JP2002099034A - Film unit with lens and method of producing print - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make telephotographing performable with ease and at a low cost while keeping the portability and the production cost of a film unit with lens of optical Z-axis type. SOLUTION: The film unit with lens of optical Z-axis type 1 has a display being on a sheath label 3 and showing that the telephotographing is carried out with a focal length equivalent to two times of that of an imaging lens 4. A finder 5 has a viewing range in accordance with two times of the focal length of the imaging lens 4; i.e., the viewing range is approximately one forth of that of the imaging lens 4. In the case that a photographic print is produced from a photographic film photographed by the film unit with lens 1, a print lens for panoramic viewing and a paper mask for a large size are used, and the photographic print with qualities equivalent to the telephotograph is produced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens and a method for producing a print photograph from a photographic film photographed by the film unit with a lens.

[0002]

2. Description of the Related Art At present, there are a great number of types of cameras for photographing, depending on applications and functions. Among them, a film unit with a lens is manufactured and sold by the present applicant so that photographing can be easily enjoyed. The film unit with a lens has an advantage that it can be provided at a low price, and has a very simple configuration because it needs to be manufactured at the lowest possible cost. For example, the photographing lens is positioned and held on a lens holder having an aperture stop having a constant diameter, and is focused so that standard photographing can be performed in more photographing opportunities.

On the other hand, standard, panoramic,
A film unit with a lens in which a print aspect ratio such as wide (hereinafter, referred to as PAR) can be selected has been put on the market. This film unit with a lens prints an identification mark representing a PAR outside the exposure range of a photographic film at the time of shooting, and a PAR corresponding to the identification mark at the time of printing.
Create a print photo with.

A conventional film unit with a lens uses a wide-angle lens having a focal length of about 32 mm, so that a person is photographed in a small size in portrait photography or the like. Therefore, when an enlarged print of a person image is required, it is necessary to bring a print photograph and a negative film to a development agency, write an enlargement area on the print photograph, and request an enlarged print. The developing laboratory receiving the request changes the magnification of the print lens while looking at the print photograph in which the enlarged area is written, and creates an enlarged print.

[0005] Requesting and creating an enlarged print as described above is troublesome and extremely expensive, and has not been used unless there is a special purpose. A film unit with a lens with a longer focal length by bending the photographing optical axis into a Z-shape has been put on the market so that a printed photograph of a large human image can be obtained without taking such a troublesome procedure. I have. Also, in the invention described in Japanese Patent Application Laid-Open No. 11-271872, there is proposed a film unit with a lens and a print making method that can specify a trimming range at the time of printing by applying the identification mark and perform pseudo telephoto shooting. are doing.

[0006]

However, when performing super-telephoto shooting in sports games or the like, even if a film unit with a lens having a Z-shaped shooting optical axis is used, the subject is small and is not sufficient. Therefore, if the focal length of the lens is increased in order to capture a large image of the subject, the lens portion becomes larger than the main body portion, so that the portability is significantly deteriorated. Furthermore,
The holding property at the time of photographing is also deteriorated, which causes a problem that camera shake occurs and a good printed photograph cannot be obtained.

According to the present invention, the photographing lens has a focal length of 70 m.
While maintaining the portability and manufacturing cost of a Z-optical axis type film unit with a lens of about
An object of the present invention is to enable super-telephoto shooting of 40 mm to 240 mm.

[0008]

In order to achieve the above object, a film unit with a lens according to the present invention has a field of view equivalent to 1.5 to 2 times the focal length of a taking lens. It has a finder, and the focal length of the photographic lens is 1.5 to
It is characterized in that a display indicating that telephoto shooting is to be performed at a focal length equivalent to twice, that is, super telephoto shooting or 240 mm telephoto shooting is to be performed. The finder has a magnification of 1.5 to 2 times that of a standard finder used at the focal length of the taking lens. The optical system has a focal length of 70 mm to 12 mm.
It is characterized by being a 0 mm Z optical axis optical system.

Here, the focal length of the lens actually mounted on the film unit with the lens is set to 70 mm to 120 mm.
The reason was set for the following reasons. First, the Z optical axis optical system cannot be set to a very short focal length due to structural restrictions. The limit is considered to be about 65 mm. Further, as described above, if the focal length of the lens is too long, the lens portion becomes larger than the main body portion, so that the portability is remarkably deteriorated and the holding property at the time of photographing deteriorates. This and the further increase in the focal length cause the camera shake to occur more easily, which causes a problem that the printed photograph becomes blurred and has a poor appearance. The limit at which these problems can be tolerated is about 120 mm.

[0010] Further, according to a third aspect of the present invention, there is provided a print creating method.
For example, when a photographic print is taken from a photographic film taken by the above-mentioned standard type of film unit with a lens, a standard size paper mask and a stretching lens for panoramic printing are used.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a lens-fitted film unit (hereinafter referred to as a film unit) embodying the present invention.
1 shows the appearance. This film unit 1 incorporates various photographing mechanisms and is a commercially available 1
It comprises a unit main body 2 in which a 35-size photographic film is loaded in advance, and an exterior label 3 partially covering the unit main body 2.

A photographing lens 4 and an object side window 6 of a finder 5 are provided on the front surface of the film unit 1, a shutter button 10 and a counter window 11 for displaying the number of remaining photographable frames are provided on the top surface, and 1 is provided on the back surface. A winding knob 14 that is rotated each time a frame is shot is exposed, and an eyepiece-side window (not shown) of the finder 5 is provided at a position facing the object-side window 6.

The exterior label 3 has its back surface coated with an adhesive and attached to the unit main body 2, and has an opening provided in each section through a taking lens 4, a finder 5, and a counter window 11.
Etc. are exposed to the outside. Also, film unit 1
The packaging bag 16 for hermetically packaging is made of a resin sheet having an inner surface coated with aluminum. On the outer label 3 and the packaging bag 16, indications 15 and 16a indicating that the film unit 1 is dedicated to super telephoto shooting are written.

As shown in FIG. 2, the unit main body 2 comprises a main body base 21 on which the photographic film 18 is loaded, an exposure unit 22 mounted on the front surface of the main body base 21, and
It comprises a front cover 24 and a rear cover 26 that are assembled so as to cover the front side and the back side of the main body base 21.

The main body base 21 has a patrone storage chamber 21a for storing the patrone 17, and a patrone 17
And a film roll storage chamber 21b for storing the unexposed photographic film 18 pulled out from the film roll in the form of a film roll. At the center of the main body 21, there is provided an aperture 21 c for regulating the light from the photographing lens 4 and exposing the subject image within the exposure range 18 a of the photographic film 18.

The exposure unit 22 assembled on the front surface of the main body 21 is a unit formed by assembling a shutter mechanism including shutter blades 30 (FIG. 3), a film winding preventing mechanism, and a finder 5 with a base 22a. The finder 5 is an optical finder including an objective lens and an eyepiece. The taking lens 4 is held by a lens holder 27 on the front surface of the base 22a.

As shown in FIG. 3, the present film unit 1
Reflecting mirrors 28 and 29 are used inside the exposure unit 22. The subject light incident on the taking lens 4 is incident on the inside of the exposure unit 21 when the shutter blade 30 opens the opening 31. Reference numeral 32 in FIG. 3 denotes a stop and a light shielding plate for restricting the optical path of off-axis rays. Then, the subject light that has entered the reflecting mirror 28 is reflected toward the reflecting mirror 29, and the reflecting mirror 29 reflects toward the photographic film 18. As a result, the photographic film 18 is exposed. Incidentally, it is of course possible to use a prism instead of the reflecting mirror.

Further, the telephoto photography can be made compact by the above-mentioned Z optical axis system. The photographing lens 4 has a focal length of about 100 mm. In the present invention, a double telephoto print photograph having a size equivalent to that obtained by performing telephoto photographing with a photographic lens having a focal length of 200 mm twice as large as the focal length of the photographic lens 4 of 100 mm is created by a printing apparatus. You. The viewfinder 5 has a magnification twice as large as the viewfinder of the conventional film unit, that is, a field of view that is approximately one-fourth, so that a standard field of view corresponding to a photographing lens having a focal length of 200 mm is obtained. The center of the view range of the viewfinder 5 is set at the same position as the center of the standard view range.

When printing a photo film loaded in the lens-fitted photo film unit, an error may occur in the conveyance of the photo film, and the printing range may be shifted. Therefore, in general, the view range of the finder is set to be narrower than the print range. In this embodiment, the view range of the finder 5 is set to be about 80% of the print range. Therefore, the field of view of the finder 5 is about 1.5 times the standard field of view corresponding to a photographic lens with a focal length of 100 mm.

As shown in FIGS. 2 and 3, an aperture 21c for regulating light from the photographing lens 4 is formed at the center of the main body 21. As shown in FIG. A subject image is exposed in an exposure range 18a on a 135-size photographic film 18 defined in advance to a predetermined size, and a film feed perforation 35 is provided at both end edges.

The rear cover 26 is attached to the back side of the main body base 21 to cover the inside of the main body base 21 in a light-tight manner. Further, below the rear cover 26, bottom lids 26a, 26 covering the lower surfaces of the patrone storage chamber 21a and the film roll storage chamber 21b are provided.
b is provided. The bottoms of the patrone storage chamber 21a and the film roll storage chamber 21b are open, and are closed by pull-top type bottom lids 26a and 26b provided on the rear cover 26 after the patrone 17 is loaded. The bottom cover 26a serves as a take-out cover for taking out the patrone 17 containing the photographed photo film 18 from the patrone storage room 21a after the use of the film unit 1.

At both ends in the width direction of the photo film 18,
Perforation 35 for film feeding at a constant pitch
Is provided. A bar code 36 representing the type of the photographic film, the frame number, and the like has been conventionally printed on the outside of the perforation 35, and the bar code 36 becomes apparent when the film is developed. Since the photographic film 18 is loaded in advance when the film unit is manufactured, the photographic film 1 used by loading the film unit is used.
In the case of No. 8, information indicating that fact is
Can be included. Therefore, even after taking out the photographic film 18 from the film unit where photographing has been completed, if the bar code 36 is confirmed after the development of the film, the photographic film 18 is used in the film unit shown in FIG. Can be identified.

FIG. 5 is a schematic view showing a photographic printing apparatus 41 according to the present invention, in which the photographic film 18 of the film unit 1 is printed. The photo print device 41 includes:
As is well known, a film carrier 42 is arranged.
The film carrier 42 includes a carrier base 52, a base cover 53, and a film mask 51. In the film carrier 42, the photographic film 18 is transported between the carrier base 52 and the base cover 53 in the longitudinal direction of the film, and the photographed image (negative) recorded on the photographic film 18 is positioned on the print optical axis 43.

Below the film carrier 42, a light source 44, a light quality adjusting section 45, and a light diffusion box 46 are arranged in order from the bottom along the print optical axis 43. The light quality adjusting unit 45 adjusts the light quality of the print light by adjusting the amount of yellow, magenta, and cyan color filters inserted into the print optical axis 14.

Above the film carrier 42, a print lens 47,
Shutter 48 for adjusting the amount of print light, paper mask 49 for defining the trimming range, and print paper 5
0 is arranged. The print lens 47 includes the light source 42
The photographed image of the photographic film 18 illuminated by the above is formed on the photosensitive emulsion surface of the print paper 50. Note that the photo printing device 41 is provided with a switching mechanism 62 that automatically switches between the print lens 47 and the paper mask 49 according to the print size and print shape.

On the base cover 53, the photographic film 18 is provided.
A sensor 54 for reading the bar code 36 is provided. The data of the barcode 36 read by the sensor 54 is transmitted to a control unit 61 that controls each unit of the photo printing device 41.
Is input to The control unit 61 controls the input barcode 3
Print lens 47 used in accordance with the data represented by 6
And the paper mask 49 are selected, and the switching mechanism 62 is operated to set the print lens 47 and the paper mask 49 at predetermined positions.

As shown in FIG. 6, a range surrounded by a two-dot chain line 18c is a trimming range printed on the print paper 50 when the standard L-size print lens 47 is used. A range surrounded by a two-dot chain line 18d is a trimming range printed when the standard panoramic size print lens 47 is used. Since the print lenses 47 for the L size and the panorama size are 3.96 times and 7.91 times the negative, respectively, in the standard L size print, the range surrounded by the two-dot chain line 18c is For standard panoramic size prints, 2
The range surrounded by the chain line 18d is shown in FIG.
The print is performed as shown in FIG.

An L-size paper mask 49 and a panorama-size print lens 47 are used to print a photographic film photographed by the film unit of this embodiment. The print lenses for the L size and the panorama size are 3.96 times and 7.91 times the negative, respectively. Since the print lens for the panorama size has approximately twice the magnification of the print lens for the L size, the use of the print lens for the panorama size allows about twice as large an enlarged print. Then, since the L size paper mask 49 is used, the trimming range surrounded by the two-dot chain line 18b is printed on the print paper 50 in the L size as shown in FIG. 6C. 2
The center of the trimming range surrounded by the chain line 18b is the same as the center of the exposure range 18a, and the trimming range has a similar shape to the exposure range 18a.

Next, the operation of the above configuration will be described. In the production line of film units, photo film 1
8 is pulled out from the patrone 17, wound into a roll, and loaded into the main body base 21. The photo film 18 is side-printed with a bar code 36 indicating that the photo film 18 is to be used by being loaded into the film unit in advance at the time of manufacture.

After the photographic film 18 and the patrone 17 have been loaded, the outer cover 3 is attached to the outer peripheral surface of the completed unit main body 2 with the rear cover 26 attached thereto, and the unit body 2 is hermetically packaged in the packaging bag 16. On the outer label 3 and the packaging bag 16, as can be seen, a print photograph obtained when photographed by the film unit 1 is equivalent to that obtained by photographing with a photographic lens equivalent to 200 mm. Since the indications 15 and 16a of "super telephoto" are described, they are not mistaken for normal telephoto shooting at the time of purchase or use. In order to understand that a print photograph equivalent to 200 mm can be obtained, "200 mm telephoto" is displayed as the indications 15 and 16a, and the focal length is 3 mm.
For a standard print photograph obtained from a film unit with a lens using a lens of about 0 mm, a print photograph having a focal length ratio of about 6 times is obtained.
A display such as "double telephoto" may be used.

The photographer who has purchased the film unit first takes out the film unit 1 from the packaging bag 16 and rotates the winding knob 14. The photo film 18 is wound up by one frame, a shutter charge is performed, and the photographing preparation is completed. The photographer looks into the viewfinder 5 and performs framing. Since the finder 5 has a magnification twice as large as the field of view corresponding to the focal length of the photographing lens 4, the subject is displayed enlarged.

When the shutter button 10 is depressed, the shutter mechanism is actuated, and the shutter blade 30 opens and closes the opening 31 to perform photographing. While the opening 31 is open, the light transmitted through the photographing lens 4 enters the reflecting mirror 28 via the opening 31 and the light shielding plate 32. And the light is reflected by the mirror 2
By using 8, 29, it is bent into a Z-shape and reaches the emulsion surface of the photographic film 18 through the aperture 21c. This film unit 1 has a focal length of 100 m.
Since the m taking lens 4 is used, the subject image is exposed in the exposure range 18a shown in FIG. The periphery of the bar code 36 is not exposed. Then, in order to perform the next photographing, the photographer again rotates the winding knob 14 to set the photographic film 18 at a predetermined position.

Open the bottom cover 26a of the film unit 1 and take out the patrone 17 from the patrone storage chamber 21a. The exposed photographic film 18 is taken out of the cartridge 17 taken out, set in a developing device, and developed.

The developed photographic film 18 is set on a film carrier 42 of a photographic printing device 41.
When the photo print device 41 is activated, the photo film 1
8 is transported in frame units. Each frame is set at a predetermined position, and the sensor 54 reads the barcode 36. The barcode 36 contains the photo film 1 as described above.
The identification information is input to the photographic printing device 41. The identification information includes information indicating that the image 8 has been photographed by being loaded into the above-described film unit. This identification information is used as information for performing a printing process with a print lens for panoramic printing while using a standard L-size paper mask in photo printing.

The control section 61 drives the switching mechanism 62 to switch the print lens 47 to a panorama size lens. The magnification of the print lens 47 with respect to the negative is 3.96 times for the L size and 7.60 times for the panorama size.
The size is 91 times, and the print lens 47 for the panorama size is approximately twice as large as that for the L size. The L size paper mask is selected, and the trimming range surrounded by the two-dot chain line 18b is the print target range. Then, the light source 44 emits light and prints on the print paper 50. Thereby, the trimming range surrounded by the two-dot chain line 18b shown in FIG. 4 is printed on the print paper 50 in L size.

After the printing is completed, the print paper 50 and the photographic film are conveyed by one frame. Since the barcode 36 attached to each frame contains the above-described identification information, each bar has a two-dot chain line 18 shown in FIG.
The image within the trimming range surrounded by b is enlarged and printed twice on the L-size print paper 50. When the film is to be printed with a long length, such as in the case of simultaneous printing, after the identification information is read from the barcode 36 of the first frame, the confirmation of the identification information for each frame can be omitted. .

In this way, the number of parts of the film unit is reduced and the structure is simplified, so that the film unit can be manufactured at a low cost, and the method of producing the print does not require complicated work, and the work efficiency is improved.

In the printing method used in the above embodiment, the magnification of the print lens with respect to the negative is set to, for example, 3.96 times the L size and 7.91 times the panorama size. Although the print was enlarged twice, there is no problem even if the print lens magnification of the panorama size is slightly different, such as 7.95.

Further, in this embodiment, the printing is performed by enlarging about twice as large as the L size print. However, the printing is performed by enlarging about 1.5 times as compared with the L size print. No problem. However, an HV size print lens may be used in addition to the L size and panorama size print lenses. However, the magnification of the print lens with respect to the negative is 4.77 times, which is approximately 1.77 times that of the L size print lens. Since it is twice as large, it can be enlarged and printed only at 1.2 times the L size. For this reason, using an HV size print lens for the L size print paper has no significant effect, and it is more preferable to use a panorama size print lens for the L size print paper.

In the above embodiment, a film unit using a 135 size photographic film has been described as an example. However, the present invention can be applied to a film unit using a IX 240 size photographic film. IX240
When a photo film of a size is used, the above-described identification information may be recorded by extending the PAR bit indicating the print aspect ratio.

Like a printer corresponding to a 135-size photographic film, a printer corresponding to an IX240-size photographic film also uses a print paper having a width of 89 mm and a width of 102 mm. Is 5.7 times, the print lens for panorama size is 9.3 times, and 102
In the case of mm width, the print lens for C size is 6.5
Since the print lens for 2x and panoramic size is 10.6x, both 89mm width and 102mm width are about 1.6.
It is possible to print three times larger. That is, the focal length 74
In the case of a film unit provided with a photographic lens of 1 mm, telephoto photography with a focal length of 120 mm, which is 1.63 times that of the film unit, is possible.

In the above embodiment, the bar code 36 is used as the identification mark indicating the identification information. However, a round mark may be specially provided. Further, instead of before the film unit is loaded, the identification mark may be imprinted every time one frame is shot by providing a notch or the like in the aperture, or providing a mark imprinting mechanism. That is, the shape of the identification mark and the method of imprinting may be any as long as the photographic printing apparatus can identify it.

Further, in the above embodiment, the identification information is transmitted by the identification mark provided on the photo film. However, the print lens 47 and the paper mask 49 can be selected even in the display indicating the super telephoto printed on the outer label. Therefore, the identification mark can be omitted. Also, when the film unit is handed over to the development agency and requested for simultaneous printing, it can be instructed by verbally telling that it is super telephoto printing or by filling in an application form. Further, even in a phenomenon where the film is handled only by the patrone, it may be stated on the outer peripheral surface of the patrone that the photograph was taken with the double telephoto film unit, or a sticker on which the fact was printed may be attached. Further, the identification may be performed by using a part of a barcode conventionally provided in the patrone.

In the photographic printing apparatus, the identification mark is detected to automatically switch between the print lens and the paper mask. However, the operator may manually switch between the print lens and the paper mask.
Even a slightly older photographic printing device can easily create a 2x telephoto print.

[0045]

As described above, according to the film unit with the lens and the print making method of the present invention, Z
A telephoto print can be obtained easily and inexpensively without troublesome requesting an enlarged print while maintaining portability and manufacturing cost of a film unit with a lens having a character-shaped photographing optical axis.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a film unit with a lens embodying the present invention.

FIG. 2 is an exploded perspective view of a unit main body.

FIG. 3 is a sectional view of a film unit with a lens.

FIG. 4 is an explanatory diagram of a photographic film.

FIG. 5 is an explanatory diagram of a photographic printing device.

FIG. 6 is an explanatory diagram of a photographic film.

FIG. 7 is an explanatory diagram of a print paper.

[Explanation of symbols]

 4 Photographing lens 18 Photo film 28, 29 Reflector 36 Barcode 47 Print lens 49 Paper mask 54 Sensor

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03C 3/00 572 G03C 3/00 572Z 599 599D

Claims (3)

[Claims] 1. An optical system in which at least two reflecting mirrors are arranged in the optical path of a photographic lens and the photographic optical path is bent, and a cartridge in which a photographic film and a photographic film that has been photographed are rolled in at the time of manufacture is loaded. The lens-fitted film unit further includes a finder having a visual field range equivalent to 1.5 to 2 times the focal length of the photographing lens, and the lens unit has a lens unit. A film unit with a lens, wherein a display indicating that telephoto shooting is performed at a focal length corresponding to 1.5 to 2 times is performed. 2. The optical system according to claim 1, wherein said optical system has a focal length of 70 mm to 120 mm.
The lens-fitted film unit according to claim 1, wherein the Z-axis optical system is a mm optical system. 3. A print producing method characterized in that a standard size paper mask and an enlargement lens for panoramic printing are used when a photographic print is taken from a photographic film taken by a film unit with a lens.