JP2017102017A - Laser collimator for survey - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser collimator for survey capable of reducing the eye fatigue of a survey worker.SOLUTION: In a laser collimator for survey (1) including a laser light source (3) and a housing (7) including a light passing window (5) which covers the laser light source (3) and through which a laser light beam (B) emitted from the laser light source (3) passes, the wavelength of the laser light beam (B) emitted from the laser light source (3) is set within a range of 500 to 570nm. The housing (7) may include a support mechanism (13) to which a telescope (9) for visually recognizing the laser light beam with which an irradiation object is irradiated and a reflector for confirming the position of the laser collimator (1) from the outside can be interchangeably attached.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an optical sighting device using a laser used for surveying.

  In general, in a surveying work, an optical sighting device is used to accurately set a reference line for surveying (for example, see Patent Document 1). Moreover, what uses a laser beam as a light source of such an sighting device is used. Since the laser beam is excellent in directivity, it can be used for surveying over a long distance (several hundred meters).

JP 2010-071683 A

  In such a laser sighting device, a red laser (for example, a wavelength of about 635 nm) is generally used in consideration of visibility from a distance. However, when the laser sighting device is used for surveying work in a dark environment, for example, when used in a tunnel, the red laser is too irritating to the eyes. Tend to feel fatigue.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a surveying laser sighting device capable of reducing the eyestrain of a surveying operator in order to solve the above-mentioned problems.

  In order to achieve the above object, a surveying laser sighting device according to the present invention includes a laser light source and a housing that covers the laser light source and has a light transmission window that allows the laser beam emitted from the laser light source to pass therethrough. And the wavelength of the laser beam emitted from the laser light source is in the range of 500 to 570 nm.

  According to this configuration, since a laser beam having a wavelength of 500 to 570 nm, which is generally green, is used, even if the surveying operator works for a long time, it is difficult to feel eye fatigue. Therefore, it is possible to efficiently perform surveying work in a dark environment such as in a tunnel.

  In one embodiment of the present invention, a telescope for visually recognizing the laser beam irradiated on the irradiation target and a reflector for confirming the position of the laser sighting device from the outside are interchangeably provided on the housing. It is preferable that an attachable support mechanism is provided. According to this configuration, after viewing and adjusting the irradiation state of the laser beam with the telescope, the telescope can be removed from the support mechanism and replaced with a reflector, so that the laser sighting device can be used for surveying work using the total station. It becomes possible. Thereby, surveying with high accuracy becomes possible.

  According to the laser sighting device of the present invention, even if a surveying operator works for a long time, it is difficult to feel eye fatigue and has excellent visibility. Therefore, the surveying operation in a dark environment such as in a tunnel is efficient. Can be done.

1 is a perspective view showing a surveying laser sighting device according to a first embodiment of the present invention. It is a partially broken side view which shows the laser sighting instrument for surveying of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a surveying laser sighting device (hereinafter simply referred to as “laser sighting device”) 1 according to an embodiment of the present invention. The laser sighting device 1 is used for a surveying operation such as leveling, and a surveying operator sets a surveying reference line using the laser sighting device 1.

  As shown in FIG. 2, the laser sighting device 1 includes a laser light source 3 and a casing 7 that covers the laser light source 3 and has a light transmission window 5 that allows the laser beam B emitted from the laser light source 3 to pass therethrough. Yes. In the state shown in the drawing, the laser sighting device 1 further includes a telescope 9 that is detachably fixed to the housing 7 and is a visual recognition device for visually recognizing the laser beam B irradiated to the irradiation target of the laser beam B. ing. In the following description, the side on which the laser beam B is emitted in the longitudinal direction of the laser sighting device 1 is called “front side”, and the opposite side is called “rear side”.

  The laser light source 3 is fixed in the housing 7 via a connecting member such as a spacer and a screw body (not shown). In the illustrated example, the light transmission window 5 is a circular opening formed in the front surface of the housing 7. The light transmission window 5 may have any shape and size as long as the laser beam B from the laser light source 3 can pass therethrough. A lens 11 for adjusting the spread of the laser beam B is disposed behind the light transmission window 5. The lens 11 is provided such that its front-rear position can be adjusted by a diaphragm mechanism (not shown). The light transmission window 5 may be provided with a plate material made of, for example, glass or plastic that transmits the laser beam B.

  A support mechanism 13 is provided on the upper surface 7a of the substantially rectangular parallelepiped housing 7 for supporting the telescope 9 and a reflector described later on the housing 7 interchangeably. The telescope 9 is detachably attached to the support mechanism 13. Behind the support mechanism 13 on the upper surface of the housing 7, a bubble tube 15 that is a horizontal rod is attached. The entire laser sighting device 1 is used, for example, in a state of being attached to a support base 17 capable of adjusting a horizontal direction angle and an inclination angle.

  The wavelength of the laser beam B emitted from the laser light source 3 of the present embodiment is in the range of 500 to 570 nm. That is, the laser light source 3 in the present embodiment is a laser light source 3 that emits a green laser. More specifically, the laser light source 3 of the present embodiment emits a laser beam B having a wavelength of 532 nm.

  In the present embodiment, a laser diode is used as the laser light source 3, but a light source other than the laser diode, such as a helium tube laser or a gas tube laser, can be used as long as it can irradiate a laser beam having a wavelength of 500 to 570 nm. Etc. may be used.

  In the illustrated example, power is supplied to the laser light source 3 from an external AC power source via the power supply line 19. However, the mode of power supply to the laser light source 3 is not limited to this example. For example, a DC power source such as an external secondary battery or a part of the laser sight 1 is provided (for example, the outer surface of the housing 7). Alternatively, power may be supplied to the laser light source 3 from a DC power source such as a secondary battery (fixed inside).

  In the present embodiment, a reflector (for example, a prism) that reflects light for confirming the position of the laser sighting device 1 from the outside is provided on the support mechanism 13 provided on the upper surface 17a of the housing 7. Attached interchangeably with the telescope 9. With such a configuration, after viewing and adjusting the irradiation state of the laser beam B with the telescope 9, the telescope 9 can be removed from the support mechanism 13 and replaced with a reflector such as a prism. A laser sight can be used.

  As described above, according to the surveying laser sighting device 1 according to the present embodiment, since the laser beam B having a wavelength of 500 to 570 nm, which is generally green, is used, even if the surveying operator works for a long time, It is hard to feel eye fatigue. Therefore, for example, surveying work in a dark environment such as in a tunnel can be efficiently performed.

  As described above, the preferred embodiments of the present invention have been described with reference to the drawings, but various additions, modifications, or deletions can be made without departing from the spirit of the present invention. Therefore, such a thing is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Laser sighting device 3 for surveying Laser light source 5 Light transmission window 7 Case 9 Telescope 13 Support mechanism B Laser beam

Claims (2)

A laser light source;
A housing that covers the laser light source and has a light transmission window through which the laser beam emitted from the laser light source passes;
With
The wavelength of the laser beam emitted from the laser light source is in the range of 500 to 570 nm.
Laser sighting for surveying.   2. The surveying laser sighting device according to claim 1, wherein a telescope for visually recognizing the laser beam irradiated on the irradiation target and a reflector for confirming the position of the laser sighting device from outside Surveying laser sighting device provided with a support mechanism that can be mounted interchangeably.

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