JPH02132320A - Multidirectional reference beam radiator - Google Patents

Abstract

PURPOSE:To obtain the reference beam radiator by providing the number of translucent reflecting surfaces which is obtained by subtracting '1' from the number of radiation directions on a radiation beam. CONSTITUTION:A reference beam radiated by a unit 3 indicates the irradiation of a perpendicular base point O. Half-mirrors 1a-1d reflect part of the light in four directions in order and the light beams are reflected totally by reflecting mirrors 2a-2d. The prolongations of the respective reference beams cross one another at one point O'. When points that the respective reference beams indicate irradiation for a marked, points (a)-(d) between the four directions are set as the point O as the base point. Further, when the reference beams which travel to the points (a)-(d) are set horizontally, high points a'-d' which are as many as the points (a)-(d) are determined simultaneously with the points (a)-(d). Even when the reference beams are set horizontally, the purpose is attained by the same principle with the same constitution. This constitution makes measurement at right angles and the horizontal possible by one kind of machine and a small number of operations in the case of building construction, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a reference beam emitting device used as a reference in construction surveying and the like.

Conventional techniques and problems Traditionally, when surveying construction sites such as buildings, two types of surveying equipment had to be used: a transisotometer was used to find right angles, and a level was used to find the level. In addition, with all of these surveying instruments, a telescope must be used to aim in one direction at a time, and another worker must follow the instructions to set up a new point, so at least two workers are required. And so.

Therefore, the present invention provides a new surveying machine that makes it possible to perform right angle setting and horizontal setting with a single type of machine, and also makes it possible to operate conventional surveying machines to perform sighting and direction. Specifically, on the beam emitted from the light source unit, a number of semi-transparent reflective surfaces is provided, the number of which is one less than the number of radiation directions, so that the beam is emitted in multiple directions. It is an object of the present invention to provide a multi-directional reference beam radiating device characterized by the following configuration.

FIG. 1 shows the principle of an optical path diagram of an embodiment of the present invention device which radiates a reference beam in five directions. 3 is a light source unit, and the reference beam radiated from the unit 3 is Irradiation instruction is given to base point 0 in the vertical direction. la,Ib
, IC and Id4! 2a, 2b, 2c are semi-transparent mirrors that sequentially reflect part of the light from the light source unit 3 in four directions.
and 2d are reflecting mirrors that totally reflect the light from the semi-transparent mirrors 1a, 1b, 1c and 1d, respectively. In this example,
The extension lines of each reference beam are set to intersect at one point O゛, and if you mark the points that each reference beam directs to irradiate, you will be able to determine points a, "b, c," in four directions with the 0 point as the base point.
d can be determined as a new point, and points a and b
．． ．． If the reference beams directed toward c and d are set horizontally, the points a, b, c, and d are determined simultaneously, and the same high point a'
, b', cd' can be determined. In the illustrated embodiment, the direction of the reference beam emitted from the light source unit 3 is set vertically, but even if it is set horizontally, the same purpose can be achieved using the same principle and configuration. Furthermore, the number and direction of the reference beams can be determined as appropriate depending on the purpose of use of the device, and the illuminance of each reference beam can also be determined as appropriate depending on the purpose of use of the device.

Embodiment 1 The apparatus of the present invention will be described in detail with reference to the embodiments shown below. FIG. 2 shows an embodiment based on the principle of emitting a reference beam in the five directions of FIG. is a light source consisting of a semiconductor laser, etc., and the light from the light source 5 is transmitted through a radiation lens system 6.
The beam is radiated vertically downward as parallel light. The beam heading vertically downward toward point O is configured to be always maintained vertically by compensating the inclination caused by the inclination of the device main body 4 by a conventionally known compensator 7. As explained in the previous function section, 1a, 1b, IC, and 1d are semitransparent mirrors that sequentially reflect part of the light from the light source unit 3 in 40,000 directions, and 2a, 2b, 2C, and 2d are the semitransparent mirrors, respectively. Semi-transparent mirror 1a, 1
b, a reflecting mirror that totally reflects the light from IC and 1d. In addition, in FIG. 2, since the reflection directions of the semi-transparent mirrors 1b and 1d are perpendicular to the paper surface, the light rays and the reflecting mirrors 2b and 2
d is omitted.

In the case of this embodiment, as explained in the previous operation section, the extension lines of each reference beam are set to intersect at one point O'', and each reference beam is set to have 40,000 horizontal lines at 90° angular intervals. Since the irradiation is made in the direction, the points in the four directions that should be determined are a % b % C using the O point in Fig. 1 as the base point.
, d, as well as the mutually horizontal identical high points a, b', c', and d' in FIG.

Since the vertical reference beam from the light source unit 3 is always kept vertical by the compensator 7, the reference beam branched by at least two reflecting surfaces of the semi-transparent mirror and the reflecting mirror is also independent of the inclination of the main body 4 of the device. It will be kept horizontal.

FIG. 3 shows a case where the light from the light source unit 3 is split by an even number of reflective surfaces. In this case, if the beam V from the light source unit 3 is always kept vertical, the reflective surface will have an inclination α. This shows that the beam reflected by the two reflecting surfaces 1 and 2 and emitted is kept horizontal, and two more reflecting surfaces are added to the two reflecting surfaces, resulting in a beam splitting into four reflecting surfaces. This shows that the beam V' is kept horizontal in the same way even if the reflection surface is an even-numbered reflecting surface.

As shown in Fig. 4, when the light from the light source unit 3 is branched by an odd number of reflecting surfaces, even if the beam V from the light source unit 3 is always kept vertical, if the reflecting surface is tilted α, the reflection will be The beam ゜ reflected by the surface and emitted has an inclination 2α twice that of the beam ゜, and cannot be kept horizontal. Therefore, if there are an odd number of reflecting surfaces, such as three, this also indicates that the reflecting surfaces are not kept horizontal.

However, from the embodiment shown in FIG.
In the case where the main body of the device is properly aligned and used by relying on a bubble tube or the like, the number of reflecting surfaces for branching the light from the light source unit 3 may be an even number or an odd number. Needless to say, there is no problem at all.

Furthermore, in the embodiments shown in FIGS. 1 and 2, the light source unit 3
The light from the main body 4 is reflected only in the vertical direction an even number of times, and the branched reference beams are kept horizontal regardless of the inclination of the main body 4 of the device. In order to keep the light constant regardless of the inclination of the main body 4, it is necessary to reflect the light from the light source unit 3 an even number of times in the horizontal direction based on the same principle. ,2
For example, c and 2d may be roof-shaped reflective surfaces 2 as shown in FIG. 5 fal, fbl or FIG. 6 (a+, [bl).

Further, in the embodiments shown in FIGS. 1 and 2, the direction of the reference beam emitted from the light source unit 3 is set vertically, but the direction of the reference beam emitted from the light source unit 3 is set horizontally. Even if it is set to , the same purpose can be achieved using the same principle and configuration as above.

Furthermore, the number and direction of the reference beams can be determined as appropriate depending on the purpose of use of the apparatus, and the illuminance of each reference beam can also be determined as appropriate according to the purpose of use of the apparatus.

Here, if the light from the light source unit 3 is to be equally distributed to each reference beam, the reflectance Rm of each semi-transparent mirror may be determined as follows.

Rm= 1/ (n-m+ 1) However, m: order of semi-transparent mirrors from the light source unit n: number of reference beams For example, in the case of 5 directions in the example, R 1 = 1/ (5-1 + 1 ) -1/5, R
2=1/4, R3=1. /3, R4=1/2.

Effects As described above, according to the multi-directional reference beam radiating device according to the present invention, by providing a number of semi-transmissive reflective surfaces, the number of which is one less than the number of radiation directions, on the beam emitted from the light source unit, the beam can be emitted in multiple directions. Because it has a configuration that emits a beam,
Once the beam selected from among them is installed as a reference, the point that the other reference beam directs to irradiate can be marked and set as a new point without operating the equipment. It is not necessary and can save labor. In addition, by marking the point where the reference beam directs irradiation, it is possible to set the right angle and determine the same high point at the same time using the same device and the same operation, thereby shortening the working time and saving labor. Furthermore, each reference beam, excluding the beam emitted from the light source unit, is formed by an even number of reflecting surfaces, and the beam emitted from the light source unit is always kept vertical or horizontal by a compensator. For example, even if the main body of the apparatus is tilted, each reference beam is always kept vertical or horizontal.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the principle of the optical path of an embodiment of the device of the present invention, Fig. 2 is a schematic longitudinal sectional front view of the embodiment, and Fig. 3 explains the mode of operation of the main parts of the device of the present invention. Explanatory diagram, 4th
The figures are explanatory diagrams shown for comparison in order to explain the action of the device of the present invention, Figures 5+a) and (bl show the structure of another embodiment of the main part of the device of the present invention together with its function, and (al is a side view). figure,(
bl is a perspective view, and FIGS. Yes. la, Ib, lc, ld: Semi-transparent mirror 2a, 2b, 2c, 2d: Reflector 3: Light source unit 4: Device body 5: Light source 6: Radiation lens system q: Convensator

Claims (1)

[Claims] (1) The light source unit is characterized by a structure in which a number of semi-transmissive reflective surfaces is provided on the beam emitted from the light source unit, the number being one less than the number of radiation directions, and the beam is emitted in a plurality of directions. Multi-directional reference beam radiating device (2) In the device according to claim (1), the beam is reflected an even number of times in the vertical direction including the semi-transmissive reflection by the reflecting surface forming a pair with each semi-transmissive reflecting surface. (3) In the device according to claim (1) or (2), the beam is emitted by a reflecting surface that is paired with each semi-transmissive reflecting surface. A multi-directional reference beam radiating device (4) characterized in that the beam is reflected and radiated an even number of times in the horizontal direction including semi-transparent reflection. A multi-directional reference beam emitting device (5) according to claim (1), (2) or (3), characterized in that the direction of the beam emitted from the light source unit is vertical in the device described above. A multi-directional reference beam emitting device characterized in that the direction of the beam emitted from the light source unit is horizontal.