JP2010276569A - Underwater laser marker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underwater laser marker capable of emitting laser beams omnidirectionally in 360 degrees under water considering underwater use. <P>SOLUTION: The laser marker in watertight structure includes: a laser module (1) including an irradiation section (11) for emitting laser beams for base line irradiation to the periphery by a prism corn; and a body (2) in watertight structure and in rectangular parallelepiped for storing the laser module (1). In the laser marker, the irradiation section (11) of the three laser modules (1) is mounted to each of three adjacent surfaces projecting from the body (2), the irradiation section (11) of each projecting laser module (1) is stored in a pressure-resistant cylindrical cover module (3) for transmitting laser beams, and the cylindrical cover module (3) is mounted to the body (2) while being offset to the outside to maintain watertight structure. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an underwater laser marking device, and more particularly to an underwater laser marking device capable of irradiating laser light in all directions of 360 ° in water for use in surveying and the like in water.

  As a laser marking device capable of irradiating laser light in all directions of 360 ° on the ground, those described in Patent Document 1 and Patent Document 2 are known.

  Here, Patent Document 1 (Japanese Patent Application Laid-Open No. 2002-195831) discloses a laser that is installed on a floor surface in a construction site or the like and forms a summing line by irradiating the floor surface, ceiling surface, or wall surface with laser light. An inking device, which is provided on the inking device main body and irradiates a laser beam in all directions of 360 °, and is arranged so as to protrude from the case body housing the inking device main body. A laser marking device is described in which a covering member is attached to the case body, an opening is formed in the peripheral surface of the covering member in parallel with the irradiation direction of the laser beam, and the laser beam is irradiated through the opening. However, this concept is in the air, and the cover glass becomes thicker to counteract the water pressure, resulting in large refraction. Furthermore, since the laser light transmitted through the cover glass is irradiated into water having a large refractive index and a deviation due to refraction is amplified, a highly accurate cover and mounting accuracy are required.

  Further, in Patent Document 2 (Japanese Patent Laid-Open No. 2006-47048), a light source, a collimating lens that converts divergent light from the light source into a parallel light beam, and a parallel light beam from the collimating lens are incident from a direction orthogonal to the central axis. Thus, three line light generation units having rod lenses that diffuse and emit only in a direction orthogonal to the central axis are used, and a common plane including the line light emitted from each line light generation unit is used. It is arranged at equal intervals in the circumferential direction in one plane so that both ends of line light emitted from adjacent line light generation units overlap each other so as to be a plane, and irradiate the line light over the entire circumference An all-around irradiation type inking device characterized in that it is configured is described, but a thick cover glass is provided for the device to resist water pressure. If employed, it is necessary to very precisely fabricated center of the light source, application in water is very difficult for the reasons described above.

  These laser marking devices are used on the ground, and are considered to be used in water where the accuracy of the laser beam and outer shell is required to penetrate water, which is a medium with high pressure resistance and refractive index due to water pressure. There is no known laser marking device.

  Therefore, conventionally, when measuring the position and shape of water channels, structures, and arbitrary spaces in water, plane or three-dimensional position measurement is performed from any or known point by trigonometry, etc. The reference line has been performed by writing directly on the structure or by connecting the points obtained by measurement with a water thread or the like to provide a reference line in the space.

  At that time, naturally, when there are many measurements from space, it is necessary to set up a reference line only for the points required for measurement. It was necessary to spend a lot of time and effort on the line installation.

  In general, the horizontal / vertical projection in water is performed by using a leveler equipped with a bubble tube (depending on the device capable of vertical display) or by using a downward swing.

  Here, in the case of a leveling device, it is difficult to directly display a space of several meters with a commercially available leveling device, and in the case of a downward swing, the water is discharged into the surrounding water by the diver's exhaust or the diver's movement. In order to measure in a state where the movement is generated and the swing is swung down, and the swing is completely stopped, it is rare to use a closed-circular diving device in the state where there is no surrounding flow (which is basically not a natural condition). There was no choice but to use the equipment.

  Therefore, it is very difficult to measure the size and distance of structures in water.

  On the other hand, in order to use the laser marking device used on the ground underwater, the entire laser marking device must be housed in a waterproof unit that combines, for example, a pressure-resistant dome-shaped transparent cover that transmits laser and a base. Can be considered.

  However, when the entire laser marking device is placed in a dome-shaped transparent cover, the laser emitted from the light source passes through the air portion existing between the laser module and the dome-shaped transparent cover, and then the dome-shaped transparent cover. Since it passes through the dome portion of the cover and further advances in the underwater portion, it is difficult to keep the laser irradiation angle horizontal or vertical over the entire circumference, and it cannot be used as a summing device.

  In view of the use in water, an underwater laser marking device that can irradiate laser light in all directions at 360 ° in water has been demanded.

  The inventor of the present application has conducted intensive research in order to solve the above problems.

  As a result, by making the cover module as a pressure-resistant pressure vessel cylindrical, the light source and the emitted laser light, and the adjustment of the incident angle of the pressure vessel can be slightly adjusted from the center of the cylindrical pressure vessel in the circular direction. It was noted that the effect would not change if the laser beam and the cylindrical pressure vessel were at right angles even if they were shifted.

  In addition, by using an irradiation laser unit and a cylindrical transmission pressure vessel in the entire circumferential direction, the irradiation direction is the same as the direction of passing through the pressure vessel and diffusing, suppressing energy loss due to diffusion, We focused on the fact that stable and highly accurate laser irradiation is possible.

  And this inventor came to complete this invention.

  That is, the means for solving the problems in the present invention are as follows.

First,
A laser module having an irradiation unit for irradiating a laser beam for reference line irradiation to the periphery by a prism cone;
A water-tight structure of a laser marking device comprising a water-tight structure of the laser module;
Attach the irradiation part of the laser module to protrude from the main body,
The projecting part of the protruding laser module is placed in a pressure-resistant cylindrical cover module that transmits the laser,
An underwater laser marking device, wherein the cylindrical cover module is attached to a main body so as to maintain a watertight structure.
The prism cone used here is preferably a concave prism cone in consideration of enabling 360 ° reference line irradiation with one light source.
Second,
The underwater laser marking device according to the first aspect, wherein the main body is a rectangular parallelepiped.
Third,
The underwater laser marking device according to the second aspect, wherein the laser modules are respectively attached to three adjacent surfaces.
Fourth,
4. The underwater laser marking device according to the third aspect, wherein the laser module is attached with an offset.
Here, by offsetting from the main body to the outside, the laser intersects but the main body does not block the laser.

  According to the present invention, the irradiation part of the laser module protrudes from the main body and is attached, and the irradiation part of the protruding laser module is housed in a pressure-resistant cylindrical cover module that transmits the laser, thereby irradiating the laser from the light source. After passing through the air part existing between the laser module and the cylindrical cover module, it passes horizontally across the cylindrical part of the cylindrical cover module and further proceeds through the underwater part. The laser irradiation angle can be kept horizontal or vertical over the entire circumference, and can be used as a summing device.

It is a front view of the underwater laser marking device concerning the present invention. It is a left view of the underwater laser marking device which concerns on this invention. It is a front view of the lid of the underwater laser marking device according to the present invention. It is a figure which shows the cylindrical cover module which accommodated the laser module of the underwater laser marking device which concerns on this invention, (a) shows a front view, (b) shows a bottom view.

  An underwater laser marking device according to the present invention includes a laser module 1 having an irradiation section 11 that irradiates a laser for reference line irradiation to the surroundings by a prism cone, and a main body 2 having a rectangular parallelepiped having a watertight structure for housing the laser module 1. It has.

  In the present embodiment, three laser modules 1 are used, and as shown in FIG. 1, they are attached to the three surfaces adjacent to each other on the front, right side, and upper surface, with each offset from the main body 2 toward the outside. .

  Here, the irradiation unit 11 of each laser module 1 is attached so as to protrude from the main body 2.

  When each laser module 1 is mounted, the irradiation direction is adjusted using jack bolts (not shown).

  The projecting portion 11 of the projecting laser module 1 is housed in a pressure-resistant cylindrical cover module 3 that transmits the laser.

  The cylindrical cover module 3 is attached to the main body 2 using an O-ring 31 so as to maintain a watertight structure.

  In the main body 2, a lid 21 is provided on the left side in FIG. 1 with a watertight O-ring 22 interposed between the bolt hole 2a and the bolt hole 21a with a groove so that the capacity compression is 30%. It is attached by tightening.

  As shown in FIG. 4, the cylindrical cover module 3 is a combination of a circular upper plate 32, a cylindrical body 33, and a base 34 having a receiving portion on the lower end side of the body 33. The base 34 is provided with a bolt hole 34 a for attachment to the main body 2.

  The underwater laser marking device according to the present invention is a bolt for tightening although the illustration of the adjustment of the irradiation angle of the laser module 1 is omitted when the laser module 1 and the cylindrical cover module 3 are attached to the main body 2. In addition, it is performed by using a jack bolt etc.

  And although illustration is abbreviate | omitted, a watertight structure is hold | maintained by the O-ring 22 by tightening the lid | cover 21 with a volt | bolt in the state which stored the power supply unit etc. to the laser module 1 in the main body 2. FIG.

  In FIG. 1, reference numeral 35 denotes a semicircular divided base for attaching the cylindrical cover module 3 to the main body 2.

  In FIG. 1, reference numeral 2b denotes a protective bolt mounting hole for mounting a protective bolt (not shown) for preventing damage to the cylindrical cover module 3 mounted on each surface.

  Furthermore, 2c in FIG. 2 shows support leg attachment holes, such as a tripod.

  The following effects can be expected by using the underwater laser marking device according to the present invention.

  By irradiating laser light from any point in the vertical, horizontal and right-angle directions, the reference line in the same direction is instantly displayed on the surrounding structures, and measurement from the reference line to any point is easy. It becomes.

  That is, by using the underwater laser marking device according to the present invention, a reference line (arbitrary reference line: right angle, horizontal, vertical) for measuring the position and shape of a water channel or a structure in water can be obtained. Projected and displayed on a wall, etc., and the reference line can be confirmed in the space, and the size and distance of the structure can be easily measured with high accuracy.

  In addition, the laser inking device for underwater according to the present invention intersects the laser light in three directions, so that the intersecting point becomes a line and can be used as a flat reference line, and also in a cross section Since the same use is possible, it can be used as a highly accurate optical lowering swing that is not easily affected by the surroundings such as the flow of water in water.

  Furthermore, when the underwater laser marking device according to the present invention is used, the reproducibility of measurement points in repeated measurement is improved because the installation standard is clear.

  In addition, the use of the underwater laser marking device according to the present invention facilitates the setting of the reference line in the space, which has been difficult in the past, so that a larger number of points can be obtained within the same time period as in the past. Measurement is possible.

  In addition, it is possible to set a reference line with high accuracy due to the straightness that is a characteristic of laser light, and the measurement accuracy is greatly improved. By using laser light as the reference line, Can be easily measured.

  Furthermore, by using a straight traveling property of the laser light and providing a filter in the irradiating portion, it is possible to easily and instantaneously display points arbitrarily divided in the radiation direction.

DESCRIPTION OF SYMBOLS 1 Laser module 11 Irradiation part 2 Main body 2a Bolt hole 2b Protection bolt mounting hole 2c Support leg mounting hole 21 Lid 21a Bolt hole 22 O-ring 3 Cylindrical cover module 31 O-ring 32 Top plate 33 Body 34 Base 34a Bolt hole 35 Half Circular split base

JP 2002-195831 A JP 2006-47048 A

Claims (4)

A laser module having an irradiation unit for irradiating a laser beam for reference line irradiation to the periphery by a prism cone;
A water-tight structure of a laser marking device comprising a water-tight structure of the laser module;
Attach the irradiation part of the laser module to protrude from the main body,
The projecting part of the protruding laser module is placed in a pressure-resistant cylindrical cover module that transmits the laser,
An underwater laser marking device, wherein the cylindrical cover module is attached to a main body so as to maintain a watertight structure.   The underwater laser marking device according to claim 1, wherein the main body is a rectangular parallelepiped.   The underwater laser marking device according to claim 2, wherein the laser module is attached to each of three adjacent surfaces.   The underwater laser marking device according to claim 3, wherein the laser module is mounted with an offset.

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