JP4346008B2 - Method for maintaining object surface size by calculation and photographing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an apparatus using a lens.
[0002]
[Prior art]
Conventionally, as a method of shooting while automatically maintaining the composition of the size and the occupation ratio in the image that the size occupies mainly for the subject moving back and forth, any part of all subjects In focus
      01) Assuming that a person is to be photographed, determine the composition of the subject such as bust shot or full shot
02) Move the angle adjustment ring to the wide end
03) Install the photographing device at a position where the composition determined in 01) can be photographed.
      04) Move the view angle adjustment ring to the telephoto end while moving the imaging device away from or moving away from the subject so that the composition determined in 03) can be maintained.
      05) Record the angle position of the angle adjustment ring in 04) for each distance away from the subject.
06) Recorded in steps 02), 03), 04) for each composition of 01)
      07) In addition to the steps to 02), 03), 04), the distance from the subject at the tele end is adjusted for each distance to the subject even if the subject is adjusted to the wide end while approaching the subject while maintaining the composition. The angle position data of the angle adjustment ring is the same.
      08) The camera has a function to recognize the distance to the subject.
      09) A storage device is provided so that the angle position data of the angle-of-view adjusting ring for each distance from the subject can be stored for each composition.
      10) A selection switch is provided to specify each composition so that the bust shot or full shot composition in 01) can be selected.
        11) The angle of the angle-of-view adjustment ring having the same composition as that of the designated composition from the storage device of 09) based on the distance data from the subject recognized in 08) with the designated switch ON. There is a device that calls the position data and operates the angle-of-view adjustment ring so that the angle position is the same as the called data.
As described above, when the switch for selecting a composition such as bust shot or full shot is turned ON, the angle adjustment ring is automatically adjusted by the action of 11) based on the distance data between the target objects obtained in 10). Thus, an image maintaining the selected composition can be obtained within the distance between the subjects within the range in which the angle of view can be adjusted by the photographing apparatus regardless of the movement of the subject in the front-rear direction.
        12) Cams calculated in the focus adjustment ring and the angle adjustment ring so that a desired composition can be obtained according to the distance from the subject obtained from the focus adjustment ring based on the data obtained in 02), 03), and 04) By associating and tracking a subject that moves back and forth, the angle adjustment ring connected by the cam is automatically adjusted as the focus adjustment ring operates, regardless of whether the subject moves back and forth. The image maintaining the selected composition is obtained within the distance between the subjects within the range in which the angle of view can be adjusted by the photographing apparatus.
        13) Conventionally, the subject is provided with a transmitter so as to automatically track and shoot a subject that moves back and forth, right and left, etc., and the photographing device is provided in the direction detector that automatically tracks the direction of the transmitter. The camera was automatically tracked by setting the camera so that it faces the camera.
[0003]
[Problems to be solved by the invention]
05) of 0002 records the data of the angle position of the angle of view adjustment ring in the memory of the storage device for each distance to the subject, but the distance is set to an infinite memory by setting methods such as meters, centimeters, millimeters, and macros. In the bust shot of a large person, a small person such as a child, the occupancy rate of the subject on the image is different at the same angle and the angle position of the same angle of view adjustment ring, and it cannot be said that it is an appropriate bust shot. The ideal bust shot cannot be obtained unless multiple switches are set so that the occupancy rate of the subject can be selected on the screen. In the same way as for full shot shooting, infinite memory and size are required to obtain appropriate images. Innumerable switches to be specified are necessary, and the cam-based method also requires one cam for one composition, and this cam is necessary for each innumerable composition. It was not suitable for.
[0004]
In the forward and backward movement of 13) of 0002, when the target object is far away, it appears small, and when it is too close, it becomes an enlarged image. Both are difficult to see, so the desired angle of view is adjusted by remote control.
[0005]
[Means for Solving the Problems]
      01) The relationship between the real image and the image projected in the inverted state after passing through the principal point. Since the distance from the real image to the principal point and the distance from the projection image to the principal point are proportional, the real image If the width of the projected image is width, height is height, and if diagonal, the dimensions in the same direction as the diagonal are extracted, and the equation is as follows: Real image size ÷ Real image principal point distance = Projected image dimension ÷ Projected image principal point distance Define
      02) X in FIG. 1 corresponds to the projected image of 01), and the image plane of 35 mm film has an image plane size (X) of 35 mm, and each of Y1, Y2, and Y3 corresponds to a real image. A 35 cm square plate with a plane parallel to the plane, passing through P1, P2, and P3 of each principal point and appearing to the full 35 mm width of the image plane, the real image of the subject Since the surface is the subject surface and the width is 35 cm, the subject surface size (Y) is 350 mm, and the subject surface for 350 mm is reflected on the 35 mm imaging surface. Distance between principal points = projected image size ÷ distance between projected image principal points Subject surface dimension (Y) ÷ distance between subject principal points (W) = imaging surface dimension (X) ÷ distance between imaging principal points (b ) The formula of Y ÷ W = X ÷ b was derived.
      03) On the optical axis (Z) line in FIG. 1, there are center points focused on Y1, Y2, and Y3 of each plate as a subject, and the distance from each center point to the imaging plane is the distance between each subject (T ), T1 is 1155 mm, T2 is 770 mm, T3 is 308 mm, and the distance between each subject (T) is the sum of the distance between each imaging principal point (b) and the distance between each subject principal point (W). Then, T = W + b.
      04) Even if the Y1, Y2, and Y3 plates in FIG. 1 are replaced with 1-meter square plates, the image plane size (X) does not change, and the positions of the principal points P1, P2, and P3 are also the same. If the image does not change, the image displayed on the imaging surface is the same 350 mm size plate surface portion, the size of the object surface does not change, and the object surface size (Y) of the 350 mm size within the 1000 mm square plate surface. There is no change in reflecting.
      05) Subsequent to 04), even if each Y1, Y2, Y3 plate is replaced with a 20 cm square plate, the image plane dimension (X) does not change, and the positions of P1, P2, P3 of each principal point If the image does not change, the image projected on the image plane is a 200 mm square plate that is focused on the optical axis (Z) line and is projected on the remaining 20 mm of the image plane. A 200 mm square plate reflected on the image plane of 15 mm and a 200 mm square plate reflected on the image plane of 20 mm has a subject plane size (Y) of 200 mm, and the remaining end surface 15 The subject surface dimensions (Y) equivalent to 150 millimeters on the imaging surface for millimeter dimensions are 350 millimeters in total, so the subject surface dimensions (Y) of 350 millimeters are projected. There is no change.
      06) 04) It can be understood from 05) that when the distance from the image forming surface having a fixed dimension to the principal point is determined, the size of the object surface dimension (Y) displayed on the image forming surface is the distance between the objects ( Since the subject surface size (Y) and the distance between subjects (T), which are the size of the subject to be photographed, are determined, the position of the principal point (P) is only one point. (P) The distance between imaging principal points (b) for determining the position is set as a conditional expression of Y ÷ W = X ÷ b and T = W + b described in 02) and 03), and b = T ÷ ((1 ÷ ( The formula of X ÷ Y)) + 1) was derived.
      07) For the purpose of projecting 350mm above the person's shoulder as the subject, the T3 specified in the formula of b) = T ÷ ((1 ÷ (X ÷ Y)) + 1) in 03) 308 ÷ ((1 ÷ (35 ÷ 350)) + 1) = 28 is calculated from the distance between subjects (T) of 308 mm, and the main point (P) of the 35 mm film camera with an angle of view adjustment function is moved to the position of 28 mm. If you hold it vertically and take a subject distance (T) of 308 mm so that the subject is in focus on the optical axis (Z), you can take a picture with a composition like an ID photo.
      08) Same as 07), from 1155mm of T1 and 770mm of T2 specified in 03) to 1155 ÷ ((1 ÷ (35 ÷ 350)) + 1) = 105 and 770 ÷ ((1 ÷ (35 ÷ 350) ) +1) = 70 is derived and executed, so that a photograph with the same composition as 08) can be taken as in 02), 03), 04) of 0002.
      09) FIG. 2 shows the relationship between the subject distance (T) and the imaging principal point distance (b) for obtaining subject surface dimensions (Y) of G, H, I, J, K, and L. b = T ÷ It is the figure obtained by the formula of ((1 ÷ (X ÷ Y)) + 1) and tabulated.
Based on the above, the surface parallel to the imaging surface and based on the focal point closest to the optical axis (Z) is taken as the subject surface, and the length in the same direction of the imaging surface and the subject surface is extracted and extracted. By specifying the subject surface dimension (Y), the principal point (P) position for maintaining the dimension is derived by calculation, and the principal point (P) is automatically moved by moving based on the derived numerical value. It is possible to shoot subjects with the same composition.
[0006]
    The video camera (1) has an electrically operated zoom function and a remote control jack for operating it, and can be operated from a 35 mm wide end to a 105 mm tele end to switch between auto focus and manual functions.
[0007]
    The focus adjustment ring (2) of the video camera (1) rotates to move the focus lens, and the subject distance (T) that is in focus is determined for each position of the focus lens, so the subject distance (T) You can focus on subjects from the closest distance of 50cm to infinity.
[0008]
    The magnification adjustment ring (3) of the video camera (1) rotates to move the principal point together with the zoom lens from the 35mm wide end of the imaging main point distance (b) to the 105mm tele end. Since the magnification is determined for each distance (b) between the imaging principal points, the image magnification on the imaging surface is changed.
[0009]
The selection button (4) in FIG. 5 is filled with numerical values of the object surface dimensions (Y) of 35, 50, 100, 200, 400, and 800 in the symbol of OFF and the unit of cm, and the switch ( 5A) is set to be in the ON state, and the desired object surface dimension (Y) value is set in the order of 35 cm to 8 m in the standby state of this function by rotating the index (5) as a target. You can choose.
[0010]
    The sensor (2A) is installed on the focus adjustment ring (2), and the sensor (2A) detects each rotation operation amount when adjusting from infinity to the infinity from the closest distance of the focus adjustment ring (2). As a signal to the CPU (10).
[0011]
    A sensor (3A) is installed on the magnification adjustment ring (3), and the sensor (3A) detects each rotational operation amount when adjusting the telephoto end of 105mm from the 35mm wide end of the magnification adjustment ring (3). The information is transmitted as a signal to the CPU (10).
[0012]
    The selection button (4) is provided with a sensor (4A) and a switch (5A). When the selection button (4) is OFF at the position of the index (5), the switch (5A) is connected to the CPU (10). The sensor (4A) detects the amount of rotation when transmitting ON information and selects between 35 and 800, and transmits the information to the CPU (10) as a signal.
[0013]
      The CPU (10) stores the image plane size (X) of 35 mm determined by 0005 as a numerical value.
[0014]
    The CPU (10) converts the signal of the sensor (2A) into a numerical value between subject distances (T) from 50 cm to infinity according to the rotation amount of the focus adjustment ring (2) of 0007, and stores it. The CPU (10) can recognize the inter-subject distance (T) value every time (2) is operated.
[0015]
    The CPU (10) converts the signal of the sensor (3A) into a numerical value (b) between image forming principal points in the order of 35 mm to 105 mm in accordance with the rotation amount of the magnification adjustment ring (3) of 0008, and stores it. Each time the adjustment ring (3) is operated, the CPU (10) can recognize the numerical value (b) between the imaging principal points.
[0016]
    The CPU (10) converts the signal of the sensor (4A) into the subject surface dimension (Y) numerical value in the order from 35 cm to 8 m in the standby state when OFF corresponding to the rotation amount of the selection button (4) of 0009 is stored, and stores it. Each time the selection button (4) is operated, the CPU (10) can recognize the standby state and the subject surface dimension (Y) value.
[0017]
    The CPU (10) enters the standby state with the signal from the switch (5A). When the signal from the switch (5A) disappears, the reception from the sensor (4A) is prioritized and the reception of the sensor (2A) and the sensor (3A) is awaited. ing.
[0018]
        The CPU (10) receives a signal corresponding to the numerical value of the subject surface dimension (Y) of 0016, and B = T ÷ ((1) based on the imaging surface dimension (X) of 35 mm and the distance between subjects (T) of 0014. ÷ (X ÷ Y)) + 1) is calculated, and B is recognized by replacing it with the principal point selection distance (B).
[0019]
      The CPU (10) sends a signal to the enlargement switch (11) if the numerical value of the distance (b) between the imaging principal points of 0015 is not changed and the selection distance (B) of 0017 is small, and the distance between imaging principal points ( When the principal point selection distance (B) value is equal to or greater than the value of b), transmission to the enlargement switch (11) is stopped.
[0020]
    The CPU (10) sends a signal to the reduction switch (12) if the value of the principal point selection distance (B) of 0017 is large without changing the numerical value of the distance (b) of the imaging principal point of 0015, and the distance between imaging principal points ( When the principal point selection distance (B) value is equal to or less than the value of b), transmission to the enlargement switch (11) is stopped.
[0021]
    The enlargement switch (11) is an indirect switch that is connected upon reception from the CPU (10) and is connected to the remote control jack (9) via the output jack (7) and the cable (8). Instead of the end button.
[0022]
    The reduction switch (12) is an indirect switch that is connected upon reception from the CPU (10), and is connected to the remote control jack (9) via the output jack (7) and the cable (8). Instead of the end button.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
    Between the subject planes of Y1, Y2, and Y3 having the same dimensions of 350 mm as opposed to the image plane size (X) of 35 mm in FIG. 1, each subject of 1155 mm of T1, 770 mm of T2, and 308 mm of T3 The distance (Tn) shares the same optical axis (Z) therein.
[0024]
    With the principal points (Pn) of P1, P2, and P3 within the distances (Tn) between the individual objects 0023, the distances (bn) between the imaging principal points of 105 mm for b1, 70 mm for b2, and 28 mm for b3 The distance between the subject main points (Wn) of 1050 mm for W1, 700 mm for W2, and 280 mm for W3 is included.
[0025]
      When the subject surface dimensions (Yn) of the moved 350 mm dimension surface of FIG. 1 are projected on the imaging plane by the movement of the principal points (Pn), the same 350 mm dimension image plane is maintained and imaged.
[0026]
      With the numbers 0023 and 0024
Y1: W1 = X: b1 is 350 mm: 1050 mm = 35 mm: 105 mm
    Y2: W2 = X: b2 is 350 mm: 700 mm = 35 mm: 70 mm
    Y3: W3 = X: b3 is 350 mm: 280 mm = 35 mm: 28 mm
    With the above, the proportional expression of Yn: Wn = X: bn
    T1 = W1 + b1, T2 = W2 + b2, T3 = W3 + b3
    Tn = Wn + bn
    Principal point selection distance (B) = T ÷ ((1 ÷ (X ÷ Y)) + 1)
    T = ((1 ÷ (X ÷ Y)) + 1) × b
    Xn = Y / ((T / b) -1)
    The above equation holds.
[0027]
    In FIG. 2, the vertical axis b represents the distance (b) between the imaging principal points in the range from 35 mm to 105 mm, and the horizontal axis T represents the distance between the subjects (T) from 50 cm to 1000 cm. Line (G), 50 cm subject plane line (H), 1 m subject plane line (I), 2 m subject plane line (J), 4 m subject plane line (K), 8 m subject plane line (L) The graph which shows each object surface dimension (Y) with a line.
[0028]
      In step 0014, the focus adjustment ring (2) is activated, the sensor (2A) detects and transmits the steps in steps, and the CPU (10) converts the recognition distance into a subject distance (T) value for each received number of steps.
[0029]
      In 0015, the magnification adjustment ring (3) is activated, the sensor (2A) detects and transmits the steps in increments, and the CPU (10) converts the image forming principal point distance (b) into a numerical value for each received step and recognizes it. To do.
[0030]
      In step 0016, the selection button (4) is activated, the sensor (4A) detects and transmits the step in steps, and the CPU (10) converts the value into the numerical value of the subject surface dimension (Y) for each received step and recognizes it.
[0031]
As an initial setting, OFF of the selection button (4) is set to the position of the index (5), the changeover switch (6) is set to the manual state, the focus adjustment ring (2) is set to the closest distance 50 cm, and the magnification adjustment ring (3 ) Is set to 35mm at the wide end.
[0032]
    When the selection button (4) is turned off at 0031, the switch (5A) is turned on and transmitted to the CPU (10), and the CPU (10) is reset by the reception of the switch (5A), and the sensor (2A), sensor ( 3A), each information of the sensor (4A) is reset, and the signal release from the switch (5A) is awaited.
[0033]
    When the selection button (4) is rotated from the OFF position and the desired subject surface dimension (Y) is designated, the CPU (10) functions when the switch (5A) signal is interrupted, and then the sensor (4A) And the numerical value of the subject surface dimension (Y) is determined.
[0034]
    Since the sensor (2A) starts from the smallest step zero at the initial setting of 0031, the closest distance is recognized as 500 mm.
[0035]
    Since the sensor (3A) starts from the minimum step zero at the initial setting of 0031, the distance (b) between the imaging principal points is recognized as 35 mm at the wide end.
[0036]
    Since the sensor (4A) starts from the minimum step zero at the initial setting of 0031, it is recognized that the subject surface dimension (Y) is the minimum 350 mm.
[0037]
    The CPU (10) is based on the values of the distance between subjects (T) of 500 mm of 0034, the subject surface dimension (Y) of 35 mm of 0036, and the imaging surface dimension (X) of 35 mm of the video camera (1) at 0005. Point selection distance (B) = T ÷ ((1 ÷ (X ÷ Y)) + 1).
[0038]
    The CPU (10), like 0019, sets the distance (b) between the imaging principal points of 0035 to 35 mm as a reference, while the principal point selection distance (B) as a result of 0037 is small and the numerical value does not change. If the principal point selection distance (B) is greater than or equal to the imaging principal point distance (b), the transmission is stopped.
Distance between imaging principal points (b)> Selected principal point distance (B) → Transmission Enlargement switch (11)
Imaging principal point distance (b) ≤ principal point selection distance (B) → stop Enlargement switch (11)
[0039]
    The CPU (10) reduces the switch (12) while the numerical value of the principal point selection distance (B) as a result of 0037 is large and the numerical value does not change with reference to the distance (b) 35mm between the imaging principal points of 0035 as in 0019 If the principal point selection distance (B) is less than or equal to the imaging principal point distance (b), the transmission is stopped.
Distance between imaging main points (b) <main point selection distance (B) → transmission reduction switch (12)
Distance between imaging main points (b) ≥ Main point selection distance (B) → Stop Reduction switch (12)
[0040]
    If the object surface dimension (Y) of 0033 is 35 cm,
Since the distance (b) between the imaging principal points is 35 mm by default from 0039,
T500 ÷ ((1 ÷ (X35 ÷ Y350)) + 1) = Principal point selection distance (B) About 45.45
Imaging principal point distance 35 <principal point selection distance 45.45-> transmission reduction switch (12)
[0041]
    The reduction switch (12) is turned on, and the zoom remote control is turned on toward the tele end of the video camera (1) by 0022, and the magnification adjustment ring (3) is operated.
[0042]
    As a result, the distance between the imaging principal points at the telephoto end (b) moves in the direction of 105 mm, so that the numerical value of the distance between the imaging principal points of 0040 increases to 45.45 as the principal point selection distance (B). Distance between main points 45.45 ≧ main point selection distance 45.45 → stop The operation of the magnification adjustment ring (3) is stopped by the reduction switch (12), and the object surface dimension (Y ) Becomes 35 cm.
[0043]
If the specification of the subject surface dimension (Y) in 0033 is 8 m,
Since the distance (b) between the imaging principal points is 35 mm by default from 0039,
T500 ÷ ((1 ÷ (X35 ÷ Y8000)) + 1) ≈Main point selection distance (B) 2.18
Distance between imaging main points 35> Main point selection distance 2.18 → Transmission Enlargement switch (11)
[0044]
    The enlargement switch (11) is turned on, and the remote controller for zooming is turned on toward the wide end of the video camera (1) by 0021 to try to operate the magnification adjustment ring (3).
[0045]
    By 0044, the distance between the imaging principal points at the wide end (b) tries to move in the direction of 35 mm. However, since there is no distance between the imaging principal points less than this, the numerical value of the distance 355 between the imaging principal points is unchanged. The enlargement switch (11) is not brought close to the main point selection distance (B) of 2.18 and is outside the range of the subject surface dimension multiple designation switch.
[0046]
    Next, the selector switch (6) is shifted to the autofocus function.
[0047]
      Autofocus is applied to the object facing the video camera (1), and the focus adjustment ring (2) is rotated to focus and stops in focus.
[0048]
    The CPU (10) calculates the principal point selection distance (B) = T ÷ ((1) by changing the distance between the subjects (T) by the operation of the focus adjustment ring (2) and changing the subject surface dimension (Y) by 0033. ÷ (X ÷ Y)) + 1) is calculated.
[0049]
    Repeat steps 0038 and 0039. If there is a reception from the sensor (4A), priority is given to the determination of the subject surface dimension (Y) value of 0033, and the reception of the sensor (2A) and the sensor (3A) is repeated.
[0050]
    By repeating the above, when the focus is adjusted at 0047 and the operation of the magnification adjustment ring (3) is stopped, an image of the subject surface dimension (Y) specified at 0033 is obtained.
[0051]
      By exchanging the roles of the focus adjustment ring (2) and the magnification adjustment ring (3), the desired object surface dimension (Y) can be obtained by the equation T = ((1 ÷ (X ÷ Y)) + 1) × b. Video is obtained.
[0052]
    In the case of digital zoom instead of the optical zoom lens type, the desired object plane is obtained by changing the imaging plane dimension (X) according to the formula 0026 imaging plane selection dimension (Xn) = Y ÷ ((T ÷ b) −1). An image having a dimension (Y) is obtained.
[0053]
A shooting device such as an automatic tracking shooting method (Japanese Patent Laid-Open No. 1-134351), in which a transmission device is installed on a subject and is driven vertically, horizontally, and parallel to face the transmission device to match the function of detecting and tracking the transmission device, Set the surface dimension multiple designation switch.
[0054]
A subject surface size specification switch is set on the device that shoots while tracking the subject from the screen information.
[0055]
【The invention's effect】
      An imaging device with an autofocus function that can obtain the desired image by adjusting the focus or magnification even if the subject is initially set, such as one, many, face, bust up, etc. Can be used to obtain the desired image simply by pointing the shooting device at the subject, moving subjects can be tracked easily, and there are many common parts so that the magnification adjustment ring function can be converted into a subject size multiple selection switch as it is. Easy operation.
[0056]
    Simple operations such as tracking sports such as motor sports such as circuit competitions, competition players, and ball for competitions, etc. are effective, and it works effectively on moving subjects.
[0057]
      Cameras that use a fixed-focus lens, such as the Internet and video phones, are easy to operate, and you can shoot beautiful and clear images by focusing.
[0058]
    A tracking device is installed on the subject, and a direction detection function is added to the photographing device. If the device is driven up and down, left and right, or moved in parallel to face the transmitting device, automatic tracking shooting is performed while maintaining the subject surface dimensions. By eliminating the need for a cameraman and allowing the subject surface dimensions to be controlled with a remote control, etc., you can freely zoom in and out while doing other things, and anyone can get free images However, depending on the response accuracy and speed of each device, it is possible to automatically shoot a subject that the cameraman cannot normally follow by incorporating the transmitter into a ball of a ball game, etc. It works effectively.
[0059]
    The effect of 0058 is also effective for 0055, 0056, and 0057, and most of the reasons for purchasing a home video camera are to capture the child's growth process and are often used for school events, leisure, etc., but the video itself is heavy , It was difficult to shoot while chasing the target child, and even if there was enough recording time, it was not possible to shoot for a long time, and often missed a good moment, but if you shoot with 0058 type, it is easy to do Even if a child gets lost, it can be easily searched.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing that a subject surface of a 350 mm size that appears on an imaging plane does not change even if it moves.
FIG. 2 is an explanatory diagram of a table in which the number of distances between subjects on the horizontal axis T and the number of principal point distances on the vertical axis b are indicated by lines on a subject surface having various dimensions based on FIG. 1;
[Fig. 3]1 is an overall block diagram of the present invention.
[Fig. 4]A video camera (1).
FIG. 5 is an explanatory diagram showing an indicator (5) in FIG. 4, OFF of a selection button (4) to be specified, and dimensions.
[Explanation of symbols]
          1Video camera
    2Focus adjustment ring
    2AFocus adjustment ring (2) sensor
    3Magnification adjustment ring
    3ASensor for magnification adjustment ring (3)
    4On / off switching selection button
    4ASelect button (4) sensor
5Indicator of selection button (4)
5ASelection button (4) ON / OFF switch
    6Manual and auto focus switch
    7Output jack to output 11, 12 information to the outside
    8cable
    9Remote control jack
          10CPU
    11Magnifying switch
    12Reduction switch
        BT ÷ ((1 ÷ (X ÷ Y)) + 1) operation result
bThe distance from the principal point (P) to the imaging plane
bnDistance between each imaging principal point at each distance from each principal point (Pn) to the imaging surface
PPrincipal point
          PnP1, P2, and P3 principal points
TDistance between subjects by distance from subject surface to image plane
          TnDistance between each subject at each distance from each subject surface to the imaging plane
WThe distance between the subject principal points by the distance from the subject surface to the principal point (P)
          WnThe distance between each subject principal point at each distance from each subject surface to each principal point (Pn)
XImaging surface dimensions
        XnImage dimensions with different projected dimensions from the image plane
          YSubject surface dimensions
          YnY1, Y2 and Y3 subject surface dimensions
Zoptical axis
          GA line representing the 35 cm subject surface dimension (Y) maintenance
          HA line representing the 50 cm subject surface dimension (Y) maintenance
          IA line representing the 1m subject surface dimension (Y) maintenance
          JLine representing 2m subject surface dimension (Y) maintenance
          KLine representing 4m subject surface dimension (Y) maintenance
          LA line representing 8m subject surface dimension (Y) maintenance

Claims (2)

Based on the numerical value of the imaging surface dimension (X) in the same direction and the numerical value of the subject surface dimension (Y) selected by an arbitrary variable switch, the imaging device A method of maintaining a subject surface size by an operation of moving a principal point to a distance (b) between imaging principal points obtained by a formula b = T ÷ ((1 ÷ (X ÷ Y)) + 1). Inter-subject distance recognition device that recognizes the inter-subject distance (T) as a numerical value, a subject surface dimension (Y) variable device that includes a variable switch that can variably select the numerical value of the subject surface dimension (Y), and the inter-subject distance recognition Recognizing device for recognizing the distance between subjects (T) obtained from the apparatus, the subject surface dimension (Y) obtained from the subject surface dimension (Y) variable device, and the imaging surface dimension (X) value, and the recognition device Based on the above information, an arithmetic unit for obtaining the distance (b) between the imaging principal points by the equation b = T ÷ ((1 ÷ (X ÷ Y)) + 1) and the distance between the imaging principal points from the arithmetic unit ( An imaging apparatus provided with a principal point moving device capable of moving the principal point position in b).

Images