JPH05100294A - Flash illuminating system, flash illuminating device and camera with flash illuminating device - Google Patents

Abstract

PURPOSE:To obtain a flash illuminating device capable of flash photographing plural objects which are in different object distances with appropriate exposure. CONSTITUTION:This camera is provided with a flash means 102 consisting of a light emitting part 100 which emits flash light and a light shielding part 101 which almost perfectly shields the flash light of the light emitting part 100 according to a light shielding signal; a photometry means 103 which performs the photometry of light which is emitted from the flash means 102 and reflected on a field; and output means 104 which outputs the light shielding signal to the light shielding part 101 based on the result of photometry by the means 103.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flash lighting system, a flash lighting device, and a camera equipped with the flash lighting device.
In particular, the field is divided and illuminated.

[0002]

2. Description of the Related Art Conventionally, when the illuminance of an object is insufficient at the time of photographing, a flash illumination device (hereinafter, referred to as a strobe) is caused to emit light to supplement the illuminance of the object. The flash light from this strobe can illuminate the field almost uniformly, and the irradiation amount of the flash light can be adjusted by TTL light control. Therefore, if the shooting distance to all subjects in the scene is the same,
Flash photography can be performed with proper exposure.

However, since the strobe illuminates the field evenly, if there are a plurality of objects with different shooting distances in the field as shown in FIG. 11, all the objects should be flash-photographed to the proper exposure. I can't. That is, the subject in front is overexposed and the subject in the rear is underexposed. In order to solve this problem, there has been proposed a strobe provided with a plurality of flash light emitting parts and adjusting the irradiation amount of each light emitting part according to the shooting distance to the subject (for example, see Japanese Patent Laid-Open No. 1-108538). ).

[0004]

However, since the above-mentioned strobe has a plurality of flash light emitting parts, the mechanical structure is complicated and each light emitting part must be interlocked when the irradiation angle is changed. However, there is a problem that the mechanism becomes complicated.

Further, each light emitting unit to which a high voltage is applied must be controlled by the drive unit on the basis of information from a plurality of divided photometry units provided corresponding to the plurality of light emitting units. There is also a problem that the circuit becomes complicated.

An object of the present invention is to provide a flash lighting device capable of flash shooting a plurality of subjects having different shooting distances with proper exposure.

[0007]

The invention of claim 1 will be described with reference to FIG. 1 (a), which is a correspondence diagram of claims. The invention of claim 1 is based on a light emitting portion 100 emitting a flash light and a light shielding signal. A flash unit 102 including a light-shielding unit 101 that almost completely blocks the flash of the light-emitting unit 100, a photometric unit 103 that measures the light emitted from the flash unit 102 and reflected in the field, and a photometric unit 103 of the photometric unit 103. Control means 104 for outputting a light-shielding signal to the light-shielding portion 101 based on the photometric result.
And, thereby achieving the above object. The invention of claim 2 will be described with reference to FIG. 1 (b) which is a claim correspondence diagram, and the flashing means 2 of the flashing illumination system of claim 2 will be described.
02 is divided into a plurality of emission areas corresponding to a plurality of irradiation areas of the object scene, and the light emitting unit 20 is provided for each of these emission areas.
Divided light-shielding portions 201a, 2 which almost completely shield 0 flash light
, And the photometry means 203 includes divided photometry units 203a, 203b, ... For dividing the field into a plurality of photometry areas and performing photometry for each photometry area, and the control means 204.
Is divided into light-shielding portions 201a, 201b, ...
Output a light-shielding signal to. Further, in the flash illumination system of the third aspect, the divided shape of the plurality of emission areas of the flash means 202A and the divided shape of the plurality of photometry areas of the photometry means 203A are substantially the same shape. FIG. 1 (a), which is a claim correspondence diagram
When the invention according to claim 4 is described in association with the invention, the invention according to claim 4 is such that the light emitting portion 300 that emits a flash light and the light shielding portion 30 that almost completely shields the flash light of the light emitting portion 300 according to a light shielding signal.
1 and a photometric means 3 for photometrically measuring the light emitted from the flash means 302 and reflected by the object scene.
03 and control means 304 for outputting a light-shielding signal to the light-shielding portion 301 based on the photometric result of the photometric means 303, thereby achieving the above object. The invention of claim 5 will be described with reference to FIG. 1 (b) which is a claim correspondence diagram. The flash means 402 of the flash illumination device of claim 5 emits a plurality of light beams corresponding to a plurality of irradiation regions of the object scene. The divided light-shielding portions 401a, 401b, ...
., And the photometry means 403 divides the object field into a plurality of photometry areas and performs photometry for each photometry area 403.
., and the control means 404 outputs a light-shielding signal to each of the divided light-shielding units 401a, 401b, ... Based on the photometric result of each of the divided light-measuring units 403a, 403b ,. In the flash lighting device according to claim 6, the flash means 4 is provided.
02A, the divided shape of the plurality of emission areas, and the photometric means 403.
The divided shape of the plurality of photometric areas of A was made substantially the same shape. The invention of claim 7 will be described with reference to FIG. 1A which is a claim correspondence diagram. According to the invention of claim 7, the light emitting portion 500 for emitting a flash light and the flash light of the light emitting portion 500 according to a light blocking signal are almost completely removed. A camera provided with a flash illumination device 502 including a light blocking portion 501 for blocking light, and a photometry means 503 for photometry of light emitted from the flash illumination device 502 and reflected in a field, and a photometry result of the photometry means 503. Control means 504 for outputting a shading signal to the shading part 501 based on
And to achieve the above object. The invention of claim 8 will be described with reference to FIG. 1 (b) which is a claim correspondence diagram.
Is divided into a plurality of emission areas corresponding to a plurality of irradiation areas of the object scene, and the divided light-shielding portions 601a and 601 for substantially completely blocking the flash light of the light emitting section 600 for each of these emission areas.
, and the photometry means 603 has divided photometry units 603a, 603b, ..., which divide the field into a plurality of photometry areas and perform photometry for each photometry area, and the control means 604 has
A light-shielding signal is output to each of the divided light-shielding units 601a, 601b, ... Based on the photometry result of each of the divided light-measuring units 603a, 603b ,. In the camera provided with the flash illumination device according to claim 9, the divided shape of the plurality of emission regions of the flash illumination device 602A and the divided shape of the plurality of photometric regions of the photometric means 603A have substantially the same shape.

[0008]

According to the first aspect, the light shielding portion 101 of the flash means 102 is provided.
However, the flash light of the light emitting unit 100 is almost completely blocked according to the light blocking signal of the control unit 104 issued based on the photometric result of the photometric unit 103. In claim 2, the flash means 202
The divided light-shielding units 201a, 201b, ... Of the light-emitting unit 200 emit a flash of light in accordance with the light-shielding signal of the control unit 204 issued based on the photometric results of the divided light-measuring units 203a, 203b ,. Shade almost completely. In the fourth aspect, the light-shielding portion 301 of the flash means 302 is emitted from the control means 30 based on the photometric result of the photometric means 303.
In accordance with the light-shielding signal of No. 4, the flash of the light emitting unit 300 is almost completely shielded. .. of the flash means 402, the light-shielding signal of the control means 404 issued based on the photometric result of the respective divided photometry portions 403a, 403b ,. Accordingly, the flash of the light emitting unit 400 is almost completely blocked. In claim 7, the light shielding unit 501 of the flash illumination device 502 is the photometric unit 5
In accordance with the light-shielding signal of the control means 504 issued based on the photometric result of 03, the flash of the light emitting portion 500 is almost completely shielded. In claim 8, each of the divided light-shielding portions 601a, 601b, ... Of the flashlight illuminator 602 is shielded by the control means 604 based on the result of photometry by each of the divided light-measuring portions 603a, 603b ,. According to the signal, the flash of the light emitting unit 600 is almost completely blocked.

[0009]

EXAMPLE FIG. 2 is an external view of a strobe according to an example. This strobe 1 is provided with a light emitting section 2 composed of a flash ball 21 and a mirror 22, a light blocking section 3 for blocking the flash of light from the light emitting section 2, a Fresnel lens section 4 for diffusing the flash of the light emitting section 2, and irradiation of the flash. A light metering unit 5 that measures the reflected light from the subject, a lens unit 6 that guides the reflected light from the subject to the light metering unit 5, and a light emission control unit 7 (not shown) that controls the light emission of the light emitting unit 2. Then, the mounting leg 1a is inserted into the accessory shoe (not shown) of the camera to lock the lock nut 1.
It can be fixed by b and attached to the camera. Transmission and reception of signals such as control commands and data to and from the camera are carried out through the contacts provided on the accessory shoe and the mounting leg 1a. The light shielding unit 3 is arranged between the light emitting unit 2 and the Fresnel lens unit 4. Further, the lens portion 6 and the photometric portion 5 having a silicon photo diode (SPD) surface are provided closer to the camera than the light emitting portion 2, so that an image closer to the image taken by the camera is obtained. can get.

Here, it is ideal that the light-shielding portion 3 completely shields the flash light of the light-emitting portion 2 so as not to leak to the outside of the strobe 1. However, if the light-shielding portion 3 slightly leaks, there is no practical problem. This degree is set such that the exposure amount of the irradiation area where the flash light emission is shielded falls within an allowable range of an appropriate value.

FIG. 3 is a diagram for explaining the outline of the strobe 1 shown in FIG. The light emission control unit 7 that has received the light emission command from the camera transmits the command to the light emission unit 2, and the light emission unit 2 emits a flash. The flash of light illuminates the subject and increases the illuminance. The lens unit 6 projects an object on the SPD surface which is the photometric unit 5, and the SPD surface divided into a plurality of areas measures the reflected light of the object in each area. Here, it is assumed that the SP surface of the photometric unit 5 is divided into nine regions 5a to 5i and photometry is performed for each region, and the light shielding unit 3 corresponds to each region 5a to 5i of the photometric unit 5. It is divided into nine areas 3a to 3i, and the flash light is shielded for each area. Each SPD area 5a-5i
When a certain exposure amount (illuminance × time) is reached, the shading command corresponds to each of the SPD areas 5a to 5i.
To 3i. Each of the light-shielding regions 3a to 3i shields a flash of light by a light-shielding command, so that the exposure amount of the subject in the light-shielded direction is prevented from being overwritten.

This method of shielding the light emission has the advantage that the exposure amount can be adjusted with certainty and the exposure amount adjustment accuracy is high. Further, the subject in the direction of the region where the exposure amount has not reached a certain amount is not shielded from light but is directly irradiated with the flash light.

In addition to the above, the control of the exposure amount is performed by measuring the exposure amount by the TTL method in the camera. This T
The TL method is a method in which the amount of exposure on the film surface is measured, and when a certain amount of exposure is reached, a light emission stop command is sent to the light emission control unit 7. As a result, the total exposure amount is adjusted.

Further, when the present invention is applied to a strobe whose irradiation angle can be changed, the lens unit is moved in accordance with the irradiation angle.
It is only necessary that the light is exposed to the light metering area for the exposure range.

In this embodiment, the photometric unit 5 is provided on the strobe 1, but the photometric unit 5 may be provided on the camera body to perform TTL photometry.

The details of the light shielding portion are shown in FIG. As described above, the light shielding unit 3 is divided into nine areas 3a to 3i, and each of the areas 3a to 3i is each area 5a of the corresponding photometric unit 5.
The light-shielding operation is performed according to the light-shielding command based on the photometry result of 5i. Each of the regions 3a to 3i of the light shielding unit 3 includes a polarizing plate 31,
Transparent electrode 32, bulk type electro-optic modulator (PLZT)
33, a transparent electrode 34, and an analyzer plate 35.
Although the configuration of the region 3c is illustrated in the drawing, the other regions have the same configuration. Further, the deflection plate 31 faces the light emitting unit 2. A voltage is applied from a power source 36 via a switch 37 to both surfaces of the bulk type electro-optical modulator (PLZT) 33.

FIG. 5 is a diagram showing the principle of light shielding by PLZT (PbLa (ZrTi) O ₃ ) which is the bulk type electro-optical modulator of this embodiment. The PLZT 33 has the property that the refractive index changes when a voltage is applied, the optical phase difference of the incident light changes, and the output light is polarized. Therefore,
The polarization axes of the polarizing plate 31 and the analysis plate 35 are made to coincide with each other,
The PLZT incident light linearly polarized by the polarizing plate 31 is shown in FIG.
When a voltage is applied to the PLZT 33 to change the optical phase difference by π as shown in (a), the output light from the PLZT 33 becomes linearly polarized light in a direction perpendicular to the incident light, and the light is shielded by the analyzer plate 35. Is possible. On the other hand, FIG.
As shown in (b), when no voltage is applied to the PLZT 33, the optical phase difference of the output light does not change, so the light passes through the analyzer plate 35. In this embodiment, a voltage is applied to the PLZT 33 in each of the regions 3a to 3i of the light shielding unit 3 when the amount of exposure in each of the regions 5a to 5i of the photometric unit 5 reaches a certain amount.

In the above embodiment, PLZT was used as the bulk type electro-optic modulator 33, but KH ₂ PO ₄ , N was used.
H ₄ H ₂ PO ₄ , Bi ₁₂ SiO _{20 and the} like also operate in the same manner with the same configuration, and produce the same effect.

In the above embodiment, as shown in FIG.
Although the voltage is applied to the bulk-type electro-optical modulator 33 in parallel with the traveling direction of light, it may be applied in the direction perpendicular to the light. In that case, a polarizing plate and a bulk-type electro-optical modulator,
A transparent electrode between the bulk-type electro-optical modulator and the analyzer plate is unnecessary. The bulk type electro-optic modulator used in such a structure includes lithium niobate (LiNbO ₃ ), L
iTaO ₃ , Ba ₂ NaNb ₅ O ₁₅ , SrxBa ₁ -xNb
₂ O ₆ , PbO · xNbO ₃ and the like. The symbol x is an arbitrary number.

FIG. 6 is a sectional view of a light-shielding portion using liquid crystal instead of the bulk type electro-optical modulator. Each of the regions 3Aa to 3Ai of the light shielding portion 3A includes a polarizing plate 31A and a transparent electrode 32.
A, a liquid crystal 33A, a transparent electrode 34A, and an analyzer plate 35A. The liquid crystal 33A is preferably a twisted nematic liquid crystal. Note that, although the configuration of the region 3Ac is illustrated in the drawing, the other regions have the same configuration. Also, the deflection plate 3
1A faces the light emitting unit 2. A voltage is applied to both surfaces of the liquid crystal 33A from the power supply 36A through the switch 37.

FIG. 7 is a diagram showing the light-shielding principle when a twisted nematic liquid crystal is used. The twisted nematic liquid crystal 33A has a property of rotating the plane of polarization. Therefore, when the polarizing plate 31A and the analyzing plate 35A are arranged so as to be rotated by 90 ° and the nematic liquid crystal is twisted by 90 °, as shown in FIG. 7 (b), when no voltage is applied to the twisted nematic liquid crystal 33A, The incident light linearly polarized after passing through the polarizing plate 31A is rotated and output as linearly polarized light in a direction perpendicular to the incident light. Therefore, the analyzer plate 35
A can be transmitted. On the other hand, as shown in FIG. 7A, when a voltage is applied to the twisted nematic liquid crystal 33A, the liquid crystal 33A is aligned in a direction perpendicular to the polarizing plate 31A and the light detecting plate 35A due to the electric field, so that the liquid crystal cannot rotate. In addition, it cannot pass through the analyzer plate 35A.

In the above embodiment, the twisted nematic type liquid crystal has been described as an example. However, similar effects can be obtained with other types of liquid crystal as long as light can be blocked and transmitted by applying and releasing a voltage.

FIG. 8 is a sectional view of a light-shielding portion using an electrochromic display (hereinafter referred to as ECD) instead of the bulk type electro-optical modulator. As disclosed in Japanese Utility Model Application Laid-Open No. 2-138719, ECD has a property of being colored when a voltage is applied, and this property is utilized for strobe light control. Regions 3Ba to 3Bi of the light shielding portion 3B
Is a transparent electrode 32B, an EC layer 38, a solid electrolyte layer 39,
It is composed of a transparent electrode 34B. In this example, the EC
The layer 38 is a WO ₃ layer, and the solid electrolyte layer 39 is a Ti ₂ O ₅ layer 3.
9a and the Ir ₂ O ₃ / SnO ₂ layer 39b, the WO ₃ layer 38, the Ti ₂ O ₅ layer 39a, and the Ir ₂ O ₃ / SnO ₂ layer from the incident light side.
Align with layer 39b. For the solid electrolyte layer 39, SiO ₂ , Cr ₂ O ₃ or the like can be used in addition to the above. Although the configuration of the region 3Bc is shown in the figure, the other regions are similarly configured. In addition, the transparent electrode 32B faces the light emitting unit 2.
The power source 3 is provided on both sides of the EC layer 38 and the solid electrolyte layer 39.
A voltage is applied from 6B through the switch 37.

When a voltage is applied between the transparent electrodes 32B-34B with such a structure, the transparent electrodes 32B-34B are colored by an oxidation-reduction reaction, whereby the flash light can be shielded.

Next, the light blocking control of each region of the light blocking unit 3 performed based on the photometric result of each region of the photometric unit 5 will be described. FIG. 9 shows the photometric circuit 8 of each area 5a to 5i of the photometric unit 5.
And the light-shielding circuit 9 in each of the regions 3a to 3i of the light-shielding portion 3.
The connection between one photometric circuit 8 in the nine regions 5a to 5i of the photometric unit 5 and one light shielding circuit 9 in the nine regions 3a to 3i of the light shielding unit 3 is shown, but between other circuits. The connection is the same, and the description thereof will be omitted. Further, in the following description, the above-described light-shielding portion 3 will be described as an example, but the same applies to the light-shielding portions 3A and 3B, and a description thereof will be omitted. A circuit for generating a signal for stopping the light emission when the exposure amount reaches a certain amount is disclosed in Japanese Patent Publication No. 59-6474. In this embodiment, the flash light shield signal is generated as follows. When the SPD is irradiated with light, the light detection circuit 1
A charge of 0 is stored in the capacitor C1. When the terminal voltage of the capacitor C1 rises due to charge accumulation and becomes larger than the reference voltage E2 of the comparison circuit 11, the comparison circuit 1
A positive voltage flash light shielding signal is output from 1 to the light shielding circuit 9 of the light shielding unit 3. Here, the reference voltage E2 determines the exposure amount. The terminals A and B are connected to the photometry circuit 8 in another photometry section area, and the voltage E1 is supplied from the power supply circuit 12.

The light shielding circuit 9 is a circuit for applying the DC voltage E3 of the power supply circuit 13 to the light shielding device 14 via the switch S1 and the thyristor Q1. Here, the light shielding device 14 is a light shielding member in each region of the light shielding unit 3 such as the bulk electro-optical modulator 33 and the liquid crystal 33A described above. The switch S1 is a switch that stops the conduction of the thyristor Q1 after the light emission of the light emitting unit 2 is completed. The method of stopping the conduction of the thyristor Q1 may be a method of controlling the power supply voltage E3 of the power supply circuit 13 with a MOS-FET or the like by using the voltage generated when the flash light is emitted and automatically stopping the power supply. The flash light shielding signal of the comparison circuit 11 of the photometric circuit 8 described above is supplied to the gate of the thyristor Q1 of the light shielding circuit 9 to make the thyristor Q1 conductive. As a result, the DC voltage E3 of the power supply circuit 13 is applied to the light-shielding device 14, and the light-shielding device 14 shields the flash of the light-emitting unit 2 as described above. The light-shielding device 14 is PLZT.
In the case of No. 33, a DC voltage (half-wavelength voltage) that changes the optical phase difference of the incident light on the PLZT 33 by π may be applied. In the present embodiment, the voltage applied to the liquid crystal is DC, but one example is shown. However, AC may be applied to prolong the life of the liquid crystal. In this case, a means for oscillating the DC voltage of the power supply applied by the conduction of the thyristor Q1 is provided, and the AC voltage generated thereby is applied to the light-shielding device which is a liquid crystal.

FIG. 10 shows a light shielding circuit 9A when the ECD is used. The terminal C is connected to the comparison circuit 11 of the photometric circuit 8 described above, and is supplied with the flash light shielding signal. Normally, the switch S2 is turned on, and when a flash light shield signal, that is, a positive voltage is applied to the gate of the thyristor Q2, the DC voltage E4 of the power supply circuit 16 is applied to the ECD15 and the ECD15 is colored. The flash of the light emitting unit 2 is blocked. Next, after the light emission of the light emitting unit 2 ends, the switch S2
, The reverse voltage is applied to ECD15,
ECD15 disappears.

The light-shielding circuit is not limited to the above-mentioned embodiment, and any method may be used as long as the light-shielding signal is applied to the light-shielding portion when the amount of exposure reaches a certain amount and a voltage is applied to the light-shielding device by the light-shielding signal. But it's okay. In addition, the power supply circuits 13 and 16
Is a circuit different from the power supply circuit 12, but it can be used as a service circuit if adjusted so that the light-shielding device operates.

In this way, the object scene is divided into a plurality of divided photometric areas for photometry, and based on the photometric results, a plurality of areas corresponding to the plurality of illuminated areas of the object scene corresponding to the respective divided photometric areas are obtained. Since the flash light of the light emitting unit is shielded for each of the emission areas, the flash exposure can be performed with proper exposure for a plurality of subjects existing in the field of view and having different shooting distances.

Although the bulk electro-optical modulator, the liquid crystal, and the ECD are used as the light-shielding member of the light-shielding portion in the above-mentioned embodiment, the light-shielding member is not limited to the above-mentioned embodiment and the flash light is electrically controlled. Any member that can shield light may be used.

Further, in the above embodiment, the photometric unit 5 and the light shielding unit 3 are divided into nine, but the number of divisions and the shape of division are not limited to those in the above embodiment.

In the construction of the above embodiment, the light emitting section 2 and the light shielding sections 3, 3A and 3B constitute flashing means, the photometric section 5 constitutes photometric means, and the light shielding circuits 9 and 9A constitute control means.

[0033]

As described above, according to the present invention, the light-shielding signal is output based on the photometric result of the reflected light of the flashlight reflected from the object field, and the flashlight of the light-emitting portion is almost completely emitted according to the light-shielding signal. Since the light is shielded from light, even if there are a plurality of subjects with different shooting distances in the field, they can all be flash-photographed with proper exposure. Further, the field of view is divided into a plurality of divided photometric areas to perform photometry, and based on the photometric results, the flash of the light emitting unit is blocked for each of a plurality of emission areas corresponding to a plurality of irradiation areas of the field of view. Since this is done, it is possible to perform flash photography with a more appropriate exposure for a plurality of subjects existing in the object scene with different shooting distances. Further, by setting the divided shape of the photometric area and the divided shape of the exit area to be the same shape, it is possible to further improve the exposure accuracy during flash photography with respect to a plurality of subjects having different shooting distances in the field. ..

[Brief description of drawings]

FIG. 1 is a diagram for responding to a complaint.

FIG. 2 is an external view of a flash lighting device according to an embodiment.

FIG. 3 is a diagram illustrating an outline of an embodiment.

FIG. 4 is a sectional view of a light-shielding portion of the present invention using a bulk-type electro-optical modulator.

FIG. 5 is a diagram showing the principle of light shielding by a bulk-type electro-optical modulator.

FIG. 6 is a sectional view of a light-shielding portion of the present invention using liquid crystal.

FIG. 7 is a diagram showing the principle of light shielding by liquid crystal.

FIG. 8 is a cross-sectional view of a light shielding portion of the present invention using ECD.

FIG. 9 is a diagram showing a photometric circuit and a light shielding circuit of the present invention.

FIG. 10 is a diagram showing a light shielding circuit when an ECD is used.

FIG. 11 is a diagram showing a case where a plurality of subjects having different shooting distances exist in a field.

[Explanation of symbols]

1 Electronic flash device (strobe) 1a Mounting leg 1b Lock nut 2,100,200,300,400,500,600
Light-emitting part 3,3A, 3B, 101,301,501 Light-shielding part 3a-3i, 3Aa-3Ai, 3Ba-3Bi Light-shielding part region 4 Fresnel lens 5 Photometric part 5a-5i Photometric part region 6 Lens part 7 Light-emission control part 8 Photometric part Circuit 9, 9A Light-shielding circuit 10 Detection circuit 11 Comparison circuit 12, 13, 16 Power supply circuit 14 Light-shielding device 15 ECD 21 Flash ball 22 Mirror 31, 31A Deflector 32, 32A, 32B, 34, 34A, 34B Transparent electrode 33 Bulk type Electro-optical modulator (PLZT) 33A Liquid crystal 35, 35A Analysis plate 36, 36A, 36B Power supply 37, S1, S2 switch 38 EC layer (WO ₃ layer) 39 Solid electrolyte layer 39a Ti ₂ O ₅ layer 39b Ir ₂ O ₃ / SnO ₂ layer Q1, Q2 thyristor C1 condenser 201a, 201b, 401a, 401 , 601a,
601b division light-shielding part 102,202,202A, 302,402,402
A, 502, 602, 602A Flashing means (flash illuminating device) 103, 203, 203A, 303, 403, 403
A, 503, 603, 603A Photometric means 203a, 203b, 403a, 403b, 603a,
603b Division photometric unit 104, 204, 304, 404, 504, 604 Control means

Claims (9)

[Claims] 1. A flash unit comprising a light emitting unit for emitting a flash light and a light shielding unit for substantially completely blocking the flash light of the light emitting unit according to a light blocking signal, and light emitted from the flash unit and reflected by an object field. A flash lighting system comprising: a photometric unit for photometry; and a control unit for outputting the light-shielding signal to the light-shielding unit based on a photometric result of the photometric unit. 2. The flash illumination system according to claim 1, wherein the flash means is divided into a plurality of emission areas corresponding to a plurality of irradiation areas of the field, and the emission areas are divided into a plurality of emission areas. A split light-shielding portion for substantially completely blocking the flash of the light-emitting portion, wherein the photometric means has a split photometric portion for dividing the field into a plurality of photometric areas and performing photometry for each photometric area, The flash illumination system, wherein the control means outputs a light-shielding signal to each of the divided light-shielding portions based on a photometric result of each of the divided light-metering portions. 3. The flash illumination system according to claim 2, wherein the divided shape of the plurality of emission areas of the flash means and the divided shape of the plurality of photometry areas of the photometry means are substantially the same shape. A flash lighting system. 4. A flash unit comprising a light emitting unit for emitting a flash light and a light shielding unit for substantially completely blocking the flash light of the light emitting unit according to a light blocking signal, and light emitted from the flash unit and reflected by an object field. A flashlight illuminating device comprising: photometric means for photometry; and control means for outputting the light-shielding signal to the light-shielding portion based on a photometric result of the light-metering means. 5. The flash illumination device according to claim 4, wherein the flash means is divided into a plurality of emission areas corresponding to a plurality of irradiation areas of the object scene, and the emission areas are divided into the plurality of emission areas. A split light-shielding portion for substantially completely blocking the flash of the light-emitting portion, wherein the photometric means has a split photometric portion for dividing the field into a plurality of photometric areas and performing photometry for each photometric area, The flash lighting device, wherein the control means outputs a light-shielding signal to each of the divided light-shielding portions based on a photometric result of each of the divided light-metering portions. 6. The flash illumination device according to claim 5, wherein the divided shape of the plurality of emission areas of the flash means and the divided shape of the plurality of photometry areas of the photometry means are substantially the same shape. A flash lighting device. 7. A camera provided with a flash illuminating device comprising a light emitting part for emitting a flash light and a light shielding part for substantially completely blocking the flash light of the light emitting part in accordance with a light blocking signal. A camera provided with a flashlight illuminating device, comprising: photometric means for photometrically measuring the light reflected in the field of view; and control means for outputting the light-blocking signal to the light-blocking portion based on the photometric result of the photometric means. .. 8. A camera provided with the flash lighting device according to claim 7, wherein the flash lighting device is divided into a plurality of emission areas corresponding to a plurality of irradiation areas of the object scene, Each of the emission areas has a divided light-shielding portion that almost completely blocks the flash of the light-emitting portion, and the photometric means divides the object field into a plurality of photometric areas to perform photometry for each photometric area. A camera provided with a flashlight illuminating device, characterized in that the control means outputs a light-shielding signal to each of the divided light-shielding portions based on a photometric result of each of the divided light-metering portions. 9. A camera provided with the flash lighting device according to claim 8, wherein a divided shape of the plurality of emission areas of the flash lighting device,
A camera provided with a flashlight illuminating device, wherein the divided shape of the plurality of photometric areas of the photometric means is substantially the same.