JPH09211791A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify constitution and to reduce cost by making the finders of a film unit with a lens dedicated to a high vision print and a film unit with a lens dedicated to an L print common. SOLUTION: Print mode information expressing that printing is performed in a high vision print range which corresponds to every photographing scheduled frame position of photographic film, whose aspect ratio is 1.75-1.76, and whose size is smaller than an aperture is prepared and the aspect ratio of a finder is set to 1.60-1.65 and the finder field rate to the longitudinal direction of the high vision print range is set to 77-86%. Or print mode information expressing that printing is performed in an L print range whose aspect ratio is 1.42-1.43, and whose size is smaller than the aperture is prepared, and the aspect ratio of the finder is set to 1.60-1.65 and the finder field rate to the longitudinal direction of the print range is set to 77-86%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit equipped with a finder capable of accommodating printed pictures of two sizes.

[0002]

2. Description of the Related Art In recent years, in order to further enhance the appeal and enjoyment of printed photographs with a camera or a film unit with a lens to general users, printed photographs with different aspect ratios are provided depending on the type and size of the photographed subject. ing. As such a print photograph, a conventional standard size L print (89 mm x 127 mm)
In addition to the panorama print (89 mm x 252 mm) that doubles the horizontal length, the high-definition print (8 mm) that approximates the aspect ratio for high-definition television broadcasting (8
9 mm × 158 mm) and the like are generally known.

On the other hand, as known from Japanese Patent Laid-Open No. 6-301157, there is proposed a photographic film cartridge in which the entire film is wound in the cartridge without the leader portion protruding from the cartridge. In such a photographic film cartridge, the entire exposure frame is photographed with the exposure range on the photographic film set to 16.7 mm x 30.2 mm.

Then, a high-definition mode (15.6 mm × 27.4 mm) set within the exposure range, L
The print data designating each mode of the size mode (15.6 mm × 22.3 mm) and the panorama mode (9.6 mm × 27.4 mm) is recorded as optical information or magnetic information for each shooting frame, and is stored in the developing station. At the time of printing with a printer, etc., a print photograph of each mode can be obtained by printing only the area corresponding to the range of each photographing mode as described above based on this print data.

As described above, a camera or a film unit with a lens having a function of designating a print mode or the like normally changes the field of view of the finder in accordance with the range of each print mode, thereby accurately controlling the print mode in each print mode. There are many things that allow the photographer to grasp a wide print range.

By the way, generally, the field of view of a finder is set narrower than the range in which a photographic film is actually exposed. This is to ensure that the shooting range confirmed by the photographer through the viewfinder is imprinted. Then, as a method of changing the view frame of the viewfinder of the camera or the film unit with the lens, for example, the view range of the viewfinder is made to correspond to the print mode of the largest size, and the view frame of the size corresponding to other print modes is set. By inserting and removing the
A method of switching to a field frame corresponding to each print mode is known.

For example, in Japanese Patent Application No. 7-15294, a field-of-view switching plate provided with an opening corresponding to L size and panoramic size is provided in front of the finder in which the field-of-view range of the finder is made compatible with high-definition size. There is described a viewfinder capable of changing the visual field range of the viewfinder in three stages of high-definition size, L size, and panoramic size by removing it.

[0008]

However, especially in the lens-fitted photo film unit whose low cost is the greatest feature, in order to meet the various needs of the market, only one of the above print modes is supported. There are also many single-function lens-equipped film units. The finder of the lens-fitted film unit corresponding to such a single print mode has a fixed visual field range.

However, as described above, when a dedicated film unit with a lens is provided for each print mode, the view range of the viewfinder must be different for each film unit with a lens. Decrease, leading to an increase in manufacturing cost. Particularly in a single-function lens-fitted film unit that is important to provide at low cost, such an increase in cost is a very serious problem.

The present invention has been made in order to solve such a problem, and a finder for a lens-equipped film unit dedicated to high-definition printing and a finder unit for a lens-equipped film unit dedicated to L printing are made common. An object is to provide a low-cost film unit with a lens having a simple structure.

[0011]

In order to achieve the above object, the lens-fitted photo film unit of the present invention corresponds to each frame position of the photo film to be photographed and has an aspect ratio of 1.75 to 1.76, which is smaller than the aperture. In addition to providing print mode information that indicates printing in the high-definition print range, the aspect ratio of this viewfinder is 1.60 to 1.65, and the viewfinder field ratio in the vertical direction of the high-definition print range is 77 to 86%. is there.

According to a second aspect of the invention, the aspect ratio is 1.42 to 1.43, which corresponds to each frame position of the photographic film to be photographed.
In addition to providing print mode information that indicates printing in an L print range that is smaller than the aperture,
This finder has an aspect ratio of 1.60 to 1.65 and a viewfinder field ratio of 77 to 86% in the vertical direction of the L print range.

[0013]

FIG. 2 is an exploded perspective view of a lens-fitted photo film unit of the present invention. FIG. 3 is similar to FIG.
FIG. 3 is an external perspective view of a photographic film cartridge mounted on the lens-equipped film unit of FIG. The unit main body 2 of the lens-fitted film unit of the present invention is composed of a main body portion 3, a photographing mechanism 4 attached to the front surface of the main body portion 3, and a front cover 6 and a rear cover 7 that cover these from the front and rear, The unexposed photo film cartridge 1 is stored inside.

The photographing mechanism 4 includes a well-known shutter device 8,
A photographing lens 9, a number-of-photographs display plate 12, and a common finder 11, which will be described later in detail, are provided. Front cover-6
On the front of the camera, there are these shooting lenses 9 and a common viewfinder 11.
An opening for exposing the above is provided.

On the upper surface of the front cover 6, a release button 14 for operating the shutter device 8 is integrally provided, and a shot number display window 15 for exposing a part of the shot number display plate 12 is provided. .

An aperture 17 for defining the exposure range on the photographic film is provided at the center of the main body 3, and its size is 16.7 × 30.2 mm. On both sides of the aperture 17, a patrone chamber 18 and a film roll chamber 19 are formed. Then, in the patrone chamber 18 and the film roll chamber 19, a photo film patrone 1 and a photo film roll 32, which is a roll of the photo film 31 drawn from the photo film patrone, are light-tight. It is stored. Furthermore, in the upper part of the Patrone chamber 18,
A winding knob 21 is provided for rotating the spool of the photo film patrone to wind the photo film.

The photographic film cartridge 1 loaded in the unit main body 2 is composed of a cartridge main body 33 and a photographic film 31. A spool 34 is rotatably attached to the inside of the cartridge main body 33, and a photographic film 31 is wound around the spool 34. This photo film patrone 1
By rotating the spool 34,
Photo film 31 from the film entrance / exit 36 with
In the lens-fitted film unit, the film roll 32 housed in the film roll chamber 19 is wound into the patrone chamber 18 by rotating the winding knob 21.

On the photographic film 31, two perforations 37 are formed for each frame. Also,
A print mode recording area 38 is set on the side opposite to the perforation 37, and dots for designating a print size are optically recorded as a latent image in the print mode recording area 38. For example, no dots are recorded in the high-definition print mode, and two dots are recorded in the L print mode. Incidentally, such a photographic film cartridge is disclosed in, for example, JP-A-6-3.
This is described in detail in Japanese Patent No. 01157 and the like.

The common finder 11 for the lens-fitted photo film unit of the present invention includes a lens-fitted photo film unit for high-definition prints, which produces a print photograph of length 89mm, width 158mm, and an L print, which produces print photographs of length 89mm, width 127mm. It can be used for both film units with lenses.

Therefore, as shown in FIG. 1, the aspect ratio of the common finder 11 is set in the range of 1.60 to 1.65 between the aspect ratio 1.77 of the high-definition print and the aspect ratio 1.43 of the L print. Furthermore, even if this common finder 11 is used in a film unit with a lens for both high-definition printing and L-printing, the view-finder field ratio of the finder will not exceed 100% when high-definition printing or L-printing is performed. The viewfinder field ratio in the vertical direction of the print range set on the photographic film is 82%.
As a result, the viewfinder field ratio in the horizontal direction of the print range is 76% for high-definition print and 93% for L-print.

When shooting is performed using the lens-fitted film unit of the present invention, 16.7 × 30.2 mm on the photographic film for both high-definition printing and L-printing.
The shooting frame of is recorded. However, no dots are recorded in the print mode recording area 38 of the photo film 31 that is built in the lens-fitted film unit for high-definition printing in advance. Therefore, by confirming that there are no dots in the print mode recording area 38 after the film development, it is understood that printing should be performed in the high-definition print mode. When printing in high-definition print mode, the print processing is performed for the high-definition print range with an aspect ratio of 1.75 to 1.76, which is smaller than the exposure range of 16.7 x 30.2 mm on the photo film.

On the other hand, in the print mode recording area 38 of the photographic film 31 built in the lens-fitted film unit dedicated to L printing, two dots representing that printing is performed in the L print mode are previously recorded as latent images. Therefore, it is possible to identify that printing should be performed in the L print mode by confirming the dots that have become apparent by the film development. 16.7 x in L print mode
Smaller than the exposure range of 30.2 mm
Print processing is performed for the L print range set to 1.42 to 1.43.

Since the viewfinder field ratio of the common finder 11 in the vertical direction of the print range is set to 82%, the viewfinder field ratio in the horizontal direction of the print range is 76% for high-definition print and 93% for L print. As shown in FIG. 4, if both the high-definition print and the L print are photographed in the field of view of the common viewfinder 11, the print photograph appears extremely wider than the field of view of the viewfinder, or the field of view of the viewfinder. The subject will not be cut off on the way, or will not be outside the exposure range at all.

[0024]

[Examples] Table 1 below shows the negative size on the corresponding photographic film and the print field ratio in L print and high-definition print when the field ratio in the vertical direction of the finder is changed and the aspect ratio is set to 1.6 and 1.65. ~ Shown in Table 4.

[0025]

[Table 1] * Print field of view L: L size H: High vision * Negative size unit: mm, Print field of view unit:%

[0026]

[Table 2] * Print field of view L: L size H: High vision * Negative size unit: mm, Print field of view unit:%

[0027]

[Table 3] * Print field of view L: L size H: High vision * Negative size unit: mm, Print field of view unit:%

[0028]

[Table 4] * Print field of view L: L size H: High vision * Negative size unit: mm, Print field of view unit:%

As described above, by using the common finder 11 which is commonly used for high-definition print and L-print, the same finder is used for the dedicated film unit with lens for high-definition print and L-print. Can be used, and the manufacturing cost of the lens-fitted film unit can be greatly reduced.

In the reverse Galileo finder, the finder field of view may vary depending on the position of the eye point, and even in that case, the field of view is 10 at maximum.
Must be 0% or less. Therefore, Tables 1 to 1 above
Among the print field ratios shown in 4, the viewfinder vertical field ratio corresponding to a value close to 100% is 1 depending on the position of the eye point in the reverse Galileo viewfinder.
Since there is a possibility that it will exceed 00%, the upper limit of the viewfinder vertical field of view is set lower.

[0031]

As described above in detail, according to the film unit with a lens of the present invention, the aspect ratio is 1.75-
In 1.76, the print mode information that indicates printing in the high-definition print range smaller than the aperture is provided, and the aspect ratio of the viewfinder is 1.60 to 1.65.
And a print showing that the viewfinder field ratio in the vertical direction of the high-definition print range is set to 77 to 86%, or that the print is performed in the L print range having an aspect ratio of 1.42 to 1.43 and a size smaller than the aperture. Along with mode information, the finder aspect ratio was set to 1.60 to 1.65, and the finder field ratio in the vertical direction of the L print range was set to 77 to 86%. By sharing the finder of the dedicated lens-fitted film unit, it is possible to provide a low-cost lens-fitted film unit with a simple configuration.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a film unit with a lens according to the present invention.

FIG. 2 is an external perspective view of a photographic film cartridge mounted on the lens-fitted film unit of FIG.

FIG. 3 is an explanatory diagram showing a field ratio and the like for each print mode of the finder.

FIG. 4 is an explanatory diagram showing a visual field range for each print mode of the finder.

[Explanation of symbols]

 1 Photo film Patrone 11 Common finder

Claims (2)

[Claims] 1. A film unit with a lens, in which a photographic film is built in advance in a unit main body provided with a viewfinder and a shutter mechanism, and a picture is taken through an aperture of about 16.7 × 30.2 mm formed in the unit main body. Corresponding to each frame position of the film to be shot, the print mode information indicating that the aspect ratio is 1.75 to 1.76 and printing in a high-definition print range smaller than the aperture is provided, and the aspect ratio of the viewfinder is 1.60 to 1.65. The lens-fitted film unit is characterized in that the finder field ratio in the vertical direction of the high-definition print range is set to 77 to 86%. 2. A film unit with a lens, in which a photographic film is previously built in a unit main body provided with a viewfinder and a shutter mechanism, and a photograph is taken through an aperture of about 16.7 × 30.2 mm formed in the unit main body. The print mode information indicating that the image is printed in the L print range smaller than the aperture and having the aspect ratio of 1.42 to 1.43 is provided corresponding to each film shooting frame position, and the viewfinder aspect ratio is set to 1.60 to 1.65. And a finder field ratio of 77 to 86% in the vertical direction of the L print range.