JP2000321617A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera which is equipped with a stroboscopic device, and whose cost is prevented from increasing, and which does not become large in size by effectively using the wide spectroscopic characteristics and flashing performance of strobe light. SOLUTION: As for the camera equipped with the strobe light emitting part 13, the camera can be switched to a 1st state where a filter 14 for taking out the specified wavelength component of the strobe light is arranged ahead in the irradiating direction of the part 13 and a 2nd state where the light is emitted by using the whole wavelength of the part 13 without the installation of the filter 14. And, the camera is controlled so as to be successively switched to the 1st state and the 2nd state by a driver 21, and a signal for detecting the driving position by the driver 21 is detected by a position detecting switch 19. The light emitting timing of the strobe light emitting part 13 is decided by a CPU 22 based on the output timing of the position detecting switch 19 and the prescribed data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly, to an improvement in a camera strobe device.

[0002]

2. Description of the Related Art In the camera industry where miniaturization and cost reduction are progressing, focusing on one product, there is a fact that the ratio of strobe parts to the cost and volume of the camera is very large.

Paying attention to the fact that the strobe has no purpose other than assisting the light quantity at the time of exposure, the design of the whole camera has been advanced, and the applicant of the present invention has disclosed, for example, Japanese Patent Application Laid-Open Nos. Japanese Patent Application Laid-Open Publication No. H11-64131 and the like have proposed a wider variety of applications by switching the optical path and light condensing property of strobe light.

[0004]

However, the above-mentioned Japanese Patent Application Laid-Open Nos. Hei 8-210840 and Hei 9-1339 disclose the above problems.
In the technique described in Japanese Patent Publication No. 51, as an auxiliary light source for autofocus, switching of the irradiation angle is mainly performed.

For this reason, in addition to the above, a technology has been developed in which the flash device of the strobe light and a wavelength characteristic having a wide spectrum distribution are more effectively used to further apply the strobe device to multiple functions.

For example, if a strobe device can be applied as a light emitting light source for other functions of a camera, it can be applied as a light source for displaying timing at the time of self-timer shooting or as other warning means. In addition, if light emission of various colors is enabled, it becomes possible to apply colors to the screen or to switch colors between so-called pre-light emission for preventing red-eye and actual light emission.

Also, it has been known that color has an effect of causing various emotions to humans since ancient times, and a camera having a multicolored light-emitting form may enhance commercial value. It is said that Russian composer Scriabin and others used a piano that emits light beams of different colors to envisage a masterpiece "Poetry of Fire", but a device that can switch the emission color according to the scene at that time is a personal It should be widely accepted as youth.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a camera having a strobe device, which makes effective use of the wide spectral characteristics and flash light emission of the strobe light, does not increase the cost, and does not increase the size. Aim.

[0009]

That is, the present invention relates to a camera having an exposure control strobe for emitting light from a discharge tube, and a filter member for extracting a specific wavelength component of the strobe light in front of the strobe irradiation direction. Alternatively, a first state in which an optical member for condensing and projecting the strobe light is disposed, and a second state in which light emission is performed using the entire wavelength of the discharge tube without disposing the filter member or the optical member. In a switchable camera, a drive unit capable of controlling the first state and the second state by sequentially switching the first state and the second state; a detection unit for outputting a signal for detecting a drive position of the drive unit; Control means for determining the light emission timing of the exposure control strobe from the output timing of the means and predetermined data.

According to another aspect of the present invention, there is provided a camera having a strobe for exposure control, a filter member provided on a front surface of an irradiation unit of the strobe and capable of switching a plurality of transmission colors.
Control means for controlling the emission of the strobe light a plurality of times while switching and controlling the transmission color of the filter member prior to photographing using the strobe light.

According to the present invention, there is provided a camera having an exposure controlling strobe for emitting light from a discharge tube, wherein a filter member for extracting a specific wavelength component of the strobe light or the strobe light is condensed in front of an irradiation direction of the strobe. It is possible to switch between a first state in which an optical member for projecting light is disposed and a second state in which light emission is performed using the entire wavelength of the discharge tube without disposing the filter member or the optical member. The first state and the second state are sequentially switched and controlled by the driving means, and a signal for detecting a driving position by the driving means is detected by the detecting means. The emission timing of the exposure control strobe is determined by the control means from the output timing of the detection means and the predetermined data.

Further, according to the present invention, in a camera having a strobe for exposure control, a filter member provided on a front surface of the irradiation unit of the strobe and capable of switching a plurality of transmission colors includes:
Prior to the photographing using the strobe light, the control means switches and controls the transmission color by the control means.
At the same time, the light emission of the strobe is controlled a plurality of times.

The present invention utilizes the flash properties of strobe light and utilizes the fact that one light emission time is extremely short.

For example, as shown in FIG. 2A, when the image of the lamp is projected with the positional relationship between the optical system 1 and the lamp 2 shifted, as shown in FIG. The light image 3 blurs according to the movement of the optical system.

However, as shown in FIG. 2C, when the projection is performed using the strobe 4, the strobe light is a flash light, so that the time for starting and ending the light emission is short, and when the light is emitted at a specific position, The projected image 5 is projected without bleeding (see FIG. 2D).

Therefore, accurate light projection without bleeding can be performed by the light emission control in accordance with the timing signal for monitoring the specific position.

If the color of the optical system is changed, a specific color can be emitted by a wide wavelength distribution of the strobe light. When light is emitted while changing colors, there is an advantage that various colors can be projected.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a perspective view of the appearance of a camera, and FIG. FIG.

As shown in FIG. 1A, a strobe light emitting unit 13 is provided on the front of the camera 10 together with a photographing lens 11 and a distance measuring optical system (distance measuring device) 12. In this figure, a filter 14 shown in broken lines inside the camera exterior can be inserted into an optical path in front of the strobe light emitting section 13.

Referring to FIG. 1B, a strobe light emitting unit 13 is provided.
And the filter 14 are arranged in the positional relationship as described above.

A solenoid 17 comprising an iron core 17a and a plunger 17b is connected to the filter 14. When power is supplied to the plunger 17b from the driver 21, the force of the spring 16 is overcome and the iron core 17a is attracted. Therefore, this filter 14
It is pulled up by the force of the spring 18 attached to the filter 14 around the center 4a. At this time, since the lever portion 14b of the filter 14 presses the position detection switch 19 to be turned on while the filter 14 is rising, the control circuit (CPU) 22 can determine whether the filter 14 has entered the optical path.

On the other hand, when the driver 21 stops supplying the current, the plunger 17b loses the suction force, the spring 16 pushes up the lever portion 14b, and the filter 14 comes off the optical path of the strobe light emission.

As described above, the strobe light emitting portion 1 is generated by the attraction force of the plunger 17b and the force of the two springs 16 and 18.
When 3 emits light, the waveform distribution of light emitted forward can be switched.

The control circuit (CPU) 22 is connected to the strobe light-emitting unit 13 via a booster circuit 23 and a charging capacitor 24.
The distance measuring device 12, the trigger circuit 25, the camera control switch 28, and the EEPROM 29 are connected.

The CPU 22 is constituted by a one-chip microcomputer or the like for centrally controlling the operation sequence of the camera. That is, CP
U22 first charges the capacitor 24 with the booster circuit 23 in order to make the strobe light emitting section 13 emit light,
Stores high voltage energy. Then, at the time of light emission, the trigger circuit 25 is controlled to apply a trigger voltage to the xenon tube, which is the light emitting tube of the strobe light emitting unit 13, to excite the inside of the tube and cause discharge light emission.

Further, an input by a user operation on the control switch 28 of the camera is detected to control a photographing sequence. That is, using the distance measuring device 12, the subject distance L
Is obtained, the focusing means (not shown) is controlled so as to be in focus, and shutter control is performed to perform photographing.

Next, the distance measuring device 12 according to the first embodiment will be described with reference to FIG.

In FIG. 3, light receiving lenses 12a, 12b
Represents the light / dark distribution of the image of the subject 30 with the line sensor 3
1a and 31b. The photocurrent output from each sensor constituting the sensor array of the line sensors 31a and 31b is converted into a digital value by the A / D converter 32. The two image signals obtained by this change the relative position according to the principle of triangulation with the parallax B of the two light receiving lenses 12a and 12b, the focal length f and the distance L. It is the correlation operation unit 33 provided in the CPU 22 that determines these relative deviation amounts.

More specifically, this is a calculation in which two images are compared with each other while being shifted little by little in calculation, and a shift amount having the smallest difference is obtained as a relative shift amount of the images. By comparing such images, the more the contrast of the image changes, the more accurate distance measurement can be performed. Therefore, in a dark scene, the auxiliary light is emitted by the strobe light emitting unit 13 to improve the contrast.

FIGS. 4A and 4B are characteristic diagrams showing what A / D conversion values each sensor outputs. The low-contrast subject as shown in FIG.
As shown in (b), the contrast can be high.

However, depending on the shooting scene, there is a case where irradiation of the auxiliary light by the strobe is not allowed.

For example, in an art museum as shown in FIG. 5, strobe photography is prohibited because there is a possibility that the color of the painting 35 may be deteriorated by light. In this case, the photographer 36 needs to set the camera 10 in the flash-off mode.
Is dark and tends to have low contrast. Therefore, correct focusing cannot be performed without the auxiliary light.

Therefore, in the first embodiment, the above-described filter 14 is used as a filter for cutting visible light and transmitting infrared light, and the filter 14 is inserted into the optical path of the strobe in a place where strobe is prohibited. To cut off visible light. In such a case, if the user selects the strobe-off mode, the CPU 22 performs shooting in a sequence as shown in FIG.

Hereinafter, the photographing operation of the camera will be described with reference to the flowchart of FIG. 6 and the timing chart of FIG.

If the release switch is turned on in step S1, it is determined in step S2 whether or not the flash mode is off. If the mode is the strobe off mode, the process proceeds to step S3 to execute the EEPR
A predetermined delay time t ₁ is read from OM 29.

Further, in step S4, the plunger 17b
Is turned on, the state of the position detection switch 19 is determined in the following step S5. Here, when the position detection switch 19 is turned on, a counter (not shown) is operated in step S6, and a predetermined time t is set in step S7.
_It is determined whether ₁ has elapsed.

Then, in this step S7, the delay time t
_{If 1} has elapsed, then in step S8, when flash emission and ranging are performed, the process exits this routine.

The timing of the delay time t ₁ varies from one camera to another due to variations in parts and assembling quality, so that it is checked in advance during camera manufacture and electrically writable memory (EEPROM 29). To store the appropriate value.

If this time t ₁ is not correct, FIG.
As shown in (1), the strobe light emitting unit 13 and the filter 14 rotating in the direction of arrow A in the figure are displaced, and visible light leaks. Then, in the case of the shooting scene as shown in FIG. 5, valuable cultural heritage is deteriorated.

Therefore, as shown in FIG. 8B, it is necessary to control the time t ₁ so that the filter 14 emits light in a state where the filter 14 covers the strobe light emitting section 13 correctly.

Light emission of the strobe light emitting section 13 is 100 μsec.
Since the flash is as short as c, even if the filter 14 keeps moving, the light emission can be controlled at a momentary moment while capturing the state shown in FIG. 8B. Therefore, the movement of the filter 14 itself does not require very high-precision control.

Also, the force of the spring is easy to vary,
If the balance between the forces of the two springs 16 and 18 is also properly adjusted at the time of manufacture, the delay time t ₁ read at the timing of step S3 in the flowchart of FIG.
Is used and corrected correctly.

On the other hand, if it is determined in step S2 that the electronic flash is not in the flash off mode, it is not necessary to spend time and energy on reading from the EEPROM 29 and controlling the plunger 17b unless the electronic flash is in the flash off mode. Absent. Therefore, the process proceeds to step S10, and the distance measurement is performed using the normal flash emission as the auxiliary light without operating the filter 14. Next, in step S11, after photographing is performed, the process exits this routine.

As described above, according to the first embodiment, it is possible to provide a camera capable of correctly measuring a distance even in a place where strobe light emission is prohibited.

Since the light of the strobe is powerful and can be used in a wide range, it can easily cope with multi-AF for measuring a large number of points on the screen, and adjusts the relationship between the switch on time and the light emission time. Therefore, accurate irradiation is possible even with a simple mechanism.

Next, a second embodiment of the present invention will be described.

FIGS. 9A and 9B are views for explaining a second embodiment of the present invention, in which FIG. 9A shows the configuration of a strobe light emitting section, and FIG. 9B shows the strobe light emission of FIG. FIG. 3C is a cross-sectional view illustrating a first state of the camera to which the unit is applied, FIG. 4C is a cross-sectional view illustrating a second state of the camera to which the strobe light emitting unit of FIG. 9 is a timing chart illustrating an operation according to the second exemplary embodiment.

As shown in FIG. 9A, the second embodiment is different from the first embodiment in that the filter is moved up and down by the force of a plunger and a spring. The strobe light irradiation has been changed.

That is, the strobe light-emitting portion meshes with a xenon tube 40 which is a flash tube, a reflecting member 41 rotatable around the xenon tube 40, and a gear portion provided on the reflecting member 41. It is constituted by a gear 42 and a motor 43 for rotating the gear 42 in a predetermined direction.

The reflecting member 41 has an opening 41a.
Is provided. FIG. 9 shows the opening 41a.
As shown in (b), a lens 44 is attached. Further, a position detection switch 19 is provided in the vicinity of the reflection member 41 in order to irradiate the light correctly in front of the camera.

When the motor 43 is driven, the reflecting member 41 is connected to the xenon tube 40 via the gear 42.
Is rotated in the illustrated arrow E direction. At this time, the rotation of the reflection member 41 is monitored by the switch 19, so that the distance measurement light emission through the opening 41a and the lens 44 as shown in FIG. c) Two types of light projection methods, ie, normal light emission with a large opening, can be selected by effectively using the reflection of the reflection member 41 as shown in (c).

Here, if the lens 44 is configured to cut visible light and transmit infrared light, the auxiliary light during AF becomes invisible, as in the first embodiment whitened in FIG.

In the first state shown in FIG. 9B, the light from the large opening of the reflecting member 41 is projected toward the upper wall of the camera body, so that it does not leak to the outside of the camera 10. Absent.

In the second state shown in FIG. 9C, the light passing through the small lens 44 is emitted toward the lower side of the camera body, and this light also exits the camera 10. Never.

In the second embodiment, the reflecting member 41
During the rotation of, in the second state shown in FIG. 9C, the lens is pressed by the lens 44 to generate a timing signal.
Therefore, if light emission control is performed when the position detection switch 19 is turned on, normal strobe light emission is performed.

The second state shown in FIG. 9C is set to a normal state, and in the strobe off mode, the state shown in FIG.
As shown in (b), by rotating the reflection member 41,
Although infrared auxiliary light is irradiated by the lens 44, to be projected in the correct position, the position detecting switch 19 is turned off, projection control is performed after a delay time t _1.

At this time, energy for strobe projection is not required at the time of exposure, and light is emitted through a small lens 44, so it is better to emit light more. Therefore, FIG.
As shown in the timing chart of (d), the light emission time t _A2 is set longer than the light emission time t _A1 in the normal mode (other than the flash off mode).

As described above, according to the second embodiment, in the strobe-off mode, not only the auxiliary light is made infrared but also the irradiation angle is narrowed, so that the irradiation mode more suitable for the situation is achieved. Become. That is, in a shooting scene as shown in FIG. 5, it is possible to use the auxiliary light only for the subject 37 and not to irradiate the painting 35.

Next, a third embodiment of the present invention will be described.

FIG. 10 is a diagram showing a configuration of a strobe light emitting section according to a third embodiment of the present invention.

This third embodiment is an application of the second embodiment described above. That is, FIG.
As shown in (a) and (b), cellophane 48 of various colors is wound around a transparent rotating member 47 provided with a gear 47a and a projection 47b. And the above gear 4
7a is rotationally driven in a predetermined direction by a motor 43 via a gear 42, so that the rotary member 47 can be rotationally driven in the direction of arrow F in FIG. 10B.

The axis of the rotary member 47 is such that the xenon tube 40 is held between holders 49a and 49b as shown in FIG. Therefore, if this is mounted on a camera 10 as shown in FIG. 9, a strobe capable of projecting light of various colors can be constituted by rotating the motor 43. Of course, in order to perform normal light emission, the cellophane 48 is provided with a colorless and transparent portion, but is not limited thereto.

Further, in the third embodiment, non-contact switches are used to prevent deterioration over time. That is,
The projection 47a provided on the rotating member 47 blocks the optical path of the photointerrupter composed of the light emitting diode 51 and the photodiode 52 so that the position can be detected by the photointerrupter (PI) detection circuit 53 based on the presence or absence of light incidence. ing.

Therefore, as shown in FIG. 11, it is possible to select the color of the strobe.

FIG. 11A is an external view of a camera to which the strobe light emitting section having the above-described configuration is applied. Camera 10
Is provided with a strobe light emitting section 55 capable of selecting a color. Also, on the upper surface of the camera 10, FIG.
A liquid crystal display section 56 as shown in FIG.

Then, as shown in FIG.
When the user 57 operates the control switch 28 of the camera 10, the color of the strobe can be selected. For example, as shown in FIG. 11B, a setting result by the operation is displayed on a liquid crystal (LCD) display unit 56. In this case, in addition to the display of the number of frames of the film and the date, a normal strobe, a sepia tone, a stained glass tone, and a result selected in the selected segment can be understood.

Next, the photographing operation of the camera according to the third embodiment will be described with reference to the flowchart of FIG.

When the photographing sequence is started, first, in step S21, the motor 43 is turned on, and the rotating member 47 is driven to rotate around the xenon tube 40. Then
In step S22, the presence or absence of an infrared filter is determined. Here, if the infrared filter is set, the process proceeds to step S23, where light emission and distance measurement through the infrared filter are performed at the time of distance measurement.

The timing at which the filter becomes an infrared filter is determined after a lapse of a predetermined time from the signal of the photo-interrupter, and adjustment is made in advance at the time of manufacturing the camera, taking into account the deviation of the filter. Note that the above-mentioned predetermined time is EEP
It is stored in the ROM 29.

Thereafter, focusing is performed in step S24. Next, in step S25, the mode setting by the user 57 is determined. Here, if it is a normal flash mode (normal mode), step S2
The process proceeds to step 6, where the transmission portion is detected. Then, after detecting the timing of the colorless and transparent transmitting portion, in step S27, the strobe light emitting portion 55 emits light for the time t _H1 to perform photographing. Then, the process exits the routine.

On the other hand, if it is determined in step S25 that the mode is not the normal mode, then step S2 is executed.
At 8, it is determined whether the user 57 has selected the sepia mode. Here, when the sepia mode is selected, the process shifts to step S29 to detect a brown filter. Then, when the brown filter is detected, the process proceeds to step S30, light emission is performed at the time of the brown filter, and the subject is made to have a sepia tone as shown in FIG.

However, since the color of the background to which the strobe light does not reach cannot be controlled, color tone control information may be written on the film in a camera capable of magnetically writing on the film. In step S30, the light emission time t _H2 is longer than the light emission time t _H1 by the amount of the filter (see FIG. 14).

When the mode is neither the normal mode nor the sepia mode, the mode is the stained glass mode.
By the operation after step S31, red, blue, and yellow filters are detected as described later. In the stained glass mode, the rotating member 47 is rotated by driving the motor 43, and multiple exposure is performed while changing the irradiation color to red, blue, and yellow.

That is, when a red filter is detected in step S31, light is emitted through the red filter in the following step S32, and photographing is performed. Then, when the blue filter is detected in step S33, after being shifted by the light emission time t ₂ in step S34, photographing is made of emitting through the blue filter is performed in step S35. Further, when the yellow filter is detected at step S36, after being shifted by the light emission time t ₃ at step S37, imaging is performed by emission through a yellow filter is made in step S38.

The motor 43 for rotating the rotating member 47 is
Of course, if the rotation speed of the motor 43 is high, the above-described color switching may be performed during one exposure. However, if the light is emitted at the same timing, the same place of the subject is repeatedly irradiated with different colors, and the stained glass effect cannot be obtained. Therefore, it is necessary to shift the light emission time to t ₂ and t ₃ .

With this configuration, FIG.
As shown in (b), the subject can be illuminated with light of various colors to obtain a photograph that has the effect of being exposed to light passing through stained glass in a church.

Instead of a filter having a structure in which cellophane is wound around the above-mentioned rotating member, for example, a filter whose color is changed in a laminated manner may be arranged in front of the strobe.

In the third embodiment, the colors of the filters are changed in the order of red → blue → yellow. However, the order of the colors can be changed, and the order of light emission can be changed. . In addition, various effects can be obtained by changing the amount of emitted light each time.

For example, in the stained glass mode, more detailed modes such as the cathedral mode in Chartres and the Notre Dame in Paris mode may be set, and the color composition may be changed according to the selection. That is, in the mode of the cathedral of Chartres, blue is emphasized, and in the mode of Notre Dame, purple is named after the rose window. With the configuration as shown in FIG. 10, it can be easily achieved only by devising a program.

It is also possible to check the light components of the shooting scene and shoot with light emission corresponding to the components.

FIG. 15 is a flowchart for explaining the operation of photographing according to such light components.

First, in step S41, it is detected that the light is artificial light. Next, in step S42,
It is determined whether or not the artificial light detected in step S41 is a fluorescent light. Here, for example, if the infrared component is small, it is considered that the scene is illuminated by a fluorescent lamp, so the flow shifts to step S43 to emit red light to suppress the bluish color cast. On the other hand, when the irradiation is not performed by the fluorescent lamp, the process shifts to step S44 to perform light emission and photographing in the normal (normal) mode.

Further, there is a “red-eye phenomenon” in which the eyes appear red because the pupils are open due to the strobe irradiation at the time of photographing. By performing pre-emission before photographing, the pupils of the subject are made smaller. Techniques for performing main light emission and photographing are known.

This technique has a disadvantage that it is easy to mistake the main light emission from the pre-light emission. Therefore, as shown in FIG.
The pre-emission for red-eye reduction may change the color of the strobe. In this case, if the motor is driven to emit light each time the color of the filter changes, and a color change like a rainbow is performed, the camera becomes more enjoyable.

Further, as an application example of the present invention, the following embodiments can be considered.

In FIG. 17A, for example, the camera 10
Light emitting diode for self-timer (LE
D) 60 is provided. This camera has the third
When the embodiment is applied, it is possible to eliminate the self-timer LED and achieve the same effect by using the light of the strobe.

That is, as shown in FIG. 17B, the self-timer strobe light emission color is changed and notified by selecting a transmission filter by rotating the motor.

The photographing operation in the self-timer mode will be described with reference to the flowchart of FIG.

First, in step S51, initialization (n = 0) is performed to emit light, and in step S52, the motor is driven to rotate. Then, the timer is counted at step S53, waits at step S54 until t = t _s.

Next, in step S55, n = 5
Is determined. Here, if n = 5, the process proceeds to step S56, and it is determined whether or not red emission is detected. When the red light emission is detected, the process proceeds to step S57, where the light emission is performed.
In step S58, n is incremented. afterwards,
The process moves to step S53.

On the other hand, if n = 5 in step S55, the flow shifts to step S59 to perform photographing using a self-timer.

As described above, in the flowchart as shown in FIG. 18, if the strobe is controlled to emit light, the red strobe flashes for the time of the self-timer. Then, the user can recognize that the camera is in the self mode and can predict the photographing timing.

Further, the strobe light emitting portion having the structure as shown in FIG. 9 can be improved to be configured as shown in FIG.

That is, in FIG. 19, an opening 61 is formed in the rear portion of the main body of the camera 10 at a position where the opening of the reflection member 41 faces the finder eyepiece.
1, a color filter 62 is provided.

As described above, if the strobe light can be weakly emitted at the position facing the finder eyepiece, the light passing through the opening 61 near the eyes of the photographer 57 can be confirmed. In addition, by attaching the color filter 62,
It is easy on the eyes and can be replaced with a warning display according to the function. For example, such an application is effective when the reliability of the distance measurement result is low, when flash emission is required, or when the battery voltage is low, and the like.

Further, in recent years, it is also applicable as a light source for a sensor for detecting a user's line of sight. Further, instead of merely passing through the opening, light may be guided to the vicinity of the eyepiece by an optical fiber or the like. In this case, it is possible to effectively use the light emission characteristic of the strobe light, which is strong and has a wide irradiation range.

As described above, by applying the present invention, a design having a cost merit can be realized by also using the light emitting function of the camera.

According to the above embodiment of the present invention,
The following configuration can be obtained.

(1) An exposure control strobe for emitting light from a discharge tube, a filter member for extracting a specific wavelength component of the strobe light ahead of the irradiation direction of the strobe, or an optical device for condensing and projecting the strobe light. In a camera capable of switching between a first state in which a member is disposed and a second state in which light emission is performed using all wavelengths of the discharge tube without disposing the filter member or the optical member, And a second state, the driving means being controllable by sequentially switching the states, a detection means for outputting a signal for detecting a driving position by the driving means, and an emission timing based on an output timing of the detection means and predetermined data. And a control means for determining.

(2) The camera according to (1), wherein the predetermined data is data stored in a memory when the camera is manufactured.

(3) It further comprises distance measuring means for detecting the distance to the subject, and mode selecting means for selectively switching the operation sequence of the camera, wherein the control means outputs the result of the selection by the mode selecting means. The camera according to (1), wherein the light emission timing is switched based on the timing.

(4) In a camera having an exposure control strobe, a filter member provided in front of the strobe irradiator and a transmission color of the filter member are switched prior to photographing using the strobe. Control means for controlling the light emission of the strobe light a plurality of times while controlling.

(5) The camera according to (4), wherein the strobe uses infrared light as the auxiliary light for distance measurement in the off mode.

(6) The camera according to (4), wherein the control means changes the emission time when the emission color of the strobe is changed.

(7) The camera according to (4), wherein the strobe has a pre-emission color different from a main emission color.

[0107]

As described above, according to the present invention, the application field of the strobe device can be diversified and the camera can be substituted for other light emitting elements by effectively utilizing the wide spectral characteristics of the strobe light and the flash light emission. In addition to the above, it is possible to provide a camera having a strobe which has an added value as a color light generator and has a space advantage and a cost advantage while adding attractiveness to a product.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention;
FIG. 2A is a perspective view of the appearance of the camera, and FIG. 2B is a diagram illustrating a configuration of a main part of the camera in FIG.

2A is a diagram showing a positional relationship between the optical system 1 and the lamp 2, FIG. 2B is a diagram showing a projected image in the positional relationship shown in FIG. 2A, and FIG. FIG. 3D is a diagram showing a positional relationship between the optical system 1 and the strobe 4, and FIG. 4D is a diagram showing a projected image in the positional relationship shown in FIG.

FIG. 3 is a diagram illustrating a distance measuring device 12 according to the first embodiment.

4A and 4B show what A / D conversion values each sensor outputs. FIG. 4A is a characteristic diagram for a low-contrast subject, and FIG. 4B is a characteristic diagram for a high-contrast subject. It is a characteristic diagram.

FIG. 5 is a diagram illustrating an example of a shooting scene in a case where irradiation of auxiliary light by a strobe is not permitted;

FIG. 6 is a flowchart illustrating a photographing operation of the camera according to the first embodiment.

FIG. 7 is a timing chart illustrating a photographing operation of the camera according to the first embodiment.

8A is a diagram illustrating a state in which visible light leaks due to a shift of the strobe light emitting unit 13 and the filter 14, and FIG. 8B is a diagram illustrating a state in which the filter 14 covers the strobe light emitting unit 13; .

FIGS. 9A and 9B are diagrams for explaining a second embodiment of the present invention, wherein FIG. 9A is a diagram showing a configuration of a strobe light emitting unit;
(B) is a cross-sectional view showing a first state of the camera to which the strobe light emitting portion of FIG. (A) is applied, and (c) is a second state of the camera to which the strobe light emitting portion of FIG. And FIG. 9D is a timing chart for explaining the operation according to the second embodiment.

FIG. 10 is a diagram showing a configuration of a strobe light emitting unit according to a third embodiment of the present invention.

11A is an external view of a camera to which the strobe light emitting unit having the configuration shown in FIG. 10 is applied, FIG. 11B is a diagram showing a daily proportion of the liquid crystal display unit 56 of FIG. FIG. 3A is a diagram illustrating an operation example of the camera in FIG.

FIG. 12 is a flowchart illustrating a shooting operation of a camera according to the third embodiment.

13A is a diagram illustrating an example of a subject image in a sepia mode, and FIG. 13B is a diagram illustrating an example of a subject image in a stained glass mode.

FIG. 14 is a diagram showing a relationship between a light emission time t _H1 and a light emission time t _H2 .

FIG. 15 is a flowchart illustrating an imaging operation according to a light component.

FIG. 16 is a diagram showing an example of pre-emission and main emission for red-eye reduction.

17A is a diagram showing an example of a camera in which a self-timer light emitting diode 60 is provided on the front surface of the main body, and FIG. 17B is a diagram in which the self-timer LED is abolished and the strobe light is used. FIG. 3 is a diagram illustrating an example of a camera.

FIG. 18 is a flowchart illustrating a shooting operation in a self-timer mode.

FIG. 19 is a cross-sectional view of a camera equipped with a further improved strobe light emitting unit.

[Explanation of symbols]

 Reference Signs List 1 optical system, 2 lamps, 3, 5 projected image, 4 strobe, 10 camera, 11 photographic lens, 12 distance measuring optical system (ranging device), 13 strobe light emitting unit, 14 filter, 14a axis, 14b lever unit , 16, 18 spring, 17 solenoid, 17a iron core, 17b plunger, 19 position detection switch, 21 driver, 22 control circuit (CPU), 23 booster circuit, 24 capacitor, 25 trigger circuit, 28 control switch, 29 EEPROM, 30, 37 subject, 31a, 31b line sensor, 32 A / D converter, 33 correlation operation unit, 35 painting, 36 photographer.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 15/05 G03B 3/00 A F term (Reference) 2H002 AB01 AB04 CD00 FB28 FB38 FB51 FB71 FB84 GA04 GA17 GA31 GA54 2H011 AA01 BA01 BB01 DA07 DA08 2H051 AA02 BB10 CC03 CC11 CC14 CC17 CC19 EA22 EA28 GB17 2H053 AA05 AB00 AB01 AB03 AD00 BA25 BA82 CA08 CA12 CA14 CA41 DA08 DA09

Claims (3)

[Claims] 1. A camera having an exposure control strobe that emits light from a discharge tube, wherein a filter member for extracting a specific wavelength component of the strobe light or a strobe light is condensed and projected ahead of the strobe in the irradiation direction. A first state in which an optical member to be arranged is arranged;
In a camera capable of switching between a second state in which light emission is performed using all wavelengths of the discharge tube without disposing the filter member or the optical member, the first state and the second state may be switched. A drive unit that can be controlled by sequentially switching, a detection unit that outputs a signal for detecting a drive position of the drive unit, a control that determines a light emission timing of the exposure control strobe from an output timing of the detection unit and predetermined data. Means, and a camera. 2. The exposure control device according to claim 1, further comprising: a distance measuring unit that detects a distance to a subject; and a mode selection unit that switches an operation sequence of the camera, based on a selection result of the mode selection unit. The camera according to claim 1, wherein the camera is switched. 3. A camera having an exposure control strobe, comprising: a filter member provided on a front surface of an irradiation unit of the strobe and capable of switching a plurality of transmission colors; Control means for switching control of the transmission color of the filter member and controlling emission of the strobe light a plurality of times.