High precision range finder

High-precision-range-finder Laser Ranging

A high-precision rangefinder belongs to an optical measuring instrument, in particular to a rangefinder which can achieve high-precision values and is characterized by the use of an optical measuring method.

The measurement value and accuracy of the optical rangefinder are determined by adjusting the light path of the micrometer and the scale indicator on the differential meter. The general "wire height rangefinder" depends on the micrometer to adjust the light path and the scale on the differential meter to achieve, but due to the limited accuracy of the differential meter, the accuracy of the measurement value is affected to a certain extent, and the distance measurement is also limited. It brings inconvenience to the measurement work with special requirements.

What is introduced today is to provide a rangefinder with simple structure and easy operation that can achieve high precision values. The following technical solutions are adopted. Including a positioner and a search device, the high-precision rangefinder is also arranged: the positioner is installed on the main shaft and can move relative to it, and the search device is installed on the main shaft and can rotate around the fixed bolt. The telescope and infrared emitter are installed on the locator and search device, and the spindle is equipped with a moving ruler to move on the spindle. The I scale area and II scale area are set on the spindle, and the III scale area is set on the dynamic ruler.

The method of use is as follows: when measuring the length Y, turn the search device, adjust the ratio of the length displayed in the Ⅲ scale area and the length displayed in the Ⅱ scale area of the triangle composed of the search device, the spindle and the ruler to a suitable value K, and lock the target with the locator. Moving the spindle enables the finder to capture the target locked by the locator. At this time, the length value X is displayed in the scale area of I. It can be seen from the similar triangle in Figure 3 that the value of measured length Y is Y=KX.

Illustrated description
Figure 1 is the structure diagram of the rangefinder

high precision rangefinder

                                                                             Figure 1

Figure 2 is the A-A profile structure diagram of Figure 1.

high precision rangefinder

                                                                                 Figure 2

Figure 3 is the measuring principle diagram of the rangefinder

high precision rangefinder

                                                                        Figure 3
In the picture:
1. Locator
2. Search engine
3. Moving ruler
4. Spindle
5.Ⅲ scale area
6. ⅱScale area
7. Anchor bolt
8.I scale area
9. Telescope
10. Infrared transmitter
The following is a detailed description of the embodiments of the high precision rangefinder in combination with the attached drawings. The embodiments are used to illustrate the high precision rangefinder, and are not intended to impose any restrictions on the high precision rangefinder.

Concrete implementation mode
The high precision rangefinder comprises a locator and a search device, which are characterized as follows: the locator (1) is installed on the main shaft (4) and can be moved relative to it, and the search device (2) is installed on the main shaft (4) and can be rotated around the fixing bolt (7). A telescope (9) and an infrared emitter (10) are installed on the locator (1) and search (2), and a moving ruler (3) is installed on the main shaft (4) to move on the main shaft (4). The I scale area (8) and II scale area (6) are set on the main shaft (4), and the Ⅲ scale area (5) is set on the dynamic ruler (3). When in use, turn the search device and adjust the ratio of the length displayed in the Ⅲ scale area and the length displayed in the Ⅱ scale area of the triangle composed of the search device, the spindle and the ruler to a suitable value K. Depending on the distance Y to be measured, the light emitted by the infrared emitter (10) of the locator (1) and the light emitted by the searcher (2) can be interfacing with the target or the telescope (9) of the locator (1) and the telescope (9) of the searcher (2) to lock the target. When the length value X is displayed on the I scale area (8), the value of X is measured with the infinite precision measuring caliper. From the similar triangle in Figure 3, it can be seen that the value of measured length Y is Y=KX, which can theoretically improve the accuracy of measured distance Y to a great extent.

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