JPH09160111A - Optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an observer to easily know in what range the designated position by a detection area designating device exists by displaying the position of an area in different display from between the case the detection area designating device designates a detectable range and the case it designates an undetectable range, respectively. SOLUTION: A gazing position calculation part 2 observes the eyeball of a photographer and calculates the gazing position of the photographer on a finder display screen, based on the observed result. The calculated result is inputted in an AF sensor position control part 3 and the display position control part 6a of a display device 6. The control part 3 moves an AF sensor 4 to a specified position, based on the calculated result by the calculation part 2. The display device 6 is provided with the control part 6a and a display part 6b, and the control part 6a moves a display position, based on the calculated result by the calculation part 2 so that the display position by the display part 6b may display the gazing position of the photographer. The display part 6b performs specified display at the display position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device including a focus detection device and a display device.

[0002]

2. Description of the Related Art Conventionally, a gaze position of a photographer is detected,
A camera that performs focus detection at the detected gaze position is known, and FIG. 28 is a diagram showing a viewfinder display screen of this type of camera. Reference numeral 410 denotes an exposure range, which coincides with the finder field frame in a camera with a finder field ratio of 100%. Reference numerals 411a to 411e denote focus detection areas set at a predetermined interval in the central portion of the exposure range 410.
Reference numerals 2a to 412e are focus detection selection areas which are set overlapping with the focus detection areas 411a to 411e. When the gaze position of the photographer detected by the line-of-sight detection device is included in any of the focus detection selection regions 412a to 412e, the focus detection regions 411a to 411e overlapping with this are selected.

Therefore, if the photographer superimposes a subject to be focused on one of the focus detection regions 411a to 411e and gazes at the subject, the focus detection regions 411a to 411e including the subject are selected, and the subject is selected. The focus of the photographic optical system can be adjusted so as to be in focus. Further, by engraving a pattern on a finder screen (not shown) and illuminating it with an LED or the like, the focus detection areas 411a to 411e can be visually displayed to the photographer, and which focus detection can be performed by pressing the release button halfway. Displays whether focus detection was performed in the area. Therefore, the photographer can know in which focus detection area the focus has been detected.

[0004]

However, in the above-described camera, the photographer selects the focus detection selection areas 412a-44.
When the area outside 12e, that is, the area where focus detection is not possible, is being watched, nothing is displayed. Therefore, the photographer performs a shooting operation without noticing that the gaze position is in a region where focus detection cannot be performed, and the camera does not operate, which misses the shooting opportunity, or the subject is in focus even when the camera operates. There was a drawback of not taking so-called out-of-focus photographs.

An object of the present invention is to provide an optical device capable of knowing whether the position indicated by the observer is in a detectable area or an undetectable area of a detection device for detecting object information of an observation target. To provide.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention will be described in association with FIGS. Explaining in association with FIG. 1, the optical device of the invention of claim 1 is an observation device for displaying an observation image within the visual field range of an optical system, and a detection for detecting object information in an area provided within the visual field range. Device 4
And a detection area indicating device 3 for indicating a detection area of the detecting device 4 within the visual field range, and the detecting device 4 by the indicating device 3.
Is instructed to detect the area, a message indicating that the detection device 4 is instructed in the first display form is displayed at the position of the area, and the instruction device 3 causes the detection device 4 to detect the area other than the area. The display device 6 for displaying that the detection device 4 is instructed in the second display form is provided at the position of the region other than the region when instructed to detect the region, thereby achieving the above object. . 1 and 10, the invention according to claim 2 provides a focus detection device 4 for detecting a focus adjustment state of an optical system in an arbitrary region of a predetermined focus detection range 171, and a focus detection device. The present invention is applied to an optical device including a focus detection area indicating device 3 that indicates a region for focus detection by the device 4, and an observation device that displays an observation image of the visual field range 170 of the optical system including the focus detection range 171. When the focus detection device 4 is instructed by 3 to perform focus detection on the area within the focus detection range 171, the focus detection device 4 is displayed at the position of the area in the first display form. When the pointing device 3 is instructed by the pointing device 3 to perform focus detection on a region outside the focus detection range, the focus detection device 4 is displayed in the second display form at the position of the region outside the focus detection range. It is shown that a display device 6 to achieve the object described above that displays are. To explain with reference to FIG. 1, the optical device of the invention of claim 3 comprises a gaze position calculating means 2 for calculating the gaze position of the observer, and the focus detection area indicating device 3 is a calculation result of the gaze position calculating means 2. The focus detection device 4 indicates the area for focus detection based on the above. 1 and 10, in the optical device according to the invention of claim 4, in the display device 6, the focus detection device 4 adjusts the focus of the optical system in the area within the focus detection range 171 indicated by the indication device 3. When the state can be detected, it is displayed at the position of the area designated by the pointing device 3 that the focus detecting device 4 is instructed in the third display form different from the display form before focus detection, and the pointing device 3
When the focus detection device 4 cannot detect the focus adjustment state of the optical system in the area within the focus detection range 171 designated by the above, the display form before the focus detection and the third state at the position of the area designated by the indication device 3 are performed. A display indicating that the focus detection device 4 is instructed is displayed in a fourth display form different from the display form.
When described in association with FIGS.
In the optical device of the invention described above, the display device 6 can display that the focus detection device 4 is instructed at any position in the visual field range 170 of the optical system instructed by the instruction device 3. A display element 181 corresponding to the entire visual field range 170 is provided. To explain in association with FIG. 10,
In the optical device of the sixth aspect of the present invention, the optical device is a camera, and the observation device is a finder that displays a subject image in the finder field including the focus detection range 171. 1 and 10, the invention of claim 7 relates to a detection device 4 or 8 for detecting the focus adjustment state of an optical system or the brightness of an object captured by the optical system, and the detection device 4.
Alternatively, the detection area designating device 3 for designating the area to be detected by 8
And an observation device for displaying an observation image in the visual field range 170 of the optical system, and the detection device 4 or 8 is instructed by the instruction device 3 to detect an area in the visual field range 170. When it is present, the fact that the detection device 4 or 8 is instructed is displayed at the position of that region in the first display form, and the detection device 4 or 8 is caused to detect the region outside the visual field range 170 by the instruction device 3. When the instruction is given, a display device 6 is provided at a predetermined position within the visual field range 170 in the second display form to display that the detection device 4 or 8 is indicated outside the visual field range 170. To achieve. Explaining in association with FIG. 1, the optical device of the invention of claim 8 comprises a gaze position calculating means 2 for calculating the gaze position of the observer, and the detection area designating device 3 displays the calculation result of the gaze position calculating means 2. Based on this, an area to be detected by the detection device 4 or 8 is designated. 1 and 10, in the optical device according to the invention of claim 9, the detection device 4 detects the focus adjustment state of the optical system in an arbitrary region of the detection range set within the visual field range 170. In the case of the focus detection device 4, the display device 6 includes the detection range 1 indicated by the indication device 3.
When the focus detection device 4 can detect the focus adjustment state of the optical system in the area 71, the focus detection device 4 is displayed in the area indicated by the indication device 3 in the third display form different from the display form before focus detection. Is displayed, and when the focus detection device 4 cannot detect the focus adjustment state of the optical system in the area within the detection range 171 designated by the pointing device 3, the area designated by the pointing device 3 is displayed. It is displayed that the focus detection device 4 is instructed in a fourth display form different from the display form before focus detection and the third display form. Figures 1 and 5
In the optical device according to the invention of claim 10, the display device 6 causes the detection device 4 to detect any position in the visual field range 170 of the optical system indicated by the indication device 3.
Alternatively, the display elements 18 corresponding to the entire visual field range 170 can be displayed to indicate that 8 or 8 has been designated.
1 is provided. When described in association with FIG.
In the optical device of the first invention, the optical device is a camera,
The observing device is a finder that displays a subject image in the finder field including the detection range 171.

In the optical device according to the first aspect of the present invention, the display device 6 displays the area of the detection device 4 when it is instructed by the detection area indicating device 3 to detect the area provided in the visual field range. The detection device 4 in the first display form at the position
Indicates that the detection device 4 is instructed to detect an area other than the area, and the detection device 4 is instructed in the second display form at the position of the area other than the area. Is displayed. In the optical device of the invention of claim 2,
When the focus detection device 4 instructs the focus detection device 4 to detect the focus adjustment state in any region of the focus detection range 171, the display device 6 displays the first display form at the position of the region. When it is instructed to detect the focus adjustment state in an area outside the focus detection range 171, the focus detection apparatus 4 is displayed at the position of the area in the first display form. Display that 4 is instructed. In the optical device according to the third aspect of the invention, the focus detection area designating device 3 designates the area for focus detection based on the calculation result of the gaze position calculating means 2. In the optical device according to the invention of claim 4, the display device 6 is
If the focus detection device 4 can detect the focus adjustment state of the optical system in the area indicated by the pointing device 3, the pointing device 3
The focus detection device 4 is displayed in the third display form at the position of the area indicated by, and if it is not detected, the focus detection device 4 is displayed in the fourth display form. In the optical device according to the fifth aspect of the present invention, the fact that the focus detection device 4 is instructed is displayed using a part of the display element 181 provided in the entire visual field range 170. In the optical device of the invention of claim 7, when the detection device 4 or 8 is instructed by the detection region indicating device 3 to detect the region within the visual field range 170, the display device 6 is located at the position of the region. The display device 1 displays that the detection device 4 or 8 is instructed, and displays the second display form when instructed to detect the area outside the visual field range 170. In the optical device of the invention of claim 8, the detection area designating device 3 designates the area detected by the detection device 4 or 8 based on the calculation result of the gaze position calculating means 2. In the optical device according to the invention of claim 9, when the focus detection device 4 can detect the focus adjustment state of the optical system in the region within the detection range 171 indicated by the indication device 3, the display device 6 indicates the indication device 3 The focus detection device 4 is instructed in the third display form in the area indicated by, and when the focus adjustment state of the optical system cannot be detected, the fourth display form is displayed. In the optical device according to the invention of claim 10, the display element 1 provided in the entire visual field range 170.
A part of 81 is used to display that the detection device 4 or 8 is instructed.

In the meantime, in the section of the means for solving the above-mentioned problems which explains the constitution of the present invention, the drawings of the embodiments of the present invention are used to make the present invention easy to understand, but the present invention However, the present invention is not limited to the embodiment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. -First Embodiment- (a) Description of Functional Block Diagram FIG. 1 is a first embodiment in which the display device according to the present invention is applied to a camera having a line-of-sight detection function, and the function is blocked. It is the converted functional block diagram. Reference numeral 1 denotes a calculation unit that controls the entire camera according to the present embodiment. A gaze position calculation unit 2 observes the eyeball of the photographer and calculates the gaze position of the photographer on the finder display screen based on the observation result. The calculation result is input to the AF sensor position control unit 3 and the display position control unit 6a of the display device 6 described later.

The AF sensor position control section 3 moves the AF sensor 4 to a predetermined position based on the calculation result of the gaze position calculation section 2. At the position moved by the AF sensor position control unit 3, the AF sensor 4 adjusts the focus adjustment state of the photographing lens with respect to the subject included in the focus detection area, that is, the focus adjustment state of the photographing optical system (not shown in FIG. 1). To detect. The detection result is input to the arithmetic unit 1. A lens driving unit 5 drives the photographing lens to the driving position calculated by the calculation unit 1 based on the detection result of the AF sensor 4.

The display device 6 includes a display position control unit 6a and a display unit 6b. The display position control unit 6a determines the display position of the display unit 6b on the basis of the calculation result of the gaze position calculation unit 2. The display position by the display unit 6b is moved so as to display the position. The display unit 6b performs a predetermined display at the display position. The photometric sensor 8 measures the field brightness based on the calculation result of the gaze position calculation unit 2. 9
Is an exposure unit that records subject information on a recording medium such as a film. When a film is used, the exposure unit includes a shutter and a diaphragm to expose the film.

(B) Description of Each Part of Camera b-1: Description of Optical System FIG. 2 is a diagram showing the overall configuration of the camera of the present embodiment, and is a schematic configuration diagram including the optical system. In FIG. 2, reference numeral 101 denotes a taking lens, which is illustrated as a single lens for convenience, but actually includes a plurality of lenses. A quick return mirror 102 has a half mirror at its center. 103 is a focusing screen on which a subject image is formed,
It corresponds to the viewfinder display screen observed by the photographer. Some of the focusing screens 103 also use a Fresnel lens and also serve as a condenser lens. Reference numeral 104 denotes a pentaprism, and 105 denotes an eyepiece lens, which is shown as a single lens for convenience, but may actually have a plurality of lenses. The eyepiece lens 105 according to the embodiment of the present invention includes a dichroic mirror 105a as a light splitting device. 106
Is the eyeball of the photographer.

Reference numeral 107 denotes a release switch, which is instructed to start driving various functions of the camera by operating this switch. Reference numeral 108 denotes a central processing unit for controlling the entire camera, which is composed of, for example, a microcomputer and includes a CPU, ROM, RAM and the like. When the release switch 107 is turned on, a command is sent from the central processing unit 108 to each device, and various operations are executed according to a camera control procedure described later.

B-2: Description of gaze position calculating device and its surroundings 109 is a gaze position calculating device, which calculates the gaze position of the photographer's eyeball 106 on the viewfinder display screen and controls each device shown below. , The gaze position of the eyeball 106 of the photographer is calculated based on the detection signal detected by each device. The method of calculating the gaze position will be described later. The calculated gaze position information is the AF sensor moving device 1 described later.
17 and the display position control unit 119.

Reference numeral 110 is a lighting device driving device, and 111 is a lighting device. Lighting and turning-off of the lighting device 111 is controlled by the lighting device driving device 110, and illuminates an eyeball 106 of a photographer such as below a viewfinder eyepiece window (not shown). It is located in a position where you can. Although only one lighting device 111 is shown in FIG. 2, a plurality of lighting devices 111 may be arranged depending on the gaze position calculation method. An infrared light emitting diode is suitable for the illuminating device 111 because it is preferable to illuminate the eyeball 106 of the photographer with a light beam other than visible light.

An image forming lens 112 forms an eyeball image of the photographer on the photoelectric conversion element 113. Imaging lens 11
When an aspherical lens is used as 2, an eyeball image can be formed on the photoelectric conversion element 113 by using one aspherical lens. Photoelectric conversion element 113 for picking up an eyeball image
Is suitable for a surface light receiving element such as a CCD although it depends on the calculation method of the gaze position. The imaged information is sent to the gaze position calculation device 109. Reference numeral 114 denotes a photoelectric conversion element driving device that drives the photoelectric conversion element 113.

B-3: Description of AF sensor and its surroundings 115 is a sub-mirror, which is a quick return mirror 1.
The subject light transmitted through the half mirror provided at the center of 02 is guided to the AF sensor 116. AF sensor 116
Detects the focus adjustment state of the photographing lens 101 with respect to the subject included in the focus detection area, and detects the central processing unit 108.
Send to An AF sensor moving device 117 moves the AF sensor 116 in a plane parallel to a planned focal plane, which will be described later, based on a signal from the gaze position calculation device 109.
Move dimensionally.

FIG. 3 shows the AF sensor 116 and the AF sensor moving device 117, and 150 is the AF sensor 11.
The AF module of 6 detects the focus adjustment state of the taking lens 101 with respect to the subject included in the focus detection area. Reference numerals 160 and 161 denote uniaxial stages, respectively, and the pair of uniaxial stages 160 and 161 constitute an AF sensor moving device 117. Uniaxial stage 16
0 base 160a is fixed to the camera body, and base 161a of uniaxial stage 161 is mounted on moving base 160b of uniaxial stage 160.
Is mounted on the moving table 161b of the uniaxial stage 161.

The moving direction of the uniaxial stage 160 is set to the short side direction of the film, and the moving direction of the uniaxial stage 161 is a direction orthogonal to the moving direction of the uniaxial stage 160.
That is, it is set in the long side direction of the film. As a result, the AF module 150 can move independently in the short-side direction and the long-side direction of the film, so that the focus detection area can move independently in the short-side direction and the long-side direction of the film within the planned focal plane. Further, it becomes possible to move to any position within a two-dimensional range defined by the strokes of the uniaxial stages 160, 161.

Various types of the AF module 150 are known as specific configurations, and the techniques have already been put into practical use. Therefore, only a brief description will be given in this specification. FIG. 4 is a diagram showing a specific configuration of the AF module 150. The AF module 150 is arranged in the vicinity of the planned focal plane conjugate with the film surface, the field mask 151 having an opening 151a, the field lens 152, and
A diaphragm mask 153 provided with a pair of openings 153a and 153b, and a pair of re-imaging lenses 154a and 154b.
And a substrate 155 on which the pair of photoelectric conversion elements 155a and 155b are arranged. The opening 151a is AF
The focus detection area in which the focus adjustment state is detected by the module 150 is set, and the size of the opening 151a and the position on the planned focal plane define the size and position of the focus detection area. The photoelectric conversion elements 155a and 155b
It is possible to provide a plurality of focus detection areas or reduce the size of the focus detection areas by dividing and using the information obtained from the above.

The exit pupil 156 of the taking lens 101 includes a pair of regions 156a and 156b, and the light flux passing through these regions 156a and 156b is the field mask 151.
A primary image is formed in the vicinity. Aperture 1 of field mask 151
The primary image formed on 51a is the field lens 15
2. A pair of apertures 153a and 153b of the diaphragm mask 153
The pair of re-imaging lenses 154a and 154b re-images as a pair of secondary images on the pair of photoelectric conversion elements 155a and 155b. A pair of photoelectric conversion elements 155
An output signal of a secondary image is generated by a and 155b and transmitted to the central processing unit 108. The central processing unit 108 calculates the defocus amount of the taking lens 101 based on this output signal. In this way, the defocus amount of the taking lens 101 with respect to the subject included in the focus detection area, that is, the focus adjustment state is detected.

Returning to FIG. 2, reference numeral 118 denotes the taking lens 101.
This is a photographic lens driving device for driving, and methods using various motors have been widely known and put into practical use, and therefore details thereof will not be mentioned here.

B-4: Description of display device and its periphery In FIG. 2, 119 and 120 are the same as the display position control unit 6a and the display unit 6b shown in FIG. 1, respectively. In the figure, 121 is a mirror, 122 is an optical member, and the light flux emitted from the display unit 120 is reflected by the pentaprism 1.
It is guided to the front reflecting surface 104a of No. 04, and further enters the penta prism 104 to be guided into the visual field of the eyeball 106 of the photographer. Therefore, the reflection angle of the mirror 121, the shape of the optical member 122, the refractive index, etc. are determined so as to satisfy this condition.

The display position control unit 119 controls the LED in the display unit 120 based on the signal from the gaze position calculation device 109.
Control the turning on and off. The display unit 120 is arranged at a position opposite to the eyeball 106 of the photographer with the pentaprism 104 interposed therebetween. As shown in FIG.
LEDs x vertical n LEDs 181 are arranged in a grid pattern.
The light flux emitted from each of the LEDs 181 is reflected by the mirror 121 shown in FIG. 2, guided through the reflection surface 104a of the pentaprism 104 into the pentaprism 104 through the optical member 122, and further passed through the photographing lens 101. It is superimposed on the light and reaches the eyeball 106 of the photographer.

Display unit 120 in viewfinder field of view
The display area of and the exposure range 170 described later substantially match. In the embodiment of the present invention, the gaze position calculation device 109
The display position control unit 119 is controlled according to the gaze position calculated in step S1, and the LED 181 corresponding to the gaze position is turned on. As a result, the photographer can detect the position where he or she gazes with the AF sensor 1
Whether or not 16 is actually detecting the focus can be confirmed by the lit LED 181.

Returning to FIG. 2, 123 is a photometric device,
The field brightness is measured and the brightness information is sent to the central processing unit 108. With respect to the specific configuration of the photometric device 123, various methods have been known and put into practical use, and therefore the details thereof will not be described here. Reference numeral 124 denotes a shutter curtain, which is driven to perform an exposure operation on a film surface (not shown).

B-5: Operation Next, the operation will be described. When the photographer contacts the viewfinder, the eyeball 106 of the photographer is illuminated by the illumination device 111, and the reflected image of the eyeball 106 is captured by the photoelectric conversion element 113 via the imaging lens 112. When the information on the captured reflected image of the eyeball 106 is input to the gaze position calculation device 109, the gaze position calculation device 109, based on the information from the photoelectric conversion element 113, the eyeball 106 of the photographer on the finder display screen. The gaze position of is calculated.

Regarding the specific procedure for calculating the gaze position by the gaze position calculation device 109, various procedures have already been proposed, such as Japanese Patent Application Laid-Open Nos. 6-94978 and 6-347866. Although any procedure may be used, an outline of an example of the calculation procedure will be described below.

FIG. 6 is a perspective view of a human eyeball. The gaze position of the eyeball 106 of the photographer can be obtained by calculating the eyeball rotation angles θ and φ defined below. It should be noted that although there are other crystalline lenses in human eyes, they are omitted because they do not affect the gaze position calculation method used here.

In FIG. 6, 106 is the eyeball of the photographer, 1
30 is a cornea and 131 is an iris. First, as shown in FIG. 6, an arbitrary three-dimensional coordinate is taken in the eyeball 106, and its origin O is in the eyeball 106. The photographer's eyeball 106 facing an arbitrary direction is located at a position where the eyeball rotation center O ′ is deviated from the origin O by a parallel movement amount L in the X axis direction and a parallel movement amount K in the Y axis direction. Then, a straight line O′C connecting the eyeball rotation center O ′ and the corneal curvature center C located at a position separated by a distance ρ from the eyeball rotation center O ′, and the eyeball rotation center O ′.
And a straight line O′D that connects the pupil center D at a position away from the eyeball rotation center O ′ by a distance A is in substantially the same direction,
That is, it is assumed that the eyeball rotation center O ′, the corneal curvature center C, and the pupil center D are on the same straight line. If an angle formed by a straight line DC connecting the corneal curvature center C and the pupil center D with respect to the Y axis on the XY plane is defined as θ and an elevation angle from the XY plane is defined as φ, an eyeball rotation angle θ obtained by this is defined. , Φ. At this time,
The components of the distance D-C between the corneal curvature center position C on the Z axis and the pupil center D in the X axis direction and the Z axis direction are:

[Equation 1] Therefore, the required eyeball rotation angles θ and φ are

(Equation 2) It is expressed as Here, A−ρ is the distance between the pupil center D and the corneal curvature center C.

In practice, it is necessary to correct the image forming magnification of the image forming lens 112. Furthermore, the direction the photographer is actually looking at is the angle γx by the photographer with respect to the line direction of the straight line DC,
Since there is a deviation of γz, it is necessary to correct this angle.

The pupil center D and the corneal curvature center C are obtained as follows, for example. FIG. 7A is a diagram showing the relationship between the front part of the eyeball 106 of the photographer and the imaging range of the photoelectric conversion element 113, and FIG. 7B is a diagram showing an image captured by the imaging conversion element 113. It is a figure which shows the output along the line segment AA 'of Fig.7 (a).

In FIG. 7A, 139 is an image of the front part of the eyeball 106 of the photographer, 140 is an image of the imaging range of the photoelectric conversion element 113 superimposed on the anterior eye image 139, 131 is an iris, 132 Is a sclera and 133 is a pupil part. 134
a and 134b are two lighting devices 1 not shown in FIG.
11 is a Purkinje first image by 11, and a line segment AA ′ indicates one of the pixel readout columns of the photoelectric conversion element 113.

In FIG. 7B, the horizontal axis corresponds to A at the left end and A ′ at the right end, the horizontal axis corresponds to the position on the line segment AA ′, and the vertical axis corresponds to the photoelectric conversion element 113. Represents the output of. 141 is the output of the iris 131, 142 is the output of the sclera 132, 143 is the output of the pupil 133, 144
a and 144b are Purkinje first images 134a and 1a, respectively.
34b shows the output. Dx _L and Dx _R are
The position of the edge of the iris 131 (inner end of the iris 131) is shown, and P1x and P2x are Purkinje first images 134a and 13
The position of 4b is shown. X coordinate Dx, Z of the pupil center D
Coordinate Dz is

(Equation 3) It is expressed as Dx _L and Dx _R are line segments A as described above.
Determined from the output of the photoelectric conversion element 113 along A ′,
Dz _L and Dz _R are obtained from the output of the pixel column along the direction intersecting the line segment AA ′.

Further, as shown in FIG. 8, the corneal curvature center C
Can be obtained from the relationship between the two illuminating devices and two straight lines passing through the Purkinje first image. In FIG. 8, S
1 and S2 are illumination devices, and P1 and P2 are Purkinje first images by the illumination devices S1 and S2, respectively. The corneal curvature center C to be obtained is an intersection of a straight line passing through the illuminating device S1 and the Purkinje first image P1 and a straight line passing through the illuminating device S2 and the Purkinje first image P2.

From the above consideration, the eyeball rotation angles θ and φ of the photographer can be obtained by using the expressions (3) and (4), and the eyeball rotation angles θ and φ of the photographer and the eyeball of the photographer. 10
From the positional relationship between 6 and the viewfinder display screen, the gaze position of the photographer on the viewfinder display screen can be obtained.

Returning to FIG. 2, the gaze position information calculated by the gaze position calculation device 109 is the AF sensor moving device 117.
And is sent to the display position controller 119. The AF sensor moving device 117 uses the above-mentioned AF module 150 as the planned focal plane so that the gaze position of the photographer's eyeball 106 on the finder display screen and the focus detection area of the AF sensor 116 match on the finder display screen. Drive in the two-dimensional direction. The focus adjustment information from the AF sensor 116 is input to the central processing unit 108, the central processing unit 108 obtains the defocus amount based on this focus adjustment information, drives the taking lens 101, and detects the focus detection area of the AF sensor 116. An in-focus state can be obtained for a subject contained within. On the other hand, the display position control unit 1
Reference numeral 19 lights a predetermined LED 181 in the display unit 120 so that the gaze position of the photographer's eyeball 106 on the finder display screen and the irradiation light from the LED 181 match on the finder display screen.

In this way, when the gaze position of the eyeball 106 of the photographer moves, the focus detection area of the AF sensor 116 and the irradiation position of the irradiation light of the LED 181 move on the viewfinder display screen accordingly. Eyeball 10
At the gaze position 6 and its vicinity, the AF sensor 11
The focus adjustment state of the photographing lens 101 is detected by 6, and the area on the finder display screen corresponding to the gaze position is illuminated by the irradiation light of the LED 181.

FIG. 9 is a diagram showing the relationship between the gaze position display mark indicating the gaze position displayed in the viewfinder field and the focus detection area. 172 is a focus detection area, which is LE
A gaze position display mark is formed by turning on D200a to 200h. LEDs 200a-200
The symbol h indicates that the LED 181 of the display unit 120 shown in FIG. 5 is turned on in a cross shape, and the LED located at the center of the cross indicating the gaze position is turned off, and the photographer wants to see the most. The gaze position is easy to see. Further, since the focus detection area 172 is not actually displayed and cannot be directly recognized by the photographer, the focus detection area 172 is at the center of the gaze position display mark as shown in FIG. It is possible to know which position in the visual field the focus is detected. In FIG. 9, when the coordinates of the LED 181 located at the center of the cross are (m, n) and the LEDs 200a to 200h that are lit are represented by the coordinates,
200a is (m-2, n), 200b is (m-1,
n), 200c is (m + 1, n), and 200d is (m +
2, n), 200e is (m, n-2), 200f is (m, n-1), 200g is (m, n + 1), 200h.
Becomes (m, n + 2).

FIG. 10 is a diagram showing the relationship between the focus detectable area, the focus detection area and the gaze position display mark according to the present invention, where 170 is the exposure area and 171 is the focus detectable area. Note that the focus detectable range 171 is invisible to the photographer in the present embodiment. Focus detectable area 17
Reference numeral 1 denotes a range in which the focus can be detected by the AF sensor 116, and each uniaxial stage 160, 1 shown in FIG.
It is determined by the stroke of 61. In FIG. 10, the focus detectable range 171 does not match the exposure range 170 and is limited to a narrow range because the focus detectable range 171 is the stroke of the stages 160 and 161 and the sub-mirror 11.
This is because it is physically determined by the size of 5 and the stage having a stroke of sufficient length and the exposure range 17
If the apparatus is configured with the sub-mirror 115 that reflects the light flux in the entire range of 0 to the AF module 150, the exposure range 1
Focus detection becomes possible in all areas of 70.

The shape of the focus detection area 172 is rectangular in the embodiment of the present invention, but generally, a cross shape or an H shape having a plurality of discrete focus detection areas is known. ing. The shapes of these are determined by the configuration of the AF module 150, and the details thereof are different from the gist of the present invention, and therefore the description thereof will be omitted. Further, when the AF module 150 moves toward the periphery of the exposure range 170, vignetting may occur because focus detection is performed using the light flux at a position greatly apart from the optical axis of the taking lens 101. In this case, a ROM is mounted on the taking lens 101, and the exit pupil information unique to the taking lens is stored in the central processing unit 108.
The vignetting portion may be corrected by sending the data to

FIG. 11 shows a scene actually seen when the photographer looks into the viewfinder of the camera according to this embodiment.
The image in which the gaze position display mark overlaps is visually recognized. This figure shows that the photographer is gazing near the left eye of the subject, and if the photographer changes the gaze position, the position of the LED 181 that lights up also changes accordingly. In the embodiment of the present invention, the display unit 120 has the exposure range 170.
While the focus detection area 171 is limited to a range smaller than the exposure range 170 as shown in FIG. Therefore, the focus detectable range 172
Since the frame that indicates is not actually displayed, when the photographer tries to focus on the peripheral portion of the screen, a means for knowing whether or not focus detection is possible for that area is required.

In this embodiment, as shown in Table 1, by changing the shape and color of the gaze position display mark,
Whether or not the position indicated by the gaze position display mark is within the focus detectable range, and whether or not focus detection was actually possible at that position after the release half-press operation is indicated.

[Table 1]

When the gaze position is within the focus detectable range 171, it is classified into three as follows. The first is before the release half-press operation, that is, before the focus detection area is specified, the second is after the focus detection area is specified, and the focus detection succeeds at the specified position. The third is for some reason after the focus detection area is specified. , For example, when focus detection fails due to insufficient light quantity of the subject. A green cross mark, a green circle mark, and a red X mark gaze position display mark are displayed, respectively. On the other hand, the gaze position is the focus detectable range 171.
If the focus detection area is outside the exposure range 170, the focus detection areas are classified into those before designation and those after designation, and an orange cross and a red gaze position display mark are displayed, respectively. In the case of the cross mark, the central LED indicating the gaze position is not illuminated and displayed as described above.

When the photographer gazes at a portion other than the focus detectable area for determining the composition, etc., the focus detection area is changed from green to orange before the focus detection area is designated. I am trying to inform that it is outside 171. Furthermore, if the focus detection area is specified, the photographer does not know that the focus detection is not possible at the mark position, or the user forgets that the focus was detected, and it is considered that the focus has been specified. Is displayed to call the photographer's attention. In this case, if the photographer cancels the designation, it is desirable to immediately return to the display before the designation. Red x
A warning sound or the like may be emitted together with the display of the mark to call the photographer's attention.

In the example shown in Table 1, the display color and shape are changed for each situation for distinction, but as shown in Table 2, only the shape of the gaze position display mark may be changed for distinction. However, as shown in Table 3, it may be distinguished by a color change and blinking. In addition to turning on / off the LED 181, one form includes blinking and changes in the blinking cycle.
A case where the gaze position display mark is simultaneously displayed in a plurality of colors is also included in one form.

[Table 2]

[Table 3]

FIG. 12 shows an example in which the gaze position display marks of circles and crosses are displayed by the LED 181, where (a) is a circle and (b) is a cross. In the figure, the + mark indicates the position of the LED 181 corresponding to the gaze position. If the coordinates of this LED 181 are (m, n), the coordinates of the LEDs 181 forming the mark of (a) are (m).
-2, n + 1), (m-2, n), (m-2, n-
1), (m-1, n-2), (m, n-2), (m +
1, n-2), (m + 2, n-1), (m + 2, n),
(M + 2, n + 1), (m + 1, n + 2), (m, n +
2) and (m-1, n + 2). On the other hand, the coordinates of the LEDs 181 forming the mark (b) are (m +
2, n + 2), (m + 1, n + 1), (m, n), (m
-1, n-1), (m-2, n-2), (m-2, n +
2), (m-1, n + 1), (m + 1, n-1), (m
+2, n-2).

13 to 16 show a subject image visually recognized by the photographer and the LED 18 when the photographer looks through the finder.
It is an example of an image in which the display by 1 overlaps. 13 and 14 show the case where the gaze position is within the focus detectable range 171, and FIG. 13 shows the case where the focus detection is successful.
FIG. 14 is a diagram corresponding to FIG. 14A, and FIG. 14 is a diagram corresponding to FIG. 12B when focus detection fails. On the other hand, FIGS. 15 and 16 show the case where the gaze position is in the exposure range outside the focus detection possible range 171, FIG. 15 being an example before designation of the focus detection region and FIG. 16 being an example after designation of the focus detection region. .

In FIGS. 17 and 18, the photographer sets the exposure range 1
It is a display example when gazing at a viewfinder display or the like outside 70. Originally, it is not necessary to display the mark indicating the gaze position of the photographer at this position, but if the mark is displayed, the photographer can know whether the gaze position is detected correctly. FIG. 17 shows the case where the photographer gazes at the position 173 in the display 174 on the right side of the exposure range 170, and as shown in the figure, L on the display 174 side of the exposure range 170 is displayed.
The three EDs are lit in a horizontal row, and the extension of the ED gaze position 17
It is displayed that there is 3. FIG. 18 shows the exposure range 17
0 shows the case where the position 176 in the display 175 on the lower side of 0 is focused, and in this case, the display 17 of the exposure range 170 is displayed.
Three LEDs on the 5 side are lit up in a vertical line to indicate that the gaze position 176 is on the extension line. Even when the gaze position is on the left side or the upper side of the exposure range 170,
The display is performed similarly. Note that the display form of the mark does not have to be the one-line display as described above, and the display form is different from the mark when the gaze position is within the exposure range 170, and it is recognized that the gaze position is outside the exposure range 170. Anything can be used.

19 and 20 are flow charts showing an example of the operation of the camera which performs the above-mentioned display. When the photographer turns on the main switch of the camera, the routine starts, and the process proceeds to step S1. In step S1, it is determined whether or not the photographer is in contact with the viewfinder eyepiece window. If the eyepiece is in contact, the process proceeds to step S2. If not, the process proceeds to step S15. In step S2, the gaze position of the photographer on the finder screen is detected, and the process proceeds to step S3. Step S3 is a step of determining whether or not the gaze position is within the focus detectable range 171, and if the gaze position is within the focus detectable range 171, the process proceeds to step S4, and otherwise, the step of FIG. S
Proceed to 17.

In step S4, it is determined whether or not the switch SW1 which is turned on by pressing the release button halfway is in the on state. If it is on, the process proceeds to step S5, and if it is off, the process proceeds to step S14. After the green cross mark is displayed at the gaze position, the process returns to step S1. In step S5, focus detection is performed at the gaze position, and then in step S5.
Proceed to 6. In step S6, it is determined whether or not the focus detection is successful. If the focus detection is successful, the process proceeds to step S7; otherwise, the process proceeds to step S12. In step S7, a green round gaze position display mark is displayed at the gaze position, and the process proceeds to step S8. In step S8, it is determined whether or not the switch SW2, which is turned on by fully pressing the release button, is in the on state.
9. If off, go to step S11. In step S9, the photographing lens is driven based on the focus detection information, and then the process proceeds to step S10, and the photographing operation, that is, the shutter or the like is driven to expose the film and the routine ends.

When the process proceeds to step S11 in step S8, whether SW1 is turned on in step S11,
That is, it is determined whether or not the half-pressed state of the release button is continued, and if it is on, the process returns to step S8, and if it is off, the process returns to step S1. If the focus detection is not successful in step S6 and the process proceeds to step S12,
In step 12, the red x mark is displayed at the gaze position and step S
Proceed to 13. In step S13, it is determined whether or not the switch SW1 is on, and if it is off, the process returns to step S1.

If the process proceeds to step S17 in step S3, the gaze position is set to the exposure range 17 in step S17.
If it is within the exposure range 170, the process proceeds to step S18, and if it is outside the exposure range 170, the process proceeds to step S21. In step S18, it is determined whether or not the switch SW1 is on. If it is on, the process proceeds to step S19 to display a red x mark at the gaze position and returns to step S18. Repeat S19. On the other hand, if the switch SW1 is off in step S18,
The process proceeds to step S20, the orange + mark is displayed at the gaze position, and the process returns to step S1.

When the process proceeds to step S21 in step S17, the one-line mark as shown in FIGS. 17 and 18 is displayed in red, and the process proceeds to step S22 to change to the viewfinder display outside the exposure range 170. Executes an out-of-screen routine when there is a gaze position. The routine of step S22 is a routine for performing operations such as changing the photometry mode and exposure mode, zooming, etc. by the photographer gazing at the viewfinder display. What is the content of this routine in the present invention? However, it is not limited to the contents described above.

In step S1, if the photographer has not touched the viewfinder eyepiece window and proceeds to step S15, it is determined whether or not the switch SW1 has been half-pressed in step S15. If so, focus detection of a predetermined area set in advance is performed, and the process proceeds to step S16 to execute the photographing routine. When step S16 ends, the routine of this flow ends.

FIG. 21 shows a modification in which the operations of steps S30 and S31 are added after step S19 of FIG. In this modification, if the red x mark is displayed in step S19, the process proceeds to step S30. Step S30 is a step of determining whether or not the switch SW2 is on, that is, whether or not the release button is fully pressed. If SW2 is on, the process returns to step S18, and S
If W2 is off, the process proceeds to step S31. Step S
At 31, an error display indicating that photographing is not possible at the gaze position is displayed on the finder display screen, and the process returns to step S1. The error display may be displayed in any form as long as it can be visually recognized by the photographer. The other steps are the same as those shown in FIGS. 19 and 20, and the description thereof will be omitted.

-Second Embodiment- FIGS. 22 and 23 are views showing a second embodiment in which the display device according to the present invention is applied to a camera having a visual axis detecting function. It is a flowchart explaining. The configuration of the camera is the same as that of the first embodiment, and the description is omitted. Further, in the flowcharts of FIGS. 22 and 23, steps having the same contents as those in the flowcharts shown in FIGS. 19 and 20 are designated by the same reference numerals, and the description will focus on the points different from the first embodiment.

In step S6, if it is determined that the focus detection is successful, the process proceeds to step S109, and if not, the process proceeds to step S12 to display a red x mark at the gaze position and then proceeds to step S110. Step S10
Reference numeral 9 is the same step as step S9 in FIG. 19, and after driving the taking lens based on the focus detection information, the process proceeds to step S7, and a green circle mark is displayed at the gaze position in step S7. In step S110, it is determined whether or not the switch SW2 is on, and if it is off, step S10
Returning to step 1, if it is on, the photographing operation is performed in step S10. In FIG. 23, steps S19, S20 and S
When the operation of each step of 22 is completed, the process returns to step S1 in any case. As described above, in the operation of the embodiment of the present invention, the release is prioritized over the focusing of the taking lens.

24 and 25 are flowcharts showing a modification of the above-described second embodiment. In step S19 of FIG. 25, if a red x mark is displayed at the gaze position, the process proceeds to step S200. Step S2
00 is a step for determining whether or not the switch SW2 is on, that is, whether or not the release button is fully pressed. If SW2 is on, the process proceeds to step S10 to perform the photographing operation. Other operations are the same as those in FIGS.

-Third Embodiment-This embodiment is an example in which the present invention is applied to an AE camera, and photometry is performed based on the gaze position of the photographer. In the present embodiment, as shown in FIG. 26, the exposure range 170 is divided into five divided areas E1 to E5, and the exposure value is determined based on the data obtained by photometrically measuring each of them. The focus detection is performed in a predetermined area, for example, a focus detection area 172 fixed at the center of the exposure range 170.
The number of divisions is not limited to five. Similar to the first embodiment, the gaze position of the photographer is displayed by the LEDs 200a to 200h, and the gaze position is in the divided area E1 in the figure. The exposure value is determined by the gaze position.
As shown in FIG. 26, the exposure value can be determined by making the weighting coefficient of the photometric data of the divided area E1 where the gazing position is present larger than that of the other divided areas. In this case, the photographer uses the LED
By visually recognizing the display by 200a to 200h,
The divided areas to be weighted can be confirmed.

FIG. 27 is a flow chart showing an example of the operation of the camera of this embodiment. The same steps as those in the first embodiment are designated by the same reference numerals, and the description will focus on the steps having different operations. If the gaze position is detected in step S2, the process proceeds to step S300 to determine whether the gaze position is within the exposure range 170. Step S3
In 00, when the gaze position is not within the exposure range 170, the process proceeds to step S21. On the other hand, if the gaze position is within the exposure range 170, the process proceeds to step S301, a green + mark is displayed at the gaze position, and the process proceeds to step S302. In step S302, the five divided areas E1 to E5
Exposure calculation is performed based on the photometric data of. At this time, as described above, the exposure value is calculated by making the weighting coefficient for the photometric data regarding the divided area E1 including the gaze position larger than the data of the other divided areas. Step S303
Is a step of determining whether or not the switch SW2 is on, that is, whether or not the release button is fully pressed,
If it is on, the process proceeds to S10, and if it is not on, the process returns to step S1.

In the above-described third embodiment, the gaze position is displayed by the green + mark, but it may be displayed in other display forms. Further, the display mark indicating the gaze position is used to display which divided area is weighted for photometric data. For example, the contour of the divided area (any one of E1 to E5) including the gaze position is displayed. A certain LED may be turned on and displayed.

In the embodiment of the invention described above, the arrangement of the LEDs 181 in the display section 120 is not limited to the arrangement shown in FIG. 5, but may be other arrangements. Further, although the LEDs arranged on the dot matrix are used as the display device, one set of LEDs for displaying the display forms shown in Tables 1 to 3 are arranged, and the irradiation light thereof is at any position within the visual field range. A display device that can be moved to another location may be used. Furthermore, a liquid crystal display device, an electroluminescence display, a fluorescent display tube, or the like may be used. Further, the display device may be arranged at a place where, for example, liquid crystal is applied on the finder screen for display, or a method of projecting light from the quick return mirror side onto the finder screen may be used. Further, in the embodiments of the first and second inventions, focus detection is possible at any position within the exposure range 170. However, for example, as shown in FIG. 28, a plurality of focus detection regions are formed within the exposure range 170. The display form may be changed depending on whether the gaze position is set in the focus detection area or in the area other than the focus detection area.

In the correspondence between the above-described embodiment of the invention and the scope of the claims, the AF sensors 4 and 116 are the detection device and the focus detection device, the photometric devices 8 and 123 are the detection devices, and the AF sensor position control unit 3 is used. , AF sensor moving device 11
7 is a detection area pointing device and a focus detection area pointing device,
The focus detectable range 171 constitutes a focus detection range, and the gaze position calculation unit 2 and the gaze position calculation device 109 respectively constitute gaze position calculation means.

[0065]

As described above, according to the present invention,
Within the visual field range of the optical system, the position of the area is displayed in different display modes depending on whether the detection area designating device indicates the area of the detectable range or the undetectable area. Since it is displayed, the observer can easily know whether the pointing position of the detection area pointing device is in the detectable range or the undetectable range. Particularly, in the invention of claim 2, the detectable range is a focus detectable range, and in the invention of claim 7, the detectable range is a visual field range. In the invention of claim 4, in the area within the focus detection range, whether or not the focus detection device has detected the focus adjustment state of the optical system is displayed in different display forms, and those display forms are different from those before detection. Therefore, the observer can easily visually recognize whether or not the focus can be detected. For example, in the case of a camera, since the focus detection state can be easily visually recognized, it is possible to avoid taking a photograph in which the subject is out of focus. According to the invention of claim 5, no matter which position in the visual field range is designated by the focus detection area designating device, the observer can visually recognize the position by the display.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a camera having a visual axis detection function according to the present invention.

2 is a schematic configuration diagram including an optical system of the camera of FIG.

FIG. 3 is a perspective view showing an AF sensor and an AF sensor moving device.

FIG. 4 is a perspective view illustrating a schematic configuration of an AF sensor.

FIG. 5 shows L in the display device according to the embodiment of the first invention.
The figure which shows arrangement | positioning of ED.

FIG. 6 is a diagram for explaining a gaze position calculation method.

FIG. 7A is a diagram in which an image pickup range of a photoelectric conversion element is superimposed on an anterior segment image of a photographer. FIG. 6B is a diagram showing an output example of the photoelectric conversion element.

FIG. 8 is a diagram showing a positional relationship between an illuminating device, a Purkinje first image, and a corneal curvature center position.

FIG. 9 is a diagram showing a relationship between a gaze position display mark and a focus detection area.

FIG. 10 is a diagram showing a relationship among a focus detectable area, a focus detection area, and a gaze position display mark.

FIG. 11 is a diagram showing a subject image and a gaze position display mark.

FIG. 12 is a diagram showing another display form example of a gaze position display mark.

FIG. 13 is a diagram showing a subject image and a gaze position display mark, in which the gaze position display mark is a circle.

FIG. 14 is a diagram showing a subject image and a gaze position display mark, where the gaze position display mark is a cross mark.

FIG. 15 is a diagram showing a subject image and a gaze position display mark, in which the gaze position is outside the focus detectable range and before the focus detection region is designated.

FIG. 16 is a diagram showing a subject image and a gaze position display mark, where the gaze position is outside the focus detectable range, and after the focus detection area is designated.

FIG. 17 is a diagram showing a display example when a photographer gazes at a finder display outside the exposure range.

FIG. 18 is a diagram showing another display example when the photographer gazes at the finder display outside the exposure range.

FIG. 19 is a flowchart illustrating an operation of the display device in the camera according to the first embodiment of the present invention.

FIG. 20 is a flowchart following FIG. 19;

FIG. 21 is a view showing a modified example of the flowchart for explaining the operation of the display device according to the embodiment of the first invention.

FIG. 22 is a flowchart illustrating an operation of the display device in the camera according to the second embodiment of the invention.

FIG. 23 is a flowchart following FIG. 23.

FIG. 24 is a view showing a modified example of a flowchart for explaining the operation of the display device according to the second embodiment of the invention.

FIG. 25 is a flowchart following FIG. 24.

FIG. 26 is a diagram illustrating a display device of a camera according to an embodiment of the third invention.

FIG. 27 is a diagram showing a modification of the flowchart for explaining the operation of the display device according to the third embodiment of the invention.

FIG. 28 is a diagram showing a relationship between an exposure range and a focus detection area of a conventional camera.

[Explanation of symbols]

 1 calculation unit 2 gaze position calculation unit 3 AF sensor position control unit 4, 116 AF sensor 5 lens drive unit 6 display device 6a, 119 display position control unit 6b, 120 display unit 8 photometric sensor 109 gaze position calculation device 117 AF sensor movement apparatus

Claims (11)

[Claims] 1. An observation device for displaying an observation image within a visual field range of an optical system, a detection device for detecting object information in an area provided within the visual field range, and detection of the detection device within the visual field range. A detection area pointing device that points to an area, and when the pointing device is instructed to detect the area, the position of the area is pointed to by the detection device in a first display form. Show that
When the detecting device is instructed to detect a region other than the region, a display indicating that the detecting device is instructed in a second display form at a position of the region other than the region An optical device comprising: a device. 2. A focus detection device for detecting a focus adjustment state of an optical system in an arbitrary region within a predetermined focus detection range, and a focus detection region designating device for designating a region for focus detection by the focus detection device. In an optical device including an observation device that displays an observation image of a visual field range of the optical system including the focus detection range, the focus detection device performs focus detection of a region within the focus detection range by the pointing device. When it is instructed that the focus detection device is instructed in the first display form at the position of the area, the instruction device causes the focus detection device to display an area outside the focus detection range. When instructed to detect the focus, a display device for displaying that the focus detection device is instructed in a second display form is provided at a position of an area outside the focus detection range. An optical device characterized by: 3. The optical device according to claim 2, further comprising a gaze position calculating means for calculating a gaze position of an observer,
The optical device, wherein the focus detection region designating device designates a region in which the focus detection device detects a focus based on a calculation result of the gaze position calculation means. 4. The optical device according to claim 2, wherein in the display device, the focus detection device can detect a focus adjustment state of an optical system in a region within a focus detection range indicated by the indication device. In this case, the fact that the focus detection device is instructed in a third display form different from the display form before focus detection is displayed at the position of the area indicated by the indication device,
When the focus detection device cannot detect the focus adjustment state of the optical system in the area within the focus detection range indicated by the indication device, the display form before focus detection at the position of the area indicated by the indication device and An optical device which displays that the focus detection device is instructed in a fourth display form different from the third display form. 5. The optical device according to claim 2, wherein the display device instructs the focus detection device to an arbitrary position in a visual field range of the optical system instructed by the instruction device. An optical device comprising a display element corresponding to the entire area of the visual field so that the display can be displayed. 6. The optical device according to claim 2, wherein the optical device is a camera, and the observation device is a viewfinder that displays a subject image in a viewfinder field including the focus detection range. An optical device characterized by being present. 7. A detection device for detecting a focus adjustment state of an optical system or a brightness of an object captured by the optical system, a detection region indicating device for indicating a region detected by the detection device, and a visual field range of the optical system. An optical device including an observation device that displays the observation image of 1., when the detection device is instructed to detect an area in the visual field range, the first display is provided at the position of the area. When the detection device is instructed to detect a region outside the visual field range, the first position is displayed at a predetermined position within the visual field range. 2. An optical device comprising a display device for displaying that the detection device is instructed to be out of the visual field range in a display form of No. 2. 8. The optical device according to claim 7, further comprising a gaze position calculating means for calculating a gaze position of an observer,
The optical device, wherein the detection region designating device designates a region detected by the detection device based on a calculation result of the gaze position calculating means. 9. The optical device according to claim 7, wherein the detection device detects a focus adjustment state of an optical system in an arbitrary region of a detection range set in the visual field range. In this case, the display device, when the focus detection device can detect the focus adjustment state of the optical system in a region within the detection range indicated by the pointing device, before focus detection in the region indicated by the pointing device. A third display form different from the display form indicates that the focus detection device is instructed, and the focus detection device can detect the focus adjustment state of the optical system in a region within the detection range indicated by the indication device. If not, it is displayed in the area designated by the pointing device that the focus detection device is designated in the display form before focus detection and the fourth display form different from the third display form. Optical device according to claim Rukoto. 10. The optical device according to claim 7, wherein the display device indicates the detection device to an arbitrary position within a visual field range of the optical system indicated by the indication device. The optical device is provided with a display element corresponding to the entire area of the visual field so that the display can be displayed. 11. The optical device according to claim 7, wherein the optical device is a camera, and the observation device is a viewfinder that displays a subject image within a viewfinder field including the detection range. An optical device characterized by the above.