JPH06130470A - Camera with flash device - Google Patents

Abstract

PURPOSE:To provide a camera equipped with flash light emission device, with which a print with proper hue can be generated even though a bounce photograph takes place wherein the light is reflected by a reflex part having a color. CONSTITUTION:A flash light emitting device of a camera is equipped with a strobe light emission device 17 which can make bounce light emission, a color measuring means 7 to measure the chromaticity of the light flux from the strobe device 17 in its light emitting direction at the time of bounce light emission of the device 17 by passing the light through optical filters 1a, 1b, 1c and receiving with photo-receiving elements 2a, 2b, 2c, a CPU 15 which calculates the color correcting amount on the basis of the output of the color measuring means 7, and a writing head 23 to record the information acquired by the CPU 15 on a film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of bounce photography, and more particularly to a camera capable of bounce photography in which illumination light emitted by a flash light emitting device is bounced on a reflecting portion such as a wall or ceiling to perform photography. .

[0002]

2. Description of the Related Art Conventionally, various cameras capable of bounce photographing have been proposed in which illumination light emitted from a flash light emitting device is bounced on a wall, a ceiling or the like, and the flash of the flash light emitting device is not shaded. As described above, or bounce photography is performed so that the contrast does not become high due to the unevenness of the subject when the flash fires.

[0003]

However, the conventional camera capable of bounce photographing has a problem that the color tone of the bounce light may change depending on the color of the reflecting portion. That is, the color tone does not change when reflected by a reflection part such as a white or gray wall or ceiling that has no color, but in such a case it is rather small, and the reflection part is actually slightly or considerably colored. In many cases, the color tone of the reflected light changes and the color tone of the print from the film taken is different from the proper color tone.

The present invention has been made in view of the above problems, and a camera capable of bounce photographing capable of obtaining a print with an appropriate color tone even when bounce photographing in which light is reflected by a colored reflecting portion is performed. Is intended to provide.

[0005]

To achieve the above object, a camera capable of bounce photographing according to the present invention is photographed in a normal light emission state having an emission optical axis parallel to the photographing optical axis with respect to the camera body. A flash light emitting device, which is movably provided in a bounce light emitting state having an optical axis different from the optical axis and emits light in synchronization with a release switch, and detects whether the state of the flash light emitting device is the bounce light emitting state or not. Bounce emission state detection means and a color provided substantially parallel to the emission optical axis of the flash light emission device and measuring the chromaticity of the light flux from the emission direction at least when the bounce emission state detection means determines the bounce emission state. Measuring means, a color correction amount calculating means for calculating a color correction amount for a reference color tone level based on the output of the chromaticity measuring means, and the color correction amount calculating means. Characterized by comprising the a color correction amount information storage means for storing color correction information on the film.

Further, the camera capable of bounce photographing according to the present invention has a bounce light emission having a light emission optical axis in a direction different from the normal light emission state having a light emission optical axis parallel to the photographing light axis with respect to the camera body. A flash light emitting device which is provided so as to be movable to the state and emits light in synchronization with the release switch;
Bounce light emitting state setting means for setting the flash light emitting device to the bounce light emitting state, and bounce light emitting state detecting means for detecting whether or not the state of the flash light emitting device is the bounce light emitting state by the output of the bounce light emitting state setting means, Chromaticity measuring means for measuring the chromaticity of the luminous flux from the light emitting direction when at least the bounce light emitting state detecting means is provided to be substantially parallel to the light emitting optical axis of the flash light emitting device and the bounce light emitting state is determined. Color correction amount calculation means for calculating the color correction amount for the reference color tone level based on the output of the color measurement amount means, and color correction amount information storage means for storing the color correction amount information obtained by the color correction amount calculation means in the film. And is provided.

[0007]

In the camera capable of bounce photographing according to the present invention, the flash light emitting device emits light in synchronization with the release switch, and the bounce light emitting state detecting means detects whether or not the state of the flash light emitting device is the bounce light emitting state. The chromaticity measuring means measures the chromaticity of the light beam from the light emitting direction when the bounce light emitting state detecting means determines that the light is in the bounce light emitting state, and the color correction amount calculating means is based on the output of the chromaticity measuring means. The color correction amount for the color tone level is calculated, and the color correction amount information storage unit stores the color correction amount information obtained by the color correction amount calculation unit in the film.

In the camera capable of bounce photographing according to the present invention, the flash light emitting device is set to the bounce light emitting state by the bounce light emitting state setting means, and the flash light emitting device emits light in synchronization with the release switch, and the bounce light emitting state is set. By the output of the setting means, the bounce light emission state detection means detects whether or not the state of the flash light emission device is the bounce light emission state, and at least when the bounce light emission state detection means determines the bounce light emission state, the chromaticity measurement means The chromaticity of the light flux from the light emitting direction is measured, the color correction amount calculation means calculates the color correction amount for the reference color tone level based on the output of the chromaticity measurement means, and the color obtained by this color correction amount calculation means The color correction amount information storage means stores the correction amount information in the film.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a camera capable of bounce shooting according to an embodiment of the present invention. The camera capable of bounce photographing is driven by a color measuring unit 7 which is a chromaticity measuring unit, a photometric unit 10, a strobe light emitting device 17 as a flash light emitting device controlled by a strobe control circuit 16, and a drive circuit 18. Shutter 19, diaphragm 20, film feeding motor 21, distance measuring means 12, film sensitivity setting means 11, photoreflector 22, writing head 23 as color correction amount information storage means, and release switch 24. , And a bounce switch 27 which is a bounce light emission state detecting means, and also serves as a color correction amount calculating means.
It is controlled by 5.

The colorimetric means 7 measures the chromaticity of the light on the photographic screen and outputs a color tone signal. The optical color filters 7a, 1b, 1c and the optical filters 1a, 1b, 1 are used.
light receiving elements 2a, 2b, 2c that receive light through c, photoelectric conversion circuits 3a, 3b, 3c connected to the light receiving elements 2a, 2b, 2c, and the photoelectric conversion circuits 3a, 3c.
sample-hold circuits 4a, 4b and 4c for sampling and holding the respective outputs from b and 3c, selection switches 5a, 5b and 5c for selecting the outputs from the sample-hold circuits 4a, 4b and 4c, and the selection switch 5a, 5
b and 5c are connected to the sample and hold circuits 4a and 4
The outputs of b and 4c are sequentially A / D converted and the CPU 15
And an A / D conversion unit 6 that outputs a digital signal to.

Here, the optical filter and the light receiving element are a combination of an optical filter 1a and a light receiving element 2a, an optical filter 1b and a light receiving element 2b, and an optical filter 1c and a light receiving element 2c, respectively. Spectral stimulus values x (bar) and y (Bar) and z (bar) have spectral sensitivities, as shown in FIG.
Is the spectral stimulus value x (bar), y (bar), z
It shows the spectral sensitivity characteristics of (bar).

The photometric means 10 has a light receiving element 8 for photometrically measuring the brightness of a subject, and a photometric circuit 9 for photoelectrically converting the output of the light receiving element 8 and outputting a photometric value to the CPU 15. The film sensitivity setting means 11 is a reading switch for reading the film sensitivity from the DX code provided in the film magazine 60 (see FIG. 3). The distance measuring unit 12 measures the distance to the subject and is composed of an AF sensor or the like.

The strobe control circuit 16 includes a CPU 15
The strobe light emitting circuit 17 is caused to emit light by the control signal from the. Then, this strobe light emitting device 17 is
It is composed of a tube (xenon tube) and a reflector. The drive circuit 18 drives the shutter 19, the diaphragm 20, and the film feeding motor 21 by a control signal from the CPU 15. The shutter 19 is operated by the drive circuit 18 at a predetermined shutter speed. The diaphragm 20 is changed to a predetermined diaphragm aperture by the drive circuit 18. The film feeding motor 21 winds and rewinds the film 62.

The photo reflector 22 is a film 6
2 (see Figure 3) perforation movement is detected,
The feeding signal is output to the CPU 15. The writing head 2
A magnetic head 3 records a predetermined signal on the magnetic coating surface of the film 62, and is controlled by the CPU 15. The release switch 24 is a switch that is turned on by the release operation of the photographer. The bounce switch 27 is a switch that is automatically turned on when the flash light emitting device 17 is in the bounce light emission state by the operation of the photographer.

FIGS. 3A and 3B are perspective views of the film feeding device of the camera capable of bounce photographing having such a structure, seen from the rear. Here, FIG. 3A shows a state in which the film 62 is wound on the take-up spool, and FIG. 3B shows a state in which the film 62 is rewound into the film magazine. is there.

A pinion gear 43 is provided on the output shaft of the film feeding motor 21 provided in the camera body, and the pinion gear 43 meshes with the sun gear 44. Furthermore, this sun gear 44 is a planetary gear 45.
And the planetary gear 45 engages with a gear arm 46.
Is supported so as to revolve around the rotation axis of the sun gear 44.

A winding spool 47 for winding the film 62 is rotatably provided in a film winding chamber provided on the right side of the camera body when viewed from the rear side. A spool gear 47a, which meshes with the planetary gear 45 when the planetary gear 45 revolves counterclockwise, is integrally provided on the upper end surface of the.

On the other hand, an idle gear 57 is provided at a position where it meshes with the planet gear 45 when the planet gear 45 revolves clockwise, and the planet gear 45 meshes with the idle gear 57. Through the idle gears 56, 55, 52 that are connected, the coupler gear 63
Connected to.

Further, on the left side of the rear of the camera body, there is provided a magazine storage chamber for storing a film magazine 60 shown by a chain double-dashed line. A coupler gear 63 having a coupler 64 having a tip protruding in a "-" shape is rotatably provided above the magazine storage chamber. This coupler 64 is a film magazine 6
No. 0 engages with the groove of the spool and is integrated with the spool around its axis. The coupler gear 63 is
As described above, the idle gear 52 always meshes with the idle gear 52.

Further, a photo which is fixed to the camera body at a height position, which is located slightly from the center of the take-up spool 47 and which faces the perforation of the film 62, outputs a pulse signal each time the perforation of the film 62 passes. A reflector (hereinafter, abbreviated as PR) 22 is provided.

On the back side of the film 62, a magnetic head (writing head) 23 is provided for recording predetermined information such as photographing information on a magnetic coating surface provided on the back side of the film 62. There is.

Next, the operation of the film feeding apparatus thus constructed will be described. When winding the film 62, the
As shown in (A), the planet gear 45 and the spool gear 47a are meshed with each other, and the film feeding motor 21 is rotated in the arrow direction by the control operation of the CPU 15, whereby the take-up spool 47 is rotated in the arrow direction. Film magazine 6
The film 62 is pulled out from 0 in the direction of arrow A and wound on the winding spool 47. At the same time, the feeding amount of the film 62 is detected by the photo reflector 22, and the film feeding motor 21 is stopped in a state of winding one frame. Further, during the winding operation, the magnetic head 23 receives a signal from the CPU 15.
Records shooting information on the film 62.

On the other hand, when rewinding the film 62, the CPU 1
The control information of No. 5 is recorded. When the film 62 is rewound, as shown in FIG. 3B, the planet gear 45 and the idle gear 57 are in mesh with each other, and the CPU
When the film feeding motor 21 rotates in the arrow direction by the control operation of 15, the coupler gear 53 and the coupler 54 rotate in the arrow direction, and the film 62 wound on the take-up spool 47 is placed in the film magazine 60. Rewind. At this time, the film 62 moves in the arrow B direction.

Next, the color measuring means 7, the photometric means 10 and the stroboscopic light emitting device 17 in the normal photographing state of this embodiment.
FIG. 4 shows the arrangement of the inside of the camera. As shown,
The camera body 30 is provided with a taking lens 31, and a film 62 is arranged perpendicular to the taking optical axis O behind the taking optical axis O of the taking lens 31. A writing head 23 is provided on the back side of the film 62, slightly below the back side.

On the other hand, a strobe case 28 is provided on the upper part of the camera body 30 so as to be rotatable around a shaft 29, and the strobe light emitting device 17 is provided in the strobe case 28.
And colorimetric means 7 are provided. Further, a photometric device 10 is provided below the vicinity of the strobe case 28.

The photometric means 10 has a photometric optical axis P and is provided substantially parallel to the photographing optical axis O. Further, the colorimetric means 7 has a colorimetric optical axis R and is provided substantially parallel to the stroboscopic optical axis Q of the stroboscopic light emitting device 17. In the normal shooting state, the strobe optical axis Q and the colorimetric optical axis R are set to be substantially parallel to the shooting optical axis O.

Next, FIG. 5 shows the arrangement of the color measuring unit 7, the photometric unit 10, and the stroboscopic light emitting device 17 in the camera in the bounce photographing state. As shown in the drawing, the strobe case 28 is rotated upward about an axis 29, and the stroboscopic optical axis Q and the colorimetric optical axis R, which are provided substantially in parallel with each other, are predetermined upward with respect to the photographing optical axis O. Inclined at an angle.

FIG. 6 shows a reflection state of the strobe light reflecting portion in such a bounce photographing state. As shown in the figure, the light emitted from the strobe light emitting device 17 in the strobe case 28 is reflected by the reflecting portion 32 such as the ceiling and illuminates the subject 33. Here, the chromaticity of the reflected light that illuminates the subject 33 changes depending on the color tone of the reflecting portion 32 in the strobe light flux. It should be noted that this strobe light sufficiently covers the shooting angle of view indicated by θ near the subject 33, such as the range of the strobe light flux passing through the dot.

The operation of this embodiment will be described with reference to FIG. First, it is determined whether or not the release switch 24 is turned on by the release operation (S1). If it is determined that the release switch 24 is turned on, the distance measuring means 12 measures the distance to the subject (S2), and this distance measurement information is obtained. Focusing is performed based on this (S3), the brightness of the subject is measured by the photometric means 10, and this photometric value is output to the CPU 15 (S4). Then, the CPU 15 inputs the film sensitivity value of the film sensitivity setting means 11 (S5).

The CPU 15 judges from the outputs of the photometry means 10 and the film sensitivity setting means 11 whether or not stroboscopic light emission is necessary (S6), and when it is judged that the stroboscopic light emission is unnecessary because the subject is brighter than a predetermined brightness. Is
Based on the input values from the photometric means 10 and the film sensitivity setting means 11, an appropriate shutter speed value and aperture value are calculated (S7), and the shutter 1 is driven by the drive circuit 18.
9 and the diaphragm 20 are driven and controlled according to the calculated values (S8, S
9) The film 62 is exposed.

Next, the colorimetric means 7 measures the chromaticity of the subject and outputs a color tone signal to the CPU 15 (S10). CP
U15 compares the input color tone signal with the reference color tone level, and calculates the optimum color correction amount during printing (S1).
1). Then, the CPU 15 operates the film feeding motor 21 by the drive circuit 18 to wind up the film 62 by one frame (S12), and at the same time, outputs the calculated color correction amount signal to the magnetic head 23 to perform the winding operation. To
The color correction amount information at the time of printing is recorded on the film 62 (S13).

On the other hand, when the CPU 15 determines from the outputs of the photometry means 10 and the film sensitivity setting means 11 that the subject is darker than a predetermined brightness and strobe light emission is necessary, the state of the bounce switch 27 is monitored (S14), and normal photographing is performed. If it is in the state, the appropriate shutter speed value and aperture value are calculated based on the input values from the photometric unit 10, the film sensitivity setting unit 11, and the distance measuring unit 12 (S1).
5).

Then, the drive circuit 18 causes the shutter 19
The diaphragm 20 is driven and controlled according to the calculated value, and the strobe control circuit 16 causes the strobe light emitting device 17 to emit light during the opening of the shutter 19. Here, the photometric means 10 starts photometry again from the time when the opening of the shutter 19 is started, and stops the emission of light 17 when the exposure amount on the film becomes appropriate (S16, S17).

Next, the CPU 15 turns on the film feeding motor 21, and winds the film 62 by one frame as described above (S18). At this time, the subject being exposed is less affected by the chromaticity of the external light and is almost determined by the chromaticity of the strobe light. Here, since the strobe light generally emits at a color tone level where color correction is unnecessary, during the winding operation of the film 62, color correction amount information corresponding to a color correction amount at the time of printing is zero is recorded in the magnetic recording portion of the film 62. Record (S1
9).

If the color correction amount information is not recorded on the film 62, it can be estimated that color correction is not generally performed at the time of printing. Therefore, the color correction amount information is recorded on the film 62 at the time of strobe emission. You don't have to. On the other hand, if the Xe tube of the stroboscopic light emitting device is downsized,
Sometimes the color temperature of the emitted light rises and color correction is required. In a camera having such a strobe light emitting device, a predetermined value corresponding to the difference between the color tone of the strobe light and the reference color tone level may be recorded on the film 62 as color correction amount information.

On the other hand, the CPU 15 uses the bounce switch 2
If it is determined by the monitor 7 that the camera is in the bounce photographing state, an appropriate shutter speed value and aperture value are calculated based on the input values from the photometric means 10 and the film sensitivity setting means 11 (S20). Then, the drive circuit 18 drives and controls the shutter 19 and the diaphragm 20 according to the calculated values, and the flash control circuit 1 is provided in the opening of the shutter 19.
6, the strobe light emitting device 17 is caused to emit light. Here, the photometric means 10 starts photometry again from the time when the opening of the shutter 19 is started, and when the exposure amount on the film becomes appropriate, 1
The light emission of 7 is stopped. Further, the colorimetric means 7 measures the chromaticity of the reflection area in the strobe light emission direction from the start of light emission to the stop of light emission of 17 and outputs a color tone signal to the CPU 15 (S21, S22). Next, the CPU 15 compares the color tone signal input from the color measuring unit 7 with the reference color tone level, and calculates the optimum color correction amount during printing (S23).

Next, the CPU 15 operates the film feeding motor 21 by the drive circuit 18 to wind up the film 62 by one frame (S12), and at the same time, outputs the calculated color correction signal to the magnetic head 23 to perform the winding operation. Inside, the color correction amount information at the time of printing is recorded on the film 62 (S25). Further, it is determined whether or not the winding of one frame is completed, and when it is completed, the film feeding motor 21 is turned off (S26, S27), and this sequence is ended.

In this embodiment, the bounce switch 2
7 has been described to be turned on automatically when the strobe light emitting device 17 is in the bounce flashing state, but a switch that is a bounce flashing state setting means is provided, and the flash is automatically turned on by operating this switch. It may be a camera in which the device 17 is in the bounce state and the bounce state is detected when the switch is turned on. In addition, a bounce state may be detected when the photographer is provided with a manual setting switch for manually switching to set the angle in the elevation angle direction and thereby setting the bounce state.

In this embodiment, the reflection type colorimetric means has been described, but it is also possible to use an incident light type colorimetric means in which a white optical filter is provided in front of the optical filters 1a, 1b and 1c. Needless to say.

[0040]

As described above, according to the present invention, there is provided a camera capable of bounce photographing capable of obtaining a print with an appropriate color tone even when bounce photographing in which light is reflected by a colored reflecting portion. can do.

[Brief description of drawings]

FIG. 1 is a block diagram showing a camera capable of bounce shooting according to an embodiment of the present invention.

FIG. 2 is a diagram showing the spectral sensitivity of a spectral stimulus value obtained by a combination of the optical filter and the light receiving element of the above embodiment.

FIG. 3 is a rear perspective view of the film feeding device of the camera capable of bounce photographing of the above embodiment, in which (A) film is wound on a take-up spool, and (B) film is placed in a film magazine. The perspective view which showed the state which rewinded from the back.

FIG. 4 is a side perspective view showing the arrangement of the color measuring unit, the photometric unit, and the stroboscopic light emitting device in the camera in the normal photographing state of the above embodiment.

FIG. 5 is a side perspective view showing the arrangement of the color measuring unit, the photometric unit, and the stroboscopic light emitting device in the camera in the bounce photographing state of the above embodiment.

FIG. 6 is a diagram showing a reflection state of a stroboscopic light beam by a reflection section in the bounce photographing state of the embodiment.

FIG. 7 is a flowchart showing the operation of the camera capable of bounce shooting according to the above embodiment.

[Explanation of symbols]

 7 ... Color measurement means (chromaticity measurement means) 15 ... CPU (color correction amount calculation means) 17 ... Strobe light emission device (flash light emission device) 23 ... Writing head (color correction amount information storage means) 27 ... Bounce switch (bounce state) Detection means)

[Procedure amendment]

[Submission date] June 15, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Camera having flash light emitting device

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention has a flash light emitting device.
Camera, and more particularly, flash to perform photographing illumination light emitted by the flash light emission device by bouncing reflection portion such as a wall or ceiling
The present invention relates to a camera having a light emitting device .

[0002]

2. Description of the Related Art A flash light emitting device has a flash light emitting device that bounces illumination light emitted from the flash light emitting device onto a wall, a ceiling, or the like for photographing.
Various cameras have been proposed in the past, and bounce photography was performed so that the shadow of a strobe, which is a flash light emitting device, does not appear, or that the contrast does not become high due to the unevenness of the subject when the strobe emits light.

[0003]

However, the camera having the above-described conventional flash light emitting device has a problem that the color tone of the bounce light may change depending on the color of the reflecting portion. That is, the color tone does not change when reflected by a reflection part such as a white or gray wall or ceiling that has no color, but in such a case it is rather small, and the reflection part is actually slightly or considerably colored. In many cases, the color tone of the reflected light changes and the color tone of the print from the film taken is different from the proper color tone.

The present invention has been made in view of the above problems, and has a flash light emitting device capable of obtaining a print with an appropriate color tone even when performing bounce photography in which light is reflected by a colored reflecting portion. The purpose is to provide a camera .

[0005]

To achieve the above object, according to the solution to ## camera having a flash light emission device according to the present invention, Ba
Flash light emitting device capable of emitting light
Luminous flux from the flash direction of the flash device
Colorimetric means for measuring the chromaticity of the
The calculation means for calculating the color correction amount based on
Recording means for recording the information obtained on the film
I have it.

[0006]

A camera having a flash light emitting device according to the present invention is
When the flash device emits a bounce light, the color measurement means
Measures the chromaticity of the luminous flux from the flash direction of the flash device
Then, based on the output of this color measurement means, the calculation means
Is calculated and the information obtained by this calculation means is recorded.
Steps record on film.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a flash light emitting device according to an embodiment of the present invention.
3 is a block diagram showing a camera . This flash light emitting device
A camera having a color measuring unit 7 which is a chromaticity measuring unit,
A photometric device 10, a flash device 17 as a flash device controlled by a flash control circuit 16, a shutter 19, a diaphragm 20, a film feeding motor 21 driven by a drive circuit 18, and a distance measuring device 12, It has a film sensitivity setting means 11, a photo reflector 22, a write head 23 as a color correction amount information storage means, a release switch 24, and a bounce switch 27 which is a bounce light emission state detecting means, and calculates a color correction amount. CU that doubles as a means
It is controlled by P15.

The colorimetric means 7 measures the chromaticity of the light on the photographic screen and outputs a color tone signal. The optical color filters 7a, 1b, 1c and the optical filters 1a, 1b, 1c.
light receiving elements 2a, 2b, 2c that receive light through c, photoelectric conversion circuits 3a, 3b, 3c connected to the light receiving elements 2a, 2b, 2c, and the photoelectric conversion circuits 3a, 3c.
sample-hold circuits 4a, 4b and 4c for sampling and holding the respective outputs from b and 3c, selection switches 5a, 5b and 5c for selecting the outputs from the sample-hold circuits 4a, 4b and 4c, and the selection switch 5a, 5
b and 5c are connected to the sample and hold circuits 4a and 4
The outputs of b and 4c are sequentially A / D converted and the CPU 15
And an A / D conversion unit 6 that outputs a digital signal to.

Here, the optical filter and the light receiving element are a combination of the optical filter 1a and the light receiving element 2a, the optical filter 1b and the light receiving element 2b, and the optical filter 1c and the light receiving element 2c, respectively. Spectral stimulus values x (bar) and y (Bar) and z (bar) have spectral sensitivities, as shown in FIG.
Is the spectral stimulus value x (bar), y (bar), z
It shows the spectral sensitivity characteristics of (bar).

The photometric means 10 has a light receiving element 8 for photometrically measuring the brightness of a subject, and a photometric circuit 9 for photoelectrically converting the output of the light receiving element 8 and outputting a photometric value to the CPU 15. The film sensitivity setting means 11 is a reading switch for reading the film sensitivity from the DX code provided in the film magazine 60 (see FIG. 3). The distance measuring unit 12 measures the distance to the subject and is composed of an AF sensor or the like.

The strobe control circuit 16 includes a CPU 15
The strobe light emitting circuit 17 is caused to emit light by the control signal from the. Then, this strobe light emitting device 17 is
It is composed of a tube (xenon tube) and a reflector. The drive circuit 18 drives the shutter 19, the diaphragm 20, and the film feeding motor 21 by a control signal from the CPU 15. The shutter 19 is operated by the drive circuit 18 at a predetermined shutter speed. The diaphragm 20 is changed to a predetermined diaphragm aperture by the drive circuit 18. The film feeding motor 21 winds and rewinds the film 62.

The photo reflector 22 is a film 6
2 (see Figure 3) perforation movement is detected,
The feeding signal is output to the CPU 15. The writing head 2
A magnetic head 3 records a predetermined signal on the magnetic coating surface of the film 62, and is controlled by the CPU 15. The release switch 24 is a switch that is turned on by the release operation of the photographer. The bounce switch 27 is a switch that is automatically turned on when the flash light emitting device 17 is in the bounce light emission state by the operation of the photographer.

A camera having a flash light emitting device having such a structure.
FIGS. 3 (A) and 3 (B) are perspective views of the Mera film feeding device seen from the rear. Here, FIG. 3A shows a state in which the film 62 is wound on the take-up spool, and FIG. 3B shows a state in which the film 62 is rewound into the film magazine. is there.

A pinion gear 43 is provided on the output shaft of the film feeding motor 21 provided in the camera body, and the pinion gear 43 meshes with the sun gear 44. Furthermore, this sun gear 44 is a planetary gear 45.
And the planetary gear 45 engages with a gear arm 46.
Is supported so as to revolve around the rotation axis of the sun gear 44.

A winding spool 47 for winding the film 62 is rotatably provided in a film winding chamber provided on the right side of the camera body when viewed from the rear side. A spool gear 47a, which meshes with the planetary gear 45 when the planetary gear 45 revolves counterclockwise, is integrally provided on the upper end surface of the.

On the other hand, an idle gear 57 is provided at a position where the planet gear 45 meshes with the planet gear 45 when the planet gear 45 revolves clockwise, and the planet gear 45 meshes with the idle gear 57. Through the idle gears 56, 55, 52 that are connected, the coupler gear 63
Connected to.

On the left side of the rear of the camera body, there is provided a magazine storage chamber for storing the film magazine 60 indicated by the chain double-dashed line. A coupler gear 63 having a coupler 64 having a tip protruding in a "-" shape is rotatably provided above the magazine storage chamber. This coupler 64 is a film magazine 6
No. 0 engages with the groove of the spool and is integrated with the spool around its axis. The coupler gear 63 is
As described above, the idle gear 52 always meshes with the idle gear 52.

Further, a photo which is fixed to the camera body at a height position, which is slightly opposite from the center of the take-up spool 47, and which opposes the perforation of the film 62, outputs a pulse signal every time the perforation of the film 62 passes. A reflector (hereinafter, abbreviated as PR) 22 is provided.

On the back side of the film 62, there is provided a magnetic head (writing head) 23 for recording predetermined information such as photographing information on a magnetic coated surface provided on the back side of the film 62. There is.

Next, the operation of the film feeding apparatus thus constructed will be described. When winding the film 62, the
As shown in (A), the planet gear 45 and the spool gear 47a are meshed with each other, and the film feeding motor 21 is rotated in the arrow direction by the control operation of the CPU 15, whereby the take-up spool 47 is rotated in the arrow direction. Film magazine 6
The film 62 is pulled out from 0 in the direction of arrow A and wound on the winding spool 47. At the same time, the feeding amount of the film 62 is detected by the photo reflector 22, and the film feeding motor 21 is stopped in a state of winding one frame. Further, during the winding operation, the magnetic head 23 receives a signal from the CPU 15.
Records shooting information on the film 62.

On the other hand, when rewinding the film 62, the CPU 1
The control information of No. 5 is recorded. When the film 62 is rewound, as shown in FIG. 3B, the planet gear 45 and the idle gear 57 are in mesh with each other, and the CPU
When the film feeding motor 21 rotates in the arrow direction by the control operation of 15, the coupler gear 53 and the coupler 54 rotate in the arrow direction, and the film 62 wound on the take-up spool 47 is placed in the film magazine 60. Rewind. At this time, the film 62 moves in the arrow B direction.

Next, the color measuring means 7, the photometric means 10 and the stroboscopic light emitting device 17 in the normal photographing state of this embodiment.
FIG. 4 shows the arrangement of the inside of the camera. As shown,
The camera body 30 is provided with a taking lens 31, and a film 62 is arranged perpendicular to the taking optical axis O behind the taking optical axis O of the taking lens 31. A writing head 23 is provided on the back side of the film 62, slightly below the back side.

On the other hand, a strobe case 28 is provided on the upper part of the camera body 30 so as to be rotatable around a shaft 29, and the strobe light emitting device 17 is provided in the strobe case 28.
And colorimetric means 7 are provided. Further, a photometric device 10 is provided below the vicinity of the strobe case 28.

The photometric means 10 has a photometric optical axis P and is provided substantially parallel to the photographing optical axis O. Further, the colorimetric means 7 has a colorimetric optical axis R and is provided substantially parallel to the stroboscopic optical axis Q of the stroboscopic light emitting device 17. In the normal shooting state, the strobe optical axis Q and the colorimetric optical axis R are set to be substantially parallel to the shooting optical axis O.

Next, FIG. 5 shows the arrangement of the color measuring unit 7, the photometric unit 10, and the strobe light emitting device 17 in the camera in the bounce photographing state. As shown in the drawing, the strobe case 28 is rotated upward about an axis 29, and the stroboscopic optical axis Q and the colorimetric optical axis R, which are provided substantially in parallel with each other, are predetermined upward with respect to the photographing optical axis O. Inclined at an angle.

FIG. 6 shows a reflection state of the strobe light reflecting portion in such a bounce photographing state. As shown in the figure, the light emitted from the strobe light emitting device 17 in the strobe case 28 is reflected by the reflecting portion 32 such as the ceiling and illuminates the subject 33. Here, the chromaticity of the reflected light that illuminates the subject 33 changes depending on the color tone of the reflecting portion 32 in the strobe light flux. It should be noted that this strobe light sufficiently covers the shooting angle of view indicated by θ near the subject 33, such as the range of the strobe light flux passing through the dot.

The operation of this embodiment will be described with reference to FIG. First, it is determined whether or not the release switch 24 is turned on by the release operation (S1). If it is determined that the release switch 24 is turned on, the distance measuring means 12 measures the distance to the subject (S2), and this distance measurement information is obtained. Focusing is performed based on this (S3), the brightness of the subject is measured by the photometric means 10, and this photometric value is output to the CPU 15 (S4). Then, the CPU 15 inputs the film sensitivity value of the film sensitivity setting means 11 (S5).

The CPU 15 judges from the outputs of the photometry means 10 and the film sensitivity setting means 11 whether or not stroboscopic light emission is necessary (S6), and when it is judged that the stroboscopic light emission is unnecessary because the object is brighter than a predetermined brightness. Is
Based on the input values from the photometric means 10 and the film sensitivity setting means 11, an appropriate shutter speed value and aperture value are calculated (S7), and the shutter 1 is driven by the drive circuit 18.
9 and the diaphragm 20 are driven and controlled according to the calculated values (S8, S
9) The film 62 is exposed.

Next, the color measuring means 7 measures the chromaticity of the subject and outputs a color tone signal to the CPU 15 (S10). CP
U15 compares the input color tone signal with the reference color tone level, and calculates the optimum color correction amount during printing (S1).
1). Then, the CPU 15 operates the film feeding motor 21 by the drive circuit 18 to wind up the film 62 by one frame (S12), and at the same time, outputs the calculated color correction amount signal to the magnetic head 23 to perform the winding operation. To
The color correction amount information at the time of printing is recorded on the film 62 (S13).

On the other hand, if the CPU 15 determines from the outputs of the photometric means 10 and the film sensitivity setting means 11 that the subject is darker than a predetermined brightness and strobe light emission is necessary, the CPU 15 monitors the state of the bounce switch 27 (S14) to perform normal photographing. If it is in the state, the appropriate shutter speed value and aperture value are calculated based on the input values from the photometric unit 10, the film sensitivity setting unit 11, and the distance measuring unit 12 (S1).
5).

Then, the shutter 19 is driven by the drive circuit 18.
The diaphragm 20 is driven and controlled according to the calculated value, and the strobe control circuit 16 causes the strobe light emitting device 17 to emit light during the opening of the shutter 19. Here, the photometric means 10 starts photometry again from the time when the opening of the shutter 19 is started, and stops the emission of light 17 when the exposure amount on the film becomes appropriate (S16, S17).

Next, the CPU 15 turns on the film feeding motor 21, and winds the film 62 by one frame as described above (S18). At this time, the subject being exposed is less affected by the chromaticity of the external light and is almost determined by the chromaticity of the strobe light. Here, since the strobe light generally emits at a color tone level where color correction is unnecessary, during the winding operation of the film 62, color correction amount information corresponding to a color correction amount at the time of printing is zero is recorded in the magnetic recording portion of the film 62. Record (S1
9).

When the color correction amount information is not recorded on the film 62, it can be estimated that color correction is not generally performed at the time of printing. Therefore, the color correction amount information is recorded on the film 62 at the time of flash emission. You don't have to. On the other hand, if the Xe tube of the stroboscopic light emitting device is downsized,
Sometimes the color temperature of the emitted light rises and color correction is required. In a camera having such a strobe light emitting device, a predetermined value corresponding to the difference between the color tone of the strobe light and the reference color tone level may be recorded on the film 62 as color correction amount information.

On the other hand, the CPU 15 uses the bounce switch 2
If it is determined by the monitor 7 that the camera is in the bounce photographing state, an appropriate shutter speed value and aperture value are calculated based on the input values from the photometric means 10 and the film sensitivity setting means 11 (S20). Then, the drive circuit 18 drives and controls the shutter 19 and the diaphragm 20 according to the calculated values, and the flash control circuit 1 is provided in the opening of the shutter 19.
6, the strobe light emitting device 17 is caused to emit light. Here, the photometric means 10 starts photometry again from the time when the opening of the shutter 19 is started, and when the exposure amount on the film becomes appropriate, 1
The light emission of 7 is stopped. Further, the colorimetric means 7 measures the chromaticity of the reflection area in the strobe light emission direction from the start of light emission to the stop of light emission of 17 and outputs a color tone signal to the CPU 15 (S21, S22). Next, the CPU 15 compares the color tone signal input from the color measuring unit 7 with the reference color tone level, and calculates the optimum color correction amount during printing (S23).

Next, the CPU 15 operates the film feeding motor 21 by the drive circuit 18 to wind up the film 62 by one frame (S12), and at the same time, outputs the calculated color correction signal to the magnetic head 23 to perform the winding operation. Inside, the color correction amount information at the time of printing is recorded on the film 62 (S25). Further, it is determined whether or not the winding of one frame is completed, and when it is completed, the film feeding motor 21 is turned off (S26, S27), and this sequence is ended.

In this embodiment, the bounce switch 2
7 has been described to be turned on automatically when the strobe light emitting device 17 is in the bounce flashing state, but a switch that is a bounce flashing state setting means is provided, and the flash is automatically turned on by operating this switch. It may be a camera in which the device 17 is in the bounce state and the bounce state is detected when the switch is turned on. In addition, a bounce state may be detected when the photographer is provided with a manual setting switch for manually switching to set the angle in the elevation angle direction and thereby setting the bounce state.

In the present embodiment, the reflection type colorimetric means has been described, but an incident light type colorimetric means in which a white optical filter is provided in front of the optical filters 1a, 1b and 1c may be used. Needless to say.

[0038]

As described above, according to the present invention, a flash light emission that can obtain a print with an appropriate color tone even when performing bounce photography in which light is reflected by a colored reflecting portion.
A camera having the device can be provided.

[Brief description of drawings]

FIG. 1 is a turtle having a flash light emitting device according to an embodiment of the present invention.
The block diagram which shows LA .

FIG. 2 is a diagram showing the spectral sensitivity of a spectral stimulus value obtained by a combination of the optical filter and the light receiving element of the above embodiment.

FIG. 3 is a perspective view of the film feeding device of the camera having the flash light emitting device of the above embodiment, showing (A) the film being wound around the take-up spool, and (B) the film inside the film magazine. The perspective view which showed the state rewound to the back from the back.

FIG. 4 is a side perspective view showing the arrangement of the color measuring unit, the photometric unit, and the stroboscopic light emitting device in the camera in the normal photographing state of the above embodiment.

FIG. 5 is a side perspective view showing the arrangement of the color measuring unit, the photometric unit, and the stroboscopic light emitting device in the camera in the bounce photographing state of the above embodiment.

FIG. 6 is a diagram showing a reflection state of a stroboscopic light beam by a reflection section in the bounce photographing state of the embodiment.

FIG. 7 is a flowchart showing the operation of a camera having the flash light emitting device of the above embodiment.

[Explanation of Codes] 7 ... Colorimetric means (chromaticity measuring means) 15 ... CPU (color correction amount calculating means) 17 ... Strobe light emitting device (flash light emitting device) 23 ... Writing head (color correction amount information storing means) 27 ... Bounce switch (bounce state detection means)

Claims (3)

[Claims] 1. A camera body is provided so as to be movable between a normal emission state having an emission optical axis parallel to the photographing optical axis and a bounce emission state having an emission optical axis in a direction different from the photographing optical axis. , A flash light emitting device which emits light in synchronization with the release switch, a bounce light emitting state detecting means for detecting whether or not the state of the flash light emitting device is a bounce light emitting state, and a light emitting optical axis of the flash light emitting device provided substantially parallel to each other. And a chromaticity measuring means for measuring the chromaticity of the luminous flux from the light emitting direction at least when the bounce light emitting state detecting means determines the bounce light emitting state, and a reference color tone level based on the output of the chromaticity measuring means. And a color correction amount information storage unit for storing the color correction amount information obtained by the color correction amount calculation unit on the film. Bounce camera capable of photographing, characterized in that. 2. The camera body is provided so as to be movable between a normal light emission state having an emission optical axis parallel to the photographing optical axis and a bounce emission state having an emission optical axis in a direction different from the photographing optical axis. , A flash light emitting device which emits light in synchronization with the release switch, a bounce light emitting state setting means for setting the flash light emitting device to a bounce light emitting state, and the state of the flash light emitting device is bounced by the output of the bounce light emitting state setting means. A bounce light emitting state detecting means for detecting whether or not the light emitting state is provided, and a light emitting direction provided at substantially the same direction as the light emitting optical axis of the flash light emitting device, and at least when the bounce light emitting state detecting means determines the bounce light emitting state. Measuring means for measuring the chromaticity of the light flux from the color compensating means, and a color compensating means for calculating a color correction amount for a reference color tone level based on the output of the chromaticity measuring means. The amount calculating means and bounce camera capable of photographing, characterized by comprising a color correction amount information storage means for storing color correction information obtained by the color correction amount calculation means on the film, the. 3. The camera capable of bounce photographing according to claim 2, wherein the bounce light emission state setting means comprises a manual setting switch for setting an angle in the elevation direction.