TWI595255B - Calibrated system of laser meter - Google Patents

Description

Laser ruler calibration system

The present invention relates to a laser calibration system, and more particularly to a laser calibration system that calibrates the optical path deviation of a laser scale.

The laser distance measuring device must adjust the parallelism of the transmitted light path and the received light path before the shipment, and the focusing of the receiving module. Due to the degree of deviation of the emitted light path and the received light path and the quality of the focus, the quality of the laser signal is directly affected, thereby reducing the accuracy of the measurement and the like.

Therefore, it is indeed necessary to find a better emission light path, a receiving light path and a focusing scheme for the laser ranging device.

In view of this, the present invention provides a laser calibration system that can effectively calibrate the optical path.

A laser scale calibration system according to the present invention includes a base, a light emitting module and a light receiving module. The base has a shaft hole, a counterbore and an accommodating space, and the shaft hole communicates with the counterbore, and the hole diameter of the counterbore is larger than the hole diameter of the shaft hole. The light emitting module is disposed in the counterbore, and the light emitting module abuts the interface between the shaft hole and the counterbore with an arc surface, so that the light emitting module can rotate all the way. Light connection The receiving module is set in the accommodating space.

According to another aspect of the present invention, a laser calibration system includes a base, a light emitting module, a light receiving module, and a light reflecting component. The pedestal has a shaft hole, a counterbore and an accommodating space, and the shaft hole is connected with the counterbore; the light emitting module is disposed in the counterbore and emits a light beam; the light receiving module is disposed in the accommodating space and receives a light beam reflected from the outside; and the light reflecting element is disposed on a second optical axis. The light beam is projected by a displacement of the light reflecting element to project a spot of the light beam reflected from the outside into a predetermined range of the light receiving module.

According to another aspect of the present invention, a laser calibration system includes a base, a light emitting module, a light receiving module, and a light reflecting component. The pedestal has a shaft hole, a counterbore and an accommodating space, and the shaft hole communicates with the counterbore; the light emitting module is disposed in the counterbore and emits a light beam, and the light beam travels on a first optical axis; The receiving module is disposed in the accommodating space and receives the light beam traveling on a second optical axis; and the light reflecting component is disposed on the second optical axis. The first optical axis is parallel to the second optical axis by the rotation of the light emitting module, and a light spot of the light beam is projected into a predetermined range of the light receiving module by displacement of the light reflecting component.

The aperture of the counterbore is larger than the aperture of the shaft hole, and the light emitting module abuts the interface between the shaft hole and the counterbore with an arc surface.

The light emitting module can be rotated to abut the interface in a full-circle manner.

The laser calibration system may further include an adjustment portion that displaces the light reflecting element in a normal direction of a reflecting surface.

The laser calibration system can further include a lens in which the lens and the light are reversed The shooting element and the light receiving module are arranged along the second optical axis

The light emitting module may include a laser light emitting diode, and the light receiving module may include a crash light diode.

In order to provide a better understanding of the above and other aspects of the present invention, the following detailed description of the embodiments and the accompanying drawings

100‧‧‧Laser ruler calibration system

10‧‧‧ Ontology

12‧‧‧Clamping Department

14‧‧‧Loading Department

16‧‧‧Regulatory Department

20‧‧‧ Pedestal

22‧‧‧Axis hole

24‧‧‧ accommodating space

26‧‧‧ counterbore

30‧‧‧Light emitting module

40‧‧‧Light receiving module

50‧‧‧ lens

60‧‧‧Light reflecting elements

70‧‧‧ boards

80‧‧‧Electrical connection埠

X1‧‧‧first optical axis

X2‧‧‧second optical axis

S210, S220, S230‧‧‧ steps

FIG. 1 is a schematic diagram of a laser calibration system according to an embodiment of the invention.

Figure 2 is a schematic illustration of one of the pedestals of the laser scale calibration system of the present invention.

FIG. 3 is a schematic diagram showing the equivalent structure of the laser calibration system of FIG. 1.

FIG. 4 is a flow chart showing a method for calibrating an optical path according to an embodiment of the present invention.

Please refer to FIG. 1 and FIG. 2 simultaneously. The laser calibration system 100 of the present embodiment mainly includes a body 10, a base 20, a light emitting module 30, a light receiving module 40, and a lens 50. A light reflecting element 60, a circuit board 70 and an electrical connection port 80. The body 10 is configured to receive other components; the base 20 can accommodate the light emitting module 30 and the light receiving module 40; the light emitting module 30 can emit a light beam toward a target; and the light receiving module 40 can receive the target. The light beam reflected by the object; the lens 50 can converge the light beam; the light reflecting element 60 can change the traveling direction of the light beam; the circuit board 70 can carry the laser scale calibration system 100, and is electrically connected to the external device (not shown) ) Electrical connection.

When the light emitting module 30 emits a light beam toward an external target, it will first Reflection occurs on a reflective surface of the light reflecting element 60, and then passes through the lens 50 and is directed toward the target; then, after the light beam is reflected by the target, it passes through the lens 50 and is reflected by the light reflecting element 60. Received by the light receiving module 40.

In addition, the body 10 has a clamping portion 12, a carrying portion 14 and an adjusting portion 16. Specifically, the light reflecting element 60 is clamped on the body 10 by the clamping portion 12, and the reflecting surface of the light reflecting element 60 can bear on the carrying portion 14, and the adjusting portion 16 is used to adjust the light reflecting element. The position of 60 causes the light reflecting element 60 to be displaced in the normal direction of the reflecting surface, that is, the light reflecting element 60 moves forward/backward along the normal direction of the reflecting surface, thereby causing the light beam reflected from the target to pass through the light reflecting element 60. After the reflection is generated, the light is received by the light receiving module 40. Moreover, since the light reflecting component 60 is used, the circuit board (not shown) of the light receiving module 40 can be integrated with the circuit board 70 of the body 10, thereby simplifying the overall structure of the laser calibration system 100.

As shown in FIG. 2, the base 20 includes a shaft hole 22, an accommodating space 24, and a counterbore 26. The light emitting module 30 is disposed in the counterbore 26 , and the light receiving module 40 is disposed in the receiving space 24 .

Specifically, the aperture of the counterbore 26 is larger than the aperture of the shaft hole 22, and therefore, an arcuate surface of the light emitting module 30 can abut against an interface between the shaft hole 22 and the counterbore 26. The curved surface of the light emitting module 30 may be a circular arc surface. In this embodiment, the light-emitting module 30 is tightly fitted to the interface by a circular arc-shaped spherical surface that can be rotated all the way.

Figure 3 is a diagram showing the equivalent of the laser scale calibration system 100 of Figure 1. Schematic diagram. Here, since the main function of the light reflecting element 60 is to change the traveling direction of the light beam, the light reflecting element 60 is omitted in Fig. 3 for the sake of simplicity and convenience of explanation, but the invention is not limited thereto.

Referring also to FIGS. 1 , 2 , and 3 , the counterbore 26 communicates with the shaft hole 22 and emits a light beam by the light emitting module 30 . Wherein, after the light beam is emitted from the light emitting module 30, the direction in which the light beam travels is a first optical axis X1 direction. Specifically, if the light emitting module 30 rotates at the interface for full-circle rotation, it will change. The direction of travel of the beam means to change the direction of the first optical axis X1. In other words, the direction of the first optical axis X1 can be changed by rotating the light emitting module 30; and the accommodating space 24 is disposed at a second light formed by the lens 50, the light reflecting element 60, and the light receiving module 40. On axis X2. In short, the light-emitting module 30 disposed on the counterbore 26 is also disposed on the first optical axis X1, and the light-receiving module 40 disposed in the accommodating space 24 is disposed on the second optical axis X2. on.

On the other hand, since the light-emitting module 30 can be rotated all the way to the interface by its circular arc-shaped spherical surface, the second optical axis X2 is also interlocked when the direction of the first optical axis X1 is changed. That is, when the light emitting module 30 rotates, the direction in which the light beam travels (ie, the direction of the first optical axis X1) is changed, thereby causing the traveling direction of the light beam reflected from the target (ie, the second optical axis X2). Direction) change.

In one embodiment, the light emitting module 30 includes a light emitting component, wherein the light emitting component can employ a laser emitting diode; the light receiving module 40 includes a light receiving component, wherein the light receiving component can employ a collapse light. Polar body; lens 50 can be a receiving large lens; light reflecting element 60 includes a light reflecting mirror; and light emission The light beam emitted by the module 30 and the light beam received by the light receiving module 40 may be a laser light.

FIG. 4 is a flow chart showing a method for calibrating an optical path according to an embodiment of the present invention. It should be noted that the optical path calibration method disclosed in FIG. 4 can be applied to the laser calibration system 100 of FIG. 1, and therefore, only the laser calibration system 100 disclosed in FIG. 1 will be described below, but it is not necessary to Limit the invention.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , the light emitting module 30 of the laser calibration system 100 is located on the first optical axis X1 , and the light receiving module 40 and the lens 50 are located on the second optical axis X2 . During calibration, the first optical axis X1 and the second optical axis X2 are parallel to each other, and a spot of the light beam is projected into a predetermined range of the light receiving module 40, so that the light receiving module 40 receives the strongest. Light energy.

In step S210, the light beam is emitted by the light emitting module 30. Thereby, the light beam emitted from the light emitting module 30 is directed toward the target object, is reflected by the target object, passes through the lens 50, and then reflects on the reflecting surface of the light reflecting element 60.

In step S220, the light emitting module 30 is coarsely adjusted. In this step, the direction of the first optical axis X1 is changed by changing the emission angle of the light beam by adjusting the light emitting module 30 in a full-circle manner, and the direction of the second optical axis X2 is changed to reflect the target. The light beam passes through the lens 50 and is reflected by the light reflecting element 60, and is projected onto the light receiving module 40.

In particular, the light emitting module 30 can continuously emit a light beam. Also, the light beam reflected by the target penetrates the lens 50 and changes the direction of the light path via the light reflecting element 60. At this time, the light beam reflected by the light reflecting element 60 may not be accurate. The ground is projected on the light receiving module 40, but the light emitting module 30 can be adjusted by coarse adjustment, for example, the light emitting module 30 is rotated all the way to change the direction of the first optical axis X1. At the same time, the direction of the second optical axis X2 also changes synchronously. Thereby, the light beam reflected from the target can be concentrated on the light receiving module 40.

In step S230, the light reflecting element 60 is finely tuned. In this step, after it is determined that the light beam can be concentrated on the light receiving module 40, the light reflecting element 60 can be adjusted in a fine adjustment manner, and the light reflecting element 60 is displaced forward/backward in the normal direction of the reflecting surface, with a view to After the light beam is reflected by the light reflecting element 60, the light receiving module 40 can be focused on the light receiving module 40, so that a light spot of the light beam is projected into a predetermined range of the light receiving module 40, so that the light receiving module 40 receives the strongest light. energy. Specifically, the fine-tuning light reflecting element 60 may be such that the light reflecting element 60 is displaced forward/backward in the normal direction of the reflecting surface via the adjusting portion 16 on the adjusting body 10.

In conclusion, the present invention has been disclosed in the above embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧ Ontology

30‧‧‧Light emitting module

40‧‧‧Light receiving module

50‧‧‧ lens

X1‧‧‧first optical axis

X2‧‧‧second optical axis

Claims (8)

A laser calibration system includes: a base having a shaft hole, a counterbore and an accommodating space, wherein the shaft hole is in communication with the counterbore, the hole having a larger diameter than the hole of the shaft hole; and a light emission The module is disposed in the counterbore, and the light emitting module abuts an interface between the shaft hole and the counterbore with an arc surface, so that the light emitting module can rotate all the way; A light receiving module is disposed in the accommodating space. A laser calibration system includes: a pedestal having a shaft hole, a counterbore and an accommodating space, wherein the shaft hole is in communication with the counterbore; a light emitting module is disposed in the counterbore and emits a light receiving module disposed in the accommodating space to receive the light beam reflected from the outside; and a light reflecting component disposed on a second optical axis; wherein the light beam is configured by the light reflecting component The displacement of the light beam from the external reflection is projected into a predetermined range of the light receiving module. A laser calibration system includes: a pedestal having a shaft hole, a counterbore and an accommodating space, wherein the shaft hole is in communication with the counterbore; a light emitting module is disposed in the counterbore and emits a light beam that travels on a first optical axis; a light receiving module disposed in the accommodating space to receive the light beam traveling on a second optical axis; and a light reflecting component disposed on the second optical axis; wherein the light emitting mode is The rotation of the group is such that the first optical axis is parallel to the second optical axis, and a spot of the light beam is projected into a predetermined range of the light receiving module by displacement of the light reflecting element. The laser caliper calibration system of claim 2, wherein the aperture of the counterbore is larger than the aperture of the shaft hole, and the light emitting module abuts the shaft hole and the sink with an arc surface An interface between the holes. The laser scale calibration system of claim 4, wherein the light emitting module is rotatably abutted to the interface. The laser scale calibration system of claim 2 or 3, further comprising an adjustment portion that displaces the light reflecting element in a normal direction of a reflecting surface. The laser scale calibration system of claim 2, further comprising a lens, the lens, the light reflecting element and the light receiving module being arranged along the second optical axis. The laser scale calibration system of claim 1, wherein the light emitting module comprises a laser light emitting diode, and the light receiving module comprises a crash light diode.