JP2015212681A - Optical coordinate measurement device and probe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a probe which can be easily handled while reducing the burden of a user and a shape measurement device including the probe.SOLUTION: The contact part of a probe 140 is brought into contact with a measuring object placed on a placing table 120. The plurality of light-emitting parts of the probe 140 are imaged by a main imaging part 130 and image data corresponding to the images of the plurality of light-emitting parts are generated. The coordinate of the contact position of the measuring object with the contact part is calculated on the basis of the generated image data. The holding part of the probe 140 is provided so as to extend in a first direction and a housing part is provided at the upper end of the holding part, so as to extend in a second direction forming an angle with the first direction. The plurality of light-emitting parts are provided on the upper surface of the housing part and the contact part is provided at the end of the housing part.

Description

  The present invention relates to an optical coordinate measuring apparatus using a contact type probe.

  The contact-type coordinate measuring device is provided with a probe having a contact portion. The contact part of the probe is brought into contact with the measurement object, and the coordinates of the contact position between the measurement object and the contact part are calculated. By calculating the coordinates of a plurality of positions on the measurement object, the dimensions of a desired portion of the measurement object are measured.

  Patent Document 1 describes a point-by-point measurement system for spatial coordinates including a data processor, a contact probe, and an angle sensor. The contact probe is provided with a plurality of point light sources in addition to the contact point. The angle sensor is provided so that an essential part of the measurement object can be observed and a plurality of point light sources of the contact probe can be observed.

  The spatial direction from the angle sensor towards each light source is recorded. Based on the recorded spatial direction, the position and direction of the contact probe with respect to the angle sensor is calculated by the data processor. The position of the contact probe is related to the position of the contact point and the position of the measurement object.

Japanese Patent Publication No. 6-511555

  In the point-by-point measurement system of Patent Document 1, the position and direction of the contact probe are calculated by recording light from a plurality of point light sources with an angle sensor. Therefore, when the light from any point light source is blocked by the user's finger or the like, the position and direction of the contact probe are not calculated. Therefore, the user needs to hold the contact probe so as not to block light from all light sources of the contact probe. However, if the contact probe is held in an unnatural posture so as not to block light from all light sources, the burden on the user increases.

  The objective of this invention is providing the shape measuring apparatus provided with the probe and probe which can be handled easily, reducing a user's burden.

  (1) An optical coordinate measuring apparatus according to a first invention includes a mounting table on which a measurement object is mounted, a probe having a plurality of markers and a contact portion that is in contact with the measurement object, An imaging unit that generates image data corresponding to the images of the plurality of markers by imaging a plurality of markers, and the coordinates of the contact position between the measurement target and the contact unit based on the image data generated by the imaging unit A probe that is provided so as to extend in the first direction, and extends in a second direction that forms an angle with respect to the first direction. A plurality of markers provided on the upper surface of the main body, and a contact portion provided on the end of the main body.

  In this optical coordinate measuring apparatus, the contact portion of the probe is brought into contact with the measurement object placed on the mounting table. A plurality of markers of the probe are imaged by the imaging unit, and image data corresponding to the images of the plurality of markers is generated. Based on the image data generated by the imaging unit, the coordinates of the contact position between the measurement object and the contact unit are calculated. Here, the grip portion of the probe is provided so as to extend in the first direction, and the main body portion is provided on the upper end portion of the grip portion so as to extend in a second direction that forms an angle with respect to the first direction. The plurality of markers are provided on the upper surface of the main body, and the contact portion is provided on the end of the main body.

  In this configuration, the user can bring the contact portion at the end of the main body into contact with the measurement object while holding the grip portion. In this case, since the plurality of markers are provided on the upper surface of the main body, the plurality of markers and the imaging unit are not blocked by the user's finger or the like. Therefore, the user does not need to hold the probe in an unnatural posture so as not to block the plurality of markers. In addition, since the grip portion is formed below the main body portion, the center of gravity of the probe is further provided below. Thereby, the user can hold | maintain a probe stably. As a result, the user can easily handle the probe without burden.

  (2) The main body may have first and second side surfaces that can be sandwiched between two fingers of the operator.

  In this case, the main body can be held by sandwiching the first and second side surfaces of the main body with two fingers while supporting the weight of the probe with the palm and the other three fingers. Thereby, the direction of the main body can be easily and finely operated with two fingers. As a result, the user can easily perform a minute operation of the probe.

  (3) The first and second side surfaces may have a non-slip function. According to this configuration, even when the user holds the main body by sandwiching the first and second side surfaces of the main body with two fingers, the main body is prevented from sliding from the finger. Thereby, the user can operate the direction of the main body more easily and finely.

  (4) The main body portion may be provided at the upper end portion of the grip portion so that a portion from the end portion to the grip portion of the main body portion forms an acute angle with respect to the grip portion.

  In this case, it becomes easier for the user to bring the contact portion at the end of the main body portion into contact with the measurement object while holding the grip portion in the substantially vertical direction. Thereby, the user can handle the probe more easily.

  (5) Each of the plurality of markers may include a light emitting element. In this case, the imaging unit can easily image a plurality of markers.

  (6) A power supply device that supplies electric power to the plurality of markers may be disposed in the grip portion of the probe.

  In this case, the position of the center of gravity of the probe becomes lower. Thereby, the user can stably operate the main body.

  (7) The optical coordinate measuring device further includes a light emission control unit that controls the light emission operation of the plurality of markers, and a connection terminal to which a cable is attached is formed at a lower portion of the probe gripping unit. You may connect to the light emission control part through the cable attached to the connection terminal.

  In this case, the connection terminal of the lower part of the holding part of the probe of the cable extends downward. This prevents the cable from blocking between the plurality of markers and the imaging unit. Further, since the weight of the cable is added to the lower part of the grip portion, the main body can be easily and finely operated.

  (8) The probe may further include a first notification unit for notifying the user whether or not a plurality of markers are present in the imaging region of the imaging unit.

  In this case, the user can easily recognize whether or not a plurality of markers exist in the imaging region of the imaging unit.

  (9) A plurality of probes are provided, and the optical coordinate measuring apparatus further includes a setting unit configured to set a probe to be used among the plurality of probes corresponding to the measurement part of the measurement object. Each may further include a second notification unit for notifying the user whether or not the probe should be used based on the setting contents of the setting unit.

  In this case, the user can easily recognize the probe to be used corresponding to the measurement portion of the measurement object from the plurality of probes.

  (10) The plurality of markers and the contact portion are provided in the probe main body so as to be integrally movable in the second direction or in a direction intersecting the first and second directions. A movement instructing unit for instructing movement of the plurality of markers and the contact unit may be provided.

  In this case, the user can move the contact point to a suitable position according to the shape of the measurement object. Thereby, the measurement object can be measured more easily. In addition, since the plurality of markers and the contact portion move integrally, the positional relationship between the plurality of markers and the contact portion does not change even when the contact portion is moved. Therefore, the calculation unit can calculate the coordinates of the contact position between the measurement object and the contact unit in a short time without updating the positional relationship between the plurality of markers and the contact unit.

  (11) A probe according to a second invention is a probe that has a contact portion that can contact a measurement object and can be imaged by an imaging portion of an optical coordinate measuring device, and is provided so as to extend in a first direction. And a main body provided at the upper end of the grip portion so as to extend in a second direction that forms an angle with respect to the first direction, and is imaged by the imaging portion. A plurality of markers are provided on the upper surface of the main body, and a contact portion is provided on the end of the main body.

  In this probe, the grip portion is provided so as to extend in the first direction, and the main body portion is provided at the upper end portion of the grip portion so as to extend in a second direction that forms an angle with respect to the first direction. The plurality of markers are provided on the upper surface of the main body, and the contact portion is provided on the end of the main body.

  In this configuration, the user can bring the contact portion at the end of the main body into contact with the measurement object while holding the grip portion. In this case, since the plurality of markers are provided on the upper surface of the main body, the plurality of markers and the imaging unit are not blocked by the user's finger or the like. Therefore, the user does not need to hold the probe in an unnatural posture so as not to block the plurality of markers. In addition, since the grip portion is formed below the main body portion, the center of gravity of the probe is further provided below. Thereby, the user can hold | maintain a probe stably. As a result, the user can easily handle the probe without burden.

  According to the present invention, the user can easily handle the probe without burden.

It is a block diagram which shows the structure of the optical coordinate measuring device which concerns on one embodiment of this invention. It is a perspective view which shows the structure of the measuring head of the optical coordinate measuring device of FIG. It is a perspective view which shows the structure of the probe of the measuring head of FIG. It is a block diagram which shows the internal structure of a probe. It is a longitudinal cross-sectional view of the front part of a probe. It is a perspective view of the front part of a probe. It is a figure which shows the probe mounting member for mounting the probe of FIG. It is a figure which shows the probe mounting member for mounting the probe of FIG. It is a figure for demonstrating the structure of a main imaging part. It is a schematic diagram for demonstrating the relationship between a main imaging part and a some light emission part. It is a figure which shows an example of the image displayed on the display part of FIG. It is a figure which shows an example of a measuring object. It is a figure for demonstrating the specific measurement example in the measuring object of FIG. It is a figure for demonstrating the specific measurement example in the measuring object of FIG. It is a figure for demonstrating the specific measurement example in the measuring object of FIG. It is a figure for demonstrating the specific measurement example in the measuring object of FIG. It is a figure for demonstrating the specific measurement example in the measuring object of FIG. It is a figure which shows the example by which measurement information was superimposed and displayed on the captured image. It is a schematic diagram which shows the structure of the probe in a 1st modification. It is a schematic diagram which shows the probe of the state to which the stylus was moved. It is a typical side view which shows the structure of the probe in a 2nd modification.

(1) Configuration of Optical Coordinate Measuring Device FIG. 1 is a block diagram showing a configuration of an optical coordinate measuring device according to an embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of the measuring head of the optical coordinate measuring apparatus 300 of FIG. FIG. 3 is a perspective view showing the configuration of the probe of the measurement head 100 of FIG. Hereinafter, the optical coordinate measuring apparatus 300 according to the present embodiment will be described with reference to FIGS. As shown in FIG. 1, the optical coordinate measuring device 300 includes a measuring head 100 and a processing device 200. The measurement head 100 includes a holding unit 110, a mounting table 120, a main imaging unit 130, a probe 140, a sub imaging unit 150, a display unit 160, an operation unit 170, and a control board 180.

  As shown in FIG. 2, the holding unit 110 of the measurement head 100 includes an installation unit 111 and a stand unit 112. The installation unit 111 has a horizontal flat plate shape and is installed on the installation surface. The stand part 112 is provided so as to extend upward from one end of the installation part 111.

  A mounting table 120 is provided at the other end of the installation unit 111. The mounting table 120 is, for example, an optical surface plate. On the mounting table 120, the measuring object S is mounted. In this example, the mounting table 120 has a substantially square shape. A plurality of screw holes are formed in the mounting table 120 so as to be arranged at equal intervals in two directions orthogonal to each other. Thereby, the measuring object S can be fixed to the mounting table 120 by the clamp member and the fixing screw. The mounting table 120 may have magnetism. In this case, the measuring object S can be fixed to the mounting table 120 by a fixing member using a magnet such as a magnet base. Moreover, the upper surface of the mounting table 120 may have adhesiveness. Also in this case, the measuring object S can be easily fixed to the mounting table 120. The mounting table 120 may be configured to be detachable. For example, the mounting table 120 whose upper surface is adhesive may be realized by fixing a plate-like member whose upper surface is adhesive to the mounting table 120 formed with a plurality of screw holes.

  A main imaging unit 130 is provided above the stand unit 112. The main imaging unit 130 may be detachably provided on the top of the stand unit 112 or may be provided integrally with the stand unit 112. The main imaging unit 130 includes an imaging device 131 (FIG. 9 described later) and a plurality of lenses 132 (FIG. 9 described later). In the present embodiment, the image sensor 131 is a CMOS (complementary metal oxide semiconductor) image sensor capable of detecting infrared rays. The main imaging unit 130 is arranged to face obliquely downward so that infrared rays emitted from a predetermined imaging region V (FIG. 10 to be described later) can be detected.

  The imaging region V (FIG. 10) is a certain region including the mounting table 120 of the installation unit 111 and its periphery. In the present embodiment, the imaging table V is defined as the mounting table 120 in FIG. 1 and a region protruding from the mounting table 120 by the length of the entire length of the probe 140 in FIG. The total length of the probe 140 is about 150 mm, for example. From each pixel of the main imaging unit 130, an analog electrical signal (hereinafter referred to as a light reception signal) corresponding to the detection amount is output to the control board 180.

  As shown in FIG. 3, the probe 140 includes a plurality of light emitting units 143 and a stylus 144. Each light emitting unit 143 includes a plurality of LEDs (light emitting diodes). In this example, each LED is an infrared LED, and each light emitting unit 143 periodically emits infrared light having a wavelength of 860 nm. Infrared rays emitted from the plurality of light emitting units 143 are imaged by the main imaging unit 130 of FIG.

  The stylus 144 is a rod-shaped member having a contact portion 144a that can contact the measurement object S. In the present embodiment, a spherical contact portion 144 a is provided at the tip of the stylus 144. Details of the configuration of the probe 140 will be described later.

  The sub imaging unit 150 is, for example, a CCD (charge coupled device) camera. The resolution of the sub imaging unit 150 may be lower than the resolution of the main imaging unit 130. The sub imaging unit 150 is disposed at a position where the positional relationship between the probe 140 and the contact portion 144a of the stylus 144 is known. In the present embodiment, the sub-imaging unit 150 is disposed on the end surface of the front end of a case unit 141 described later of the probe 140. A light reception signal is output from each pixel of the sub imaging unit 150 to the control board 180.

  As shown in FIG. 2, the display unit 160 is supported on the stand unit 112 of the holding unit 110, and is provided on the installation unit 111 so that the display screen of the display unit 160 faces obliquely upward. Thereby, the user can selectively visually recognize the measurement object S and the display unit 160 with a minimum movement of the line of sight, or can visually recognize the measurement object S and the display unit 160 at the same time.

  The display unit 160 is configured by, for example, a liquid crystal display panel or an organic EL (electroluminescence) panel. The display unit 160 displays an image generated by the processing device 200, an operation procedure screen of the optical coordinate measuring device 300, a measurement result, or the like based on control by the control board 180. The operation unit 170 has, for example, a plurality of operation buttons. The operation unit 170 is operated by the user when designating a part of the measuring object S to be measured.

  The control board 180 is provided in the installation unit 111 of the holding unit 110. The control board 180 is connected to the main imaging unit 130, the probe 140, the sub imaging unit 150, the display unit 160, and the operation unit 170. The processing apparatus 200 controls operations of the main imaging unit 130, the probe 140, the sub imaging unit 150, the display unit 160, and the operation unit 170 via the control board 180.

  On the control board 180, an A / D converter (analog / digital converter) and a FIFO (First In First Out) memory (not shown) are mounted. The received light signals output from the main imaging unit 130 and the sub imaging unit 150 are sampled at a constant sampling period by the A / D converter of the control board 180 and converted into a digital signal. Digital signals output from the A / D converter are sequentially stored in the FIFO memory. The digital signal stored in the FIFO memory is sequentially transferred to the processing device 200 as pixel data.

  In the present embodiment, the light emission timings of the plurality of light emitting units 143 in FIG. 3 and the imaging timings of the main imaging unit 130 in FIG. 2 are synchronized. Pixel data accumulated during the light emission period of the plurality of light emitting units 143 is transferred from the control substrate 180 to the processing apparatus 200 during the next light extinction period of the light emitting unit 143.

  As illustrated in FIG. 1, the processing device 200 includes a storage unit 210, a control unit 220, and an operation unit 230. The storage unit 210 includes a ROM (read only memory), a RAM (random access memory), and a hard disk. The storage unit 210 stores a system program. The storage unit 210 is used for processing various data and storing various data such as pixel data given from the measurement head 100.

  Control unit 220 includes a CPU (Central Processing Unit). In the present embodiment, storage unit 210 and control unit 220 are realized by a personal computer. The control unit 220 generates image data based on the pixel data given from the measurement head 100. Image data is a set of a plurality of pixel data. The controller 220 calculates the position of the contact portion 144a of the stylus 144 of the probe 140 based on the generated image data.

  The operation unit 230 includes a keyboard and a pointing device. The pointing device includes a mouse or a joystick. The operation unit 230 is operated by a user.

(2) Probe Configuration FIG. 4 is a block diagram showing the internal configuration of the probe 140. Hereinafter, the detailed configuration of the probe 140 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the probe 140 further includes a housing part 141, a grip part 142, a circuit board 145, a connection terminal 146, and a notification part 148 in addition to the plurality of light emitting parts 143 and the stylus 144. Holding regions 147 are provided on both side surfaces of the casing 141. The grip portion 142 extends in the first direction D1, and the housing portion 141 extends in a second direction D2 that intersects the first direction D1. The user operates the probe 140 while holding the grip portion 142.

  In the following, unless otherwise specified, the probe 140 is vertically and longitudinally and vertically and vertically when the user holds the grip 142 vertically (the first direction D1 faces the vertical direction). Point to.

  The housing part 141 is provided at the upper end part of the grip part 142. The grip 142 is below the center of the lower surface of the housing 141 so that the front portion of the housing 141 protrudes forward of the grip 142 and the rear portion of the housing 141 protrudes rear of the grip 142. It extends to. Here, an angle formed by the first direction D1 and the second direction D2 is defined as an angle φ formed by the grip portion 142 and the front portion of the housing portion 141. In the present embodiment, the angle φ is an acute angle and is larger than 0 ° and smaller than 90 °.

  In a state in which the grip portion 142 is held vertically, the front end of the housing portion 141 is positioned below the rear end of the housing portion 141, and the upper surface of the housing portion 141 is inclined obliquely downward from the rear end to the front end. . In this case, the user can easily turn the upper surface of the housing part 141 obliquely upward.

  In the present embodiment, the upper surface of the housing 141 is composed of a front upper surface 141a, a central upper surface 141b, and a rear upper surface 141c. The front upper surface 141a, the central upper surface 141b, and the rear upper surface 141c are each parallel to the second direction D2. The front upper surface 141a, the central upper surface 141b, and the rear upper surface 141c are perpendicular to the plane including the first and second directions D1 and D2. The front upper surface 141a and the rear upper surface 141c are on the same plane, and the central upper surface 141b is on a higher plane than the front upper surface 141a and the rear upper surface 141c.

  A glass holding member that holds the plurality of light emitting units 143 is housed inside the housing unit 141. The housing 141 is formed with a plurality of openings 141h for exposing the plurality of light emitting units 143 therein.

  In the example of FIG. 3, seven light emitting units 143 are provided in the housing unit 141. In FIG. 4, only three light emitting units 143 are illustrated, and the other four light emitting units 143 are not illustrated. Three light emitting units 143 are arranged at the front end of the casing 141, two light emitting units 143 are arranged at the center, and two light emitting units 143 are arranged at the rear end. On the front upper surface 141a, the central upper surface 141b, and the rear upper surface 141c of the casing 141, an opening 141h for exposing the three light emitting units 143 at the front end and the two light emitting units 143 at the center are exposed. An opening 141h for exposing the opening 141h and the two light emitting portions 143 at the rear end is formed.

  In this example, the three light emitting units 143 at the front end and the two light emitting units 143 at the rear end of the housing unit 141 are arranged on the same plane. The two light emitting units 143 at the center are arranged so as to be located on a plane higher than the plane on which the other light emitting units 143 are located.

  The three light emitting portions 143 at the front end are arranged so as to be exposed upward from the front upper surface 141a. The central two light emitting portions 143 are arranged so as to be exposed upward from the central portion upper surface 141b. The two light emitting portions 143 at the rear end are arranged so as to be exposed upward from the rear upper surface 141c. Infrared rays emitted from the plurality of light emitting units 143 are imaged by the main imaging unit 130 of FIG. 2 through the plurality of openings 141 h of the housing unit 141.

  The main imaging unit 130 in FIG. 2 is located obliquely above the mounting table 120. As described above, the user can easily turn the upper surface of the housing unit 141 obliquely upward. Therefore, the main imaging unit 130 can efficiently image infrared rays emitted from the plurality of light emitting units 143 of the probe 140 when measuring the shape of the measurement object S on the mounting table 120.

  FIG. 5 is a longitudinal sectional view of the front portion of the probe 140. FIG. 6 is a perspective view of the front portion of the probe 140. As shown in FIGS. 5 and 6, attachment portions 141 </ b> A, 141 </ b> B, and 141 </ b> C for attaching the stylus 144 are respectively formed on the front end surface of the housing portion 141, the front end of the upper surface, and the front end of the lower surface. 5 and 6, the stylus 144 attached to the attachment portion 141A is indicated by a solid line, and the stylus 144 attached to the attachment portions 141B and 141C is indicated by a dotted line.

  The user can arbitrarily change the attachment position of the stylus 144 between the front end surface of the housing portion 141, the front end of the upper surface, and the front end of the lower surface according to the shape of the measurement object S. Thereby, the direction of the stylus 144 can be changed. In the example of FIG. 3, the stylus 144 is attached to the attachment portion 141A. In this case, the stylus 144 faces forward and obliquely downward. On the other hand, when the stylus 144 is attached to the attachment portion 141B, the stylus 144 faces obliquely upward and forward, and when the stylus 144 is attached to the attachment portion 141C, the stylus 144 faces substantially downward.

  The circuit board 145 is housed inside the grip portion 142. By forming the grip portion 142 below the housing portion 141, the center of gravity of the probe 140 is provided below. Further, the circuit board 145 is housed inside the grip portion 142, so that the center of gravity of the probe 140 is further provided below. Thereby, the user can hold | maintain the probe 140 stably.

  A memory 145a, a power supply circuit 145b, a control circuit 145c, and an interface 145d are mounted on the circuit board 145. The memory 145a stores calibration information for correcting variations in distance between the plurality of light emitting units 143 and individual variations such as positional deviation between the plurality of light emitting units 143 and the contact portion 144a of the stylus 144. The power supply circuit 145 b supplies power to the plurality of light emitting units 143 and the notification unit 148.

  The control circuit 145c is connected to the connection terminal 146 via the interface 145d. Connection terminal 146 and control board 180 are connected by cable CA. Thereby, the operation of the plurality of light emitting units 143 and the notification unit 148 is controlled by the control board 180 via the control circuit 145c.

  The control circuit 145c gives the calibration information stored in the memory 145a to the control board 180 via the interface 145d. The control unit 220 in FIG. 1, based on the calibration information given to the control board 180, varies the distance between the plurality of light emitting units 143, misalignment between the plurality of light emitting units 143 and the contact portion 144 a of the stylus 144, etc. The variation of individual is corrected.

  The sub imaging unit 150 includes a sub imaging element 151 and a sub imaging control unit 152. The sub imaging element 151 is, for example, a CCD element. The sub imaging control unit 152 controls the imaging timing of the sub imaging element 151. Further, the sub imaging control unit 152 gives image data acquired by the sub imaging element 151 to the control board 180 via the interface 145d.

  The connection terminal 146 is disposed at the lower portion of the grip portion 142 in FIG. In this case, the cable CA has a connection terminal 146 below the grip portion 142 extending downward. Therefore, the cable CA is prevented from blocking between the plurality of light emitting units 143 and the main imaging unit 130. Further, since the weight of the cable CA is added to the lower portion of the grip portion 142, the housing portion 141 can be easily and finely operated. Note that the probe 140 and the control board 180 may be provided so as to be able to communicate wirelessly.

  The holding regions 147 are respectively formed at the center portions on both side surfaces of the housing portion 141 extending in the second direction D2. In the present embodiment, the holding region 147 includes a plurality of minute protrusions 147a arranged in the second direction D2. The plurality of protrusions 147a function as a slip stopper. For example, the user can grip the grip portion 142 with the palm and other fingers while bringing the thumb and index finger into contact with the holding regions 147 on both side surfaces of the housing portion 141, for example.

  In this case, the casing 141 can be held by sandwiching the holding region 147 of the casing 141 with the thumb and the index finger while supporting the weight of the probe 140 with the palm and three fingers. Thereby, the direction of the housing part 141 can be easily and finely operated with the thumb and the index finger. Therefore, the user can easily perform a minute operation of the probe 140. Further, the plurality of protrusions 147a in the holding region 147 prevent the probe 140 from sliding from the user's hand.

  The notification unit 148 is disposed near the rear end of the upper surface of the housing unit 141. In the present embodiment, notification unit 148 includes a plurality of green LEDs and a plurality of red LEDs. When a plurality of light emitting units 143 are present in the imaging region V (FIG. 10) of the main imaging unit 130 (FIG. 2), the notification unit 148 emits green light. On the other hand, when the plurality of light emitting units 143 do not exist in the imaging region V of the main imaging unit 130, the notification unit 148 emits red light. Thereby, it is possible to easily recognize whether or not the plurality of light emitting units 143 exist in the imaging region V of the main imaging unit 130.

  In addition, the optical coordinate measuring apparatus 300 can be provided with a plurality of probes 140. The user can measure the measuring object S by selecting the probe 140 provided with the stylus 144 having an appropriate shape at an appropriate position according to the shape of the measuring object S. In the control unit 220, a probe 140 to be used among a plurality of probes 140 corresponding to the measurement position of the measurement object S is registered in advance.

  The notification unit 148 of the probe 140 to be used emits light in green or red. Specifically, when a plurality of light emitting units 143 of the probe 140 to be used are present in the imaging region V (FIG. 10) of the main imaging unit 130, the notification unit 148 of the probe 140 emits green light. . On the other hand, when the plurality of light emitting units 143 of the probe 140 to be used do not exist in the imaging region V of the main imaging unit 130, the notification unit 148 of the probe 140 emits red light. The notification units 148 of the other probes 140 do not emit light. Thereby, the user can easily recognize the probe 140 to be used.

  In the present embodiment, the plurality of light emitting portions 143 of the probes 140 other than the probe 140 to be used do not emit light. Therefore, measurement is prevented from being performed using the probe 140 other than the probe 140 to be used.

  The operation unit 170 in FIG. 2 may be provided integrally with the probe 140. For example, one or more operation buttons may be provided as the operation unit 170 on the grip unit 142. In this case, the user can operate the operation unit 170 while holding the grip unit 142 with one hand.

(3) Probe Placement Member FIGS. 7 and 8 are views showing a probe placement member for placing the probe 140 of FIG. When the probe 140 is not used, the probe 140 is placed on the probe placement member 10. FIG. 7A is a plan view of the probe mounting member 10 in a state where the probe 140 is mounted in a posture in which one side surface of the probe 140 faces upward. FIG. 7B is a plan view of the probe mounting member 10 in a state where the probe 140 is mounted with the other side surface of the probe 140 facing upward. FIG. 8A shows a side view of the probe mounting member 10 before the probe 140 is mounted. FIG. 8B shows a side view of the probe mounting member 10 in a state where the probe 140 is mounted.

  As shown in FIGS. 7A and 7B and FIGS. 8A and 8B, the probe mounting member 10 includes a bottom portion 11, a side wall portion 12, and protruding portions 13 and 14. In the present embodiment, the bottom part 11, the side wall part 12, and the protruding parts 13 and 14 are integrally formed of resin. The bottom part 11, the side wall part 12, and the protrusion parts 13 and 14 can be manufactured by a three-dimensional printer, for example.

  The bottom 11 has edges 11a, 11b, 11c, and 11d. The edge portion 11a and the edge portion 11c face each other, and the edge portion 11b and the edge portion 11d face each other. A side wall portion 12 is disposed on the bottom portion 11 along the edge portion 11a. The inner side surface 12 a of the side wall portion 12 has a shape that comes into contact with the upper surface of the housing portion 141 of the probe 140. The protruding portion 13 is arranged at a corner portion on the bottom portion 11 formed by the edge portion 11b and the edge portion 11c. The protruding portion 14 is disposed at a corner portion on the bottom portion 11 formed by the edge portion 11d and the edge portion 11c.

  As a result, a gap 10 a is formed between the side wall portion 12 and the protruding portion 13, a gap 10 b is formed between the side wall portion 12 and the protruding portion 14, and a gap 10 c is formed between the protruding portion 13 and the protruding portion 14. Is formed. The widths of the gap 10a and the gap 10b are substantially equal to or slightly larger than the front and rear dimensions of the housing part 141 of the probe 140 in the vertical direction. The width of the gap 10c is sufficiently larger than the dimension of the cross section of the grip portion 142 of the probe 140 in the front-rear direction.

  In this configuration, when the probe 140 is placed on the bottom portion 11, the upper surface of the housing portion 141 comes into contact with the inner side surface 12 a of the side wall portion 12. Thereby, the plurality of light emitting portions 143 on the upper surface of the probe 140 are protected by the side wall portion 12. Further, one of the front part and the rear part of the housing part 141 is held between the inner side surface 12 a of the side wall part 12 and the inner side surface 13 a of the protruding part 13, and the other of the front part and rear part of the housing part 141 is the side wall part 12. The inner side surface 12a of the projection 14 and the inner side surface 14a of the protruding portion 14 are sandwiched. Further, the gripping part 142 and the cable CA protrude outward from the edge part 11 c of the bottom part 11.

  According to this configuration, as shown in FIGS. 7A and 7B, the probe 140 can be placed on the probe placement member 10 in a posture in which any side surface of the probe 140 is directed upward. Therefore, when mounting the probe 140 on the probe mounting member 10, it is not necessary to align the direction of the probe 140 in a certain direction. Therefore, the probe 140 can be easily and quickly placed on the probe placement member 10 regardless of whether the user's dominant hand is right or left.

  Further, in the state where the probe 140 is placed on the probe placement member 10, the front end of the housing part 141 including the attachment parts 141 </ b> A to 141 </ b> C protrudes outward from the edge part 11 b or the edge part 11 c of the bottom part 11. Therefore, the probe 140 can be reliably placed on the probe placement member 10 even when the stylus 144 is attached to any of the attachment portions 141A to 141C. Further, the probe 140 can be reliably placed on the probe placement member 10 regardless of the length of the stylus 144 attached to the attachment portions 141A to 141C.

(4) Configuration of Main Imaging Unit FIG. 9 is a diagram for describing the configuration of the main imaging unit 130. FIG. 9A is a schematic cross-sectional view of the main imaging unit 130, and FIG. 9B is an external perspective view of the main imaging unit 130.

  As shown in FIG. 9A, the main imaging unit 130 includes an element holding unit 130a, a lens holding unit 130b, an imaging element 131, and a plurality of lenses 132. The element holding part 130a and the lens holding part 130b are made of, for example, a metal material. The element holding part 130a and the lens holding part 130b may be provided as a common member by integral molding, or may be provided as separate members.

  A concave portion 133 having a rectangular cross section is formed on one surface of the element holding portion 130a. The image sensor 131 is fitted in the recess 133. In order to prevent displacement of the image sensor 131, the image sensor 131 may be fixed in the recess 133. A through hole 134 is formed from the bottom surface of the recess 133 to the other surface parallel to the one surface of the element holding portion 130a.

  The lens holding part 130b has a cylindrical shape. One end portion of the lens holding portion 130b is fixed to the other surface of the element holding portion 130a. The lens holding unit 130b holds a plurality of lenses 132 having various sizes. The plurality of lenses 132 are arranged so as to overlap the through holes 134 of the element holding portion 130a and have optical axes that coincide with each other. Light enters the image sensor 131 through the plurality of lenses 132 from the other end of the lens holding portion 130b.

(5) Detection by Main Imaging Unit As described above, the main imaging unit 130 detects infrared rays emitted from the plurality of light emitting units 143 of the probe 140. FIG. 10 is a schematic diagram for explaining the relationship between the main imaging unit 130 and the plurality of light emitting units 143. In FIG. 10, a description will be given using a so-called pinhole camera model for easy understanding. FIG. 10 shows only one lens 132 among the plurality of lenses 132 of the main imaging unit 130, and light is guided to the imaging element 131 so as to pass through the main point 132 a of the lens 132.

  As shown in FIG. 10, the main imaging unit 130 has a certain angle of view (viewing angle) θ. The imaging region V is included in the range of the angle of view θ of the main imaging unit 130. When a plurality of light emitting units 143 are located in the imaging region V, infrared rays emitted from the light emitting units 143 are incident on the imaging element 131 through the principal point 132a of the lens 132.

  In this case, the direction from the principal point 132a of the lens 132 toward each light emitting unit 143 is specified based on the light receiving position P of the imaging element 131. In the example of FIG. 10, each light emitting unit 143 is positioned on each straight line passing through each light receiving position P and the main point 132 a of the lens 132, as indicated by a dashed line. Moreover, the relative positional relationship of the several light emission part 143 is beforehand memorize | stored in the memory | storage part 210 of FIG. 1, for example.

  Based on the direction from the principal point 132a of the lens 132 to each light emitting unit 143 and the positional relationship of the plurality of light emitting units 143, the position of the center of each light emitting unit 143 is uniquely determined. In the present embodiment, the x axis, the y axis, and the z axis that are orthogonal to each other are defined, and the absolute position in the imaging region V is represented by three-dimensional coordinates. The control unit 220 in FIG. 1 calculates the coordinates of the center of each light emitting unit 143 based on the light receiving position P of the image sensor 131 and the positional relationship between the plurality of light emitting units 143 stored in advance.

  Based on the calculated coordinates of the center of each light emitting section 143, the coordinates of the contact position between the contact section 144a (FIG. 3) of the probe 140 and the measuring object S are calculated by the control section 220 of FIG.

  For example, the positional relationship between the center of each light emitting unit 143 and the center of the contact unit 144a (FIG. 3) is stored in advance in the storage unit 210 of FIG. Based on the calculated coordinates of the center of each light emitting part 143 and the positional relationship between the center of each light emitting part 143 and the center of the contact part 144a stored in advance, the coordinates of the center of the contact part 144a are specified.

  Further, the posture of the probe 140 is specified based on the coordinates of the center of each light emitting unit 143. Thereby, the direction of the stylus 144 is specified. Further, the moving direction of the contact portion 144a is specified based on the change in the coordinates of the center of each light emitting portion 143. Usually, the contact portion 144a is brought close to the surface of the measuring object S to be contacted. Therefore, the relative positional relationship between the center of the contact portion 144a and the contact position is estimated based on the specified direction of the stylus 144 and the moving direction of the contact portion 144a. Based on the estimated positional relationship, the coordinates of the contact position between the contact portion 144a and the measuring object S are calculated from the coordinates of the center of the contact portion 144a.

  Note that a sensor that detects the direction of the force applied from the measurement object S to the contact portion 144a may be provided in the probe 140. In that case, the coordinates of the contact position between the contact portion 144a and the measurement object S can be calculated based on the detection result of the sensor.

  If there are individual differences in the positional relationship between the imaging element 131 and the plurality of lenses 132, the positional relationship between the plurality of light emitting units 143, the positional relationship between the plurality of light emitting units 143 and the contact unit 144a, the calculated coordinates vary. Occurs. Therefore, it is preferable to perform calibration before the measurement by the optical coordinate measuring apparatus 300 to prevent variation due to individual differences. The calibration result may be held as unique data, and the unique data may be referred to when measuring the measuring object S, or each positional relationship described above before actually performing measurement based on the calibration result. Individual differences may be adjusted.

(6) Measurement Example A measurement example of the dimension of the measuring object S by the optical coordinate measuring apparatus 300 will be described. FIG. 11 is a diagram illustrating an example of an image displayed on the display unit 160 of FIG. FIG. 12 is a diagram illustrating an example of the measurement object S.

  FIG. 11 shows an image VI (hereinafter referred to as an imaging area virtual image) VI that virtually represents the imaging area V. As described above, the x-axis, the y-axis, and the z-axis are set in the imaging region V, respectively. In this example, the x axis and the y axis are set so as to be parallel to and orthogonal to the upper surface of the mounting table 120, and the z axis is set perpendicular to the upper surface of the mounting table 120. The center of the mounting table 120 is set to the origin O. The imaging region virtual image VI in FIG. 11 includes the origin O, the x-axis, the y-axis, and the z-axis, and also includes a line representing the outer periphery of the mounting table 120 (dotted line in FIG. 11).

  The measuring object S in FIG. 12 has a rectangular parallelepiped shape. In this example, the distance between one side surface Sa of the measuring object S and the opposite side surface Sb is measured. The side surfaces Sa and Sb of the measuring object S are each perpendicular to the x axis.

  13-17 is a figure for demonstrating the specific measurement example in the measuring object S of FIG. FIGS. 13A and 15A are front views showing the positional relationship between the mounting table 120, the main imaging unit 130, the probe 140, and the measurement object S, and FIGS. 13B and 15B. These are external appearance perspective views of the probe 140 and the measuring object S. FIG. 14, 16, and 17 show examples of the imaging region virtual image VI displayed on the display unit 160.

  13A and 13B, the contact portion 144a of the stylus 144 is placed on the side surface Sa of the measurement object S so that the plurality of light emitting portions 143 of the probe 140 are positioned in the imaging region V. Touched. In this state, when the operation unit 170 in FIG. 1 is operated, as shown in FIG. 13B, the contact position between the measurement object S and the contact part 144a is set as the measurement position M1a. In this case, the coordinates of the measurement position M1a are specified.

  Similarly, three positions on the side surface Sa of the measurement object S are set as measurement positions M2a, M3a, and M4a, and the coordinates of the measurement positions M2a, M3a, and M4a are specified. Subsequently, when the operation unit 170 or the operation unit 230 of FIG. 1 is operated, a plane passing through the measurement positions M1a to M4a is set as a measurement plane ML1 corresponding to the side surface Sa of the measurement object S. In this case, as shown in FIG. 14, the set measurement plane ML1 is superimposed on the imaging region virtual image VI.

  Subsequently, as shown in FIGS. 15A and 15B, the contact portion 144 a of the stylus 144 is placed on the measurement object S so that the plurality of light emitting portions 143 of the probe 140 are positioned in the imaging region V. It contacts the side surface Sb. In this state, when the operation unit 170 of FIG. 1 is operated, as shown in FIG. 15B, the contact position between the measurement object S and the contact part 144a is set as the measurement position M1b. In this case, the coordinates of the measurement position M1b are specified.

  Similarly, three positions on the side surface Sb of the measurement object S are set as measurement positions M2b, M3b, and M4b, and the coordinates of the measurement positions M2b, M3b, and M4b are specified. Subsequently, the plane passing through the measurement positions M1b to M4b is set as the measurement plane ML2 corresponding to the side surface Sb of the measurement object S by operating the operation unit 170 or the operation unit 230 of FIG. In this case, as shown in FIG. 16, the set measurement plane ML2 is superimposed on the imaging region virtual image VI in addition to the measurement plane ML1.

  Subsequently, when the operation unit 170 or the operation unit 230 in FIG. 1 is operated, the control unit 220 in FIG. 1 calculates the distance between the determined measurement planes ML1 and ML2, and the calculation is performed as shown in FIG. The result is displayed on the imaging area virtual image VI. The calculation result may be displayed on the display unit 160 separately from the imaging region virtual image VI. In addition, the calculation condition of the distance between the two measurement planes may be appropriately set by the user.

  In this example, one measurement plane is determined based on four measurement positions, but one measurement plane can be set based on a minimum of three measurement positions. On the other hand, by setting four or more measurement positions, the measurement plane corresponding to the measurement object S can be set more accurately. Further, the flatness of the surface of the measuring object S can be obtained based on four or more measurement positions.

  In this example, a plane (measurement plane) passing through a plurality of designated positions (measurement positions) is set as a measurement target, but other geometric shapes are set as measurement targets according to the shape of the measurement target. It may be set. For example, a cylinder or a sphere passing through a plurality of designated positions may be set as a measurement target. In this case, the diameter of the set cross section of the cylinder or the radius of the sphere can be obtained. Further, an angle or an area related to the set geometric shape may be obtained.

  When the optical coordinate measuring apparatus 300 according to the present embodiment is used for quality inspection of manufactured parts, the geometric features to be measured are optical before actual measurement of the measurement object (manufactured part). It is preset in the coordinate measuring apparatus 300. The measurement object is measured with respect to the geometric feature, and whether or not the measurement object has a designed shape is inspected based on the measurement result. In this case, a pass / fail criterion for each of the plurality of geometric features to be measured is preset in the optical coordinate measuring device 300, and the optical coordinate measuring device 300 measures the measurement object related to the plurality of geometric features. The result may be compared with a pass / fail criterion relating to a plurality of preset geometric features, and pass / fail judgment may be performed for each geometric feature. Also, a plurality of geometric feature measurement procedures and pass / fail criteria relating to the plurality of geometric features are preset in the optical coordinate measuring device 300, and the optical coordinate measuring device 300 determines pass / fail for each geometric feature. In addition to performing the determination, the pass / fail determination of the measurement object may be performed comprehensively based on the comparison result between the measurement results regarding the plurality of geometric features and the pass / fail criteria.

(7) Usage Example of Imaging Unit By imaging the measurement object S by the sub imaging unit 150 in FIG. 3, an image of the measurement object S can be displayed on the display unit 160. Hereinafter, an image obtained by the sub imaging unit 150 is referred to as a captured image.

  The positional relationship between the plurality of light emitting units 143 and the sub imaging unit 150 and the characteristics (such as the angle of view and distortion) of the sub imaging unit 150 are stored in advance as imaging information in the storage unit 210 of FIG. Therefore, when the plurality of light emitting units 143 are in the imaging region V, the region captured by the sub imaging unit 150 is recognized by the control unit 220 in FIG. That is, the three-dimensional space corresponding to the captured image is recognized by the control unit 220.

  As described above, information relating to measurement (hereinafter referred to as measurement information) such as a measurement position and a measurement plane is set in a three-dimensional space. In the present embodiment, these pieces of measurement information can be associated with the captured image, and the measurement information can be superimposed on the captured image.

  FIG. 18 is a diagram illustrating an example in which measurement information is superimposed and displayed on a captured image. In the example of FIG. 18, the side surface Sa of the measurement object S is imaged by the sub imaging unit 150. A plurality of spherical images P1a to P4a representing the measurement positions M1a to M4a are superimposed on the captured image SI, and an image PL1 representing the measurement plane ML1 is superimposed.

  As described above, the measurement information is superimposed on the captured image obtained by actually imaging the measurement object S, so that the user can easily grasp the measurement information visually. Further, when the same measurement is performed on the other measurement object S after the measurement on the one measurement object S, the other measurement object is obtained by referring to the captured image on which the measurement information is superimposed. Measurement with respect to S can be easily performed.

(8) Effect In the present embodiment, the user contacts the measurement object S with the contact portion 144a of the stylus 144 provided at the front end of the housing portion 141 while holding the grip portion 142 of the probe 140. Can be made. In this case, since the plurality of light emitting units 143 are provided on the upper surface of the housing unit 141, the plurality of light emitting units 143 and the main imaging unit 130 are not blocked by the user's fingers or the like. Therefore, the user does not need to hold the probe 140 in an unnatural posture so as not to block the plurality of light emitting units 143. In addition, since the grip portion 142 is formed below the housing portion 141, the center of gravity of the probe 140 is further provided below. Thereby, the user can hold | maintain the probe 140 stably. As a result, the user can easily handle the probe 140 without burden.

(9) First Modification A probe in the first modification will be described with respect to differences from the probe 140 in FIG. FIG. 19 is a schematic diagram showing the configuration of the probe in the first modification. 19A and 19B show a side view and a top view of the probe 140, respectively. The probe 140 in FIG. 19 differs from the probe 140 in FIG. 3 in the following points.

  As shown in FIG. 19A, the gripping unit 142 is provided with a movement instruction unit 149. In the example of FIG. 19A, the movement instruction unit 149 is disposed on the upper part of the front surface of the grip unit 142. The movement instruction unit 149 includes one or a plurality of buttons or levers. Further, as shown in FIG. 19B, the area of the opening 141h in the front upper surface 141a, the central upper surface 141b, and the rear upper surface 141c is the same as that of the front upper surface 141a, the central upper surface 141b, and the rear upper surface 141c in FIG. Each area is larger than the area of 141h.

  In the first modification, a glass holding member (not shown) that holds the plurality of light emitting units 143 and the stylus 144 are configured to be movable together. The user can move the stylus 144 and the plurality of light emitting units 143 integrally in the directions indicated by the arrows A and B by operating the movement instructing unit 149 while holding the holding unit 142. Here, the direction indicated by the arrow A is the second direction D2, and the direction indicated by the arrow B is a direction orthogonal to the side surface of the casing 141.

  FIG. 20 is a schematic diagram showing the probe 140 with the stylus 144 moved. In the example of FIG. 20A, the stylus 144 is moved forward along the arrow A in FIG. In the example of FIG. 20B, the stylus 144 is moved in one direction along the arrow B in FIG. In the example of FIG. 20 (c), the stylus 144 is moved forward along the arrow A in FIG. 19 (b), and the stylus 144 is moved in the other direction along the arrow B in FIG. 19 (b). .

  According to this configuration, the user can move the stylus 144 to a position suitable for the shape of the measurement object S. Thereby, the measurement object S can be measured more easily. Even when the stylus 144 is moved, the positional relationship between the contact portion 144a of the stylus 144 and the plurality of light emitting portions 143 does not change. Therefore, the user can move the position of the stylus 144 without performing calibration such as adjustment of the positional relationship between the contact portion 144a of the stylus 144 and the plurality of light emitting portions 143.

(10) Second Modification A probe in the second modification will be described with respect to differences from the probe 140 in FIG. FIG. 21 is a schematic side view showing the configuration of the probe in the second modification. The probe 140 of FIG. 21 differs from the probe 140 of FIG. 3 in the following points.

  As shown in FIG. 21, a protrusion 142a is formed at the bottom of the grip 142 of the probe 140 so as to extend rearward. The user can operate the probe 140 with less burden by gripping the grip 142 with the wrist 142 in contact with the protrusion 142a.

  Further, similarly to the probe 140 of FIG. 3, the connection terminal 146 may be provided in the lower portion of the probe 140. Alternatively, the connection terminal 146 may be provided on the rear end surface of the protruding portion 142a as shown by a dotted line in FIG. Alternatively, the connection terminal 146 may be provided on the lower surface of the protruding portion 142a.

(11) Other Embodiments (a) In the above embodiment, the light emitting unit 143 emitted by the LED is used as the marker of the probe 140 imaged by the main imaging unit 130. It is not limited to. For example, a light emitting part that emits light from another light emitting element such as a filament may be used as a marker, or a non-light emitting part having a specific color such as a fluorescent color may be used as a marker, and has a specific shape. A non-light emitting part may be used as a marker.

  (B) In the above embodiment, the notification unit 148 informs the user of the probe 140 to be used by emitting light with a specific color or extinguishing the light, and the plurality of light emitting units 143 include the main imaging unit. The user is informed whether or not the image capturing area V exists within 130 imaging regions V, but the present invention is not limited to this.

  The notification unit 148 notifies the user of the probe 140 to be used by emitting light in an arbitrary pattern such as light emission, blinking, and extinction, and a plurality of light emission units 143 exist in the imaging region V of the main imaging unit 130 The user may be informed whether or not to do so. Alternatively, the notification unit 148 notifies the user of the probe 140 to be used by outputting voice or other signals, and whether or not the plurality of light emitting units 143 are present in the imaging region V of the main imaging unit 130. You may inform the user.

  (C) In the above embodiment, the angle φ formed by the first direction D1 and the second direction D2 is an acute angle, but is not limited thereto. The angle φ formed by the first direction D1 and the second direction D2 may be a right angle.

(12) Correspondence between each component of claim and each part of embodiment The following describes an example of a correspondence between each component of the claim and each part of the embodiment. It is not limited.

  In the above embodiment, the measurement object S is an example of a measurement object, the mounting table 120 is an example of a mounting table, the light emitting unit 143 is an example of a marker, and the contact unit 144a is an example of a contact unit. Yes, the probe 140 is an example of a probe. The main imaging unit 130 and the control unit 220 are examples of an imaging unit, the control unit 220 is an example of a calculation unit, a light emission control unit, and a setting unit, and the optical coordinate measurement device 300 is an example of an optical coordinate measurement device. .

  The grip portion 142 is an example of a grip portion, the housing portion 141 is an example of a main body portion, the holding region 147 is an example of first and second side surfaces, and the power supply circuit 145b is an example of a power supply device. The connection terminal 146 is an example of a connection terminal, the notification unit 148 is an example of first and second notification units, the imaging region V is an example of an imaging region, and the movement instruction unit 149 is an example of a movement instruction unit. is there.

  As each constituent element in the claims, various other elements having configurations or functions described in the claims can be used.

  The present invention can be effectively used for measuring dimensions and the like of various measurement objects.

DESCRIPTION OF SYMBOLS 10 Probe mounting member 10a-10c Clearance 11 Bottom part 11a-11d Edge part 12 Side wall part 12a-14a Inner side surface 13,14 Protrusion part 100 Measurement head 110 Holding part 111 Installation part 112 Stand part 120 Mounting base 130 Main imaging part 130a Element Holding part 130b Lens holding part 131 Imaging element 132 Lens 132a Main point 133 Concave part 134 Through hole 140 Probe 141 Housing part 141a Front upper surface 141A to 141C Mounting part 141b Central upper surface 141c Rear upper surface 141h Opening 142 Holding part 142a Protruding part 14 Light emitting part 144 Stylus 144a Contact part 145 Circuit board 145a Memory 145b Power supply circuit 145c Control circuit 145d Interface 146 Connection terminal 147 Holding area 147a Projection 148 Light emitting display part 1 49 movement instruction unit 150 sub imaging unit 151 sub imaging device 152 sub imaging control unit 160 display unit 170, 230 operation unit 180 control board 200 processing device 210 storage unit 220 control unit 300 optical coordinate measuring device CA cable D1 first direction D2 Second direction S Measurement object Sa, Sb Side surface V Imaging region VI Imaging region virtual image

Claims (11)

A mounting table on which a measurement object is mounted;
A probe having a plurality of markers and a contact portion that is in contact with the measurement object;
An imaging unit that generates image data corresponding to the images of the plurality of markers by imaging the plurality of markers of the probe;
A calculation unit that calculates the coordinates of the contact position between the measurement object and the contact unit based on the image data generated by the imaging unit;
The probe is
A grip portion provided to extend in a first direction and gripped by a user;
A main body provided at the upper end of the grip portion so as to extend in a second direction that forms an angle with respect to the first direction,
The optical coordinate measuring device, wherein the plurality of markers are provided on an upper surface of the main body, and the contact portion is provided on an end of the main body. The optical coordinate measuring device according to claim 1, wherein the main body has first and second side surfaces that can be sandwiched between two fingers of an operator. The optical coordinate measuring device according to claim 2, wherein the first and second side surfaces have a non-slip function. The body part is provided at an upper end part of the grip part so that a portion from the end part to the grip part of the body part forms an acute angle with respect to the grip part. The optical coordinate measuring device according to item. The optical coordinate measuring device according to any one of claims 1 to 4, wherein each of the plurality of markers includes a light emitting element. The optical coordinate measuring device according to claim 5, wherein a power supply device that supplies electric power to the plurality of markers is arranged in the grip portion of the probe. A light emission control unit for controlling the light emission operation of the plurality of markers;
A connection terminal to which a cable is attached is formed at the lower part of the grip portion of the probe,
The optical coordinate measuring device according to claim 5 or 6, wherein the plurality of markers are connected to the light emission control unit through the cable attached to the connection terminal. 8. The probe according to claim 1, further comprising: a first notification unit for notifying a user whether or not the plurality of markers are present in an imaging region of the imaging unit. 9. Optical coordinate measuring device. A plurality of the probes are provided,
The optical coordinate measuring device further includes a setting unit configured to set a probe to be used among the plurality of probes corresponding to a measurement part of a measurement object,
Each of the plurality of probes further includes a second notification unit for notifying a user whether or not the probe should be used based on the setting content of the setting unit. The optical coordinate measuring apparatus as described in any one of Claims. The plurality of markers and the contact portion are provided on the main body portion of the probe so as to be integrally movable in the second direction or in a direction crossing the first and second directions,
The optical coordinate measuring device according to any one of claims 1 to 9, wherein a movement instruction unit for instructing movement of the plurality of markers and the contact unit is provided in the grip portion of the probe. A probe that has a contact portion that can contact a measurement object and can be imaged by an imaging unit of an optical coordinate measuring device,
A grip portion provided to extend in a first direction and gripped by a user;
A main body provided at the upper end of the grip portion so as to extend in a second direction that forms an angle with respect to the first direction;
The probe in which the some marker imaged by the said imaging part is provided in the upper surface of the said main-body part, and the said contact part is provided in the edge part of the said main-body part.

Images