JP6032030B2 - Imaging device - Google Patents

Description

  The present invention relates to an imaging device that images a subject and generates image data.

  Conventionally, an imaging apparatus such as a video camera or a still camera (excluding a single-lens reflex camera) includes a display unit such as a viewfinder and a liquid crystal monitor, and the imager is included in the angle of view by viewing the display unit. You can check the subject and background. However, for example, when the magnification is changed by zooming or the like, it is difficult to grasp which range the image displayed on the display unit shows in the entire field of view of the photographer. In particular, when shooting a moving object, the higher the magnification, the more difficult it is to frame the subject again when the subject is out of frame.

  Therefore, a finder device that projects signal light based on image data generated by an imaging unit onto a hologram concave mirror has been proposed (for example, Patent Document 1). The hologram concave mirror reflects the projection light, and allows the imager to visually recognize the image being captured as a virtual image and transmits light from the subject toward the imager. Since the imager can confirm both the subject and the virtual image of the object being imaged through the hologram concave mirror, the movement of the line of sight can be reduced.

JP-A-9-65183

  However, as shown in the above-mentioned Patent Document 1, if a configuration is such that a virtual image of a subject being imaged can be confirmed by a light transmission type reflection unit such as a holographic concave mirror, the virtual image of the subject is visually recognized overlapping the subject. Therefore, it may be difficult to see. Therefore, a configuration in which a virtual image of an angle-of-view frame indicating an angle of view is visually recognized by a light transmission type reflection unit is conceivable.

  In such a configuration, as with a liquid crystal monitor mounted on a general imaging device, it is also conceivable that the inclination angle of the reflecting unit is variable with respect to the optical axis direction of the optical system of the imaging unit. However, there are cases where the angle-of-view frame cannot be properly recognized depending on the tilt angle simply by making the tilt angle of the reflecting portion variable. At this time, there is a possibility that the photographer may recognize an incorrect field angle frame.

  Accordingly, an object of the present invention is to provide an imaging apparatus that can allow an imager to appropriately grasp an angle of view frame by avoiding erroneous recognition of the angle of view frame.

In order to solve the above-described problem, an imaging apparatus according to the present invention includes an imaging unit having an optical system that collects light from a subject, a tilt angle of the optical system with respect to the optical axis direction is variable, and light from the subject. And a display unit that includes a display surface that displays an angle frame indicating the imaging range of the imaging unit, and a tilt detection unit that detects the tilt angle of the display surface. The angle of view frame is displayed when the angle of view is included in the predetermined setting range as a range where the angle of view frame can be accurately grasped , and the display surface is visible when the angle of inclination is not included in the setting range. Even in such a case, the angle-of-view frame is not displayed.

  According to the present invention, it is possible to cause the photographer to appropriately grasp the angle-of-view frame by avoiding erroneous recognition of the angle-of-view frame.

It is the functional block diagram which showed the outline of the imaging device. It is a schematic external view of an imaging device. It is explanatory drawing for demonstrating an angle-of-view frame. It is explanatory drawing for demonstrating the relationship between a to-be-photographed object, a reflection part, a reference | standard frame, and an angle-of-view frame. It is explanatory drawing for demonstrating the relationship between a focal distance and a field angle. It is explanatory drawing for demonstrating the relationship between a view angle and the length of a view angle frame. It is a flowchart for demonstrating the flow of a process of a display control method. It is the functional block diagram which showed the outline of the imaging device in a modification. It is a schematic external view of the imaging device in a modification.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Imaging device 100)
FIG. 1 is a functional block diagram illustrating an outline of the imaging apparatus 100, and FIG. 2 is a schematic external view of the imaging apparatus 100. As illustrated in FIG. 1, the imaging apparatus 100 includes an operation unit 120, an imaging unit 122, an image processing unit 124, a buffer 126, an image output unit 128, a monitor 130, a compression unit 132, and an image holding unit. 134, a central control unit 136, a display unit 190, and a tilt detection unit 152. Here, the display unit 190 includes a light emitting unit 138, a mirror unit 140, a MEMS (Micro Electro Mechanical Systems) control unit 142, a drawing processing unit 144, a light emission control unit 146, an intermediate screen 148, and a reflection unit 150. It consists of.

  The operation unit 120 includes operation keys including a release switch, a cross key, a joystick, and the like, and accepts an operation input from the photographer. Further, a touch panel may be provided on the display surface of the monitor 130 described later, and the operation unit 120 may be used.

  The imaging unit 122 converts image data obtained from the imaging lens 170, a zoom lens 172 used for changing the angle of view, a focus lens 174 used for focus adjustment, an iris 176 used for exposure adjustment, and a light beam incident through the imaging lens 170. An image pickup device 178 that performs photoelectric conversion and a drive unit 180 that drives each of the zoom lens 172, the focus lens 174, and the iris 176 in accordance with a control signal from a central control unit 136 that will be described later. As described above, the imaging unit 122 includes an optical system that condenses the light from the subject 200, photoelectrically converts the collected light, generates image data, and outputs the image data to the image processing unit 124.

  The image processing unit 124 performs predetermined processing on the image data output from the imaging unit 122, and outputs the processed image data to the buffer 126. The buffer 126 is composed of SRAM (Static Random Access Memory) or the like, and temporarily holds image data.

  The image output unit 128 generates preview data for displaying a preview image based on the image data held in the buffer 126 on the monitor 130, and superimposes data such as OSD (On-Screen Display) on the monitor 130. Output. The monitor 130 includes a liquid crystal display, an organic EL (Electro Luminescence) display, and the like, and displays a preview image, OSD, and the like.

  The compression unit 132 encodes the image data held in the buffer 126 by a predetermined encoding method. The image holding unit 134 is configured by an EEPROM (Electrically Erasable Programmable Read-Only Memory), a flash memory, an HDD (Hard Disk Drive), and the like, and holds encoded image data.

  The central control unit 136 manages and controls the entire imaging apparatus 100 by a semiconductor integrated circuit including a central processing unit (CPU), a ROM storing programs, a RAM as a work area, and the like. In addition, the central control unit 136 controls the drive of the drive unit 180 in accordance with an operation input via the operation unit 120 to perform zoom processing.

  The light emitting unit 138 is configured by a laser or the like, for example, and emits light for visually recognizing a virtual image indicating an angle frame indicating the imaging range of the imaging unit 122. The mirror unit 140 is configured by a plane mirror, a concave mirror, or the like, reflects the light emitted by the light emitting unit 138, and guides it to the reflecting unit 150 described later.

  The MEMS control unit 142 controls the direction of the mirror unit 140. Specifically, the MEMS control unit 142 displaces the mirror unit 140 so that light from the light emitting unit 138 scans an intermediate screen 148 described later in the horizontal direction by, for example, self-excited oscillation by a coil and a magnet. Further, the MEMS control unit 142 outputs a synchronization signal (for example, a sine wave) indicating the self-excited oscillation period to the drawing processing unit 144.

  The drawing processing unit 144 obtains information such as the zoom magnification from the central control unit 136, and generates image data (hereinafter referred to as frame data) of an image showing a view angle frame. The generation of the frame data will be described in detail in the description of the frame data generation process.

  Then, the drawing processing unit 144 generates a horizontal synchronization signal that is synchronized with the self-excited oscillation period based on the synchronization signal, and further generates a vertical synchronization signal based on the horizontal synchronization signal and outputs the generated signal to the MEMS control unit 142. To do. Based on the vertical synchronization signal, the MEMS control unit 142 displaces the mirror unit 140 so that the light from the light emitting unit 138 scans the intermediate screen 148 in the vertical direction.

  In addition, the drawing processing unit 144 outputs to the light emission control unit 146 the frame data and light emission timing corresponding to each pixel when the frame data is scanned based on the horizontal synchronization signal and the vertical synchronization signal.

  The light emission control unit 146 causes the light emission unit 138 to emit light so that the luminances of RGB are based on the timing corresponding to each pixel.

  The intermediate screen 148 is configured by a transmissive screen, transmits light from the mirror unit 140, and projects it as an intermediate image on a surface on the reflection unit 150 side that is located on the opposite side of the mirror unit 140.

  The reflection unit 150 includes a combiner, and transmits light from the subject 200 by, for example, limiting the wavelength of light that is transmitted or reflected by surface coating processing. The light emitting unit 138 is projected on the intermediate screen 148. Reflects light from.

  2A, the reflecting unit 150 is installed on the main body 100a of the imaging apparatus 100 via a rotation mechanism 150a such as a hinge. As shown in FIG. 2A, the imaging unit 122 is provided. 2 (shown by a dashed arrow in FIG. 2A) (preferably the direction perpendicular to the display surface 150b and the optical axis of the optical system of the imaging unit 122). It is possible to adjust the angle from a state where the direction A is approximately parallel and the subject is positioned on the optical axis) to a position close to the main body 100a (storage position). Thereby, the inclination angle of the display surface 150b with respect to the optical axis direction A of the optical system of the imaging unit 122 (hereinafter simply referred to as an inclination angle) can be changed.

  Then, as shown in FIG. 2B, the display surface 150b of the reflection unit 150 is in the storage state when it is moved to a position (storage position) close to the main body 100a. Similarly, the monitor 130 can be stored. Therefore, by storing the reflecting unit 150 when not in use, damage to the reflecting unit 150 can be avoided, and the imaging device 100 can be made small to improve portability and storage.

  Returning to FIG. 1, the tilt detection unit 152 detects the tilt angle of the display surface 150 b and outputs angle data indicating the detected tilt angle to the central control unit 136.

(Explanation of angle of view and reference frame)
FIG. 3 is an explanatory diagram for explaining the angle of view frame. As illustrated in FIG. 3A, the reflection unit 150 of the imaging device 100 is disposed between the eye point 202 that is the position of the eye of the photographer and the subject 200. The photographer forms a virtual image indicating an angle-of-view frame of the imaging unit 122 on the subject 200 side from the reflection unit 150 and visually recognizes the light emitted from the light emitting unit 138.

3A, when the distance Z1 from the eye point 202 to the reflecting unit 150 (or the optical system of the imaging unit 122) is sufficiently smaller than the distance Z2 from the eye point 202 to the subject 200, The angle of view θ ₁ of the imager's field of view and the angle of view θ ₂ of the imaging unit 122 can be regarded as being approximately equal.

  By the way, the range of the visual field that is visually recognized in a normal state without intentionally having a wide visual field among human visual fields is approximately 80 mm in terms of the focal length in terms of 35 mm film. Therefore, for example, with respect to the display range of the display surface 150b of the reflection unit 150, the imager holds the imaging apparatus 100 with the eye point 202 positioned approximately 80 mm away from the vertical center and both horizontal ends. And At this time, the field of view of the photographer is generally occupied by the subject 200 and the outside scene through the reflection unit 150.

  In this embodiment, when the focal length is set to 80 mm, the virtual image of the angle-of-view frame visually recognized by the photographer is assumed to overlap the edge of the reflection unit 150. A frame corresponding to the position of the angle of view frame at this time is set as a reference frame serving as a reference for adjusting the eye point 202.

Further, as shown in FIG. 3 (b), the imaging apparatus 100, when the zoom operation, the field angle theta ₂ of the imaging unit 122 according to the zoom magnification is reduced. Then, the view angle frame becomes smaller than the reference frame.

FIG. 4 is an explanatory diagram for explaining the relationship among the subject 200, the reflection unit 150, the reference frame 204, and the view angle frame 206. As shown in FIG. 4A, when the focal length is set to 80 mm (θ ₁ ≈θ ₂ ), the reference frame 204 is visually recognized as a virtual image so as to be within the edge of the reflecting portion 150.

Here, when the zoom operation is performed, the drawing processing unit 144 displays frame data for allowing the photographer to visually recognize the angle-of-view frame 206 that has become smaller according to the zoom operation as shown in FIG. 4B. Generate. Therefore, the image pickup person, a virtual image field angle frame 206 indicating the angle of view, visible superimposed on actual object 200 and outside scene of over reflective part 150 to intuitively grasp the angle theta ₂ of the imaging unit 122 It becomes possible.

  In addition, if the eye point 202 is shifted from the correct position to either the top, bottom, left, or right, the position of the view angle frame 206 that is visually recognized as a virtual image also becomes inaccurate. For example, when the eye point 202 is shifted upward, as shown in FIG. 4C, the angle-of-view frame 206 is offset downward from the center of the reflection unit 150, and the lower end of the reference frame 204 is the reflection unit 150. Deviate from. From this, the imager adjusts the positional relationship between the imaging device 100 and the eye point 202 so that the reference frame 204 can be accommodated in the reflection unit 150, thereby correctly positioning the eye point 202, and an accurate angle of view. The frame 206 can be grasped.

  In addition, as described above, since the reflection unit 150 (display surface 150b) has an inclination angle that is variable by the rotation mechanism 150a, the reference frame 204 is displayed on the reflection unit 150 by adjusting the inclination angle of the reflection unit 150. It is also possible to fit within the display range of the surface 150b.

(Frame data generation process)
Next, regarding the frame data generation processing, the calculation processing of the sizes of the reference frame 204 and the view angle frame 206 will be described in detail. FIG. 5 is an explanatory diagram for explaining the relationship between the focal length f and the angle of view. As shown in FIGS. 5A to 5B , the light incident on the optical system is projected most clearly at a position separated by the focal length f on the opposite side of the subject 200 with the principal point 208 of the optical system interposed therebetween. Is done. Let this projection range be the virtual circle S centering on the optical axis 210 of an optical system.

  A range of the virtual circle S that matches the rectangular shape of the light receiving surface of the image sensor 178 is converted into image data. Here, for example, a rectangular area C having an aspect ratio of VGA (Video Graphics Array) is considered, and the horizontal distance is a horizontal distance H, and the vertical distance is a vertical distance V.

…（数式１）

…（数式２） If the angle that is half of the horizontal field angle is angle θ _H (see FIG. 5A) and the angle that is half of the vertical field angle is angle θ _V (see FIG. 5B), The following formulas 1 and 2 are established.

... (Formula 1)

... (Formula 2)

…（数式３）

…（数式４） From Formula 1 and Formula 2, the horizontal field angle (2θ _H ) and the vertical field angle (2θ _V ) are obtained using Formula 3 and Formula 4 below, respectively.

... (Formula 3)

... (Formula 4)

  For example, the rectangular area C is set in accordance with the size of the 35 mm film, the horizontal distance H is 36 mm, and the vertical distance V is 24 mm.

When the focal length f is 80 mm, the horizontal view angle (2θ _H ) is approximately 28 ° and the vertical view angle (2θ _V ) is approximately 22.6 ° according to Equation 1 and Equation 2 above.

When the focal length f is 200 mm, the horizontal angle of view (2θ _H ) is approximately 9.1 ° and the vertical angle of view (2θ _V ) is approximately 6.9 ° according to Equation 1 and Equation 2 above. Become.

  FIG. 6 is an explanatory diagram for explaining the relationship between the angle of view and the length of the angle of view frame 206. FIG. 6A shows the positional relationship when it is assumed that the field angle frame 206 recognized as a virtual image is captured from a horizontal viewpoint. Here, the relationship between the angle of view and the length of the angle-of-view frame 206 will be described with respect to the vertical direction, and the relationship between the angle of view with respect to the horizontal direction and the length of the angle-of-view frame 206 is substantially equal to the vertical direction. The description is omitted.

…（数式５） Regarding the angle of view of the principal point 208 of the optical system on the subject 200 side, the same relationship as in the above formulas 1 and 2 holds. Specifically, as shown in FIG. 6, the vertical length y ₀ of the reference frame 204, the distance x from the eye point 202 to the display surface 150 b of the reflector 150, and the vertical field angle (2θ _V ). Is in the relationship of Equation 5 below.

... (Formula 5)

…（数式６） Substituting 17 ° which is the angle of view (2θ _V ) when the focal length f is 80 mm, the following Expression 6 is obtained.

... (Formula 6)

…（数式７） That is, the vertical length _{y 0} of the angle frame 206 becomes 0.3 times the distance x. Further, when the focal length f by the zoom operation becomes 200 mm, the vertical length of the view angle frame 206 and the length y _1. At this time, if the length y ₀ in the above formula 5 is replaced with the length y ₁ and the angle of view (2θ _V ) when the focal length f is 80 mm is substituted for 6.9 °, the following formula 7 is obtained. .

... (Formula 7)

From Equation 6 and Equation 7, the vertical length y _{0 of the} angle-of-view frame 206 when the focal length f is 80 mm, and the vertical length y _{1 of the} angle-of-view frame 206 when the focal length f is 200 mm. The ratio is y ₀ : y ₁ = 0.3: 0.12.

For example, the length of _{y 0} of the vertical angle frame 206 when the focal length f of 80 mm, when the 480 pixels is a VGA vertical resolution, vertical angle frame 206 when the focal length f of 200mm length _{y 1} is derived as 192 pixels.

  For this reason, as shown in FIG. 6B, when the numbers from 0 to 479 are assigned to the vertical resolution of 480 pixels from the top, the 240th pixel, which is the center of the vertical pixel arrangement, is changed to the angle of view. When arranged so as to be the center of the frame 206, the view angle frame 206 is from the 144th pixel to the 335th pixel from the top.

(Display control method)
Subsequently, a display control method of the display unit 190 of the imaging apparatus 100 will be described. FIG. 7 is a flowchart for explaining the flow of processing of the display control method.

  As shown in FIG. 7, the tilt detection unit 152 detects the tilt angle of the display surface 150 b and outputs it to the central control unit 136 (S <b> 300). The central control unit 136 determines whether or not the reflection unit 150 is in the storage position based on the tilt angle (S302). When in the storage position (YES in S302), the central control unit 136 has already made the MEMS control unit 142 and the light emission control unit 146 visually recognize a virtual image of the reference frame 204 (hereinafter referred to as a reference frame control process). It is determined whether or not it is performed (S304).

  When the reference frame control process is not performed (NO in S304), the process returns to the angle detection step S300. When the reference frame control process is being performed (YES in S304), the reference frame control process is stopped (S306), and the process returns to the angle detection step S300.

  When the reflection unit 150 is not in the storage position (NO in S302), the central control unit 136 determines whether or not the reference frame control process has already been performed (S308). When the reference frame control process is not performed (NO in S308), the reference frame control process is started (S310), and the process proceeds to the angle determination step S312. If the reference frame control process is being performed (YES in S308), the process proceeds directly to the angle determination step S312.

  Subsequently, the central control unit 136 determines whether or not the inclination angle is included in a predetermined setting range (S312). For example, at an inclination angle at which the display surface 150b of the reflection unit 150 is almost invisible, an accurate virtual image of the angle-of-view frame 206 is not visually recognized no matter how the positional relationship between the eye point 202 and the imaging device 100 is adjusted. The setting range is a tilt angle range in which an accurate field angle frame 206 may be grasped by adjusting the positional relationship between the eye point 202 and the imaging apparatus 100.

  When the tilt angle is included in the setting range (YES in S312), the central control unit 136 has already performed processing for enabling the MEMS control unit 142 and the light emission control unit 146 to visually recognize the virtual image of the view angle frame 206 (hereinafter referred to as the view angle). It is determined whether or not (referred to as frame control processing) is being performed (S314).

  When the angle-of-view frame control process has already been performed (YES in S314), the angle-of-view frame control process is continued. If the angle-of-view frame control process has not yet been performed (NO in S314), the angle-of-view frame control process is started (S316). Then, the process returns to the angle detection step S300.

  In the angle determination step S312, if the tilt angle is not included in the setting range (NO in S312), it is determined whether or not the angle-of-view frame control process has already been performed (S318). If the angle-of-view frame control process has already been performed (YES in S318), the angle-of-view frame control process is stopped (S320), and the process returns to the angle detection step S300 as it is. If the view angle frame control process has not been performed yet (NO in S318), the process returns to the angle detection step S300.

  In this way, when the tilt angle is included in the setting range, the light emission control unit 146 causes the image of the imaging unit 122 to be reflected by the light reflected by the display surface 150b of the reflection unit 150 according to the control signal of the central control unit 136. Light emission of the light emitting unit 138 is controlled so that a virtual image indicating the corner frame 206 can be formed on the subject 200 side from the reflecting unit 150. That is, the display unit 190 displays the view angle frame 206.

  Further, the light emission control unit 146 stops the light emission of the light emitting unit 138 according to the control signal of the central control unit 136 when the tilt angle is not included in the setting range. As described above, the light emission control unit 146 controls the light emission of the light emitting unit 138 so that the virtual image indicating the field angle frame 206 of the imaging unit 122 cannot be formed. That is, the display unit 190 does not display the view angle frame 206.

  Therefore, the imaging apparatus 100 avoids that the virtual image due to the light reflected by the display surface 150b of the reflection unit 150 indicates the position of the inaccurate angle of view frame 206, and gives the imager the accurate angle of view frame 206. It becomes possible to grasp.

  Further, the above setting range does not include the inclination angle of the display surface 150b when the reflecting portion 150 is in the storage position. That is, when the display surface 150b is moved to the storage position, the tilt angle is not included in the setting range, and the light emission control unit 146 stops the light emission of the light emission unit 138 according to the control signal of the central control unit 136. . In other words, the display unit 190 does not display the view angle frame 206. Therefore, a virtual image indicating the angle of view frame 206 of the imaging unit 122 cannot be formed.

  As described above, according to the imaging apparatus 100 and the display control method of the present embodiment, when the tilt angle is not included in the setting range, the view angle frame 206 is not visually recognized and the view angle frame 206 is erroneously recognized. By avoiding this, it becomes possible to properly grasp the angle of view frame.

(Modification)
FIG. 8 is a functional block diagram illustrating an outline of the imaging apparatus 400 in the modification, and FIG. 9 is a schematic external view of the imaging apparatus 400 in the modification. Unlike the imaging apparatus 100 of the above-described embodiment, the imaging apparatus 400 includes a selector unit 430 illustrated in FIG. 8 instead of providing the monitor 130 as illustrated in FIGS. 8 and 9.

  Instead of the drawing processing unit 144, the selector unit 430 generates a horizontal synchronization signal synchronized with the self-oscillation period based on the synchronization signal from the MEMS control unit 142, and further performs vertical synchronization based on the horizontal synchronization signal. A signal is generated and output to the MEMS control unit 142.

  Further, the selector unit 430 switches between the display mode of the angle-of-view frame 206 and the display mode of the preview data in accordance with a control signal from the central control unit 136 corresponding to an operation input via the operation unit 120.

  In the display mode of the angle of view frame 206, the selector unit 430 outputs the frame data output from the drawing processing unit 144 to the light emission control unit 146 in synchronization with the horizontal synchronization signal and the vertical synchronization signal.

  In the preview data display mode, the selector unit 430 outputs the preview data output from the image output unit 128 to the light emission control unit 146 in synchronization with the horizontal synchronization signal and the vertical synchronization signal.

  As described above, by providing the selector unit 430, it is possible to visually recognize a preview image, an OSD, or the like as a virtual image by the light reflected on the display surface 150b of the reflection unit 150 without separately providing the monitor 130. .

  Similarly to the imaging apparatus 100 of the above-described embodiment, the imaging apparatus 400 according to the modification also emits light when the light emission control unit 146 includes the tilt angle in the set range according to the control signal of the central control unit 136. By controlling the light emission of the unit 138 and the light reflected by the display surface 150b of the reflection unit 150, a virtual image indicating the field angle frame 206 of the imaging unit 122 can be formed on the subject 200 side from the reflection unit 150, and the inclination angle is When it is not included in the setting range, the light emission of the light emitting unit 138 is stopped, and a virtual image indicating the angle of view frame 206 of the imaging unit 122 cannot be formed. Therefore, the imaging apparatus 400 can appropriately grasp the angle-of-view frame 206 by avoiding erroneous recognition of the angle-of-view frame 206.

  The focal length that defines the reference frame 204 described above varies depending on the operation input because the optimal value differs depending on the imaging target, the distance to the subject 200, and the individual differences in the sense of the photographer. . For example, a calibration function that enables selection of the optimum value of the focal length while referring to the monitor 130 may be provided.

  On the telephoto side, the view angle frame 206 is displayed in a small size and may be difficult to view. For example, a pointer such as a cross, dot, or triangle indicating the center position of the imaging range is displayed as the view angle frame. May be. The imager can grasp that the predetermined range centered on the pointer is the imaging range by visually recognizing the pointer.

  In the embodiment and the modification described above, the display unit 190 includes a laser light source (light emitting unit 138) and a MEMS mirror (MEMS control unit 142, mirror unit 140), and is displayed on the display surface 150b by a so-called MEMS method. The corner frame 206 is displayed. However, the display unit 190 may include a reflective liquid crystal display element and a projector optical system, and may display the view angle frame 206 on the display surface 150b by a so-called LCOS (Liquid Crystal On Silicon) method. The display unit 190 is not limited to the HUD, and may be a display unit having a display surface that can transmit light from the subject.

  Note that each step of the display control method of the present specification does not necessarily have to be processed in time series in the order described in the flowchart, and may include processing in parallel or a subroutine.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Is done.

  The present invention can be used in an imaging apparatus that captures an image of a subject and generates image data.

A ... Optical axis direction 100, 400 ... Imaging device 122 ... Imaging unit 138 ... Light emission unit 146 ... Light emission control unit 148 ... Intermediate screen 150 ... Reflection unit 152 ... Tilt detection unit 190 ... Display unit 200 ... Subject 206 ... Field angle frame

Claims (3)

An imaging unit having an optical system for condensing light from a subject;
A display unit having a display surface that is variable in inclination angle with respect to the optical axis direction of the optical system and transmits light from the subject and displays an angle-of-view frame indicating an imaging range of the imaging unit;
An inclination detector for detecting an inclination angle of the display surface;
With
The display unit displays the angle of view frame when the inclination angle is included in a predetermined setting range as a range in which the angle of view frame can be accurately grasped , and the inclination angle is included in the setting range. If not included, the imaging device does not display the angle-of-view frame even if the display surface is in a visible range . The display unit
A light emitting unit that emits light for displaying the angle-of-view frame;
A light emission control unit for controlling light emission of the light emitting unit;
A reflecting portion that reflects light from the light emitting portion and has the display surface;
The imaging apparatus according to claim 1, comprising: The display unit can move at least the display surface to a storage position at a position not included in the setting range,
3. The image pickup apparatus according to claim 1, wherein when the display surface is moved to the storage position, the angle-of-view frame is not displayed.

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