JP5281610B2 - Camera with laser distance meter - Google Patents

Description

  The present invention relates to a photographing apparatus with a laser distance meter that can measure the state of a subject photographed with a photographing device in a non-contact manner by integrally attaching the laser distance meter to a photographing device having an accessory shoe with a mounting device having a simple structure. Is.

  Generally, digital image data of a subject image taken with a digital camera and a measured distance value obtained by measuring the distance from the digital camera to the subject with a laser distance meter are input to a well-known personal computer (personal computer). The non-contact type image measuring apparatus that can measure the state of the subject photographed by the non-contact method is applied in various fields.

  As an example to which this kind of non-contact type image measuring apparatus is applied, there is a laser beam approach detection system that detects that a heavy machine such as a crane has approached a power transmission line (see, for example, Patent Document 1).

  As another example of applying the non-contact type image measuring device, a remote measuring method for quantitatively determining the state of damage or deterioration of the measured object by remote measurement from a position away from the measured object without requiring a scaffold And a device (see, for example, Patent Document 2).

JP 2006-201030 A JP 2001-280960 A

  In the approach detection system using laser light disclosed in Patent Document 1 described above, although not shown here, an installation panel that rotates horizontally about a central axis supported by a boom (heavy machine) such as a crane Above, a CCD camera that follows the relative movement of the power transmission line and a laser rangefinder that changes the irradiation direction in conjunction with the CCD camera are arranged in parallel to the power transmission line. And it is described that the digital image data of the subject image photographed by the CCD camera and the measured distance value measured by the laser distance meter are input to a personal computer to detect that a heavy machine such as a crane has approached the power transmission line. .

  However, in the approach detection system using laser light disclosed in Patent Document 1, a rotation drive mechanism for rotating the installation board is required, and the approach detection system using laser light becomes expensive, and a laser distance meter and CCD are installed on the installation board. Since the camera is arranged side by side on the installation panel, the apparatus becomes large and portability is difficult.

  Furthermore, since the CCD camera and the laser distance meter are arranged side by side on the installation panel, both are easily affected by vibration. For this reason, there arises a problem that an accurate measurement result cannot be obtained when digital image data of a subject image is analyzed by a personal computer.

  In the remote measurement method and apparatus disclosed in Patent Document 2 described above, a laser distance meter is integrated on a digital camera. However, there are cases where it is desired to use each individually or in combination with an existing laser rangefinder and a digital camera. However, Patent Document 2 is an integrated laser distance meter and digital camera.

  Further, analysis with less image vibration is easier, but neither Patent Documents 1 and 2 give any consideration to vibration determination given from the surroundings.

  Therefore, in order to solve the above-mentioned problems, the laser rangefinder can be easily and integrally attached to a photographing device having an accessory shoe, is excellent in portability, and influences such as vibration around the measurement are displayed on the image. It is an object of the present invention to provide an imaging device with a laser distance meter that can be determined.

The present invention has been made in view of the above problems, and the invention according to claim 1 provides
A digital camera having an accessory shoe that is raised symmetrically on both sides and bent inward to form U-shaped fitting grooves on both sides ;
A laser rangefinder with a tripod mounting screw hole on the bottom ;
A flat substrate attached to the bottom surface of the laser rangefinder having a round hole penetrating between an upper surface and a lower surface at a position facing the tripod mounting screw hole on the bottom surface of the laser rangefinder. And
A thumb screw that is inserted into the round hole from the lower surface side of the substrate and is screwed into the tripod mounting screw hole of the laser distance meter to attach the upper surface of the substrate to the bottom surface of the laser distance meter. When,
A shoe attaching / detaching member fixed to the position of the lower surface of the substrate facing the accessory shoe of the digital camera and fitted to the accessory shoe;
With
The shoe attaching / detaching member is
A flat shoe fitting portion that can be fitted to the accessory shoe by the fitting groove with a thickness equal to or less than the fitting groove of the accessory shoe, and a convex base.
The pedestal is
A flat plate-like main body portion covering the end portions on both sides of the accessory shoe ;
A protrusion that fits between the end portions on both sides of the accessory shoe, the upper surface is fixed to the body portion, and the lower surface is fixed to the upper surface of the shoe fitting portion;
Consists of
Furthermore, the base is
A quadrangular bottomed hole that reaches from the central part of the upper surface of the main body part to the lower surface of the protruding part is provided,
And the center vicinity of the both sides of the accessory shoe of the bottomed hole is opened,
Wherein the bottomed hole, the gist that you substantially U-shaped plate spring shape which presses the projecting the both side to the opening of the both sides of the accessory shoe is circumferentially provided.

According to the laser rangefinder with imaging apparatus according to claim 1 according to the present invention may more readily be mounted integrally with the A Kusesarishu over. Furthermore, it provides portability good laser rangefinder with capturing apparatus since it is possible to remove it from the laser rangefinders.

Also, the digital camera by the optical axis and the optical axis of the laser rangefinders is mounted abutting pads gear body of photographic equipment on one surface of a substrate to be parallel, the positions of the optical axis misalignment or more Since no deviation occurs, the state of the subject can be accurately measured.

Further, the since the paste transparent only scale printing the scale representing the allowable error range in measurement environment state on the LCD in the monitor, the constant environmental conditions measurement that receives the photographic equipment itself by the clear only scale can and Turkey to check before measurement.

(A), (b) is the top view and side view which showed the whole structure of the imaging device with a laser distance meter concerning this invention. It is the perspective view which expanded and showed the attachment instrument shown in FIG. It is the perspective view which expanded and showed the accessory shoe of the digital camera shown in FIG.1 and FIG.2, and the shoe attachment / detachment member of an attachment tool. It is the figure which showed typically the relationship between the optical axis of a digital camera, and the optical axis of a laser distance meter. It is the perspective view which showed typically the state which attaches the imaging device with a laser distance meter concerning this invention to a tripod, and measures the state of a to-be-photographed object. (A) is the figure which showed the focal distance of the digital camera, (b) is the figure which showed the image shift by the vibration of a digital camera. (A)-(c) is the figure which showed the state which affixed the transparent exclusive scale which printed the scale showing the allowable error range of a measurement environment state in the liquid crystal monitor provided in the rear surface of the camera body of a digital camera. . (A)-(e) is the figure which each showed the specific example of the scale width | variety of the transparent exclusive scale shown in FIG. (A) is the figure which showed the case where the scale width of the transparent exclusive scale shown in FIG.7 and FIG.8 is five types, (b) is the scale width of the transparent exclusive scale shown in FIG.7 and FIG.8. It is the figure which showed the case where is 1 type. (A), (b) is the figure which showed the state when using a transparent exclusive scale.

  An embodiment of a photographing apparatus with a laser distance meter according to the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, a photographing apparatus 1 with a laser distance meter according to the present invention includes an image pickup device 13 that forms a subject image obtained by photographing a subject H with a photographing lens 12 and outputs digital image data of the subject image. The photographic equipment (hereinafter referred to as a digital camera) 10, a laser distance meter 20 that measures the distance from the digital camera 10 to the subject H, and a shoe attachment / detachment member 32 that is attached to and detached from the accessory shoe 16 of the digital camera 10 are a substrate 31. A distance meter placing portion 31b1 that protrudes from one surface (lower surface) 31a and places the laser distance meter 20 is formed on the other surface (upper surface) 31b opposite to the one surface (lower surface) 31a of the substrate 31. And an attachment device 30.

  Therefore, since the laser distance meter 20 can be integrally attached to the digital camera 10 having the accessory shoe 16 by the attachment device 30 having a simple structure, the photographing apparatus 1 with a laser distance meter having good portability can be provided. As will be described later, the state of the subject H can be accurately measured in a non-contact manner using the photographing apparatus 1 with a laser distance meter.

  Here, the constituent members 10, 20, and 30 of the photographing apparatus 1 with a laser distance meter will be specifically described in order.

  First, the digital camera (imaging equipment) 10 includes an accessory shoe 16 on the upper part of a camera body (equipment body) 11, and a personal computer PC for data analysis of the digital image data of the photographed subject H (FIG. 5). 1 can be applied not only to the digital camera having the structure shown in FIG. 1, but also to a suitable commercially available model such as a single-lens reflex digital camera or a digital video camera.

  The digital camera 10 has a photographic lens 12 built in a front portion of the camera body 11, and the photographic lens 12 can be adjusted for zoom and focus by a plurality of lens groups and a zoom mechanism and a focus mechanism (not shown). ing.

  In addition, an imaging element (image sensor) 13 using a CCD is incorporated in the rear part of the camera body 11 so that the photographing lens 12 and the optical axis K1 coincide with each other. Then, the subject image photographed by the photographing lens 12 is formed on the image sensor 13, and the digital image data of the subject image photoelectrically converted by the image sensor 13 is displayed on the liquid crystal monitor 14 provided on the rear surface side of the camera body 11. At the same time, it is stored in a memory M that is detachable from the camera body 11.

  In addition, a viewfinder 15 is provided on the upper portion of the camera body 11 toward the photographer, and an accessory shoe 16 is provided on the upper outside of the viewfinder 15 so as to protrude upward.

  At this time, the accessory shoe 16 is normally provided integrally with the camera body 11 in order to attach a strobe device or a lighting fixture. In this embodiment, the accessory shoe 16 protrudes from one surface 31a of the substrate 31 of the mounting bracket 30. The provided shoe attaching / detaching member 32 is attachable to and detachable from the accessory shoe 16.

  Next, the laser distance meter 20 includes a subject H in a distance meter main body 21 along with an optical axis K2 parallel to the optical axis K1 of the digital camera 10 and a pulsed laser beam L modulated at a predetermined frequency. A laser light source unit 22 that emits light toward the light source, a light receiving unit 23 that receives the reflected light reflected by the subject H, and a laser beam L and a light receiving unit from the laser light source unit 22. 23, the time difference with the reflected light received at 23 is measured, and based on this time difference, the measurement distance value D (FIG. 5) from the digital camera 10 to the subject H is calculated, and the calculated measurement distance value D is applied to the liquid crystal display panel 26. A measurement distance value output unit 24 for displaying the measurement distance value D wirelessly to the personal computer PC (FIG. 5) by the Bluetooth function, and a tripod mounting screw hole 25 are provided. There.

  At this time, in the embodiment, for example, a commercially available Leica Dist D8 (registered trademark) is applied as the laser distance meter 20, and according to the Leica Dist D8 (registered trademark), the measurement accuracy is ± 1.0 mm. In addition, the measurement range is 0.05 to 200 m. However, when a reflector is not used for the object to be measured, the measurement range is 100 m at the maximum. And it is comprised so that measurement distance value D (FIG. 5) measured with the laser distance meter 20 can be transmitted to personal computer PC (FIG. 5) wirelessly.

  Next, as shown in FIG. 2 in an enlarged manner, the mounting device 30 described above is a part of the main part of this embodiment, and the substrate 31 is formed in a substantially flat plate shape using a lightweight aluminum material or the like. Is formed. A shoe attaching / detaching member 32 that is detachably fitted to the accessory shoe 16 of the digital camera 10 is integrally fixed to an intermediate portion in the longitudinal direction of the one surface 31 a of the substrate 31. The other surface 31b on the opposite side is formed flat, and this other surface 31b serves as a distance meter mounting portion 31b1 for mounting the laser distance meter 20.

  The above-described shoe attaching / detaching member 32 is a state in which the square pedestal portion 32a and the shoe fitting portion 32b laminated and connected to the pedestal portion 32a are subjected to wear resistance treatment using a lightweight aluminum material or the like. Are integrally formed.

  At this time, the pedestal portion 32a of the shoe attaching / detaching member 32 is fixed to the one surface 31a of the substrate 31 with screws 33 at the four corners, and the shoe fitting portion 32b is smaller in outer shape than the pedestal portion 32a and is attached to and detached from the accessory shoe 16. It is formed in a size that can be freely fitted, and the subject in the accessory shoe 16 as indicated by the arrow, with the rear end portion of the shoe fitting portion 32b opposite to the subject H as the head. Detachable from the H side.

  Further, as shown in an enlarged view in FIG. 3, the shoe attaching / detaching member 32 is formed with a bottomed hole 32a1 having a substantially rectangular shape from the central portion of the pedestal portion 32a toward the shoe fitting portion 32b, and The longitudinal direction of the bottomed hole 32a1 faces the subject H side, and a leaf spring 34 is fitted in the bottomed hole 32a1 so as to protrude in a semicircular arc shape on the left and right sides.

  On the other hand, as shown in an enlarged view in FIG. 3, the accessory shoe 16 is chrome-plated using a sheet metal material, and a pair of left and right U-shaped pieces 16b and 16c from the left and right of the bottom plate 16a upward. Are opposed to each other at an interval and bent into a substantially U shape, so that the shoe fitting portion 32b of the shoe attaching / detaching member 32 can be attached and detached between the pair of left and right U-shaped pieces 16b and 16c. At the same time, a stopper piece 16d is formed to protrude at a slight height at the rear end portion of the bottom plate 16a opposite to the subject H, so that the stopper piece 16d is located with respect to the rear end portion of the shoe attaching / detaching member 32. Thus, the tip position in the insertion direction is restricted.

  Here, when the shoe fitting portion 32b of the shoe attaching / detaching member 32 is fitted between the pair of left and right U-shaped pieces 16b, 16c opposed to each other at a distance in the accessory shoe 16, the base portion of the leaf spring 34 is obtained. A pair of left and right pressing pieces 34b and 34c projecting left and right of 34a in a semicircular arc shape causes the inner side surfaces of the pair of left and right U-shaped pieces 16b and 16c of the accessory shoe 16 to extend in a direction perpendicular to the attaching and detaching direction of the shoe attaching / detaching member 32. By pressing, the shoe attaching / detaching member 32 can be firmly held when the shoe is attached to the accessory shoe 16.

  Returning to FIGS. 1 and 2, the attachment device 30 has a pad 35 that is elastically displaceable on the front surface of the subject H on one surface 31 a of the substrate 31 using an adhesive or the like. It is formed higher than 32 height. The pad 35 abuts on the upper outer side of the viewfinder 15 provided on the upper part of the camera body 11 of the digital camera 10, so that the substrate 31 of the mounting tool 30 is maintained in a state parallel to the optical axis K 1 of the digital camera 10. It is supported stably and prevents the digital camera 10 from being damaged. Further, when a laser emission button (not shown) is on the upper surface of the laser distance meter 20, even if the laser emission button is pressed, the parallel light of the laser beam L can be maintained by the repulsive force of the pad 35.

  As a result, as shown in FIG. 4, the optical axis K1 of the digital camera 10 and the optical axis K2 of the laser distance meter 20 are parallel to each other, and no deviation more than the deviation of the optical axis position occurs. The state can be measured accurately.

  At this time, if the optical axis K2 of the laser rangefinder 20 is displaced in the direction indicated by the dotted line with respect to the optical axis K1 of the digital camera 10, there is no problem in measuring a close object (subject). There is a risk that a large deviation will occur when measuring far away.

  1 and 2 again, the mounting device 30 is formed by penetrating a round hole 31a1 (shown only in FIG. 2) in the vicinity of the rear side opposite to the subject H side on one surface 31a of the substrate 31. In addition, the screw portion 25a (shown only in FIG. 2) of the thumb screw 36 from the one surface 31a side of the substrate 31 passes through the round hole 31a1 and is mounted on the tripod attachment screw hole 25 ( The laser distance meter 20 is fixed on the distance meter mounting portion 31b1 formed on the other surface 31b of the substrate 31 of the attachment device 30 by the thumb screw 36 by being screwed with the thumb screw 36.

  At this time, since the diameter of the grip portion 36 b of the thumb screw 36 is formed larger than the width of the substrate 31, the user can easily grip the portion of the grip portion 36 b that protrudes outward from the substrate 31. Since the grip portion 36b is formed lower than the height of the shoe attaching / detaching member 32, the shoe attaching / detaching member 32 provided on the one surface 30a of the substrate 31 with the thumb screw 36 attached is used as an accessory shoe of the digital camera 10. 16 is detachable.

  Accordingly, if the laser distance meter 20 has the tripod mounting screw hole 25, the laser distance meter 20 can be easily attached to the digital camera 10 having the accessory shoe 16 via the attachment device 30, and the laser can be used when carrying. The distance meter 20 and the attachment device 30 can be detached from the digital camera 10.

  1 and 2, the outer shape of the substrate 31 of the mounting tool 30 is simply illustrated as a rectangular shape. However, the laser distance meter 20 mounted on the distance meter mounting portion 31 b 1 of the substrate 31 is not illustrated. An L-shaped detent (not shown) may be formed at the rear end of the substrate 31 so as not to rotate when fastened by the thumb screw 36, and the position of the rear end of the laser rangefinder 20 may be regulated.

  Then, as shown in FIG. 5, the portable imaging device 1 with a laser distance meter configured as described above is attached to a known tripod T, the digital camera 10 and the laser distance meter 20 are directed toward the subject H, Further, when the portable personal computer PC is installed at the foot of the tripod T, the digital image data of the subject image photographed by the digital camera 10 is stored in the removable memory M, and the memory M is taken out from the digital camera 10. While mounted on the personal computer PC, the measured distance value D from the digital camera 10 to the subject H measured by the laser distance meter 20 is wirelessly input to the personal computer PC. Thereafter, the digital image data and the measured distance value D are stored in the personal computer PC. Based on the above, the state of the subject H is measured.

  In this embodiment, as an example of measuring the state of the subject H using the photographing apparatus 1 with a laser distance meter, the amount of bending of the bridge that occurs when a railway vehicle, an automobile, or the like moves on the bridge serving as the subject H. However, the present invention is not limited to this, and it is possible to quantitatively determine the state of damage or deterioration of the subject H. However, the measurement of the state of the subject H is possible. Detailed description of the method is omitted.

  At this time, in the embodiment, since no reflector is provided on the bridge that becomes the subject H, the laser beam L emitted from the laser distance meter 20 is reflected as it is by the bridge that becomes the subject H, and the reflected light is reflected by the laser distance. It returns to a total of 20.

  By the way, in order to measure the amount of displacement (for example, the amount of deflection) of a measurement object (for example, a bridge) that dynamically changes due to movement of a railway vehicle or automobile, the digital camera itself It is necessary to consider the measurement environment state due to the influence of vibrations, etc., and the influence of the atmosphere between the digital camera 10 and the measurement object (for example, a bridge).

  That is, as shown in FIG. 6A, when the focal length by the imaging lens 12 and the imaging element 13 built in the camera body 11 of the digital camera 10 is f (mm), as shown in FIG. As described above, when vibration is applied to the digital camera 10, the subject image formed on the image sensor 13 is shifted due to the vibration.

  For this purpose, as a mechanism for determining whether or not the image measuring method by the photographing apparatus 1 with a laser distance meter is applicable locally, the measurement environment state is monitored by monitoring a stationary measurement object (for example, a bridge) before the measurement. It is necessary to estimate the measurement error below and to confirm that the estimated measurement error under the measurement environment due to the influence of vibration or the like on the digital camera itself is within the allowable range.

  Therefore, as shown in FIGS. 7A to 7C, in order to confirm that the estimated measurement error due to the influence of vibrations and the influence of the digital camera itself and the influence of the atmosphere is within an allowable range before measurement, A transparent dedicated scale 17 in which a scale representing an allowable error range under a measurement environment is printed on a transparent film in a liquid crystal monitor 14 provided on the rear surface of the camera body 11 of the digital camera 10, thereby attaching the transparent dedicated scale 17. Measures are taken so that it is possible to easily and immediately determine whether the measurement environment to be measured using the scale 17 is within the allowable error range, and to estimate the amount of error quantitatively. Yes.

  Here, the allowable error range allowed by the influence of vibrations and the like on the digital camera itself and the influence of the atmosphere is defined by the parameter K determined for each photographing device (digital camera). A scale representing an allowable error range when applied is displayed on the dedicated scale 17.

  More specifically, the standard deviation (3σ) of the measurement estimation error is expressed by the following formula 1.

[Equation 1]
Standard deviation of measurement estimation error (3σ) = D × 0.018 × K + (D / f) × S × P Equation 1
However,
D: a measured distance value (m) from the digital camera 10 to the subject H measured by the laser distance meter 20;
f: Focal length (mm) of the digital camera 10,
S: Element size (μm / pixel) of the image sensor (image sensor) 13,
P: Pixel coefficient (usually 0.1, 0.2 in the case of a compact camera video recording mode),
K: Camera equipment safety factor (1.0: Large tripod, 1.5: Medium tripod, 2.0: Small tripod, ...)

  In Equation 1 above, the first term D × 0.018 × K represents an error that is an environmental factor due to the measured distance value D, while the second term (D / f) × S. XP represents the spatial resolution caused by the measurement distance value D and the focal length f, and the influence of the first term is remarkably larger than the second term, so the transparent dedicated scale 17 has the effect of the first term. It is used to judge.

  Now, the magnitude δ of the error on the measurement object caused by the fluctuation of the number of pixels d of the image sensor 13 of the digital camera 10 is given by the following equation (2).

[Equation 2]
δ = (D / f) × S × d (Formula 2)
Therefore, the number of pixels d corresponding to an error of D × 0.018 × K can be calculated from the following equations 3 and 4.

[Equation 3]
D × 0.018 × K = (D / f) × S × d Equation 3
[Equation 4]
d = 0.018 × K × f / S Equation 4

  At this time, the photographing equipment safety factor coefficient K and the element size S are fixed values for each digital camera. If the focal length f of the photographing lens 12 is maximized, an approximate value of the focal length f is also determined. The That is, if the setting at the time of photographing is determined, the number of pixels d corresponding to the measurement error becomes a constant value regardless of the measurement distance value (shooting distance) D.

  By the way, the resolution of the image sensor 13 and the resolution of the liquid crystal monitor 14 do not match. Actually, the number of elements of the liquid crystal monitor 14 is much smaller than the number of elements of the image sensor 13. Therefore, it has an enlargement function for displaying details of the subject H. There are roughly two types of methods, a method of changing the display magnification of a monitor adopted in many single-lens reflex cameras, and a method of using a digital zoom adopted in many compact cameras.

  For example, if the number of image pixels of the image sensor 13 is W × H, and the number of dots of the liquid crystal monitor 14 is w × h, the amount of bending of the bridge to be measured is a vertical displacement, so H / h What is necessary is just to be able to display with the above magnification. If the maximum display magnification is m, m × h / H is the number of display dots per pixel. Furthermore, when the vertical width (mm) of one dot of the liquid crystal monitor 14 is s, the fluctuation width δ (mm) on the liquid crystal monitor 14 corresponding to the allowable error range can be calculated by the following formula 5.

[Equation 5]
δ = 0.018 × K × (f / S) × m × (h / H) × s Equation 5

  Since the allowable vibration width is ± 3σ, the scale width of the actual dedicated scale 17 may be created by 2δ according to the following equation 6.

[Equation 6]
Scale width: 2δ = 2 × 0.018 × K × (f / S) × m × (h / H) × s (6)

However,
K: Safety factor of photographing equipment (1.0 to 3.0), f: focal length of digital camera 10 (mm),
S: element size (μm / pixel) of the image sensor (image sensor) 13, m: maximum display magnification,
h: number of vertical dots of the liquid crystal monitor 14, H: number of vertical pixels of the image sensor 13;
s: The dot size (mm / dot) of the liquid crystal monitor 14.

  Here, some specific examples in which the scale width 2δ of the transparent dedicated scale 17 attached to the liquid crystal monitor 14 is calculated using the above-described formula 6 will be described with reference to FIGS. To do.

  First, when EXILIM EX-FC100 (thin compact camera: for simple measurement) is applied as the digital camera 10, K = 3, f = 32.1 mm, S = 1.8 μm, m = 16, h = 240 , H = 2592, and s = 0.17 mm, 2δ = 0.485 mm. Therefore, the scale width of the dedicated scale 17 is 0.5 mm as shown in FIG.

  When a 300 mm telephoto lens is applied to the EOS 50D (single-lens reflex camera: high grade) as the digital camera 10, K = 1, f = 300 mm, S = 4.7 μm, m = 10, h = 480, Since H = 3168 and s = 0.0875 mm, 2δ = 0.601 mm. Accordingly, the scale width of the dedicated scale 17 is set to 0.6 mm as shown in FIG. 8B.

  Further, when EXILIM EX-F1 (high function type compact camera: standard) is applied as the digital camera 10, K = 2, f = 87.6 mm, S = 2.6 μm, m = 15, h = 240. , H = 2112, s = 0.158 mm, 2δ = 0.67 mm. Therefore, the scale width of the dedicated scale 17 is 0.7 mm as shown in FIG.

  Hereinafter, if the model of the digital camera 10 is different, the scale width of the dedicated scale 17 is 0.8 mm as shown in FIG. 8D or 0.9 mm as shown in FIG.

  At this time, a plurality of scales of the transparent dedicated scale 17 shown in FIGS. 8A to 8E are printed with the same width along the vertical direction (vertical direction) of the liquid crystal monitor 14. An object to be measured can be reflected within the scale width of the book.

  When the scale width of the dedicated scale 17 is calculated as described above, five types including 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, and 0.9 mm as shown in FIG. When the transparent dedicated scale 17 printed in common for various camera models is pasted in the liquid crystal monitor 14 with the scale widths of the same scale along the horizontal direction in the transparent dedicated scale 17 The operator uses the scale width corresponding to the model used to determine whether the estimated measurement error under the measurement environment condition is within the allowable error range, or the photographer perceives the measurement environment condition sensibly. Other scale widths can be used based on the results.

  On the other hand, as shown in FIG. 9B, when a transparent dedicated scale 17 printed with one scale width of 0.5 mm, for example, is attached to the liquid crystal monitor 14, it is made to correspond to one type of digital camera 10. Can be used.

  When the transparent dedicated scale 17 pasted in the liquid crystal monitor 14 is used, as shown in FIG. 10A, the optical zoom and the digital zoom (electronic zoom) are combined and displayed at the maximum in the digital camera 10. Set the magnification to m.

  Further, as shown in FIG. 10B, a dedicated scale 17 having a scale width specified by the photographer is placed in the window frame W of the liquid crystal monitor 14, and the measurement object is reflected in the window frame W. When the shooting direction of the digital camera 10 is set to, if the measurement environment state due to the influence of vibrations or the influence of the digital camera itself or the influence of the atmosphere is within the specified scale width (0.6 mm in FIG. 10), Since it can be easily and immediately determined that the image measuring method by the photographing apparatus 1 with a laser distance meter is applicable, the state of the subject photographed by using the photographing apparatus 1 with a laser distance meter can be accurately determined based on this result. Can be measured.

  In the above embodiment, the laser beam L and the digital camera 10 are described as being parallel to each other, but may have a slight angle.

1 ... Imaging device with laser distance meter,
10 ... Photography equipment (digital camera),
DESCRIPTION OF SYMBOLS 11 ... Equipment main body (camera main body), 12 ... Shooting lens, 13 ... Imaging element (image sensor),
14 ... LCD monitor, 15 ... Viewfinder,
16 ... accessory shoe,
16a ... bottom plate, 16b, 16c ... a pair of left and right U-shaped pieces, 16d ... a stopper piece,
17 ... Transparent dedicated scale,
20 ... Laser distance meter,
21 ... Distance meter body, 22 ... Laser light source unit, 23 ... Light receiving unit, 24 ... Measurement distance value output unit,
25 ... Screw holes for attaching tripods, 26 ... Liquid crystal display panels,
30 ... Mounting device,
31 ... Substrate, 31a ... One surface (lower surface), 31a1 ... Round hole,
31b ... the other surface (upper surface), 31b1 ... a distance meter mounting part,
32 ... Shoe attaching / detaching member,
32a ... pedestal portion, 32a1 ... bottomed hole, 32b ... shoe fitting portion,
33 ... Screw, 34 ... Leaf spring, 34a ... Base, 34b, 34c ... A pair of left and right pressing pieces,
35 ... Pad, 36 ... Thumb screw, 36a ... Screw part, 36b ... Grip part,
D: Measurement distance value, H: Subject,
K1 ... optical axis of digital camera, K2 ... optical axis of laser rangefinder,
L ... laser beam, M ... memory, PC ... computer, T ... tripod.

Claims (6)

A digital camera having an accessory shoe that is raised symmetrically on both sides and bent inward to form U-shaped fitting grooves on both sides ;
A laser rangefinder with a tripod mounting screw hole on the bottom ;
A flat substrate attached to the bottom surface of the laser rangefinder having a round hole penetrating between an upper surface and a lower surface at a position facing the tripod mounting screw hole on the bottom surface of the laser rangefinder. And
A thumb screw that is inserted into the round hole from the lower surface side of the substrate and is screwed into the tripod mounting screw hole of the laser distance meter to attach the upper surface of the substrate to the bottom surface of the laser distance meter. When,
A shoe attaching / detaching member fixed to the position of the lower surface of the substrate facing the accessory shoe of the digital camera and fitted to the accessory shoe;
With
The shoe attaching / detaching member is
A flat shoe fitting portion that can be fitted to the accessory shoe by the fitting groove with a thickness equal to or less than the fitting groove of the accessory shoe, and a convex base.
The pedestal is
A flat plate-like main body portion covering the end portions on both sides of the accessory shoe ;
A protrusion that fits between the end portions on both sides of the accessory shoe, the upper surface is fixed to the body portion, and the lower surface is fixed to the upper surface of the shoe fitting portion;
Consists of
Furthermore, the base is
A quadrangular bottomed hole that reaches from the central part of the upper surface of the main body part to the lower surface of the protruding part is provided,
And the center vicinity of the both sides of the accessory shoe of the bottomed hole is opened,
Wherein the bottomed holes, a laser rangefinder with imaging device substantially U-shaped plate spring is characterized that you are circumferentially provided in a shape that presses the both said side projecting into the opening of the sides the accessory shoe . The digital camera
The camera is equipped with a photographic lens unit on the front and a liquid crystal monitor for the camera on the rear surface, and a viewfinder with the accessory shoe on the top. And
2. The photographing apparatus with a laser distance meter according to claim 1 , wherein an elastic pad is provided on an end side of the substrate facing the thumb screw . The elastic pad is
The thumb screw side becomes a surface laser rangefinder with photographing apparatus according to claim 2, wherein that you are cut obliquely. In the monitor of the digital camera,
  A transparent sheet in which dedicated scales are arranged in order at regular intervals between one end and the other end,
  In each of the dedicated scales, a horizontal bar having a fixed length is arranged in the vertical direction with different intervals for each arrangement order, and a numerical value indicating the interval between the horizontal bar and the horizontal bar under each dedicated scale. The apparatus according to claim 1, wherein the photographing device is equipped with a laser distance meter. The interval of the dedicated scale is
  5. The photographing apparatus with a laser distance meter according to claim 4, wherein the scale represents an allowable error range under measurement environment conditions. The dedicated scale is different for each digital camera,
  Safety factor of tripod, focal length of the digital camera, maximum display magnification of the digital camera, number of vertical dots of the monitor, maximum display magnification of the monitor, distance to the subject, number of vertical pixels of the image sensor of the digital camera, The imaging apparatus with a laser distance meter according to claim 4, wherein the interval is determined based on a dot size of the monitor.

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