JPH10254030A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain a red-eye phenomenon even in the case of miniaturizing the film unit with a lens and to prevent a user from forgetting to turn off the power source battery of a stroboscope by disposing a strobe light emitting part whose attitude can be changed and disposing a cylindrical battery being a power source for a stroboscope and a main capacitor for a stroboscope in parallel under a lens barrel part. SOLUTION: The entire light emitting part 2 is held by a supporting part and a supporting shaft so as to turn with respect to a stroboscopic base 2a. A switch lever 22 is pivotally supported by the supporting shaft 23 so as to freely turn with respect to the base 2a. Then, the light emitting part 2 is moved to a position separate from the optical axis of a photographing lens further than the time when photographing with strobe light is not performed. In such a case, the main capacitor C is attached to a circuit board 3. The cylindrical battery B is attached by a positive contact piece 12 and a negative contact piece 13. Namely, the cylindrical battery B being the AAA type battery and the main capacitor C for the stroboscope are arranged in parallel under the lens barrel part holding the photographing lens, and connected to the circuit board 3 arranged on a subject side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a film unit with a lens.

[0002]

2. Description of the Related Art In a conventional film unit with a built-in strobe, a strobe power supply battery is arranged beside a scroll chamber in which an unexposed film is wound and stored in advance, and at least a mirror for holding a photographing lens. A configuration in which a strobe main condenser is arranged below a body is known.

Further, in a conventional film unit with a lens, an inner peripheral wall at a photographing opening for exposing a photographing light of a subject onto a film by a photographing lens, particularly an inner peripheral wall located at a lower portion, is exposed to sunlight or the like by back light photographing. Was reflected to cause flare on the film. For this purpose, a grain is provided on the inner peripheral wall, or a member such as flocking paper is attached.

Further, in a film unit with a lens loaded with an APS film, an APS film that has been exposed one frame at a time is taken up in a cartridge each time a picture is taken. It is in the state that was done. As a result, when the shutter is released at the time of photographing, an impact force is generated although the value is small due to the operation of a mechanical member such as the shutter, and the film slightly moves in the feeding direction. As a result, the sharpness of the shooting screen is deteriorated. In addition, in 135 film, telemps are arranged at the entrance and exit of the patrone,
Since the film is sandwiched between two telemps and pressed against each other to make the film light-tight, the film does not move in the case described above.

[0005]

In recent years, competition for miniaturization of a film unit with a lens has intensified, and there is a demand for realization of a further miniaturization. For this reason, in a lens-equipped film unit having a built-in strobe, a cylindrical battery disposed on the side of the scroll chamber may be disposed below the lens barrel together with the main condenser. As a result, the length of the film unit with the lens in the longitudinal direction is reduced by the thickness of the substantially cylindrical battery. However, the light emitting portion of the strobe also moves inward, and the distance between the optical axis of the light emitting portion and the optical axis of the photographing lens becomes small, so that red-eye is likely to occur.

[0006] In addition, it is necessary to turn on the strobe switch during flash photography, but if the user forgets to turn off this switch during normal shooting without using the flash and keeps it on, the power battery of the strobe is discharged. And
The next flash photography will not be possible.

Further, the main capacitor of the strobe is large in size as a component and protrudes from the strobe board.
There is a possibility that a malfunction such as bending the position of the main condenser by hitting something before attaching it to the camera as a strobe unit may occur.

Further, as described above, if flocked paper or the like for preventing internal reflection is adhered to the photographing opening, the cost increases due to the cost of parts and the cost of attaching. Therefore, providing a grain on the inner peripheral wall does not increase the cost, but may not be sufficient when the backlight is strong.

Further, as described above, it is necessary to prevent the film of the APS cartridge from moving due to the shutter release, resulting in a photograph having deteriorated sharpness.

[0010] Furthermore, in order to reduce the amount of waste parts and prevent pollution as much as possible and reduce costs, it is necessary to enable reuse of parts and to easily change the image of a product.

The present invention has been made to solve the above problems. In other words, it is possible to reduce the size of the strobe so that red-eye is less likely to occur even when the size is reduced, it is hard to forget to turn off the power supply battery of the strobe, the main capacitor of the strobe unit is unlikely to fail, and it is less susceptible to internal reflection at the time of backlight. To provide a film unit with a lens that realizes an inner peripheral wall at low cost, can take sharp pictures even with APS cartridge film, reduces waste parts, reduces pollution, and facilitates product change. It is intended.

[0012]

The object of the present invention is achieved by adopting the following constitution.

That is, in a film unit with a lens, at least a lens barrel holding a photographing lens is disposed between a patrone chamber for storing a patrone and a scroll chamber for winding and storing an unexposed film in advance. A strobe light emitting portion capable of changing the posture between when the strobe is photographed and when the strobe is not photographed is provided above the scroll chamber, and a cylindrical battery serving as a strobe power supply and a strobe main capacitor are provided below the lens barrel. And a film unit with a lens.

A photographic opening for exposing photographic light onto the film by a photographic lens is disposed between a patrone chamber for storing a patrone and a scroll chamber for winding and storing an unexposed film in advance. In a film unit with a lens, at least one convex wall having a surface intersecting with an optical axis of the photographing lens is provided on at least one inner peripheral wall of the inner peripheral wall of the photographing opening. Film unit.

A photographing opening for exposing photographing light onto the film by a photographing lens is disposed between a cartridge chamber for housing a cartridge and a scroll chamber for winding and storing an unexposed APS film in advance. In the film unit with the lens, a first ridge parallel to the film feeding direction is provided above and below the opening,
On the inner wall of the exterior member facing the opening, a second ridge is provided in parallel with the first ridge and outside the first ridge, and the first ridge and the second ridge are provided. A film unit with a lens, characterized in that a film is sandwiched between two ridges, and the film is pressed against the first ridge with the second ridge.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a film unit with a lens according to the present invention will be described in detail with reference to FIGS.

FIG. 1 is a front view of a film unit with a lens according to the present invention. FIG. 2 is a sectional view taken along line WW of FIG. FIG. 3 is a perspective view of a strobe unit with a light emitting unit protruding. FIG. 4 is a diagram in which the light emitting units viewed from the arrow X in FIG. 3 are stored. FIG. 5 is a diagram in which the light-emitting portion as viewed in the direction of the arrow X in FIG. 3 is projected. FIG. 6 is a perspective view in which a cylindrical battery and a strobe main capacitor are arranged in parallel. FIG. 7 is a circuit diagram of the strobe. FIG. 8 is an enlarged sectional view taken along the line YY of FIG.

Referring to FIGS. 1, 2 and 8, the lens-equipped film unit 1 of the present invention has at least a patrone chamber for storing a patrone and a scroll chamber for winding and storing an unexposed film in advance. A lens-equipped film unit in which a lens barrel 8 for holding a photographing lens is disposed, and a strobe light emitting unit 2 capable of changing its posture between when the strobe is photographed and when it is not photographed is disposed above a scroll chamber. At the same time, a cylindrical battery B as a power source for a strobe and a main capacitor C for a strobe are provided below the lens barrel 8.
And a film unit with a lens arranged in parallel.

First, the overall structure of the flash unit in the film unit with the present lens will be described with reference to FIGS.

The light emitting section 2 includes a discharge tube and a reflector not shown inside. The discharge tube has a glass tube filled with xenon gas, and is ionized by high voltage to emit light by discharge. The reflective umbrella is formed with a mirror-finished inner surface using an aluminum alloy plate, etc.
The strobe light emitted from the discharge tube is regulated and reflected so as to have a light distribution characteristic corresponding to the angle of view of the taking lens. Also,
The discharge tube and the reflector are held by a holding member (not shown). Further, a strobe panel 14 formed of a transparent or translucent material covers the front of the reflector, and a light-emitting unit cover 15 formed of an opaque material covers the top, side, and back of the reflector. Thus, the discharge tube, the reflector, the holding member, the strobe panel 14, and the light emitting unit cover 1
The unit composed of 5 is referred to as a light emitting unit 2.

A strobe base 2a serving as a foundation of a strobe unit is disposed below the light emitting unit 2, and a support (not shown) is provided on the strobe base 2a near the side wall of the holding member in the left-right direction. The holding member is rotatably held by the support shaft 21. Therefore, the entire light emitting unit 2 is rotatably held by the support unit and the support shaft 21 with respect to the strobe base 2a.

Further, a switch lever 22 is rotatably supported on the strobe base 2a by a support shaft 23. As shown in FIGS. 4 and 5, a lock portion 22 a is provided at one end of the switch lever 22, and is configured to be able to engage with a lock pin 14 a erected on a side surface of the strobe panel 14. One end of the torsion coil spring 24 is hung on the holding member, and the other end of the torsion coil spring 24 is connected to the switch lever 22.
In the groove 22b. Then, the light emitting unit 2 is urged clockwise together with the holding member.

When the flash photography is not performed, the locking pin 14a is locked by the locking portion 22a of the switch lever 22 with the front surface of the light emitting section 2, that is, the flash panel 14 facing downward, as shown in FIG. Therefore, the light emitting unit 2 is stored in the film unit with the lens.

Reference numeral 5 denotes a rear cover, which is an exterior member that covers the internal photographing mechanism together with the front cover 4 and holds the loaded film in a light-tight manner.

Next, the knob 22c of the switch lever 22
When the finger is pressed downward with a fingertip and rotated counterclockwise in FIG. 4, the locking part 22 a releases the locking of the locking pin 14 a, so that the light emitting part 2 is turned clockwise by the urging force of the torsion coil spring 24. Rotate and turn on the strobe panel 1 as shown in FIG.
The projection 4 projects from the surface of the exterior member made up of the front cover 4 and the rear cover 5 in a state in which flash photography is possible in the direction of the subject and comes into contact with a stopper (not shown) and stops.
When the finger is released from the knob 22c, the switch lever 2 is released.
2 returns to the original position by the urging force of the torsion coil spring 24. The stopper pin 14 b erected on the side of the strobe panel 14 is connected to the slope 22 d of the switch lever 22.
Is pressed, the light emitting unit 2 is stably maintained in a state of protruding upward without swinging back and forth.

As described above, the film unit 1 with the lens is made compact when the camera is normally carried, and the flash unit 2 is turned on when the flash photography is performed, compared to when the flash photography is not performed.
Is moved to a position away from the optical axis of the photographing lens as indicated by a two-dot chain line shown in FIG.

Next, when retracting the light-emitting unit 2 after performing flash photography, pushing the back surface of the light-emitting unit 2 by hand and turning it counterclockwise will cause the stopper pin 14b to be turned on the slope 22d of the switch lever 22. And then the locking pin 14
a pushes the slope 22d, the locking pin 14a moves below the locking portion 22a and is locked as shown in FIG. 4, and the light emitting unit 2 is in the retracted state.

Reference numeral 3 denotes a circuit board, not shown, on which charging circuit components and light-emitting circuit components necessary for charging and emitting light of the strobe are mounted, and integrated by an arm 2b of the strobe base 2a. Is configured.

The circuit board 3 comprises an anode, a cathode,
A lead wire (not shown) from the trigger electrode is connected.

C is a main capacitor, which is similarly mounted on the circuit board 3. B is a cylindrical battery and is not a part of the strobe unit because it is a consumable part. However, it is attached by a battery contact piece 12 and a battery contact piece 13 at the time of inspection or assembling into a film unit with a lens. it can.

Further, a strobe switch SW is arranged behind the circuit board 3, and the strobe switch SW is
Although not shown, it is operated by an arm extending from the holding member, and is turned on / off with the rotation of the light emitting unit 2. Therefore, when the light emitting unit 2 is stored, it is turned off and does not charge, but when it protrudes, it is turned on and starts charging. In this way, since the use state of the strobe is clear, there is no problem that the strobe switch is forgotten to be turned off when the strobe shooting is unnecessary, and the battery is consumed. In particular, since the lens-equipped film unit is configured so that the user cannot change the battery, it is very effective to prevent the flash switch from being turned off.

Next, in FIG. 6, the lens-fitted film unit 1 of the present invention, the lead portion C ⁺ of the two positive electrode of the main capacitor C, the negative electrode lead portion C ^- circuit board 3 is a printed circuit board in conjunction soldered, cylindrical battery positive pole B ⁺ and the negative electrode B of the B ^- abuts on the 2
Positive contact piece 12 and negative contact piece 13 which are battery contact pieces
The positive contact piece 12 on one pole / positive pole B ⁺ side is
The negative contact 13 on the side of the other pole / minus pole B ⁻ is soldered to the circuit board 3 which is the printed board, and the main capacitor C is connected to the negative contact 13 which is a battery contact to be brought into contact with the pole. Is to be held.

That is, in FIGS. 6 and 8, a cylindrical battery B, which is a AAA battery, and a main capacitor C for strobe light are used.
Are arranged in parallel below the lens barrel 8 holding the taking lens, and are connected together to the circuit board 3 arranged on the subject side. The positive electrode B ⁺ of the cylindrical battery B is pressed into contact with the positive contact piece 12 fixed to the circuit board 3, and the negative electrode B ⁻ of the cylindrical battery B is fixed to the circuit board 3,
And the main capacitor C is pressed against the end 13a of the minus contact piece 13 extending rightward.

The lead portion C ⁺ of the positive pole of the main capacitor C is connected to a hole 13b formed in the negative contact piece 13.
Is soldered to the circuit board 3 through the center. On the other hand, lead portion of the negative electrode of the main capacitor C C ^- is also soldered to the circuit board 3.

Here, a circuit diagram of the strobe will be described with reference to FIG.

In FIG. 7, B denotes a cylindrical battery, and a booster circuit VS surrounded by a two-dot chain line via one switch element SW1 of a strobe switch SW as a main switch.
It is connected to the. The booster circuit VS includes transistors Q, 1
An oscillation transformer T1 having a secondary winding T11, a secondary winding T12 and a tertiary winding, ie, a feedback winding T13, and a resistor R
1, a DC current is supplied from the cylindrical battery B to perform an oscillating operation and convert the DC current into a high-voltage AC.

The alternating current supplied from the booster circuit VS is rectified by the diode D and charged in the main capacitor C. The negative pole (-) and the positive pole (+) of the main capacitor C are connected to the cathode terminal K and the anode terminal A of the xenon discharge tube Xe, and supply a discharge current to the xenon discharge tube Xe.

The lattice G of the xenon discharge tube Xe includes:
A lighting circuit is connected. The lighting circuit includes a resistor R2, a trigger switch TSW, a primary winding T21, and a secondary winding T.
The main capacitor C is connected between a negative pole and a positive pole of the main capacitor C via a trigger coil T <b> 2 having a second coil 22. In this lighting circuit, when the trigger switch TSW is closed in response to the shutter operation, an instantaneous current flows through the primary winding T21 of the trigger coil T2 via the resistor R2, and is generated in the secondary winding T22 based on this. A pulsed voltage is applied to the grid G of the xenon discharge tube Xe,
e is emitted.

Further, the lighting circuit is connected to a warning circuit AL for warning that the user has forgotten to turn off the switch, together with an indication of the completion of charging. This warning circuit AL is inserted between the interconnection point of the resistor R2 and the trigger switch TSW and the other switch element SW2 of the strobe switch SW.
It has a series circuit of a resistor R3 and a neon tube Ne, and a capacitor C1 connected in parallel with the series circuit. The warning circuit AL is connected between both ends of the main capacitor C via the resistor R2 when the strobe switch SW is closed, and the neon tube Ne blinks to display a charge completion display and a warning to turn off the strobe switch SW.

Next, the operation of the flash circuit will be described.

First, by closing the strobe switch SW, one of the switch elements S of the strobe switch SW is switched.
The boosting circuit VS is connected to the battery B via W1. As a result, the booster circuit VS operates to output a high-voltage AC. This high-voltage AC is rectified by the diode D to become a high-voltage DC, and is charged in the main capacitor C1. When the main capacitor C1 is sufficiently charged, the release button of the film unit with the lens is pressed, the shutter is operated, and the trigger switch TSW is closed.
A voltage is applied to the grid G of e, the xenon discharge tube Xe emits light, and flash photography is performed.

The charge of the main capacitor C is:
The alarm signal is supplied to the alarm circuit AL via the resistors R2 and R3 and the other switch element SW2 of the strobe switch SW. In the warning circuit AL, the capacitor C1 is charged by the current supplied from the main capacitor C, and this charging voltage is applied to the series circuit of the resistor R3 and the neon tube Ne, so that the neon tube Ne starts discharging, that is, turns on. . Neon tube Ne
The charging voltage of the capacitor C1 is gradually reduced by turning on the LED, and when the voltage drops to a predetermined voltage, the neon tube Ne stops discharging and is turned off. As a result, the capacitor C1 is charged again, and when the charging voltage becomes higher, the neon tube Ne is discharged again to light up. In this way, the neon tube Ne emits blinking light. This flashing light serves as both a charge completion display and a warning to forget to turn off the flash switch SW.
When W is turned off, the entire circuit including the warning circuit AL stops operating.

As described above, since the negative pole (-) of the cylindrical battery B and the positive pole (+) of the main capacitor C are connected at the same potential on the ground side, the main capacitor C shown in FIG. When soldering the lead portion C ⁺ of the positive electrode to the circuit board 3, solder is applied to the hole 13 b formed in the negative contact piece 13, and the positive electrode of the main capacitor C and the negative electrode B ^{− of the} battery B are soldered. There is no problem at all even if is conducted. Accordingly, the lead portion of the negative electrode of the main capacitor C C ^- is, taking appropriate intervals so as not to contact the positive contact piece 12 and minus contact piece 13 of the cylindrical battery B, the positive electrode and the negative contact pieces of the main capacitor C 13
There is no problem even if the holes 13b are brought close to each other.

Further, in FIGS. 6 and 8, the main capacitor C is formed by bending a part of the
The main capacitor C is positioned by holding it in a U-shape from above and below by c and 13d. By doing so, even if you hit it a little before attaching it to the film unit with lens as a strobe unit,
It is possible to prevent a failure that the position of the main capacitor C is largely bent. In addition, as shown in FIG.
By slightly bending the tips of the bent portions 13c and 13d inward, the main capacitor C can be held more firmly. By thus housing the cylindrical battery B and the main capacitor C in parallel under the lens barrel 8 with the cylindrical battery B in front of the film unit with a lens, the size of the film unit with a lens can be reduced. to enable.

Next, referring to FIG. 1, FIG. 2 and FIG. 8, a film unit with lens 1 of the present invention is provided on the front surface of a front cover 4 which is an exterior member having a through-hole for transmitting light incident on a photographic lens. The decorative plate 6 is arranged.

That is, a decorative plate 6 having a relatively large area is fixed to the front cover 4 by a method such as an adhesive or the like by means of a small area projection 6a provided partially on the front surface of the front cover 4 which is an exterior member. It has become. By doing so, the rear cover 5, the main body 7 having a patrone chamber, a scroll chamber, a photographing opening, etc., a winding mechanism (not shown), a finder base 7a having a finder optical system, and a lens barrel holding a photographing lens are provided. 8, the strobe unit and the front cover 4 can be reused by checking them. The front part of the front cover 4 is covered and attached with a new decorative panel 6 or a decorative panel 6 with a changed design, thereby reducing waste parts. Film unit with pollution lens,
It is possible to provide a film unit with a lens that makes it easy to change the image of a product.

In FIGS. 2 and 8, the film unit with lens 1 of the present invention shoots photographing light between a patrone room for storing a patrone and a scroll room for winding and storing an unexposed film in advance. A lens-equipped film unit in which a photographing opening 9 for exposing a film on a film by a lens is provided. At least one inner peripheral wall of the inner peripheral wall of the photographing opening 9 has a surface intersecting with the optical axis of the photographing lens. It is a film unit with a lens provided with a plurality of convex walls 9a. The plurality of convex walls 9a are provided on an inner peripheral wall shown in the lower part of the photographing opening 9.

That is, such a convex wall 9a is connected to the photographing opening 9
Provided on the inner peripheral wall located at the lower portion of the film, reflects the bright light such as sunlight at the time of backlit photographing coming from the direction of the solid line arrow in the drawing to the position of the two-dot chain line arrow direction if there is no convex wall 9a. The occurrence of flare can be prevented by reflecting sunlight or the like in the direction of the solid line arrow in the drawing. In this case, in order to form the illustrated convex wall 9a by integral molding using a resin mold, a slide core is used in terms of the mold structure. However, when a slide core is used, the mold structure is complicated and the mold cost is increased. To reduce costs by eliminating
As shown in the figure, it is preferable to provide it only on the inner peripheral wall located below the photographing opening 9. By providing the convex wall 9a at this position, it is possible to sufficiently cope with normal backlight photography.

Referring to FIGS. 2 and 8, the film unit with lens 1 of the present invention is provided with a photographic light between a cartridge chamber for storing a cartridge and a scroll chamber for winding and storing an unexposed APS film in advance. A film unit with a lens in which a photographing opening 9 for exposing a film on a film by a photographing lens is provided, and rails 10a as first ridges parallel to a film feeding direction are provided above and below the opening 9; On the inner wall of the rear cover 5 which is an exterior member facing the opening 9, a rail 10 which is a second ridge parallel to the rail 10 a and located outside the rail 10 a
b, and a film F is formed by the rails 10a and 10b.
And a film unit with a lens for pressing the film F against the rail 10a with the rail 10b.

That is, as shown in FIG. 8, the film F includes upper and lower rails 10b located outside the upper and lower rails 10a of the photographing opening 9 and the upper and lower rails 10a of the rear cover 5.
, And the film F is pressed against the rail 10a by the rail 10b. Therefore, film F
The camera does not move at the impact force when the shutter is released, so there is no need to worry about taking a sharp picture due to film shake, and a sharp picture can always be taken.

[0051]

According to the present invention, it is possible to reduce the size of the flash unit, to reduce the possibility of red-eye generation even when the size of the flash unit is reduced, to reduce the risk of forgetting to turn off the power supply battery of the strobe, to reduce the possibility of failure of the main capacitor of the strobe unit, and to reduce the inner surface during backlighting. A lens-equipped film that realizes an inner peripheral wall that is less susceptible to reflection at low cost and can take sharp pictures even with APS cartridge film. Units will be offered.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line WW of FIG.

FIG. 3 is a perspective view of a strobe unit with a light emitting unit protruding.

FIG. 4 is a diagram in which a light-emitting unit as viewed in the direction of arrow X in FIG. 3 is stored.

FIG. 5 is a diagram in which a light-emitting portion as viewed in the direction of arrow X in FIG. 3 is protruded.

FIG. 6 is a perspective view in which a cylindrical battery and a strobe main capacitor are arranged in parallel.

FIG. 7 is a circuit diagram of a strobe light.

FIG. 8 is a sectional view taken along the line YY of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Film unit with a lens 2 Light emitting part 4 Front cover 6 Decorative plate 7 Main body part 8 Lens barrel part 9 Image taking opening part 9a Convex wall 10a, 10b Rail 12 Plus contact piece 13 Minus contact piece B Cylindrical battery C Main capacitor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Yamaguchi 1 Konica Corporation, Sakuracho, Hino City, Tokyo

Claims (6)

[Claims] 1. A patrone chamber for storing a patrone,
In a film unit with a lens in which a lens barrel holding at least a photographing lens is arranged between a scroll chamber in which an unexposed film is wound up and stored beforehand, when a strobe is photographed and not photographed above the scroll chamber A strobe light emitting portion capable of changing the posture of the strobe light, and a cylindrical battery of a strobe power supply and a strobe main capacitor are arranged in parallel below the lens barrel. With film unit. 2. The two lead portions of the main capacitor are soldered to a printed circuit board, and one of two battery contact pieces abutting on a positive pole and a negative pole of the cylindrical battery. 2. The film unit with a lens according to claim 1, wherein the first capacitor is soldered to the printed circuit board, and the other pole side holds the main capacitor by a battery contact piece contacting the pole. 3. 3. The film unit with a lens according to claim 1, wherein a decorative plate is arranged on a front surface of an exterior member having a through-hole for transmitting light incident on the photographing lens. 4. A patrone chamber for storing a patrone,
In a film unit with a lens in which a photographing opening for exposing photographing light onto the film by a photographing lens is arranged between a scroll chamber for winding and storing an unexposed film in advance, an inner peripheral wall of the photographing opening is provided. A film unit with a lens, wherein at least one or more convex walls having a surface intersecting with the optical axis of the photographing lens are provided on at least one inner peripheral wall of the lens unit. 5. The lens-fitted film unit according to claim 4, wherein the convex wall is provided on an inner peripheral wall located below the opening. 6. A photographing opening for exposing photographing light onto a film by a photographing lens is disposed between a cartridge chamber for housing a cartridge and a scroll chamber for winding and storing an unexposed APS film in advance. In the film unit with the lens, a first ridge parallel to the film feeding direction is provided above and below the opening, and an inner wall of the exterior member facing the opening is provided in parallel with the first ridge. A second ridge located outside the first ridge is provided, a film is sandwiched between the first ridge and the second ridge, and the film is sandwiched by the second ridge. A film unit with a lens, which is pressed against the first ridge.