JPH07114149A - Film unit with lens - Google Patents

Abstract

PURPOSE:To restrain cost from rising and a camera from getting large by the simplification of the mechanism of a camera and the utilization of space, to make the camera compact, especially, by drastically reducing the entire height of the camera, to improve the quality of photographed image by light shielding in the aperture of a camera main body and the prevention of internal reflection and further to improve the assembling workability of the camera. CONSTITUTION:In this film unit with a lens in which a roll photographic film F is previously loaded and constituted of a film winding mechanism, a lens shutter unit LS, a finder part and a unit main body 10; a light shielding frame member 19 is allowed to intervene between the attaching part 10M of the unit main body 10 to which a lens shutter unit LS is attached and the lens shutter unit LS. Then, an internal reflection preventing wall part 10P is formed in a dark box part formed between the image-formation surface part 16 of the unit main body 10 and the lens shutter unit LS, and formed as a curved surface nearly coincident with the curvature of an electric member C housed in the unit main body 10.

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 (film-integrated type) having an exposure function for filming and a film winding function and capable of immediately taking a picture of an unexposed film loaded in advance. Camera).

[0002]

2. Description of the Related Art A film unit with a lens is a so-called film-integrated camera having a function of photographing, which is also called a "shooting-only camera". Since it is used only for film shooting and the camera body is discarded after taking out the exposed film, it is manufactured at a low cost with a simple structure.

The above-mentioned film with lens is purchased and used when it is desired to take a photograph when the camera is not carried, and it is widely sold in film stores and the like.

In addition, although cameras are often purchased and used on the go, such as during travel, it is difficult to say that they are convenient to carry, and in general, they are equipped with a photographing lens of f = 35 mm and have an outer shape of 110 mm.
It was about mm x 60 mm x 35 mm, and it was inconvenient because it could not fit in the chest pocket of the shirt.

[0005]

However, even though it is said to be a "shooting-only camera", the camera function has been enhanced as in the case of a film unit with a lens having a built-in stroboscopic light emitting device due to the recent diversification of shooting purposes. There is a tendency that the cost is rising and the camera size is increasing.

Further, from the idea of reusing resources, it has been demanded that the "shooting-only camera" be a reusable camera, that is, a reuse camera.

As a result of solving these problems and improving the present invention, as a result of simplifying the mechanism of the camera, speeding up the assembling work, and utilizing the space, it is possible to suppress an increase in cost and an increase in size of the camera. An object of the present invention is to provide a thin film unit with a lens, which can be reused only by exchanging members and which facilitates a film loading operation.

[0008]

The above object is to provide a film unit with a lens, which is preloaded with a roll-shaped photographic film, and which comprises a film winding mechanism, a lens shutter unit, a finder section, and a unit body. The present invention is achieved by a lens-equipped film unit characterized in that a light-shielding frame member is interposed between the mounting portion for mounting the shutter unit and the lens shutter unit.

Further, the above object is to provide an inner surface antireflection wall portion in a dark box portion formed between the image forming surface portion of the unit main body and the lens shutter unit, and to form the inner surface antireflection wall portion in the unit main body. This is achieved by a film unit with a lens, which has a curved surface shape that substantially matches the curvature of an electric component housed inside.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an external view of a lens-equipped film unit (hereinafter also referred to as the present camera) of the present invention. This camera is provided with a 35 mm film (J135) pre-loaded, and after the completion of shooting. Without rewinding, the film is stored in the camera and sent to a developing station for film development and printing.

The unexposed film used in this camera is loaded in a cartridge, and after the camera is kept in a light-tight state, the winding shaft on the film winding chamber side is driven to drive the film inside the cartridge. Wind all the film into the film winding room.
The user rolls up the film that has already been photographed into the cartridge by winding it up each time the photograph is taken. Therefore, in the photo lab, the photographed film can be taken out from the camera in the bright room without changing the cartridge.

The taken film can be easily taken out by bending a part of the back cover. Therefore, the camera member is checked, a new unexposed film is loaded, and the back cover is attached by the manufacturer. If replaced, it can be reused, that is, used as a reuse camera.

As the cartridge loaded in this camera, a cartridge having an outer diameter of φ20.6 mm, which is different from the cartridge (JISK7528) which is generally used, is used.

As a result, the total thickness of the camera can be suppressed to about 24 mm except for the lens barrel portion having the taking lens, and an ultra-thin compact camera is realized.

The present camera is provided with a cardboard carton on which a product name, a simple method of use, etc. are displayed on a part of its outer surface.

FIG. 2 is a development view showing the structure of the camera.

Reference numerals 10, 20 and 30 denote a camera body, a front cover and a back lid, which are main components of the camera, respectively, and 40 denotes a built-in strobe unit, and 50 and 50.
Reference numerals 60 and 70 respectively denote a film winding mechanism, a sector charge mechanism and a film counter mechanism.

When the camera body 10 is used alone, each member constituting the film winding mechanism 50, the sector charge mechanism 60, and the film counter mechanism 70 is mounted, and the shutter case 11 for housing the sector is mounted.

The shutter case 11 is fixed by engaging the claws 11A protruding on both sides with the engaging portion 10A on the front surface of the camera body 10, and the sector is linked to the sector charge mechanism 60.

Further, on the front surface of the shutter case 11, there is provided a slit 13A which is a single lens having a focal length f = 30 mm and a photographing lens 12 having an aperture of F9.5, which is engaged with the guide pin 11B. It is covered by the lens holder 13.

The camera body 10 and the shutter case 11 described above
Is made of a black matte plastic material having some elasticity, including the front cover 20 and the back cover 30 described above.

On the other hand, the strobe unit 40 is mounted and supported on the basis of holes 40A and 40B on the substrate which engage with the guide pins 10B and 10C on the front surface of the camera body 10, respectively.

The upper and lower battery sections 41 integrated with the strobe unit 40 are inserted into the upper and lower slit holes 10D of the camera body 10 and projected into the battery chamber on the back side of the camera body 10 to form an AA battery E as a strobe charging power source. To pinch.

The integrated capacitor C is stored in a capacitor chamber formed under the shutter case 11.

The lens retainer 13 and the strobe unit
The fixation and integration of 40 to the camera body 10 is completed by mounting the front cover 20 to the camera body 10.

Prior to mounting the front cover 20 on the camera body 10, an objective lens 21 of a finder is dropped in front of the front cover 20 and is fixed by engaging a decorative cover 22. The makeup cover 22 has a guide pin 22A and four nails 22B on the back surface.
The front cover 20 and the holes 20A and 4 on the front of the front cover 20, respectively.
It is attached by engaging with the locking portion 20B at the location.

The front cover 20 is further mounted on the front surface of the camera body 10 after the eyepiece 23 of the finder is engaged and mounted on the back surface.

The front cover 20 is provided with a hole 20C, a claw 20D, and three engaging portions 20E on the back surface, and the front cover 20 has a guide pin 10E on the front surface of the camera body 10, a nail 10F, and a side engaging portion 10G. It is attached by engaging.

By mounting the front cover 20 on the camera body 10, the lens holder 13 and the strobe unit 40 are fixed to the camera body 10.

The camera body 10 with the front cover 20 attached
In the cartridge chamber and the scroll chamber (both not shown) formed on the back surface of the cartridge, the cartridge P1 and the spool S2 with the leading end of the unexposed film F locked are respectively loaded.

The other end of the film F is locked to the spool S1 in the cartridge P1. Even if the film in the cartridge is once wound up by the spool S2 after the film is loaded, the other end is locked to the spool S1. Therefore, it can be rolled up in the cartridge P1 every time the photographing is completed.

A back cover 30 is attached to the back surface of the camera body 10 in which the film F is loaded so that the film F is protected from light and the focus surface position is restricted.

The back cover 30 is provided with claws 30A and 30B on the front surface thereof and locking holes 30C and 30D on the side surfaces thereof.
When attaching to the camera, the nails 30A and 30B are the locking parts of the camera body 10.
On the 10H and 10J, the holes 30C and 30D are the nails 10 of the camera body 10.
It is fixed by engaging K and 10L.

After mounting the back cover 30, a predetermined film winding operation is performed to set a screen capable of photographing, and the carton shown in FIG. 1 is mounted to complete the process.

Next, details of the film winding mechanism 50, the sector charge mechanism 60, and the film counter mechanism 70 will be described.

FIG. 3 is a perspective view of each of the above mechanical parts as seen from the back side of the camera, and FIG. 4 is a view of the cartridge P1 in which the film F is wound and the spool S2 from the side in which the camera body 10 is inserted. It is a perspective view.

In the camera body 10, a cartridge chamber 15 is provided as two accommodating chambers for film winding and film loading in the same plane on both sides with the screen frame 16 which is the exposure unit interposed therebetween.
A and a scroll chamber 15B are provided, and J135 caught in the cartridge P1 which is the storage container shown in FIG.
A film F is loaded.

The film F used in this camera of this embodiment is a roll film J135 or a slightly thin roll film having a thickness of 130 to 140 μm, which is the same as a general camera. The end portion is fixed to S1 and the film is wound up for a predetermined number of frames so that the film can be photographed, and a film having a certain length is taken out from the film outlet of the cartridge P1. The film F in this state will be loaded into this camera. The loading method will be described below.

The cartridge P1 is loaded in the cartridge chamber 15A so that the spool S1 of the cartridge P1 is engaged with the forked portion of the hoisting fork 52. On the other hand, the spool S2 is also inserted in the scroll chamber 15B. Then, in the present embodiment, the film F is pulled out until the tip of the film notch FN of the film F is aligned with the index 17A on the lower portion of the lower rail surface, and the tip of the film F is inserted into the slit SL of the spool S2 to form the film F. The perforation P is locked to the claw H. The film notch FN is designed to indicate the emulsion lot number of the film by means of several holes provided in the tongue portion at the tip of the film.

Next, the back cover 30 is covered and the cover is made light-tight.
Then, the main camera in this state is attached to a special tool which is a film winding device, and the entire film F (however, the other end does not separate from the spool S1 of the cartridge P1) is wound onto the spool S2 of the scroll chamber 15B and the film is wound. Will be loaded. That is, by loading the film F in this way, the film F is sequentially wound into the patrone P1 for each shooting, and after the shooting of a predetermined number of images is finished, in the present embodiment, two frames are fed in a blank. The film F, which has been photographed, is wound into the cartridge P1 while leaving the required length without the leading end of the film F being wound into the cartridge. Therefore, this cartridge can be taken out from this camera in a bright room.

Next, the mechanism of the main body will be described.

The camera body 10 includes a film winding mechanism 50 including a photographing lens 12 and a sector charge mechanism 60.
The main mechanism of the film counter mechanism 70 is incorporated therein.

First, the film winding mechanism and the sector charge mechanism will be described.

Reference numeral 51 is a film winding knob, and the film F loaded as described above is wound up by rotating the film winding knob 51 counterclockwise. A cam 55 coaxial with an eight-toothed sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the bottom.
Is designed to rotate exactly once counterclockwise by winding the film.

That is, the film is wound up with one per piece having a length of eight perforations, which is the number of teeth of the sprocket gear, and the piece size is a so-called full size piece size of 24 × 36 mm.

By the counterclockwise rotation of the cam 55, the fan-shaped cam portion 55B naturally rotates counterclockwise as described above, and in the process, the fan-shaped cam portion 55B moves the charge lever 61 and the charge lever shaft 63. Is rotated clockwise against the spring force of the charge lever spring 64 that urges the charge lever 61 in the counterclockwise direction, and the triangular ketobashi 61C provided on the charge lever 61 causes the rising portion 65B of the sector lever 65 to rise.
Is pressed, and the rising portion 65B is eventually overcome to charge the sector charge mechanism as shown in the figure.

Pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided in the sector lever 67, and the tensile force of the sector spring 67 causes the sector lever 65 to
The left end of the long hole is brought into contact with the pin 18B provided on the camera body 10 which guides the long hole of the slot slidably and rotatably, and the sector lever
Pin 18 provided on camera body 10 with arm plate 65D provided on 65
It comes in contact with E. Further, a sector drive pin 65A for operating the sector 66 pivotally supported by the sector pin 18D provided on the camera body 10 is inserted in the forked portion of the sector 66.

As will be described later, the cam stopper after the shooting is completed.
The projecting portion 62D of 62 is removed from the groove portion 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the drawing to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
The edge of the arm portion 61A is abutted against the end surface of the arm portion 61A by the spring force of the hoisting stopper spring 58 which is offset from each edge of the arm portion 62A and urges clockwise. When the cam 55 rotates exactly once as described above by the film winding and the groove 55A of the cam 55 returns to the initial position, the spring force that biases the cam stopper 62 in the clockwise direction by the horizontal end portion of the charge lever spring 64. As a result, the protrusion 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the lock of the arm portion 57A of the hoisting stopper 57, which was locked at the end surface of the arm portion 62A of the cam stopper 62 at this time, is released.

The outer peripheral cylindrical surface of the film winding knob 51 is a ratchet gear, and the V-shaped projection at the tip of the winding stopper 57 due to the disengagement of the lock is the ratchet by the spring force of the winding stopper spring 58. It jumps into the tooth space of the gear 51A and prevents the film winding knob 51 from rotating in the counterclockwise direction. That is, when the film winding is completed, the film winding knob 51 is prevented from further winding rotation.

Further, in the camera body 10, the tip of the reverse rotation preventing claw 53 utilizing the elasticity of the resin material is pressed against the ratchet gear 51A to prevent the film winding knob 51 from rotating in the opposite direction. It has become.

By pressing the release button 25 of the front cover 20, the release button pin 25A is planted on the back surface of the release button 25.
Operates in the direction of arrow A. That is, the front cover 20
When the is attached to the camera body 10, the hoist knob
51 By the operation of the tip of the release button pin 25 in the direction of arrow A described above, the hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58. Then, from the end surface of the arm portion 57A of the hoisting stopper 57, the arm portion 61 of the charge lever 61
The edge of A is disengaged, and the charge lever 61, and thus the cam stopper 62, is rotated counterclockwise by the spring force of the charge lever spring 64.

Then, the counterclockwise rotation of the charge lever 61 by the spring force of the charge lever spring 64, which is stronger than the sector spring 67, causes the ketobashi 61 of the charge lever 61 to rotate.
C hits the rising portion 65B of the sector lever 65 and then comes off the rising portion 65B. Therefore, the sector lever 65 rotates clockwise around the pin 18B in the long groove of the sector lever against the tensile force of the sector spring 67, and the sector spring 67
It returns to its original state due to the pulling force of. Therefore, sector drive pin 65A
Will rotate the sector 66 around the sector pin 18D to expose the film F and then close it.

On the other hand, the cam stopper 62 also rotates counterclockwise together with the charge lever 61 as described above,
The projecting portion 62D of 62 comes out of the groove portion 55A of the cam 55. Therefore, even if you stop pressing the release button, the winding stopper
The arm portion 57A of 57 is biased clockwise by the spring force of the hoisting stopper spring 58, but the arm portion 61A of the charge lever 61.
Is stopped by the end face of the
The shaped protrusion does not lock the ratchet gear 51A of the winding knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 meshes with the V groove 56A provided at the upper end of the cam shaft 56 planted in the cam 55 that rotates integrally with the sprocket gear 54, and one frame of film F is wound up to form a cam. It is an exponential gear that rotates clockwise by one tooth each time the shaft 56 rotates once.

An index plate 71 is printed on the upper surface of the index wheel gear 72 as an integrally molded product, and the number of remaining photographable films is displayed through the film counter window 26 on the upper surface of the front cover 20.

A projection 72A is provided on the lower surface of the index plate gear 72, and the projection 72A is formed by the next film winding after the photographing of a predetermined number of frames is completed.
It is designed to be inserted between the E and another protruding portion 62E of the cam stopper 62. Then, the projecting portion 72A is replaced by the two projecting portions 61.
By entering between E and 62E, the film F is wound up by one frame, and even if the cam 55 makes one rotation and the charging of the sector is completed, the both protrusions 61E and 62E are the protrusions 72A of the exponential gear 72. Therefore, the charge lever 61 cannot be operated, and the protruding portion 62D of the cam stopper 62 cannot jump into the groove portion 55A of the cam 55. The arm portion 57A of the hoisting stopper 57 contacts the end surface of the arm portion 62A of the cam stopper 62 by the spring force of the hoisting stopper spring 58, and the V-shaped projection at the tip of the hoisting stopper 57 locks the ratchet gear 51A. Also, it is impossible to operate the charge lever 61 to open and close the sector to expose the film.

In this way, in the present embodiment, when two frames of film are idle-fed, the index plate gear 72 rotates by two teeth, and this rotation causes the protrusion 72 of the index plate gear 72 to rotate.
A is the charge lever that holds down the protrusion 61E at all.
The movement of 61 is blocked, but another protrusion 62 of the cam stopper 62 is
It is designed to come off from E. Therefore, the protrusion 62D
Jumps into the groove 55A of the cam 55, the winding stopper 57 is disengaged and the winding knob 51 is locked by the winding stopper 57, and the film cannot be wound. Further, as described above, the movement of the charge lever 61 is blocked, so that the film cannot be exposed. In this way, the tongue at the leading edge of the film is prevented from being caught in the cartridge and the tongue of the required length is secured. Therefore, in order to make the camera compact, even if a cartridge having a small outer diameter is used, there is no problem in pulling out the film from the cartridge at the time of development.

The above-described lens-fitted film unit of the present invention allows the maker to extremely easily carry out film loading in a bright room, and the user can freely load the film from the viewpoint of quality assurance. It was designed so that it would not exist.

That is, the film unit with lens after photographing is gathered by the maker, and as described above, the film after photographing is bent on a part of the back cover, that is, the back cover is damaged, and the film having been photographed is caught. The Patrone will be taken out from the camera body. The film will be developed and printed at the photo lab. On the other hand, the camera from which the film was taken out will be checked from the manufacturer's side for camera function and performance to ensure quality assurance. After carrying out the above, in the same manner as in the case of the new camera in the bright room, the film reel is equipped with the patrone newly wrapped with the unexposed film and the new back cover is attached, as described above. It can be attached to a special tool and wound up on the spool in the scroll chamber for reuse, that is, it can be used as a reuse camera. In this way, the quality assurance of this camera is secured by the manufacturer.

Further, as described above, this camera is designed to wind the film on the spool in the scroll chamber and load the film with the dedicated device which is the film winding device.
Even if you use a cartridge with an outer diameter of φ20.6 mm, which is thinner than the standard cartridge, you can easily load the film without complicating the mechanism. Therefore, the total thickness of the camera is 26 mm or less and the total height is 54 mm. The following miniaturization is possible.

FIG. 5 is a sectional view of the camera, FIG. 6 is an exploded sectional view, and FIG. 7 is an exploded view of a main part.

The taking lens 12, the lens retainer 13, the sector 66, and the shutter case 11 are unitized to form a lens shutter unit LS. A light shielding frame member 19 is interposed between the lens shutter unit LS and the mounting surface portion 10M of the camera body 10. The light-shielding frame member 19 has a thin plate shape, and a plurality of positioning protrusions 19A project from the mounting surface portion 10M side.

The procedure for mounting the lens shutter unit LS will be described below.

(1) Prior to mounting the lens shutter unit LS on the camera body 10, the makeup cover 22
The front cover 20 that is integral with is removed from the camera body 10.

(2) Next, the light-shielding frame member 19 is dropped onto the mounting surface portion 10M of the camera body 10, and the projection 19A is mounted on the mounting surface portion.
The 10M recessed portion 10N is engaged and positioned and fixed.

(3) The lens shutter unit LS is placed on the light shielding frame member 19, the sector 66 and the sector lever 65 are engaged, and the shutter case 11 is locked to the camera body 10.

(4) The front cover 20 is locked and integrated with the camera body 10.

As described above, since the light shielding frame member 19 is sandwiched and fixed between the lens shutter unit LS and the camera body 10, it is easily mounted at a predetermined position, and there is no risk of falling off. Further, since an adhesive agent, a mounting screw, etc. are unnecessary, the assembling work is easy. Furthermore, since the mounting position of the light shielding frame member 19 is accurate, neither the image-side optical path of the taking lens 12 is blocked nor unnecessary light is introduced, so that a good taken image can be obtained.

A capacitor C connected to the circuit board is housed in the bottom side recess of the camera body 10. At a part of the outer peripheral surface of the condenser C, the lower light shielding wall portion of the camera body 10 is provided.
The 10P condenser chamber outer wall portion 10Q is brought into contact with and positioned. It is desirable that the thickness between the light-shielding wall portion 10P and the condenser chamber outer wall portion 10Q be minimized to reduce the overall height of the camera body 10 to make it compact.

For this reason, in the present invention, the light shielding wall portion 10P is formed on the curved surface of the concentric cylindrical surface concentric with the condenser C by improving the conventional inclined flat surface, and the necessary strength is obtained with a substantially uniform thickness, so that the camera main body can be obtained. Allowed to lower the total height of 10.

The light-shielding wall portion (inner surface antireflection wall) 10P is a black matte surface, and a plurality of parallel pleated cut grooves are formed on the curved surface of the light-shielding wall portion 10P. Regarding the pitch interval between the tips of the plurality of cut grooves, the side closer to the light-shielding frame member 19 closer to the lens shutter unit LS is formed into a fold with a coarse pitch, and the pitch closer to the image forming surface portion (screen frame) 16 is gradually increased. It was formed to have a fold shape. By forming the cut grooves having such a non-uniform pitch, even if unnecessary light other than the photographing optical path passes through the photographing lens 12 and enters the dark box portion, the light shielding wall portion (internal reflection preventing wall) 10P. The film surface is not exposed to light by being absorbed or diffusely reflected by the plurality of walls.

[0073]

According to the present invention, the camera mechanism can be simplified and the space can be utilized to suppress the cost increase, and the camera can be made compact. Further, the light shielding and the internal reflection in the aperture of the camera body prevent the captured image quality. A thin film unit with a lens with improved performance is provided.

[Brief description of drawings]

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

FIG. 2 is a development view showing the configuration of a film unit with a lens based on the present invention.

FIG. 3 is a perspective view of each mechanism such as a camera body and a front cover of the lens-equipped film unit according to the present invention as viewed from the back side.

FIG. 4 is a perspective view of a film used in the lens-equipped film unit according to the present invention.

FIG. 5 is a sectional view of a film unit with a lens according to the present invention.

FIG. 6 is an exploded cross-sectional view of the lens-equipped film unit.

FIG. 7 is an exploded perspective view of a main part of the lens-equipped film unit.

[Explanation of symbols]

 10 Camera body (unit body) 10M Lens shutter unit mounting surface portion 10P Lower light shielding wall portion (inner reflection prevention wall) 10Q Condenser chamber outer wall portion 11 Shutter case 12 Shooting lens 13 Lens holder 15C Condenser chamber 16 Screen frame (imaging surface portion) 19 Shading frame member 20 Front cover 30 Back cover 50 Film hoisting mechanism 55 Cam 56 Cam shaft 57 Hoisting stopper 58 Hoisting stopper spring 65 Sector lever 66 Sector C Condenser F Film LS Lens shutter unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kojiro Yoshida 1st Sakura-cho, Hino City, Tokyo Konica Stock Company In-house

Claims (5)

[Claims] 1. A roll of photographic film preloaded,
In a lens-equipped film unit including a film winding mechanism, a lens shutter unit, a finder portion, and a unit body, a light-shielding frame member is interposed between the lens shutter unit mounting portion of the unit body and the lens shutter unit. A film unit with lens, which is characterized by being mounted. 2. The light shielding frame member is dropped into a mounting portion of a unit main body to be loaded, and the lens shutter unit is further stacked on the light shielding frame member to be integrally assembled. Film unit with lens. 3. A roll of photographic film is preloaded,
In a film unit with a lens including a film winding mechanism, a lens shutter unit, a finder section, and a unit body, an inner surface reflection is formed in a dark box section formed between the image forming surface section of the unit body and the lens shutter unit. A film unit with a lens, wherein an anti-reflection wall is provided, and an anti-reflection wall is formed on the inner surface of the anti-reflection wall to have a curved surface shape that substantially matches the curvature of an electrical component housed in the unit body. 4. The inner surface antireflection portion is formed such that a side close to the lens shutter unit has a fold-like shape with a coarse pitch, and a side close to the image forming surface section has a fold-like shape with a fine pitch. Item 3. A film unit with a lens according to item 3. 5. The film unit with lens according to claim 3, wherein the electrical component is a strobe charging capacitor.