CN213182022U

CN213182022U - Device for improving light path of distance measuring sensor

Info

Publication number: CN213182022U
Application number: CN202022007611.2U
Authority: CN
Inventors: 黄华
Original assignee: KODENSHI SY CORP
Current assignee: KODENSHI SY CORP
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-11
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a device for improving the light path of a distance measuring sensor, which comprises a first shell, wherein a first cavity and a second cavity are arranged in the first shell side by side; a first accommodating groove is formed in the first chamber, a first convex lens is mounted in the first accommodating groove, a light hole is formed in the part, corresponding to the first convex lens, of the bottom of the first chamber, and the first convex lens is used for converging light rays emitted by the emitter; the second containing groove has been seted up in the second cavity, install the second convex lens in the second containing groove, the bottom of second cavity is equipped with the light trap corresponding to the part of second convex lens, the second convex lens is used for assembling the light after being reflected by the measured object, light filtering part is installed to the top of second convex lens to light that will be reflected back by the measured object filters, reaches the effect of improving the light path, and when exceeding the nominal, output value can not fluctuate, thereby can not produce wrong output, improves the accuracy of range finding.

Description

Device for improving light path of distance measuring sensor

Technical Field

The utility model relates to a sensor field, in particular to improve device of range sensor light path.

Background

The infrared distance measuring sensor detects the distance between the obstacles by utilizing the principle that the infrared signals meet the obstacles with different reflection intensities. The infrared distance measuring sensor is provided with a pair of infrared signal transmitting and receiving diodes, the transmitting tube transmits an infrared signal with specific frequency to a measured object, the receiving tube receives the infrared signal reflected by the measured object, when the infrared detection direction meets an obstacle, the infrared signal is reflected to be received by the receiving tube, after being processed, the infrared signal returns to the processor through the digital sensor interface, and the processor can identify the change of the surrounding environment by using the infrared return signal.

However, when the existing infrared distance measuring sensor exceeds the nominal value, the output value fluctuates obviously, so that error output is easy to generate, and the accuracy of distance measurement is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve device of range finding sensor light path to solve current infrared range finding sensor when exceeding the nominal, the output value has obvious undulant, thereby leads to easily producing wrong output, reduces the problem of the accuracy of range finding.

According to an embodiment of the present invention, there is provided a device for improving a light path of a distance measuring sensor, including a first housing, in which a first chamber and a second chamber are disposed side by side;

a first accommodating groove is formed in the first chamber, a first convex lens is mounted in the first accommodating groove, a light hole is formed in the part, corresponding to the first convex lens, of the bottom of the first chamber, and the first convex lens is used for converging light rays emitted by the emitter;

the second cavity has been seted up in the second chamber, install the second convex lens in the second storage tank, the bottom of second cavity is equipped with the light trap corresponding to the part of second convex lens, the second convex lens is used for assembling the light after will being reflected by the testee, light filtering part is installed to the top of second convex lens.

Specifically, the optical filter part comprises a second shell and an optical filter, a light transmission groove is formed in the top of the second shell, an opening is formed in the bottom of the second shell, an accommodating cavity is formed in the second shell, and the optical filter is installed in the accommodating cavity.

Specifically, the second shell comprises a bottom plate and an upper cover buckled with the bottom plate, and the bottom plate is detachably connected with the upper cover.

Specifically, the optical filter is a 940nm band-pass filter, the transmittance of the optical filter is 95%, and the cut-off rate is greater than 4.

The embodiment of the utility model provides an improve device of range finding sensor light path installs the filter house in the top of second lens to light that will be reflected back by the measured object filters, reaches the effect of improving the light path, when exceeding the nominal, and the output value can not fluctuate, thereby can not produce wrong output, improves the accuracy of range finding.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of an apparatus for improving the optical path of a distance measuring sensor provided by the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a graph of distance versus output voltage for a ranging sensor having means for improving the optical path of the ranging sensor.

The optical filter comprises a first shell 1, a first cavity 2, a first accommodating groove 3, a second cavity 4, a second accommodating groove 5, a second shell 6, a bottom plate 61, an upper cover 62, an optical filter 7, a light transmission groove 8 and an opening 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

According to an embodiment of the present invention, as shown in fig. 1 and 2, there is provided a device for improving a light path of a distance measuring sensor, comprising a first housing 1, wherein a first chamber 2 and a second chamber 4 are arranged in the first housing 1 side by side; a first accommodating groove 3 is formed in the first chamber 2, a first convex lens is mounted in the first accommodating groove 3, a light hole is formed in the bottom of the first chamber 2 corresponding to the portion of the first convex lens, and the first convex lens is used for converging light rays emitted by the emitter; a second accommodating groove 5 is formed in the second chamber 4, a second convex lens is installed in the second accommodating groove 5, a light hole is formed in the bottom of the second chamber 4 corresponding to the part of the second convex lens, the second convex lens is used for converging light reflected by a measured object, and a light filtering part is installed above the second convex lens.

In a specific application, the device for improving the optical path of the ranging sensor is arranged above the transmitter and the receiver, and the first convex lens is positioned above the light emitting area of the transmitter, and the second convex lens is positioned above the light sensitive area of the receiver. When the sensor works, the emitted light of the emitter is converged by the first convex lens, then irradiates on a measured object, is reflected by the measured object and then enters the light filtering part, and the light is converged by the second convex lens after being filtered by the light filtering part and finally received by the receiver. After the device for improving the light path is additionally arranged on the distance measuring sensor, as shown in fig. 3, the output signal of the distance measuring sensor cannot fluctuate, is more stable and has good consistency.

This embodiment provides a device for improving range finding sensor light path, installs filter house in the top of second lens to the light that will be reflected by the measured object back filters, reaches the effect of improving the light path, when exceeding nominal, and the output value can not fluctuate, thereby can not produce wrong output, improves the accuracy of range finding.

In the above embodiment, as shown in fig. 2, the optical filter portion includes a second housing 6 and an optical filter 7, a light-transmitting groove 8 is formed at the top of the second housing 6, an opening 9 is formed at the bottom of the second housing 6, an accommodating cavity is formed in the second housing 6, and the optical filter 7 is installed in the accommodating cavity.

The opening 9 and the light-transmitting groove 8 are used for ensuring the light to pass through, and the shell plays a role in protecting and fixing the optical filter 7. Specifically, the optical filter 7 is a 940nm band-pass filter 7, the transmittance of the optical filter 7 is 95%, and the cut-off rate is greater than 4, so that the effect of improving the optical path is further improved.

Further, the second housing 6 includes a bottom plate 61 and an upper cover 62 fastened to the bottom plate 61, and the bottom plate 61 and the upper cover 62 are detachably connected to facilitate the assembly, disassembly and replacement of the optical filter 7.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. The device for improving the optical path of the distance measuring sensor is characterized by comprising a first shell (1), wherein a first chamber (2) and a second chamber (4) are arranged in the first shell (1) side by side;

a first accommodating groove (3) is formed in the first chamber (2), a first convex lens is installed in the first accommodating groove (3), a light hole is formed in the part, corresponding to the first convex lens, of the bottom of the first chamber (2), and the first convex lens is used for converging light rays emitted by the emitter;

second storage tank (5) have been seted up in second cavity (4), install the convex lens of second in the second storage tank (5), the bottom of second cavity (4) is equipped with the light trap corresponding to the part of the convex lens of second, the convex lens of second is used for assembling the light after will being reflected by the testee, light filtering part is installed to the top of the convex lens of second.

2. The device for improving the optical path of the distance measuring sensor according to claim 1, wherein the optical filter part comprises a second housing (6) and an optical filter (7), a light-transmitting groove (8) is formed at the top of the second housing (6), an opening (9) is formed at the bottom of the second housing (6), an accommodating cavity is formed in the second housing (6), and the optical filter (7) is installed in the accommodating cavity.

3. The device for improving the optical path of a distance measuring sensor according to claim 2, wherein the second housing (6) comprises a bottom plate (61) and an upper cover (62) buckled with the bottom plate (61), and the bottom plate (61) and the upper cover (62) are detachably connected.

4. The device for improving the optical path of a ranging sensor according to claim 2, characterized in that the filter (7) is a 940nm band-pass filter (7), the transmittance of the filter (7) is 95%, and the cut-off rate is more than 4.