc. have been set up thereon in addition, to realize taking 135 view pictures, half range, 1/4 three kinds of breadth.Its volume is big, and complex structure carries, changes equal inconvenience, especially takes the colored certificate photo of an inch with it, and after the cutting of enlarging and print, the photo of acquisition is few, waste is big; Moreover be that to take the imaging point of little picture with it far away from the primary optical axis of camera lens, thereby image quality is also bad.And for example Chinese patent CN86209144 discloses a kind of 120 twin-lens reflexs and has used 135 films instead, and can take the device of 135 view pictures, half range breadth, this device is a small front apron can be installed carry out cropping to obtain the vertical lattice exposure on film on one 135 cropping framework, but small front apron can not move, thereby can not be implemented in horizontal lattice on the film, shine breadth and be restricted.

The utility model provides a kind of shooting breadth specification many, good imaging quality, compact conformation, novel photographic accessory easy to carry.

Solution of the present utility model is: several face photographic accessories that provided, has one 135 picture framework, two frids are installed thereon, just can form a translot, in translot, insert the pictute plate that there is an exposure hole in central authorities, by changing this plate, (this plate makes a cover down to littler a series of breadths to form half range, the size of exposure hole makes 1/2 of 135 view picture breadths respectively, 1/3,1/4,1/8,1/9 etc.), a lever is set on the picture framework again, the one end connects mutually with pictute plate, and the other end is inserted in the helicla flute of pilot pin, and pilot pin is fixed on the axle of camera roll film top button.By the roll film top button of rotation camera, pilot pin is rotated like this, closely make move left and right in the translot of lever drives pictute plate on the picture framework, be implemented in the horizontal lattice exposure on the film.

The utility model is described in further detail below in conjunction with accompanying drawing:

Accompanying drawing is a concrete structure figure of the present utility model.

Picture framework (1) is arranged in the camera bellows of 120 two-lens reflex cameras among the figure, the parts that pass through on the former focal plane of camera in order to support 135 films.

Pictute plate (3) is that a cover profile width is identical (with frid (2), (5) match) and the different a series of imaging orifice plate of exposure hole size, the hole is the position in the central, the length in hole is 1/2 of 135 view pictures length, 1/3,1/4, the width in hole be that 135 view pictures are wide and view picture is wide 1/2,1/3, the length of pictute plate is decided according to the exposure hole width, when the exposure hole width is that 135 view pictures are when wide, the length of pictute plate then is the width (it is identical with camera camera bellows width again) of picture framework (1), when the exposure hole width be 135 view pictures wide 1/2,1/3 o'clock, the length of pictute plate then deducted 1/2 for the width of picture framework (1), the length that 2/3 view picture is wide.Limiting the physical dimension of pictute plate, mainly is the position of controlling pictute plate for the ease of slave outward.

Gear shaft among the figure (6) has two eight tooth gears on it, an end of axle has a three-flute locating wheel, and the other end has one four groove locating wheel, wherein all has one section separation more bigger on the locating wheel of every end, and all the other each sections are five equilibrium all.This is for after according to full one 135 full width and leave the slit between next 135 full widths.

Pilot pin (12), one helicla flute is arranged on it, one end is drilled with a hole, 135 spool spindle noses on the magazine can insert, the other end is drilled with an aperture, can be engaged on the axle of roll film top button (10) of camera, preferably give and bore a pitting on this axial plane of camera, and with the screw on the pilot pin (11) with its tightening.

The principle of taking 1/8 width of cloth is: (with reference to accompanying drawing, pictute plate (3) is the pictute plate of 1/8 width of cloth, four groove locating wheels on the gear shaft (6) are at the end that spring leaf (4) is arranged) use 135 films, when the roll film handwheel of rotary camera, because film moves forward, perforation on the film just driven gear axle (6) rotates, when film is passed by 1/4 view picture length, the spring leaf (4) that one end is fixed on the picture framework (1) sends sound with regard to the locating wheel that knocks on the gear shaft (6), to show that roll film puts in place, rotate the roll film top button (10) of camera then, pilot pin (12) on the axle that is fixed on camera film top button (10) is rotated, promotion is inserted in the helicla flute of pilot pin (12) and the end that is installed in the lever (7) on the picture framework (1) rotates around fulcrum (8), the other end of lever (7) then drives pictute plate (3) and moves in by the translot that frid (2) (5) forms up and down, when the side of pictute plate (3) is pushed up the chamber wall of camera respectively when motionless (the roll film top button on the camera revolve clockwise or counterclockwise), respectively clap one about can distinguishing; Rotate the roll film handwheel of camera again, when waiting to hear a sound, i.e. the film length of 1/4 view picture of having passed by again, the roll film top button (10) of rotation camera puts pictute plate in place, respectively claps one about again; Repeat above-mentioned action, after taking each.

When taking 1/4 width of cloth, principle is the same, but will change 1/4 pictute plate, and when hearing two sound location sound, film just puts in place during roll film.

When taking half range, view picture picture, change the half range pictute plate, or remove pictute plate and frid (during view picture), the roll film top button (10) of rotation camera keeps to the side lever, and during roll film, when hearing that two (half range) or the four tones of standard Chinese pronunciation (view picture) ring, film just puts in place.

When taking 1/9 width of cloth, then need earlier gear shaft (6) transposing direction, change 1/9 width of cloth pictute plate, the roll film top button (10) of rotation camera, when 1/9 pictute plate is moved to the position, middle, the roll film top of camera button (10) and near fuselage on carve a directrix that aligns (9), take according to the method for taking 1/8 width of cloth then, different is that the location that horizontal centre is is that aligning with directrix (9) determined.

When taking 1/3 width of cloth, change 1/3 pictute plate, during roll film, when whenever hearing a sound, promptly film puts in place.

This annex also has one one to be inserted into 135 magazine axle heads, and other end and camera film knob link to each other is connected spindle nose, a film pressure plate and corresponding a series of plates of finding a view (not drawing among the figure).

If when using 120 film, take down this annex, namely recover the function of former camera. 120 general two-lens reflex cameras, lens focus is 75 millimeters, adopt this annex 1/9 breadth (namely on 135 egative film according to nine little pictures) of photograph, taking the human head picture distance is about 3 meters, it just is the optimum distance of taking human head picture, one the 135 full width of cloth is enlarged and print into 5 inch color pictures through an automatically color correction of film processor, exposure, be cut into voluntarily nine, its film size just is the breadth of an inch photograph, use it, one 36 135 colour films can be clapped 324 of the colored certificate photos of an inch, and 144 of the colored certificate photos of two inch significantly reduce cost. Again since use it the imaging point of breadth of photograph on the primary optical axis of camera lens or very near primary optical axis, thereby good imaging quality, institute shine film again severing midway rush Expand (referring to according to behind the full width of cloth), uses very conveniently, be specially adapted to the photo studio, photograph self-employed worker and numerous shutterbugs use.

Claims

1, a kind of 120 twin-lens reflexs use several face photographic accessories of 135 films, has a picture framework (1), a pictute plate (3) and pilot pin (12), it is characterized in that in the translot of picture framework (1), but be inserted with the pictute plate (3) of a move left and right, picture framework (1) is provided with a lever (7), and one end and pictute plate (3) connect, and the other end is inserted in the helicla flute of pilot pin (12).