JP2009109490A - Area recognition scope for optical sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an area recognition scope which is used for an optical sensor using invisible rays, such as infrared rays, for detection of an object and can simply recognize the detection area. <P>SOLUTION: Since a first mirror 7 reflects the peripheral region 22 comparably with the center region 21 for displaying an incoming light display body 9, by adjusting the angle of view of the area recognition scope 5 for an optional position of the detection area E, when a person looks into an eye window 6a, adjusting the field of view of the area recognition scope 5 to the optional position of the detection area E becomes easier; comparison of the center position 21 displayed by the incoming light display object 9 with its peripheral region 22 becomes easier; the peripheral region 22 can be seen large, even when the center region 21 is not seen at the optional position of the detection area E; and thus recognizing which place is seen in the detection area E becomes easier, and the optional position of the detection area E can be recognized easily. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an area recognition scope that is used in an optical sensor that detects an object using invisible light such as infrared rays and that is used to recognize a detection area of the optical sensor.

  Conventionally, an optical sensor such as an automatic door sensor that detects an object such as a human body by using an invisible light that cannot be seen by human eyes such as infrared rays is known. This optical sensor is formed by an optical body. A detection wave such as an infrared ray is transmitted from the projector toward the detection area, and the object is detected when the light reception signal generated when the detection wave reflected by the object is received by the light receiver exceeds the set level.

  As an example of this optical sensor, there is an automatic door sensor that is installed on the blind or ceiling above the door, detects a detection wave from a human body in a detection area near the door, and automatically opens and closes the door (patent) Reference 1).

By the way, the detection area formed by the optical body of the optical sensor is also difficult to recognize because it is not visible to the human eye. In this case, a cylindrical shape provided so that the viewing angle can be adjusted in conjunction with the optical body. It is possible to recognize the detection area by attaching an optical scope to the projector or receiver, placing a reference object at a predetermined position in the detection area, and adjusting the viewing angle so that this object can be seen while looking through the optical scope. It is done.
JP 2002-285755 A

  However, even with such an optical scope, there are cases where it is difficult to recognize which place is being viewed with respect to the background when the detection area is small. In particular, when the installation location is dark or the location where the detection area is provided is a uniform surface, it is more difficult to recognize which location is being viewed. Further, when detection areas divided into a plurality of areas are provided, it is more difficult to recognize which area is being viewed.

  The present invention solves the above problems and provides an area recognition scope for an optical sensor that can be used for an optical sensor that detects an object using invisible light such as infrared rays and can easily recognize a detection area. With the goal.

  In order to achieve the above object, an area recognition scope for an optical sensor according to one configuration of the present invention is attached to a projector or a light receiver that constitutes the optical sensor and works in conjunction with an optical body that forms a detection area of the optical sensor. A cylindrical scope main body provided with an adjustable viewing angle and used for recognizing a detection area of the optical sensor, the scope main body comprising an eyepiece window and a daylighting window And a first mirror disposed on the optical axis and in the vicinity of the eyepiece window, and a light incident display body disposed in the vicinity of the daylighting window, and when looking closely at the eyepiece window, The first mirror projects a peripheral region outside the central region that can be seen through the daylighting window, and the incident light display body can transmit the incident light in the central region and can visually recognize the light incident state in the daylighting window. View before and further Viewing angle of the area recognizing scope for any position is adjusted of the detection area, the first mirror, in which the light incident display body mirror the central region and can be compared to the peripheral region to be displayed.

  According to this configuration, when the eye is viewed close to the eyepiece window, by adjusting the viewing angle of the area recognition scope with respect to an arbitrary position of the detection area, the first mirror displays the center displayed by the light incident display body. Since the peripheral area can be compared with the area, it is easy to adjust the field of view of the area recognition scope to an arbitrary position of the detection area, and the contrast between the central area displayed by the incident light display body and the peripheral area can be compared. Even if the center region at an arbitrary position of the detection area is not visible, the peripheral region can be widened, so that it is easy to recognize where the detection area is viewed, and the arbitrary position of the detection area can be easily recognized.

  An area recognition scope for an optical sensor according to another configuration of the present invention is attached to a projector or a light receiver that constitutes an optical sensor, and can adjust a viewing angle in conjunction with an optical body that forms a detection area of the optical sensor. It has a cylindrical scope body provided, and is used for recognizing the detection area of the optical sensor, and the scope body includes an eyepiece window, a lighting window, and an optical axis, respectively. A first mirror disposed in the vicinity of the eyepiece window, a second mirror disposed between the daylighting window and the eyepiece window, and a light incident display body disposed in the vicinity of the daylighting window, When the eye is viewed close to the eyepiece window, the second mirror projects a central region that can be seen through the daylighting window, and the first mirror projects a peripheral region outside the central region, and displays the incident light. The body inside said The incident light in the area can be transmitted and the light incident state into the daylighting window is displayed in a visible manner. Further, the viewing angle of the area recognition scope is adjusted with respect to an arbitrary spot position in the detection area, and the second A mirror projects the arbitrary spot position of the detection area matched with the central region and the light incident display body, and the first mirror reflects the arbitrary spot position of the superimposed detection area and the light incident display body. The peripheral area is projected so that it can be compared with the central area displayed by.

  According to this configuration, when the eye is viewed close to the eyepiece window, the second mirror can be viewed through the daylighting window by adjusting the viewing angle of the area recognition scope with respect to the arbitrary spot position of the detection area. An arbitrary spot position of the detection area matched with the light incident display body is displayed in an overlapping manner, and the first mirror can be compared with the arbitrary spot position of the overlapped detection area and the central area displayed by the light incident display body. Since the peripheral area is projected, it is easy to match the field of view of the area recognition scope to the arbitrary spot position of the detection area, and the arbitrary area of the detection area and the center area displayed by the light incident display body and the peripheral area Because the peripheral area of the spot position looks wide, it is easy to recognize where in the detection area you are looking at, The rear of the spot position can be easily recognized.

  Preferably, a detection area is formed below the optical sensor, and the scope body has a substantially inverted V shape in a side view having a bent portion, and has a diameter from an outer peripheral surface in the vicinity of the eyepiece window of the scope body. A reflection surface of the first mirror that extends in the direction and is formed in an annular shape and a reflection surface of the second mirror that is provided at the bent portion in the scope main body are arranged in parallel to each other. Therefore, since the spot position of the detection area and its peripheral area are overlapped and projected by the parallel reflecting surfaces of the first mirror and the second mirror, and the second mirror directly reflects the peripheral area of the spot position of the detection area, the structure is simple. Thus, the spot position of the detection area can be recognized more easily.

  Preferably, the light incident display body is a colored translucent plate provided in the vicinity of the eyepiece window and orthogonal to the optical axis direction, and the colored translucent plate is viewed when looking closely at the eyepiece window. The light incident state from the central region into the daylighting window is displayed so as to be visible. Therefore, it becomes easier to match the field of view of the area recognition scope to an arbitrary spot position in the detection area.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing an installation state of an automatic door sensor attached to an upper part C of a door D as an example of the optical sensor 1. The optical sensor 1 detects an object using light rays that are invisible to human eyes, such as infrared rays, and the door D is automatically opened and closed based on this detection.

  The optical sensor 1 shown in the bottom view of FIG. 2 is, for example, a near-infrared reflection type sensor, and an optical unit 3 is accommodated in the sensor main body 2. The optical unit 3 includes a projector and a light receiver (not shown) and a plurality of lenses. An optical body 10, and a right / left angle adjusting screw 11 and a depth angle adjusting screw 12 which are connected to the optical body 10 and adjust the angle thereof. A detection area E (for example, 1 to 6 rows) divided into a plurality of parts by the optical body 10 as shown in FIG. 1 is formed below the optical sensor 1, and the left-right direction X of the detection area E by the left-right angle adjusting screw 11. And the angle in the depth direction Y is adjusted by the depth angle adjusting screw 12.

  Further, the optical unit 3 is attached to a projector or a light receiver, and is a cylindrical scope main body 6 provided so that the viewing angle can be adjusted in conjunction with the optical body 10 by adjusting the angle of the angle adjusting screws 11 and 12. And an area recognition scope 5 for an optical sensor used for simply recognizing the detection area E. Note that an AIR (active infrared ray) sensor or the like may be used instead of the near infrared reflection type sensor, or may be applied to, for example, a security sensor other than the automatic door sensor.

  FIG. 3 is a schematic side view showing the area recognition scope for an optical sensor according to the first embodiment of the present invention. This area recognition scope 5 is used for recognizing the detection area E of the optical sensor 1 and is connected to the optical body 10 forming the detection area E of the optical sensor 1, for example, by adjusting the angle of the depth angle adjusting screw 12. The body 10 and the scope main body 6 are interlocked and rotated around the rotation axis O, and the viewing angle of the area recognition scope 5 is adjusted.

  The scope main body 6 includes an eyepiece window 6a, a daylighting window 6b, a first mirror (cylinder entrance mirror) 7 disposed on the optical axis and near the eyepiece window 6a, and an entrance disposed near the daylighting window 6b. An optical display (colored translucent plate) 9 is provided. In addition, you may arrange | position the light-incidence display body 9 between the lighting window 6b and the eyepiece window 6a.

  The first mirror 7 projects the peripheral region 22 (FIG. 4 (B)) outside the central region 21 seen through the daylighting window 5b when the eyepiece window 5a is viewed closely, and the incident light display body 9 The light incident state of the central area 21 can be transmitted and the light incident state into the daylighting window 2b is displayed so as to be visible.

  In this example, the light incident display body 9 is made of a colored translucent plate such as red, which is attached to the daylighting window 6b and provided in the scope main body 6 at right angles to the optical axis direction. The display body 6 displays the light incident state in the daylighting window 2b by the incident light of the central region 21 by the red color of the colored translucent plate (red circle 20 in FIG. 4B), and the field of view of the area recognition scope 5 The direction can be recognized. The light incident display body 9 is not limited to red, and blue, green and other colors can be used.

  In order to recognize the detection area E of the optical sensor 1, an arbitrary position of the detection area E is selected (FIG. 1), and when looking closely at the eyepiece window 6a, the arbitrary position of FIG. By adjusting the angle of the angle adjusting screws 11 and 12, the viewing angle of the area recognition scope 5 in FIG. 3 is adjusted, so that the first mirror 7 can be compared with the central region 21 displayed by the light incident display body 9 and its peripheral region. 22 is shown.

  As shown in FIG. 3, in this example, the scope main body 6 constituting the area recognition scope 5 has a cylindrical shape extending in the axial direction, and has a diameter from the outer peripheral surface in the vicinity of the eyepiece window 6 a of the scope main body 6. A first mirror (cylinder entrance mirror) 7 extending in the direction and formed in an annular shape is provided. Note that a rectangular tube shape may be used instead of the cylindrical shape. The annular reflecting surface 8a of the first mirror 7 directly reflects the peripheral area 22. Also, the red red translucent plate 9 attached to the daylighting window 6b can distinguish the light coming from the daylighting window 6b from the normal light by its red color. , The red circle 20 by the red translucent plate 9 displaying the light incident state into the daylighting window 6b overlapping the light incident on the central region 21 can be seen.

  In this example, since the reflecting surface 7a of the first mirror 7 faces obliquely downward, the peripheral area 22 in the detection area E is reflected, but the daylighting window 6b faces obliquely upward. Is from the direction C above the door, and the detection area E does not overlap the central area 21 that can be seen through the daylighting window 6b. Therefore, only the peripheral area 22 in the detection area E is visible, and the central area 21 is not visible.

  Hereinafter, the operation of recognizing the detection area E using the area recognition scope 5 will be described. First, as shown in FIG. 4A, the eye angle window 6a of the area recognition scope 5 is looked into, and the depth angle adjusting screw 12 of FIG. Adjust to 1). At this time, as shown in FIG. 4B, since a red circle 20 is seen by the light incident display body (red translucent plate) 9 that displays the central region 21 in the daylighting window 6b, area recognition is performed at an arbitrary position of the detection area E. It is easy to match the viewing direction of the scope 5. Although the central region 21 at an arbitrary position of the detection area E cannot be seen, the peripheral region 22 that can be easily compared with the red circle 20 is seen wide by the first mirror (cylinder entrance mirror) 7. The angle can be adjusted, and it is easy to understand which place in the detection area E is being viewed, and an arbitrary position in the detection area E can be easily recognized.

  In contrast, as shown in FIG. 5 (A), unlike FIG. 4 (A) in the present invention, the first mirror (cylinder entrance mirror) 7 and the red translucent plate 9 are provided only by the reflecting mirror 8. If not, as shown in FIG. 5B, only the inside (center area) 21 corresponding to the field of view in the cylinder of the area recognition scope is visible, and the peripheral area is not visible. It becomes difficult to understand which place you are looking at.

  Thus, in the first embodiment, the first mirror 7 is adjusted by adjusting the viewing angle of the area recognition scope 5 with respect to an arbitrary position of the detection area E when looking closely at the eyepiece window 6a. Since the peripheral region 22 is projected so as to be comparable with the central region 21 displayed by the light incident display body 9, it is easy to match the field of view of the area recognition scope 5 to an arbitrary position of the detection area E, and the light incident display body 9. It becomes easy to compare the center area 21 displayed by the above and the peripheral area 22, and even if the central area 21 at an arbitrary position of the detection area E is not visible, the peripheral area 22 can be seen widely. It becomes easy to recognize whether the user is viewing, and an arbitrary position in the detection area E can be easily recognized. Further, if the mounting height of the optical sensor 1 from the floor surface is high, the amount of movement of the floor surface area at a certain angle when the detection area E is varied increases, and fine adjustment is required. Is easy and does not require adjustment work at high places.

  FIG. 6 is a bottom view showing an area recognition scope for an optical sensor according to a second embodiment of the present invention, and FIG. 7 is a schematic side view thereof. The area recognition scope 5A of the second embodiment has a second mirror (reflection mirror) 8 in addition to the first mirror (cylinder entrance mirror) 7, and has a substantially inverted V-shaped cylindrical shape in a side view, for example. It differs from the cylindrical area recognition scope 5 extending in the axial direction in the first embodiment. Other configurations are the same as those of the first embodiment.

  As shown in FIG. 7, the scope main body 6 of the area recognition scope 5A includes an eyepiece window 6a and a daylighting window 6b, and a first mirror (cylinder entrance mirror) disposed on the optical axis and in the vicinity of the eyepiece window 6a. ) 7, a second mirror (reflection mirror) 8 disposed between the daylighting window 6b and the eyepiece window 6a, and a light incident display body (colored translucent plate) 9 disposed in the vicinity of the daylighting window 6b. Yes. In addition, you may arrange | position the light-incidence display body 9 between the lighting window 6b and the 2nd mirror 8. FIG.

  When looking closely at the eyepiece window 5a, the second mirror 8 projects the central region 21 (FIG. 8B) that can be seen through the daylighting window 5b, and the first mirror 7 is located outside the central region 21. The peripheral area 22 (FIG. 8B) is projected, and the light incident display body 9 displays the light incident state in the daylighting window 2b so as to be visible through the light incident on the central area.

  In order to recognize the detection area E of the optical sensor 1, when an arbitrary spot position E1 in the detection area E is selected (FIG. 1) and the eye is looked close to the eyepiece window 6a, Then, by adjusting the angle of the angle adjusting screws 11 and 12 in FIG. 6, the field angle of the area recognition scope 5A in FIG. 7 is adjusted, and the second mirror 8 is detected in accordance with the central region 21 visible through the daylighting window 6b. The arbitrary spot position E1 of the area E and the light incident display body 9 are displayed in an overlapping manner, and the first mirror 7 is compared with the arbitrary spot position E1 of the overlapped detection area E and the central area 21 displayed by the light incident display body 9. The peripheral area 22 is projected as possible.

  As shown in FIG. 7, in this example, the cylindrical scope main body 6 constituting the area recognition scope 5A has a substantially inverted V shape in a side view having a bent portion 6c, and an outer periphery in the vicinity of the eyepiece window 6a. A first mirror (cylinder entrance mirror) 7 that extends in the radial direction from the surface and is formed in an annular shape, and a second mirror (reflection mirror) 8 that is provided in the bent portion 6 c in the scope main body 6 are provided. ing. The reflecting surface 7a of the first mirror 7 and the reflecting surface 8a of the second mirror 8 are both arranged obliquely downward and parallel to each other, and the annular reflecting surface 7a of the first mirror 7 defines the peripheral region 22. Project directly. Further, the red translucent plate 9 attached to the daylighting window 6b can distinguish light entering from the daylighting window 6b from normal light by its red color. In addition, the incident light of the central region 21 appears to be transmitted, and the red circle 20 by the red translucent plate 9 displaying the incident light state into the daylighting window 6b is visible.

  Hereinafter, an operation of recognizing the detection area E using the area recognition scope 5A will be described. A target T such as a flat disk serving as a mark is placed at an arbitrary spot position E1 (for example, the first row) in the detection area E in FIG. 1, and the spot position E1 in the first row is visually recognized. First, as shown in FIG. 8 (A), the eyepiece window 6a of the area recognition scope 5A is looked into, and the depth angle adjusting screw 12 of FIG. At this time, as shown in FIG. 8B, the target T is matched with the second mirror (reflecting mirror) 8 in the central region 21 that can be seen through the daylighting window 6b, and the target T and the light-incident display (red half) The angle is adjusted while looking at the peripheral region 22 of the red circle 20 with the first mirror (cylinder entrance mirror) 7 so that the red circle 20 seen by the transparent plate 9 can be seen. Since the target T, the red circle 20, and the peripheral region 22 that coincide with the center region 21 can be seen simultaneously by the angle-recognized area recognition scope 5A, the spot position E1 in the first row of the detection area E can be easily recognized. Can do.

  In this case, the light incident display body (red translucent plate) 9 makes it easy to align the field of view of the area recognition scope 5A with the arbitrary spot position E1 of the detection area E, and the first mirror (cylinder entrance mirror) 7 Since the projected peripheral area 22 appears to be wide enough to be compared with the arbitrary spot position E1 of the overlapped detection area E and the center area 21 of the detection area E displayed by the red circle 20, it can be seen where in the detection area E It is easy to understand whether or not the arbitrary spot position E1 in the detection area E is easily recognized.

  Further, as shown in FIG. 7, the area recognition scope 5A has a substantially inverted V shape, so that the optical sensor 1 can be viewed from the eyepiece window 6a with the line of sight upward and the detection area E below. Even if it is attached near the ceiling in the upper part C, it is easy to look into the eyepiece window 6a of the area recognition scope 5A, so that the detection area E can be easily recognized. Furthermore, by increasing the cylinder length of the area recognition scope 5A, it is possible to improve the positional accuracy in the optical axis and viewing direction. In addition, since the brightness of the incident light of the eyepiece window 6a and the daylighting window 6b is substantially the same, and the brightness and darkness of the images seen by the first mirror 7 and the second mirror 8 are substantially the same, the peripheral region 22 becomes easier to see.

  As described above, in the second embodiment, the second mirror is adjusted by adjusting the viewing angle of the area recognition scope 5A with respect to the arbitrary spot position E1 of the detection area E when looking closely at the eyepiece window 6a. 8 overlaps the arbitrary spot position E1 of the detection area E matched with the central area 21 visible through the daylighting window 6b and the incident light display body 9, and the first mirror 7 is the arbitrary spot of the overlapped detection area E. Since the peripheral area 22 of the position E1 and the center area 21 displayed by the light incident display body 9 is displayed in a contrastable manner, it is easy to match the visual field of the area recognition scope 5A to the arbitrary spot position E1 of the detection area E. The center area 21 at the arbitrary spot position E1 in the detection area E can be easily compared with the peripheral area 22, and the peripheral area 22 at the spot position E1 can be viewed widely. Because that makes it easier to recognize or are looking at the location of the detection area E throat, it can easily recognize the spot position E1 of the detection area E.

  In addition, in the said 2nd Embodiment, although the scope main-body part 6 is a substantially reverse V-shaped shape by the side view which has the bending part 6c, it is a substantially reverse U shape and substantially reverse L by the side view which has the bending part 6c. A shape such as a letter may be used.

  In each of the above embodiments, the area recognition scope is used for recognizing the arbitrary spot position of the detection area E divided into a plurality of areas, but the arbitrary spot position of the single detection area E is recognized instead of the plurality. May be used for

It is a schematic perspective view which shows the detection area of the automatic door sensor which is an optical sensor. It is a bottom view which shows the area recognition scope for optical sensors which concerns on 1st Embodiment of this invention. FIG. 3 is a partially cutaway schematic side view showing the optical sensor area recognition scope of FIG. 2. (A) is a side view showing the area recognition scope of FIG. 3, and (B) is a view seen when looking through the eyepiece window. (A) is a side view showing an area recognition scope different from the present invention, and (B) is a view seen when looking through an eyepiece window. It is a bottom view which shows the area recognition scope for optical sensors which concerns on 2nd Embodiment. FIG. 7 is a partially cutaway schematic side view showing the optical sensor area recognition scope of FIG. 6. (A) is a side view showing the area recognition scope of FIG. 7, and (B) is a view seen when looking through the eyepiece window.

Explanation of symbols

1: Optical sensor (automatic door sensor)
3: Optical unit 5, 5A: Area recognition scope 6: Scope body 6a: Eyepiece window 6b: Daylighting window 6c: Bending part 7: First mirror (cylinder entrance mirror)
8: Second mirror (reflection mirror)
9: Light incident indicator (red translucent plate)
10: Optical body 11: Left / right angle adjustment screw 12: Depth angle adjustment screw 21: Center region projected by the second mirror 22: Peripheral region projected by the first mirror E: Detection area E1: Arbitrary spot position of the detection area

Claims (4)

A cylindrical scope main body that is attached to a projector or a light receiver that constitutes an optical sensor and that can adjust a viewing angle in conjunction with an optical body that forms a detection area of the optical sensor. An optical sensor area recognition scope used for recognizing a detection area of
The scope main body includes an eyepiece window, a daylighting window, a first mirror disposed on the optical axis and in the vicinity of the eyepiece window, and a light incident display body disposed in the vicinity of the daylighting window,
When the eye is viewed close to the eyepiece window, the first mirror projects a peripheral area outside the central area that can be seen through the daylighting window, and the incident light display body can transmit light incident on the central area. The light incident state into the daylighting window is displayed so as to be visible, and the viewing angle of the area recognition scope is adjusted with respect to an arbitrary position of the detection area, and the first mirror is the light incident display body. An optical sensor area recognition scope that reflects the peripheral area of the image so that it can be compared with the center area displayed by the camera. A cylindrical scope main body that is attached to a projector or a light receiver that constitutes an optical sensor and that can adjust a viewing angle in conjunction with an optical body that forms a detection area of the optical sensor. An optical sensor area recognition scope used for recognizing a detection area of
The scope main body includes an eyepiece window, a daylighting window, a first mirror disposed on the optical axis and in the vicinity of the eyepiece window, and a second mirror disposed between the daylighting window and the eyepiece window. A mirror, and a light incident display body disposed in the vicinity of the daylighting window,
When the eye is viewed close to the eyepiece window, the second mirror projects a central region that can be seen through the daylighting window, and the first mirror projects a peripheral region outside the central region, and displays the incident light. The body is capable of transmitting the light incident on the central area and displaying the light incident state in the daylighting window so as to be visible. Further, the viewing angle of the area recognition scope is adjusted with respect to an arbitrary spot position of the detection area. Then, the second mirror projects the arbitrary spot position of the detection area matched with the central area and the incident light display body, and the first mirror displays the arbitrary spot position of the superimposed detection area. And an optical sensor area recognition scope that reflects the peripheral area of the light incident display body so that the peripheral area can be compared. In claim 2,
A detection area is formed below the optical sensor,
The scope main body has a substantially inverted V shape in a side view with a bent portion, and the first main mirror reflecting surface is formed in an annular shape extending radially from an outer peripheral surface in the vicinity of the eyepiece window of the scope main body. And an area recognition scope for an optical sensor, wherein a reflecting surface of the second mirror provided in a bent portion in the scope main body is disposed in parallel to each other. In any one of Claim 1 to 3,
The light incident display body is made of a colored translucent plate, and when the eye is viewed close to the eyepiece window, the light incident state from the central region into the daylighting window can be visually recognized by the color of the colored translucent plate. Display area recognition scope for optical sensor.

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