JP2002323372A - Exposure meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent mistake in a measuring system by a user, concerning an exposure meter equipped with both an incident light system light receiving part and a reflection light system light receiving part. SOLUTION: This exposure meter is equipped with a control circuit 55 for displaying a measured value only on an external LCD 3 while measurement by the incident light system in the ON state of an incident light measuring key 27, and displaying the measured value only on a finder LCD 35 while measurement by the reflected light system in the ON state of a reflected light measuring key 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exposure meter used at the time of photographing and the like, and more particularly to an exposure meter capable of performing photometry using both an incident light type and a reflected light type.

[0002]

2. Description of the Related Art In taking photographs for business use, an exposure meter is often used to accurately measure an appropriate exposure amount of a subject. The light metering method of the exposure meter includes an incident light type that determines the proper exposure based on the amount of light (illumination of the subject) that strikes the subject, and a reflected light type that determines the proper exposure based on the reflected light from the subject (the brightness of the subject). These two types are used in combination or used in accordance with the shooting conditions and the intention of the photographer.

[0003] Therefore, conventionally, as an exposure meter corresponding to both the incident light type and the reflected light type, an exposure meter in which an incident light type light receiving unit and a reflected light type light receiving unit can be selectively mounted, and a hemispherical type light receiving unit A reflective light exposure meter that can measure incident light when a milky white cover is attached, and both an incident light receiver and a reflected light receiver are provided, and the light measurement method can be switched by switching the operation lever. Exposure meters and the like have been put to practical use.

[0004]

However, when an exposure meter in which the incident light type light receiving unit and the reflected light type light receiving unit can be selectively mounted, or a hemispherical milky white cover is attached to the light receiving unit, the incident light type light receiving unit can be used. In the case of a reflected light type exposure meter that can measure light, it is necessary to attach and detach a light receiving unit and a cover to switch between the incident light type and the reflected light type, and it is not possible to flexibly switch between the two at the shooting site, Convenience was not good.

Further, in the case of an exposure meter having both an incident light type light receiving unit and a reflected light type light receiving unit, and a photometric method can be switched by switching an operation lever, during a photographing operation and an exposure measuring operation at a photographing site. There is a possibility that the user may mistake the incident light type and the reflected light type and use the measurement result by mistake.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can prevent a user from erroneously recognizing a measurement method in an exposure meter having both an incident light type light receiving unit and a reflected light type light receiving unit. The purpose is to provide a simple light meter.

[0007]

According to a first aspect of the present invention, there is provided an exposure meter including an incident light type light receiving unit and a reflected light type light receiving unit, and capable of measuring both an incident light type and a reflected light type.
First display means for displaying the measured value; second display means for displaying the measured value which is provided at a position different from the first display means; and Display control means for displaying a value only on the first display means and displaying the measured value only on the second display means during measurement by the reflected light method.

According to this configuration, the measured value is displayed only on the first display means during the measurement by the incident light method, and the measured value is different from that of the first display means during the measurement by the reflected light method. It is displayed only on the second display means disposed at the position.
Therefore, the display means for displaying the measured value during each measurement of the incident light type and the reflected light type is clearly distinguished, and erroneous recognition of the measurement method is prevented.

According to a second aspect of the present invention, in the exposure meter according to the first aspect, a finder for visually recognizing a measurement site is provided, and the first display means is disposed on a surface of the apparatus main body.
The second display means is provided inside the finder.

According to this configuration, the incident light type measurement is performed while the face is separated from the apparatus main body, and the reflected light type measurement is performed while looking through the finder for visually recognizing the measurement site. Become. Therefore, the incident light measurement can be suitably performed while observing the measurement value displayed on the first display means provided on the surface of the apparatus main body during the measurement. On the other hand, the reflected light measurement can be suitably performed while observing the measured value displayed on the second display means provided inside the finder during the measurement. Therefore,
After the measurement by each measurement method is clearly distinguished, each measurement is suitably performed.

According to a third aspect of the present invention, in the exposure meter according to the second aspect, the display control means includes the first display means in addition to the second display means from the time when the measurement by the reflected light method is completed.
It is characterized in that the display means displays the measured value by the reflected light method.

When the reflected light type measurement performed while looking through the viewfinder is completed, the face is generally separated from the viewfinder. Therefore, according to the configuration of claim 3, since the measurement value by the reflected light method is displayed on the first display means in addition to the second display means from the time when the measurement by the reflected light method is completed, the measurement is completed. It is not necessary to look into the finder again to confirm the measured value later, and the usability is improved.

Further, when the face is separated from the finder after the reflected light type measurement is completed, the display of the measured value on the second display means becomes unnecessary. If the display operation of the second display means is prohibited later (claim 4), wasteful power consumption is reduced. Therefore, for example, when a battery is used as a power supply for supplying power to the second display means, the consumption of the battery is suppressed, and the shortening of the usable time of the battery is prevented.

According to a fifth aspect of the present invention, in the exposure meter according to the second aspect, when the measurement by the reflected light method is completed, the display control means displays the measured value from the second display means. It is characterized by changing to one display means.

When the reflected light type measurement performed while looking through the viewfinder is completed, the face is generally separated from the viewfinder. Therefore, according to the configuration of claim 5, when the measurement by the reflected light method is completed, the display of the measurement value by the reflected light method is changed from the second display means to the first display means. It is not necessary to look into the viewfinder again to check the condition, and the usability is improved. In addition, when the face is separated from the finder after the measurement of the reflected light type is completed, the display of the measured value on the second display means becomes unnecessary, and the display on the second display means is not performed.
Power is not wasted. Therefore, for example, when a battery is used as a power supply for supplying power to the second display means, the consumption of the battery is suppressed, and the battery capacity can be effectively used.

According to a sixth aspect of the present invention, in the exposure meter according to any one of the first to fifth aspects, the display control means is provided in addition to the first display means from the time when the measurement by the incident light method is completed. The second display means displays the measured value by the incident light method.

According to this configuration, the measured value based on the incident light method is displayed on the second display means in addition to the first display means after the measurement based on the incident light method is completed. Either display means can confirm the measured value by the incident light method, and the usability is improved.

According to a seventh aspect of the present invention, in the exposure meter according to the sixth aspect, the display control means inhibits the display operation of the second display means after a predetermined time has elapsed from the end of the measurement. It is characterized by.

According to this configuration, the display operation of the second display means is inhibited after a predetermined time has elapsed from the end of the measurement, thereby reducing power consumption. Therefore, for example, the second
When a battery is used as a power supply for supplying power to the display means, the consumption of the battery is suppressed, and the battery capacity can be effectively used.

According to an eighth aspect of the present invention, in the exposure meter according to any one of the first to seventh aspects, a first measurement button for instructing a start of measurement by an incident light type, and a position different from the first measurement button. And the second measurement button for instructing the start of measurement by the reflected light method and the measurement by the incident light method are continuously performed while the first measurement button is on, and the second measurement button is turned on. In the meantime, there is provided a measurement control means for continuously performing the measurement by the reflected light method.

According to this configuration, while the first measurement button is on, measurement by the incident light method is continuously performed, and while the second measurement button is on, measurement by the reflected light method is continuously performed. However, since the first measurement button and the second measurement button are arranged at different positions, the possibility of erroneous operation is reduced.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing the appearance of an embodiment of an exposure meter according to the present invention, FIG. 2 is a rear view thereof, FIG. 3 is a perspective view thereof, and FIG. Figure showing
FIGS. 5A and 5B are diagrams showing an example of the light receiving angle characteristics.

In FIG. 1, an exposure meter main body 1 is shown.
Are sized and shaped so that a user can easily hold and operate with one hand. A power key 20 is provided at an upper front portion of the apparatus main body 1, and an ISO key 2 is provided at a lower front portion thereof.
1. A measurement reference setting key 22, a measurement mode key 23, a memory clear key 24, a memory key 25 are provided, a reflected light measurement key 26 is provided on the left side, and an incident light measurement key 27 and an operation dial are provided on the right side. 28, and a setting mode key 29 is provided at the lower rear portion as shown in FIG.

Further, as shown in FIG. 1, an external LCD 3 is provided at the center of the front of the apparatus main body 1, and at the upper part of the front,
A finder 41 and an external light receiving sensor 5 are provided, a synchro terminal 6 is provided at a lower part on the front, and an incident light receiving part 7 is attached to an upper end of the apparatus main body 1. Also,
As shown in FIG. 2, an external light receiving section connector 8 is provided below the reflected light measurement key 26 on a side surface of the apparatus main body 1, and an objective lens window 42 and a diopter adjusting dial 9 are provided on an upper rear surface. ing.

Immediately inside the finder 41, as shown in FIG. 4, a transparent plate member 32 made of, for example, glass is provided. Around the plate member 32, a field frame 33 is painted black, for example. Is formed. An index 34 indicating a measurement site is disposed substantially at the center of the plate member 32, and a finder LCD 35 is disposed below the viewing frame 33.

Returning to FIG. 1, the power key 20 is used to switch on / off the power of the apparatus every time the key is pressed. The external LCD 3 is arranged between a group of keys such as the ISO key 21 and the power key 20 and the two are arranged as far apart as possible to prevent erroneous operation. Further, if the pressed time is within a minute predetermined time, it is regarded as not a pressing operation, and control is performed so as to prevent an erroneous operation.

The ISO key 21 has a nonvolatile memory 53
This is for switching between the two types of film sensitivities stored in FIG. 10 (FIG. 10). In the present embodiment, the display is switched, for example, for each pressing operation. The first film sensitivity may be displayed when the ISO key 21 is not pressed, and the second film sensitivity may be displayed while the ISO key 21 is pressed.

The measurement reference setting key 22 is used to set a measurement reference in the reflected light type measurement. In this embodiment, for example, three types of highlight reference exposure, shadow reference exposure, and average exposure can be set. Partial photometry is performed on the measurement target (subject) so that exposure calculation according to the drawing intention can be performed.

The measurement mode key 23 is used to switch the measurement mode.
mbi), a cord-type flash light measurement (Cord) to which a synchro cord is connected, and a non-code type flash light measurement (Non.
The three measurement modes C) are cyclically switched.

The memory clear key 24 is for erasing all measured values stored in the nonvolatile memory 53 (FIG. 10).

The memory key 25 is for storing the measured value in the nonvolatile memory 53 (FIG. 10). When this key is operated, the latest measured value is stored in the nonvolatile memory 53, The measured value is displayed as dots on the analog scale 3b (FIG. 8) of the external LCD 3. The stored measurement value is retained even when a new measurement is performed, and the display on the analog scale unit 3b (FIG. 8) is continued.

The reflected light measuring key 26 is operated when performing the reflected light type measurement, and the incident light measuring key 27 is operated when performing the incident light type measurement.
By arranging 27 separately on the left and right sides, erroneous operations in selecting the photometry method are reduced. Each of the measurement keys 26 and 27 is turned on only while being pressed by a finger, for example, and is turned off when the finger is released.

The operation dial 28 is used to change the value in various setting operations, and changes the setting of the shutter speed in the measurement mode and changes the setting value in the setting mode. The operation dial 28 is composed of a rotary switch that can be rotated in the vertical direction as indicated by arrows in FIGS. 1 and 2, and is configured so that the set value increases or decreases according to the rotation direction.

The setting mode key 29 is for switching the operation mode of the light meter to the setting mode. The setting mode key 29 is not frequently operated, and if it is erroneously operated during the measurement, it will interfere with the measurement. Also,
In order to prevent erroneous operation, the key head is set at the same height as or slightly lower than the rear of the housing, and can be operated with a claw or the like by a groove 29a formed on the periphery, thereby making the shape difficult to operate. ing.

The operating section 2 (FIG. 10) is constituted by these operating members 20 to 29, and the detection of the operation on the operating members 20 to 29 and the control based on the operation are performed by a control circuit 55 (FIG. 10).
Done by

The external light receiving sensor 5 outputs an electric signal corresponding to the intensity of the received light.
S, a silicon photodiode, or the like can be used. The external light receiving sensor 5 is for detecting the brightness of the surroundings.
The backlight 36 for D (FIG. 10) is controlled to be turned on.

The synchro terminal 6 is for connecting a synchro code when measuring flash light.

The incident light receiving section 7 is attached to the upper end of the apparatus main body 1 by an attaching section 11, and is rotatable with respect to the apparatus main body 1 as shown in FIG. Thus, the holding direction of the apparatus main body 1 with respect to the incident direction of the incident light to be measured is not restricted by the photographing situation.

A cover member 70 is provided on the surface of the incident light receiving portion 7.
Is provided, and an incident light receiving sensor 71 (FIG. 10) is provided therein.
Are arranged. The cover member 70 is formed of a member having transmission and diffusion properties. When the cover member 70 is used for photometry of a three-dimensional object such as a person, the light reception angle characteristic I has a cardioid characteristic as shown in FIG. _{I = I 0 [(1 +} cosθ) / 2] of the light-receiving ball is used a mold, when metering the plane thereof, the light-receiving angle characteristic is a cosine shape as shown in FIG. 5 (b) I = I ₀ A cos θ plane light receiving plate is used.

The external light receiving section connector 8 is a connector for connecting an external light receiving section 81 (FIG. 10) other than the built-in light meter. If the external light receiving unit 81 (FIG. 10) is provided with a cover member that is smaller than the cover member 70 of the incident light receiving unit 7, for example, the difference in brightness of a small subject can be measured. The output signal from the external light receiving section 81 (FIG. 10) connected to the external light receiving section connector 8 can be processed as an incident light type measurement or a reflected light type measurement.

A reflected light measuring optical system 40 is provided between the finder 41 shown in FIG. 1 and the objective lens window 42 shown in FIG. 6A is a plan view of the reflected light measuring optical system 40 as viewed from above, FIG. 6B is a view as viewed from the arrow B in FIG. 6A, and FIG.
FIG. 2D is a view taken in the direction of the arrow D in FIG. FIG. 7 is a perspective view showing a schematic configuration of the reflected light measuring optical system 40.

In the reflected light measuring optical system 40 shown in FIGS. 6 and 7, a reflected light 43 from a measuring object (not shown) incident through an objective lens window 42 (FIG. 2) is focused by an objective lens 44. Measurement light beam 43a by half mirror 45
And the measurement position confirmation light beam 43b.

The measuring light beam 43 a is reflected by the total reflection mirror 46 and guided to the reflected light receiving sensor 48 via the aperture plate 47. The aperture plate 47 is disposed so that the position can be moved in the direction perpendicular to the optical axis, restricts the measured light receiving angle, and matches the measured position with an index (described later) indicating the measured position displayed in the finder 41. It is possible to make adjustments.

On the other hand, the measuring position confirmation light beam 43b is reflected by the total reflection mirror 49, is focused by the condenser lens 50, is changed in direction by the finder prism 51, and is incident on the eyepiece lens 52, and is finder 41 (FIG. 1). Is emitted to the outside of the apparatus body 1 (FIG. 1). The eyepiece 52 is disposed so as to be movable in the optical axis direction, and moves when the diopter adjustment dial 9 (FIG. 2) is rotated to change the diopter observable from the finder 41 (FIG. 1). Is done.

Each member constituting the reflected light measuring optical system 40 is mounted on an independent optical base plate (not shown) which is separate from the member forming the apparatus main body 1, and adjustment work such as optical axis adjustment is performed. Is performed on an optical base plate before being incorporated in the apparatus main body 1. Since each member of the reflected light measuring optical system 40 is mounted on a separate optical base plate separated from the apparatus main body 1 in this manner, the apparatus main body 1 does not need to hold each member with high accuracy, and There is an advantage that a design considering the rigidity of the main body 1 becomes unnecessary.

FIGS. 8A to 8G are views showing examples of display on the external LCD 3. FIG. In the present embodiment, the external LCD 3 is formed of, for example, a segment type liquid crystal, as shown in FIG. This light meter is provided with an external LCD backlight 36 (FIG. 10) to make it easy to see even in a dark place.

As shown in FIG. 8A, the external LCD 3
Measured values such as aperture value (Fno.) And exposure value (Ev),
Digital display unit 3a that displays set values such as film sensitivity (ISO), measurement mode (Ambi / Cord / Non.C), and shutter speed (Time) as measurement conditions; And a vertically long analog scale section 3b. External LC
D3 is formed in a vertically long shape, and the measured value, the set value, and the like are displayed on a new line so that each value can be easily distinguished.

At the upper end of the digital display section 3a, an incident mark 3c for indicating a measured value of the incident light type (Inc) and a reflection mark for indicating a measured value of the reflected light type (Ref) are provided. Mark 3d is provided.

As shown in FIG. 8 (a), the analog scale section 3b is provided with vertical dot rows for displaying measured values of the reflected light type (Ref) and the incident light type (Inc) on the left and right, respectively. And the number of lights in this dot row
From the reference exposure value, the exposure allowable width (latency) of a photosensitive material such as a film or a CCD can be displayed.

FIG. 8B shows the aperture value (Fno.) Of the incident light type.
In an example of the display, the large display “128” indicates that the measured value is F12.
The small display “9” indicates that the correction amount of the display value is 0.9. (c) is also an example of an incident light type aperture value (Fno.) display. A large display “1.0” indicates that the measured value is F1.0, and a small display “0” indicates the display value. This indicates that the correction amount is 0.0.

(D) is an example of an incident light type exposure value (Ev) display, in which a large display "21" and a small display "6" indicate that the measured value is Ev21.6. (e) is an example of a latitude display during measurement by the incident light method,
This indicates that the brightness is 2.3 Ev brighter than the reference exposure value.

(F) is an example of the latitude display after the measurement by the reflected light type, in which a reflection mark 3d is displayed at the upper end and a large display "3" is displayed on the digital display section 3a.
"2" and a small display "4" indicate that the reference exposure value is F32.4, and the reflected light measurement value (between F16 and F22) is displayed in dots on the analog scale section 3b.

(G) is an example of a display during measurement by the reflected light method, in which a reflection mark 3d is displayed at the upper end, and the display box 3e for the measured value is blank, and the display of the measured value is prohibited. Have been. (h) is an example of a display after measurement by the reflected light method, in which a reflection mark 3d is displayed at the upper end, a large display “1.0” indicates that the measured value is F1.0, and a small display “0”. Indicates that the correction value of the display value is 0.0. These figures will be referred to when the measurement procedure is described later.

As described above, the analog scale section 3b can display the measured values of the incident light type (Inc) and the reflected light type (Ref) independently of each other depending on the display position. Note that, for example, the measurement values of each measurement method may be displayed using different display colors.

As shown in FIG. 8 (f), for example, the allowable exposure width (latitude) of a photosensitive material such as a film or CCD is displayed simultaneously with the measured value (reflected light type in FIG. 8) from the reference exposure value. Can be.

FIGS. 9A to 9F are views showing display examples on the finder LCD 35. FIG. In the present embodiment, the finder LCD 35 is formed of, for example, a segment type liquid crystal, as shown in FIG. The light meter also includes a finder LCD backlight 37 (FIG. 10) to make it easy to see even inside a dark finder.

The finder LCD 35 is, for example, shown in FIG.
As shown in the figure, a reflection mark 35a indicating that the measurement is of the reflected light type and an incident mark 35b indicating that the measurement is of the incident light type are provided at the right end. Further, the magnitude of the numbers is displayed in the same manner as in FIG.

FIG. 9B shows the aperture value (Fno.) Of the reflected light type.
As an example of the display, a large display “128” and a small display “9” indicate that the measured value is F128 and the correction amount of the display value is 0.1.
9 and the reflection mark 35a is displayed. (c) shows the aperture value (Fn) after measurement by the incident light method.
o. In an example of the display, the large display “1.0” and the small display “0” indicate that the measured value is F1.0 and the correction amount of the display value is 0.0, and the incident mark 35b is displayed. I have.

(D) is an example of a reflected light type exposure value (Ev) display. A large display "21" and a small display "6" indicate that the measured value is Ev21.6, and the reflection mark 35a is displayed. Is displayed.

(E) is an example of the latitude display during the measurement by the reflected light method, which is shown in FIG.
3Ev is bright, and the reflection mark 35a is displayed. (f) is an example of the display during the measurement by the incident light method, in which the incident mark 35b is displayed at the right end, the display column 35c of the measured value is blank, and the display of the measured value is prohibited. These figures will be referred to when the measurement procedure is described later.

FIG. 10 is a block diagram showing the electrical configuration of the light meter. 1 and 2 are denoted by the same reference numerals. The light meter includes a power supply circuit 57 and a measurement circuit 5
8, nonvolatile memory 53, display unit 54, control circuit 55,
An operation unit 2 is provided.

The power supply circuit 57 includes a power supply circuit 61 for an analog section for supplying power to a measurement circuit 58 of an analog signal system,
A digital signal nonvolatile memory 53, a display unit 54,
The control circuit 55 includes a digital circuit power supply circuit 62 that supplies power to the operation unit 2. Each power supply circuit 61, 62
Receives power from the battery 56, generates power of a predetermined voltage, and supplies the power to each unit. The analog section power supply circuit 61 is configured to be able to stop its operation by a control signal from the control circuit 55.

The measuring circuit 58 includes an external light receiving sensor 5, an incident light receiving sensor 71, a reflected light receiving sensor 48, a sensor switching section 63, and A / D conversion circuits 64 and 65 including an integrating function. Incident light receiving sensor 71, reflected light receiving sensor 4
Reference numeral 8 denotes an element for outputting an electric signal corresponding to the intensity of the received light, such as a selenium photocell, CdS, or a silicon photodiode. The reflected light receiving sensor 48 is set so that the reflected light from the measurement target (subject) enters. The incident light receiving sensor 71 is set so that light hitting the subject is incident.

The connection state of the sensor switching section 63 is controlled based on a control signal from the control circuit 55, and one of the incident light receiving sensor 71 and the reflected light receiving sensor 48 is set to A / A
Connected to D conversion circuit 64. Light reception data corresponding to the light intensity received by the incident light receiving sensor 71 or the reflected light receiving sensor 48 is sent to the control circuit 55 via the A / D conversion circuit 64.

Light receiving data corresponding to the surrounding brightness is sent from the external light receiving sensor 5 to the control circuit 55 via the A / D conversion circuit 65.

The control circuit 55 includes a CPU and controls the operation of each section. The control circuit 55 sends control signals to the analog section power supply circuit 61 and the measurement circuit 58 based on the operation of each operation key of the operation section 2. In addition to controlling the operation of each unit, a control signal is sent to the display unit 54 to control the display mode of the display unit 54.

The non-volatile memory 53 includes, for example, EEPRO
M and a control circuit 55 including preset data
Is stored.

In FIG. 10, the incident light receiving sensor 71
And the reflected light receiving sensor 48 are connected to the sensor switching unit 6 respectively.
3, the sensor switching unit 63 and the control circuit 55
Although the A / D conversion circuit 64 is interposed between the sensor and the sensor switching unit 63, for example, the A / D conversion circuit is interposed between the incident light receiving sensor 71 and the sensor switching unit 63, An A / D conversion circuit may be interposed between the light receiving sensor 48 and the sensor switching unit 63, and the sensor switching unit 63 and the control circuit 55 may be directly connected. Even with such a configuration, a similar operation can be obtained.

Next, the operation procedure of the exposure meter controlled by the control circuit 55 will be described with reference to the flowcharts of FIGS. FIG. 11 is a flowchart of the main routine.

When the battery 56 is inserted into the battery mounting section (not shown), power is supplied from the power supply circuit 62 for the digital section, and the CPU of the control circuit 55 starts operating. It is checked whether there is any damage or inconsistency (# 100). If there is no problem in the check result (YES in # 105), various initial settings are performed according to preset data (# 110). In this initial setting, the sensitivity correction value of the incident light receiving sensor 71, the sensitivity correction value of the reflected light receiving sensor 48, the sensitivity correction value of the external light receiving unit connected to the external light receiving unit connector 8, and the user correction value of the incident light display value , The user correction value of the reflected light display value, two types of photosensitive material sensitivity values, the measurement value display unit at the time of steady light measurement, the change step width when the shutter speed is changed, the photometry method of the external light receiving unit (incident light type or reflected light Expression) is set to the default value.

Next, at # 115, the external LCD 3
In addition, all the segments of the finder LCD 35 are turned on, and the respective backlights 36 and 37 are turned on, so that it is possible to confirm whether or not there is any problem in the operation of the display unit 54 (FIGS. 8 (a) and 9 (b)). a)).

After a lapse of a predetermined time, the backlights 36 and 37 are turned off, the measured value display on the external LCD 3 and the finder LCD 35 are turned off, and the mode shifts to the measurement mode (# 120).

On the other hand, if there is any problem in the result of checking the stored data in the nonvolatile memory 53 (NO in # 105), a display indicating an abnormality is displayed on the external LCD 3 (# 125), and the process is terminated.

FIG. 12 is a flowchart showing a measurement mode routine following the main routine of FIG.

First, it is determined whether or not the incident light measurement key 27 has been turned on (# 200). If it has not been turned on (NO in # 200), whether or not the reflected light measurement key 26 has been turned on Is determined (# 205), and if not turned on (NO in # 205), it is determined whether or not the setting mode key 29 has been turned on for a predetermined time (# 210).
If it is not turned on (NO in # 210), # 200
And the above steps are repeated.

Then, when the incident light measurement key 27 is turned on (YES in # 200), it is determined whether or not the latitude display is turned on (# 215), and if it is not turned on (# 215). NO), a first incident light processing subroutine described below is performed (# 220), and # 200
Return to On the other hand, if the latitude display is turned on (YES in # 215), a second incident light processing subroutine described later is performed (# 225), and the process returns to # 200.

When the reflected light measurement key 26 is turned on (YES in # 205), it is determined whether or not the latitude display is turned on (# 230), and if it is not turned on (# 230). NO), a first reflected light processing subroutine described later is performed (# 235), and the process returns to # 200. On the other hand, if the latitude display is turned on (YES in # 230), a second reflected light processing subroutine described later is performed (# 240), and the process returns to # 200.

When the setting mode key 29 is turned on for a predetermined period of time (YES in # 210), a setting mode processing subroutine described later is executed (# 245), and # 20 is executed.
Return to 0.

FIG. 13 is a flowchart showing a first incident light processing subroutine of # 220 in FIG.

First, the display of the measured value on the finder LCD 35 and the backlight 37 for the finder LCD are turned off (# 300). Then, the sensor switching section 63 is switched to the incident light receiving sensor 71 (# 305). A subroutine is executed to obtain a measured value (# 3
10).

Next, in step # 315, the measured values obtained are displayed on the external LCD 3 (see FIGS. 8B, 8C, and 8D).

Next, it is determined whether or not the external light level detected by the external light receiving sensor 5 is equal to or higher than a predetermined value (# 32).
0) If it is less than the predetermined value (NO in # 320), the backlight 36 for external LCD is turned on because it is dark, and # 330
If the external light level is equal to or higher than the predetermined value (YES in # 320), the process proceeds to # 330 without turning on the backlight 36 because the light is bright.

Then, in # 330, it is determined whether or not the incident light measurement key 27 is kept on. If it is kept on (YES in # 330), # 30 is reached.
Returning to 0, the above steps are repeated. During this time,
As shown in FIG. 9F, the display of measured values on the finder LCD 35 is prohibited.

On the other hand, when the incident light measurement key 27 is turned off (NO in # 330), in # 335, the external LCD
In addition to 3, the measured value of the incident light type is also displayed on the finder LCD 35 (see FIG. 9C), and the finder LCD backlight 37 is turned on.

Next, a predetermined time (for example, in this embodiment, for example,
The display is continued after waiting for 10 seconds) to allow the user to confirm the measured value (# 340). Next, all the backlights 36 and 37 are turned off, and the finder LCD 35 is also turned off (# 345), and the process returns to the main routine.

FIG. 14 is a flowchart showing the second incident light processing subroutine of step # 225 in FIG.

# 400 to # 410 correspond to # 300 to # 300 in FIG.
The description is omitted because it is the same as # 310.

Following # 410, in # 415, the latitude is set to the analog scale 3b of the external LCD 3.
And the difference between the exposure value obtained as the measured value and the reference exposure value is displayed on the digital display section 3a of the external LCD 3 (see FIG. 8 (e)). The following # 420 ~ #
430 is the same as # 320 to # 330 in FIG.

If the incident light measurement key 27 is kept on (YES in # 430), the process returns to # 400 and the above steps are repeated. During this time, FIG.
As shown in the figure, the display of measured values on the finder LCD 35 is prohibited.

On the other hand, when the incident light measurement key 27 is turned off (NO in # 430), the reference exposure value itself is replaced by the difference between the exposure value and the reference exposure value so that the reference exposure value can be confirmed. In addition to being displayed on the digital display section 3a of the external LCD 3, the reference exposure value is also displayed on the finder LCD 35, and the finder LCD backlight 37 is turned on (# 435).

Next, a predetermined time (for example, in this embodiment, for example,
10 seconds) and the display is continued (# 440),
All the backlights 36 and 37 are turned off, and the finder LCD 35 is also turned off (# 445), and the process returns to the main routine.

FIG. 15 is a flowchart showing the first reflected light processing subroutine of # 235 in FIG.

First, the display of the measured value on the external LCD 3 is turned off (# 500), and then the sensor switching section 63 is switched to the reflected light receiving sensor 48 (# 505). Is required (#
510).

Next, at step # 515, the finder L
The measured value is displayed on the CD 35 (see FIGS. 9B and 9D), and the finder LCD backlight 37 is turned on.

Next, it is determined whether or not the reflected light measurement key 26 is kept on (# 520). If it is kept on (YES in # 520), the process returns to # 500 and the above steps are performed. Is repeated. During this time, FIG.
As shown in the figure, the display of measured values on the external LCD 3 is prohibited.

On the other hand, when the reflected light measurement key 26 is turned off (NO in # 520), the measured value of the reflected light type is displayed on the external LCD 3 in addition to the finder LCD 35 in # 525 (FIG. 8). (h)).

Next, a predetermined time (for example, in this embodiment, for example,
10 seconds) and after the display is continued (# 530),
All the backlights 36 and 37 are turned off, and the finder LCD 35 is turned off (# 535), and the process returns to the main routine.

FIG. 16 is a flowchart showing the second reflected light processing subroutine of # 240 in FIG.

# 600 to # 610 correspond to # 500 to # 500 in FIG.
The description is omitted because it is the same as # 510.

Following # 610, in # 615, the difference between the exposure value obtained as the measured value and the reference exposure value is displayed on the finder LCD 35 (see FIG. 9E), and the backlight for the finder LCD is displayed. 37 is turned on.

Next, it is determined whether or not the reflected light measurement key 26 is kept on (# 620). If it is kept on (YES in # 620), the process returns to # 600 and the above steps are performed. Is repeated. During this time, FIG.
As shown in the figure, the display of measured values on the external LCD 3 is prohibited.

On the other hand, when the reflected light measurement key 26 is turned off (NO in # 620), in # 625, the reference exposure value itself is replaced by the finder L instead of the difference between the exposure value and the reference exposure value.
The reference exposure value is displayed on the CD 35 as well as on the external LCD 3 (see FIG. 8F).

Next, a predetermined time (for example, in this embodiment, for example,
10 seconds) and the display is continued (# 630),
All the backlights 36 and 37 are turned off, and the finder LCD 35 is turned off (# 635), and the process returns to the main routine.

In FIGS. 15 and 16, when displaying on the external LCD 3 after the reflected light measurement key 26 is turned off, detection of the external light level by the external light receiving sensor 5 and external LC
Although the backlight 36 for D is not turned on, the detection of the external light level by the external light receiving sensor 5 and the lighting of the backlight 36 for the external LCD are measured by the reflected light measurement, for example, similarly to # 320 and # 325 in FIG. It may be performed after the key 26 is turned off.

FIG. 17 shows # 310 in FIG. 13 and FIG.
17 is a flowchart showing a photometry processing subroutine of # 410 in FIG. 15, # 510 in FIG. 15, and # 610 in FIG.

First, the power supply circuit 61 for the analog section is turned on to start supplying power to the measurement circuit 58 (# 70).
0), and waits for a predetermined time until the operation of the measurement circuit 58 is stabilized (# 705). Next, the incident light receiving sensor 71
Alternatively, the output signal from the reflected light receiving sensor 48 is integrated for a predetermined time (# 710), the A / D converted data is taken into the control circuit 55 (# 715), and the analog section power supply circuit 62 is turned off. After that (# 720), the aperture value (Fno.) Or the exposure value (Ev) is calculated as the measurement value (# 725), and this subroutine is terminated.

FIGS. 18 to 20 show # 245 in FIG.
9 is a flowchart showing a setting mode processing subroutine of FIG.

First, it is determined whether or not the setting mode key 29 has been turned on for a predetermined time (# 800). If it is not turned on (NO in # 800), it is determined whether the power key 20 has been turned on for a predetermined time. It is determined whether or not it is (# 805).
Then, if setting mode key 29 is turned on for a predetermined time (YES in # 800) or power key 20 is turned on for a predetermined time (YES in # 805), this subroutine is terminated.

If the power key 20 is not turned on (# 8)
(NO at 00), it is determined whether or not the incident light measurement key 27 is turned on (# 810), and if it is not turned on (# 8).
(NO at 10), it is determined whether or not the reflected light measurement key 26 is turned on (# 815), and if it is not turned on (# 8).
15 is NO), it is determined whether or not the measurement mode key 23 is turned on (# 820). If it is not turned on (# 8)
20 is NO), it is determined whether or not the measurement reference setting key 22 is turned on (# 825).
(NO at 825), it is determined whether or not the ISO key 21 has been turned on (# 830), and if not turned on (# 83).
(NO at 0), it is determined whether or not the memory key 25 has been turned on (# 835), and if not (NO at # 835), it is determined whether the memory clear key 24 has been turned on (# 835). If it is not turned on (# 840), it is not turned on (# 840)
NO), the process returns to # 800, and the above steps are repeated.

When the incident light measurement key 27 is turned on in # 810 (YES in # 810), the incident light correction value is set (# 845), and the exposure value calculated by the incident light type measurement is set. The display value correction amount can be set. This correction amount is displayed at the measurement value display position on the digital display unit 3a of the external LCD 3, and can be changed by rotating the operation dial 28. When the incident light measurement key 27 is turned on again (YES in # 850), # 800
Return to

When the reflected light measurement key 26 is turned on in # 815 (YES in # 815), the reflected light correction value is set (# 855), and the exposure value calculated by the reflected light type measurement is set. The display value correction amount can be set. This correction amount is displayed at the measurement value display position on the digital display unit 3a of the external LCD 3, and can be changed by rotating the operation dial 28. When the reflected light measurement key 26 is turned on again (YES in # 860), # 800
Return to

When the measurement mode key 23 is turned on in # 820 (YES in # 820), the display unit is set in the stationary light measurement mode (# 865), and the aperture value is set by rotating the operation dial 28 (# 865). Fno.) Display and the exposure value (Ev) display are switched, and the selected setting is the “Fno.” Mark or “Eno.
This is indicated by the lighting of the “v” mark (for example, FIG.
(d)). Then, when measurement mode key 23 is turned on again (YES in # 870), the flow returns to # 800.

When the measurement reference setting key 22 is turned on in # 825 (YES in # 825), the exposure allowable width (lattitude) of the photosensitive material is set, and the highlight side is first set (#). 875). This setting is
It is displayed at the measured value display position on the digital display unit 3a of the external LCD 3, and can be changed by rotating the operation dial 28. During the setting, the “H” mark (see the center of the upper end of FIG. 8A) flashes to notify that the setting is being performed.

Next, when the measurement reference setting key 22 is turned on again (YES in # 880), the setting value on the highlight side is determined and stored in the nonvolatile memory 53, and the setting state on the shadow side is established ( # 885), the set value is external L
It is displayed on the CD 3 and is changed by rotating the operation dial 28. During this setting, the “S” mark (see the upper right corner in FIG. 8A) blinks to notify that the setting is being performed. Then, when the measurement reference setting key 22 is turned on again (YES in # 890), the setting value on the shadow side is stored in the nonvolatile memory 53, and the process returns to # 800.

As described above, the setting of the allowable exposure width (latitude) can be individually changed by individually setting the upper limit and the lower limit.

When the exposure reference value is selected in the measurement mode, the set allowable exposure width is displayed as a dot row on the analog scale section 3b of the external LCD 3. And
When the difference between the new measured value and the reference exposure value exceeds the allowable exposure range, the difference can be determined by means such as blinking.

If the ISO key 21 is turned on at # 830 (YES at # 830), the ISO value of the sensitivity (film speed) of the photosensitive material is set. First is first
When the sensitivity key is set (# 895) and the ISO key 21 is turned on again (YES in # 900), the first sensitivity value is stored in the non-volatile memory 53 and the second sensitivity value is set. (# 905). The set value is displayed at the ISO value display position of the digital display unit 3a of the external LCD 3, and is changed by rotating the operation dial 28. During setting, "I
By flashing the “SO” mark (for example, see the lower part of FIG. 8B), it is notified that the setting is being performed. Then, when the ISO key 21 is turned on again (YE in # 910).
S), the second sensitivity value is stored in the nonvolatile memory 53,
Return to # 800.

When the memory key 25 is turned on in # 835 (YES in # 835), the setting state of the change step when the shutter speed is changed by rotating the operation dial 28 in the measurement mode is set (# 915). The set value is displayed at the measured value display position of the digital display unit 3a of the external LCD 3, and is selected from, for example, 1/2 Tv and 1/3 Tv in the present embodiment by rotating the operation dial 28. During setting, a “Time” mark (for example, FIG. 8
(See the approximate center of (b)) blinks to notify that setting is in progress. Then, when memory key 25 is turned on again (YES in # 920), the set change step is stored in nonvolatile memory 53, and the flow returns to # 800.

When the memory clear key 24 is turned on in # 840 (YES in # 840), the processing is set to the input signal processing from the external light receiving section connected to the external light receiving section connector 8 (# 925). Rotation of the operation dial 28 selects whether to process as incident light or as reflected light. During setting, the selected mark is notified by blinking the incident mark 3c (Inc) or the reflection mark 3d (Ref). Then, when the memory clear key 24 is turned on again (YES in # 930), the selected system is stored in the non-volatile memory 53, and # 800
Return to

Although the setting state of the input signal processing from the external light receiving unit is manually switched here,
However, the present invention is not limited to this. For example, an identification switch may be provided in the external light receiving section connector 8 so that an incident light type or a reflected light type is automatically determined when the external light receiving section is inserted into the connector 8.

As described above, according to the present embodiment, during the measurement by the incident light method when the incident light measurement key 27 is turned on, the measured value is displayed only on the external LCD 3 and the reflected light measurement key 26 is turned on to reflect the light. During the optical measurement, the finder LCD 3
Since the measured value is displayed only on the measurement value 5, the measurement value display portion during the measurement in each measurement method is clearly distinguished, so that the exposure meter corresponding to both the incident light type and the reflected light type can be used. In spite of this, it is possible to prevent erroneous recognition of the measurement method.

According to the present embodiment, when the reflected light measurement key 27 is turned off from on and the measurement by the reflected light method is completed, in addition to the finder LCD 35, the external LCD 3
Since the measured value or reference exposure value is displayed on the LCD, after the reflected light type measurement is completed, the measured value can be confirmed by the external LCD 3 without looking through the finder 41, and the usability as an exposure meter is improved. can do.

Here, at the upper end of the digital display section 3a of the external LCD 3, the incident mark 3c for indicating that it is a measured value of the incident light type (Inc) and the measured value of the reflected light type (Ref) are shown. And the reflection mark 3d is turned on when displaying the measured value on the external LCD 3 after the reflected light type measurement is completed, so that the measurement method can be prevented from being erroneously recognized. .

According to the present embodiment, when the incident light measurement key 26 is turned off from on and the measurement by the incident light method is completed, the finder LCD 35 is added to the external LCD 3.
Since the measured value or the reference exposure value is displayed on the LCD, after the measurement of the incident light type is completed, the measured value can be confirmed on either the external LCD 3 or the finder LCD 35, and the usability as an exposure meter can be improved. Can be.

Here, on the right end of the finder LCD 35, a reflection mark 35a for indicating that the measurement is of the reflected light type.
Mark 3 to indicate that the measurement is of the incident light type
5b, and the finder LC after the incident light type measurement is completed.
When displaying the measured value on D35, the incident mark 35b
Is turned on, it is possible to prevent erroneous recognition of the measurement method.

Further, according to the present embodiment, the finder LCD 35 is provided a predetermined time after the end of the measurement by the reflected light method.
In addition, since all the backlights 36 and 37 are turned off, consumption of the battery 56 can be suppressed. In this case, in general, when the reflected light type measurement is completed, the face is separated from the finder 41 viewed during the measurement, so that no inconvenience occurs even if the finder LCD 35 is turned off.

According to the present embodiment, all the backlights 36,
Since the light 37 is turned off, the battery 5 more than necessary
6 can be suppressed.

Note that the present invention is not limited to the above-described embodiment, but can adopt the following modified embodiments.

(1) In the above embodiment, # 52 in FIG.
As shown in FIG. 5, after the measurement by the reflected light method is completed, the measured value is displayed on the external LCD 3 in addition to the finder LCD 35, but is not limited to this. FIG. 21 shows the first
It is a flowchart which shows the modification of a reflected light processing subroutine.

In step # 525 of FIG.
Turns off the measured value display of 35 and the finder LCD
The backlight 37 is turned off, and the measured value is displayed only on the external LCD 3. For example, if the external LCD backlight 36 is turned on when the external light level is equal to or lower than the predetermined level, the backlight 3 is turned on in # 535.
6 is turned off.

According to this modification, the finder LCD 35 and the finder LC are used after the measurement by the reflected light method is completed.
Since the backlight 37 for D is turned off,
The consumption of the battery 56 can be reduced as much as possible. In this case, in general, when the reflected light type measurement is completed, the face is separated from the finder 41 viewed during the measurement, so that no inconvenience occurs even if the finder LCD 35 is turned off.

(2) In the above embodiment, # 22 in FIG.
5, after completion of the measurement by the incident light method, the external LCD 3 and the finder LCD 35
Although the measurement value or the exposure reference value is displayed in the, but is not limited thereto, after the measurement by the incident light type,
The measured value or the like may not be displayed on the finder LCD 35.

In this case, since the measured value by the incident light type is not displayed on the finder LCD 35, the reflection mark 35a and the incident mark 35 are displayed on the finder LCD 35.
It is not necessary to provide b or the like. Therefore, according to this modification, the configuration of the finder LCD 35 can be simplified.

(3) As shown in FIG.
1 and a reflected light measuring optical system 40 disposed inside
(FIG. 7) may be disposed on a rotatable portion. According to this modification, the direction of the viewfinder 41 can be changed, and the usability of the exposure meter can be improved. Further, by disposing each component of the reflected light measuring optical system 40 (FIG. 7) in a vacant space in the incident light receiving unit 7, the space in the incident light receiving unit 7 can be effectively used,
The overall size of the light meter can be reduced.

(4) In the above embodiment, the external LCD 3 and the finder LCD 35 are the segment type LCs.
Although D is used, the present invention is not limited to this, and a dot matrix type LCD may be used. Further, it may be constituted by another display element such as an LED or an EL element.

(5) In the above embodiment, the finder LC
Backlight 3 for viewfinder LCD as D35 illumination
7 is provided, but external light may be introduced instead of or in addition to the backlight 37. In addition, an external LCD is also provided for the finder LCD 35.
Similarly to 3, an analog scale section may be provided.

[0137]

As described above, according to the first aspect of the present invention, during the measurement by the incident light method, the measured value is set to the first value.
Since the measured value is displayed only on the display means and the measured value is displayed only on the second display means during the measurement by the reflected light type, the measured value is displayed during each measurement of the incident light type and the reflected light type. The displayed display means is clearly distinguished, and it is possible to prevent erroneous recognition of the measurement method.

According to the second aspect of the present invention, there is provided a finder for visually recognizing the measurement site, the first display means is provided on the surface of the apparatus main body, and the second display means is provided inside the finder. With such a configuration, it is possible to suitably perform the measurement using the incident light type and the reflected light type.

According to the third aspect of the present invention, the measured value based on the reflected light method is displayed on the first display means in addition to the second display means after the measurement using the reflected light method is completed. In addition, it is not necessary to look into the finder again to confirm the measured value after the measurement is completed, and the usability can be improved.

According to the fourth aspect of the present invention, the display operation of the second display means is prohibited after a predetermined time has elapsed from the end of the measurement by the reflected light method. When the face is separated from the finder, it is not necessary to display the measured value on the second display means, so that it is possible to prevent power from being wasted.

According to the fifth aspect of the present invention, the display of the measured value is changed from the second display means to the first display means when the measurement by the reflected light method is completed. There is no need to look through the viewfinder again to check
When the ease of use is improved and the face is separated from the finder after the reflected light type measurement is completed, the display of the measured value on the second display means becomes unnecessary, thereby preventing wasteful consumption of power. be able to.

According to the invention of claim 6, since the measurement by the incident light method is completed, the measured value by the incident light method is displayed on the second display means in addition to the first display means. After the measurement is completed, the measured value by the incident light method can be confirmed on any display means, and the usability can be improved.

According to the seventh aspect of the present invention, the display operation of the second display means is inhibited after a predetermined time has elapsed from the end of the measurement, so that power consumption can be reduced.

According to the eighth aspect of the present invention, the first measurement button for instructing the start of measurement by the incident light method and the first measurement button are provided.
The second measurement button is provided at a position different from the measurement button, and instructs the start of measurement by the reflected light method, and continuously performs the measurement by the incident light method while the first measurement button is on.
While the second measurement button is ON, measurement by the reflected light method is continuously performed, so that the first measurement button and the second measurement button are arranged at different positions, so that erroneous operation is possible. Performance can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an appearance of an embodiment of a light meter according to the present invention.

FIG. 2 is a rear view showing the appearance of the embodiment.

FIG. 3 is a perspective view showing the appearance of the embodiment.

FIG. 4 is a diagram showing a configuration immediately inside a finder.

5A is a diagram showing a cardioid light receiving angle characteristic, and FIG. 5B is a diagram showing a cosine light receiving angle characteristic.

6 (a) is a plan view of the reflected light measuring optical system as viewed from above, FIG. 6 (b) is a view of arrow B in FIG. 6 (a), FIG. 6 (c) is a view of arrow C in FIG.
(d) is a view on arrow D of (a).

FIG. 7 is a perspective view showing a schematic configuration of a reflected light measuring optical system.

FIGS. 8A to 8H are diagrams showing display examples on an external LCD.

FIGS. 9A to 9F are views showing display examples of a finder LCD.

FIG. 10 is a block diagram showing an electrical configuration of a light meter.

FIG. 11 is a flowchart of a main routine of an operation procedure.

FIG. 12 is a flowchart showing a measurement mode routine following the main routine of FIG. 11;

FIG. 13 is a flowchart showing a first incident light processing subroutine of # 220 in FIG.

FIG. 14 is a flowchart illustrating a second incident light processing subroutine of # 225 in FIG. 12;

FIG. 15 is a flowchart showing a first reflected light processing subroutine of # 235 in FIG.

16 is a flowchart showing a second reflected light processing subroutine of # 240 in FIG.

17; # 310 in FIG. 13, # 410 in FIG. 14, # 510 in FIG. 15, and # 510 in FIG.
610 is a flowchart illustrating a photometry processing subroutine of 610.

FIG. 18 is a flowchart showing a setting mode processing subroutine of # 245 in FIG.

FIG. 19 is a flowchart showing a setting mode processing subroutine of # 245 in FIG.

20 is a flowchart showing a setting mode processing subroutine of # 245 in FIG.

FIG. 21 is a flowchart showing a modification of the first reflected light processing subroutine.

FIG. 22 is a perspective view showing a modification in which a finder is provided at a rotatable portion.

[Explanation of symbols]

 2 Operation unit 26 Reflected light measurement key (second measurement button) 27 Incident light measurement key (first measurement button) 3 External LCD (first display means) 35 Finder LCD (second display means) 36 Backlight for external LCD 37 Backlight for finder LCD 53 Non-volatile memory 55 Control circuit (display control means, measurement control means)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 17/56 G03B 17/56 Z (72) Inventor Norio Ishikawa 2-3-13 Azuchicho, Chuo-ku, Osaka-shi No. Osaka International Building Minolta Co., Ltd. F-term (reference) 2G065 AA06 AB21 AB22 BA09 BB14 BB20 BC28 BC35 BD01 DA18 2H002 BC11 BC13 DB04 DB05 DB06 DB21 FB23 FB24 FB27 FB51 FB52 FB53 FB55 FB57 FB58 FB81 HA04 HA11 HA12 JA11 AA01 AA02 AA03 AB00 BA01 BA02 BA06 BA12 BA21 BA22 BA27 BB08 BB09 BB22 CA00 CA01 CA11 CA34 2H105 EE00 EE14

Claims (8)

[Claims] A first display means for displaying a measured value in an exposure meter having an incident light type light receiving unit and a reflected light type light receiving unit and capable of measuring both an incident light type and a reflected light type; A second display means arranged at a position different from the first display means for displaying a measured value; and, during the measurement by the incident light method, the measured value is displayed only on the first display means and reflected. An exposure meter, comprising: display control means for displaying the measured value only on the second display means during the optical measurement. 2. The exposure meter according to claim 1, further comprising a finder for visually recognizing a measurement site, wherein said first display means is provided on a surface of the apparatus main body, and wherein said second display means is provided with said finder. An exposure meter, which is arranged inside the light source. 3. The light meter according to claim 2, wherein the display control means controls the first display means in addition to the second display means from the time when the measurement by the reflected light method is completed. An exposure meter for displaying measured values. 4. A light meter according to claim 3, wherein said display control means prohibits a display operation of said second display means after a lapse of a predetermined time from a point in time when measurement by the reflected light method is completed. Exposure meter characterized by the following. 5. The exposure meter according to claim 2, wherein the display control means is configured to stop the measurement when the measurement by the reflected light method is completed.
An exposure meter, wherein the display of the measured value is changed from the second display means to the first display means. 6. The light meter according to claim 1, wherein the display control means includes a second display unit, in addition to the first display unit, when the measurement by the incident light method is completed.
An exposure meter, wherein the display means displays a measured value by the incident light method. 7. The exposure meter according to claim 6, wherein said display control means inhibits a display operation of said second display means after a predetermined time has elapsed from the end of said measurement. Total. 8. The exposure meter according to claim 1, wherein a first measurement button for instructing a start of measurement by an incident light method is provided, and a first measurement button is provided at a position different from the first measurement button. A second measurement button for instructing the start of measurement by a reflected light method; and a measurement by an incident light method is continuously performed while the first measurement button is on, and a reflected light is measured while the second measurement button is on. An exposure meter, comprising: a measurement control unit that continuously performs measurement by an equation.