JPH0384410A - Reflection device provided with light rotating lamp for light wave system surveying equipment - Google Patents

Abstract

PURPOSE:To improve the accuracy of collimation by supporting a corner prism so that the position of an apparent apex may coincide with a measuring point and taking the intersection of the scattering line of the emitted light of an illuminating light source as the apparent apex so that the collimation may be easily and accurately performed. CONSTITUTION:The corner prism 2 is formed in a nearly triangular pyramid shape and a plane 21 where light is made incident, projected and transmitted is formed on a front surface and three reflection surfaces having the perpendicular apex 28 made by edge lines are formed on a side surface, so that the incident light is reflected in the same direction as an incident direction. The illuminating light source 42 is provided in the rear of the prism 2, which is supported so that the position of the apparent apex A which is collimated may coincide with a measuring point. Therefore, an error in measuring an angle caused by the error of the collimation is eliminated because the position of the apparent apex A coincides with the measuring point even when the prism 2 is inclined a little. Since the three edge lines scatters the luminous flux from the light source 42 to emit the light, the apparent apex A is easily and accurately collimated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a total station in which a light wave distance meter and a theodolite for measuring angles are combined into one, and the optical axes of both telescopes are aligned. Regarding the reflection device with a flashing light used in such light wave surveying machines, it is possible to measure angles by collimating the reflection device with a flashlight at night etc.
The present invention relates to a reflecting device that can measure distance by reflecting light incident on the reflecting device in the same direction as the incident direction.

[Prior art]

Conventionally, light wave distance meters used to measure distance emit light such as infrared modulated light, which is reflected by a reflection device installed at the measurement point, until the light is emitted and returned. The distance to the measurement point is determined by measuring the time. The reflecting device is equipped with a corner prism for reflecting light, and this prism is shaped like a cube with three edges cut to equal lengths around one corner, and the incident light beam is It has the property that it returns in the same direction as the direction of incidence. on the other hand,
In a total station that combines a light wave rangefinder and a theodolite into a single machine for simultaneous angle measurement, a collimating target plate for angle measurement is attached around the corner prism, and the telescope By collimating this target plate, accurate angle and distance measurements can be made.

However, with conventional reflectors, when emitting light toward the reflector, for example, when measuring at night or in a dark environment such as in a tunnel, or when measuring long distances, the corners of the reflector cannot be used. There was a problem that the center of the prism could not be sighted correctly, so surveying in dark environments,
Alternatively, a reflecting device has been provided which allows the center of the corner prism of the reflecting device to be easily collimated even during long-distance surveying.

For example, in the reflecting device disclosed in Japanese Utility Model Application Publication No. 62-146976, an illumination light source is disposed behind a corner prism, and a luminous flux from the illumination light source is placed near the apex formed by three reflecting surfaces of the corner prism. It is characterized by forming a transmission surface for transmitting the light, and using the transmission surface as a collimation target for a telescope.

[Problem that the invention seeks to solve]

However, the idea described in the above publication is for illuminating the corner prism so that the optical rangefinder can be correctly directed toward the reflecting mirror, and is not for aiming at a target for angle measurement. Surveying machines whose purpose is to perform simultaneous measurements have had the problem of not being able to obtain sufficient angle measurement accuracy. That is, since the transmission surface near the apex of the pentagonal pyramid of the corner prism has an equilateral triangular shape,
When using this as a sighting target with a telescope, the center of the triangle becomes the center of sight, but since it is not possible to sight the vertex directly on a triangular surface, when surveying a short distance area, the center of sight is the center of the triangle. The target looks big so look f! There is a problem with decreased accuracy.

Furthermore, in conventional light wave distance meter reflectors, in order to measure distance, the measurement point was set to be directly below the reflection base position of the reflector or directly below the center of gravity of the device weight. Since the position of the reflection reference point of this light wave does not match the position of the sighting target when the reflection device is sighted with a telescope, there is a problem in that it is difficult to set the sighting target correctly.

[Means for solving problems]

Therefore, the present invention has developed a substantially triangular pyramid shape so that the center of the corner prism of the reflector can be easily sighted even when surveying in a dark environment or surveying long or short distances. None, in a reflecting device having a corner prism in which the front side forms an input/output transmission plane and the three side faces form three reflecting surfaces with ridge lines as mutually perpendicular apexes, an illumination light source is arranged behind the corner prism. In addition, a light wave range finder and a theodolite are provided, characterized in that a reflecting device is supported so that the apparent top position collimated by the illumination light source coincides with the measurement point. In addition to providing a reflecting device with a diffraction lamp for a combined surveying machine, in the above device, scattering rays for scattering and emitting the luminous flux from the illumination light source are provided on the ridge line formed by the three reflecting surfaces of the corner prism. It is an object of the present invention to provide a reflection device with a diffraction lamp for a light wave type surveying machine, which is characterized by the following structure.

[Effect]

According to the above reflecting device according to the present invention, when collimating the corner prism with a telescope, the reflecting device is supported so that the upper apex position apparently coincides with the measurement point, so the direction of the corner prism is Even if it is tilted to some extent, the upper apex position apparently coincides with the measurement point, so it is possible to eliminate angle measurement errors due to collimation errors. Also, 3
Since the ridgeline formed by the two reflecting surfaces scatters the light beam from the illumination light source, the intersection of the emitted scattered rays can be easily and accurately collimated as the apparent upper vertex of the prism.

〔Example〕

Hereinafter, the present invention will be described in detail based on the illustrated embodiments. Reference numeral 1 denotes a reflecting device according to the present invention, which includes a corner prism 2, a holder 3 holding the corner prism 2, and a holder 3 fixed to the holder 3. A lighting device 4 is provided.

The corner prism 2 has a front surface forming a large emission and transmission plane 21, and three side surfaces forming three reflecting surfaces whose apex angles are perpendicular to each other. In the case of the example, corner prism 2
is made of transparent optical glass, and as shown in Figures 2 and 3, it has a substantially triangular pyramid shape with three edges cut to equal lengths around the axis of the cylinder. A large emission transmission plane 21 on which light enters is formed in front, and
Three reflecting surfaces 25, 26, and 27 are formed on the side surface, and the ridge lines 22, 23, and 24 form apex angles that are perpendicular to each other, so that the incident light is reflected in the same direction as the incident direction. Further, the apex angle at which the three ridge lines intersect forms an apex 28.

Here, the corner prism 2 according to the present invention has scattering rays for scattering and emitting the luminous flux from the illumination device 4 on the ridge lines 22, 23, and 24 formed by the three reflecting surfaces. The scattered lines are arranged so as to intersect at the vertex 28.

As shown in the first figure, the holder 3 holds the corner prism 2 by applying elastic force with a presser washer 32 provided deep inside and a coil spring 33, and by attaching a cap 31.

Further, an illumination device 4 is provided at one end of the holder 3 on the side opposite to the cap 31 in relation to the apex 28 of the corner prism 2. In the case of the embodiment, the illumination device 4 includes a socket 41 screwed into and attached to a mounting cylinder portion 34 of the holder 3 formed at the rear that accommodates the presser washer 32 and the coil spring 33, and a lighting device provided in the socket 41. It consists of a light source 42. In this embodiment, the illumination light source 42 is composed of a light emitting diode and is opposed to the apex 28 of the corner prism 2 . 43 is a lead wire of the illumination light source 42, and 44 is a terminal to which the lead wire 43 is connected.

The terminal 44 is provided as a connector to which a power cable 45 is connected.

Here, in the above-mentioned reflection device I, the device of the present invention has the advantage that the ridge lines 22, 23, .
24, the upper vertex position A is as shown in the fourth diagram,
It is supported by a support 5 that coincides with measurement point 0.

In the case of the embodiment shown in the first figure, the support 5 consists of an L-shaped mounting member 51 and a mini ball 52, and a threaded portion on the outer periphery of the mounting cylinder portion 34 of the holder 3 is inserted into a screw hole 53 provided in the mounting member 51. By screwing together the apex 2 of the corner prism 2
8 is constructed so that the upper apex position A and the axis of the mini-pole 52 coincide, and by setting the axis on the measurement point O, the apparent position is the upper apex position. A is arranged to coincide with the measurement point O, as shown in the fourth figure.

Here, the apparent distance F41° of the vertex 28 from the large emission transmission plane 21 at the upper vertex position A is the distance of the apex 28 from the large emission transmission plane 21 as l, and the refractive index of the corner prism 2 as n. Then, 1, = ・ ・ ・ ・ ・ ・■
It is obtained by the relational expression.

〔effect〕

As described above, the reflection device with a diffraction light in a light wave surveying machine according to the present invention has a substantially triangular pyramid shape, the front side is a large emission transmission plane, and the three side faces are vertices that are perpendicular to each other. In a reflecting device that reflects incident light in the same direction as the incident direction, it has a corner prism having three reflecting surfaces, and an illumination light source is disposed behind the corner prism, and the illumination light source is collimated by the illumination light source. The reflector is supported so that the top apex position coincides with the measurement point, so even if the reflector deviates slightly from the correct angle, the angular error can be ignored and the measurement point In addition to having the effect of being able to accurately set a reflection device above, in the above device, scattering rays for scattering and emitting the luminous flux from the illumination light source are provided on the ridge line formed by the three reflection surfaces of the corner prism. This is used as a collimation target by the telescope, so the scattered rays made up of the three ridge lines illuminated from behind by the illumination device clearly indicate the apex of the reflection device, which has the effect of increasing collimation accuracy. be.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the main part of an embodiment of the device of the present invention, FIG. 2 is a front view of a corner prism, which is the main part, seen from the ridge line direction, and FIG. 3 is a plan view thereof. Figure, 4th
The figure is an explanatory view schematically explaining how the corner prism is held. 1...Reflector 2...Corner prism 21...Incidence/output transmission plane 22.23.24...Ridge line 25.26.27...Reflection surface 28...Vertex 3...Holder 31... Cap 32... Presser washer 33... Coil panel 4... Socket 42... Illumination light source 44... Terminal 5 5 ・ A ・ 0 ・ ・ Power cable ・ Holder ・ Apparent upper apex position ・ Measurement point Figure Figure 3 Figure 1 Figure

Claims (2)

[Claims] (1) It has a corner prism that is approximately triangular pyramid-shaped, with the front surface serving as an input/output transmission plane, and the three side surfaces serving as three reflective surfaces with the ridge lines as mutually perpendicular vertices. In the reflecting device, an illumination light source is disposed behind the corner prism, and the reflecting device is supported so that the apparent apex position collimated by the illumination light source coincides with the measurement point. A reflector with a diffraction lamp for a light wave surveying machine, characterized by: (2) In the device according to claim 1,
A reflection device with a diffraction light for a light wave surveying machine, characterized in that a scattering line for scattering and emitting a luminous flux from the illumination light source is formed on a ridgeline formed by three reflecting surfaces of the corner prism.