CN214151036U - Laser range finder and optical mechanism support for same - Google Patents

Abstract

The application relates to a laser range finder and be used for laser range finder's optical mechanism support, wherein, the support includes: the laser emitting device comprises a first mounting part and a second mounting part, wherein the first mounting part is used for mounting a laser emitting component; the second mounting part is used for mounting a laser receiving component; the laser receiving component comprises a laser receiving mirror and a close-distance optical path correcting mirror; the edge of second installation department is equipped with breach portion, breach portion can be right closely light path correction mirror fixes a position.

Description

Laser range finder and optical mechanism support for same

Technical Field

The application relates to a laser range finder and an optical mechanism support for the same.

Background

The laser range finder is a tool for measuring length or distance, and can be combined with angle measuring equipment or a module to measure parameters such as angle, area and the like. Most of transmitting and receiving optical systems in the laser range finder are distributed in a parallel optical axis manner, and when short-distance ranging is performed due to non-common optical paths, an imaging light spot of a transmitted off-axis light spot passing through the optical receiving system deviates from the center of a detecting element, so that a detection signal is weakened, even an effective signal cannot be obtained, and the precision of the laser range finder is influenced or the ranging cannot be performed. The existing methods for solving the short-distance laser ranging are various, and the installation of a short-distance optical path correcting mirror is one of the solutions. However, when the short-distance optical path correcting mirror is installed, it is difficult to make the center point of the short-distance optical path correcting mirror and the center point of the laser receiving mirror and the laser emitting hole correspond to the same straight line. Therefore, it is necessary to design an optical mechanism bracket for a laser range finder so as to install a short-distance optical path correcting mirror and achieve the purpose of precise distance measurement at a short distance.

SUMMERY OF THE UTILITY MODEL

The application aims to provide an optical mechanism support for a laser range finder so as to conveniently install a short-distance optical path correcting mirror and achieve the purpose of short-distance accurate ranging.

One aspect of the present application provides an optical mechanism mount for a laser rangefinder, the mount comprising a first mount portion and a second mount portion, the first mount portion for mounting a laser emitting component; the second mounting part is used for mounting a laser receiving component; the laser receiving component comprises a laser receiving mirror and a close-distance optical path correcting mirror; the edge of second installation department is equipped with breach portion, breach portion can be right closely light path correction mirror fixes a position.

In some embodiments, the stand further comprises a third mounting portion for mounting an imaging component.

In some embodiments, the first mounting portion and the third mounting portion are adjacent, and a glass mirror mounting groove is formed in the upper portion of the first mounting portion and the upper portion of the third mounting portion.

In some embodiments, the bracket further comprises mounting holes for removably securing a circuit control board.

In some embodiments, the notched portion comprises one or more notches.

In some embodiments, the plurality of notches are evenly distributed at the edge of the second mounting portion.

The application further provides a laser range finder, which comprises the optical mechanism bracket for the laser range finder.

In some embodiments, the laser range finder comprises a laser receiving mirror and the short-distance optical path correcting mirror, and the laser receiving mirror and the short-distance optical path correcting mirror are of an integral structure.

In some embodiments, the laser receiving mirror comprises one or more positioning clips, and the positioning clips are matched with the notches to realize the positioning of the laser receiving mirror.

In some embodiments, in the mounted state, the center point of the laser receiving mirror, the center point of the short distance optical path correcting mirror, and the center point of the first mounting portion are on the same straight line.

Drawings

The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:

FIG. 1 is a schematic illustration of a laser rangefinder according to some embodiments of the present application;

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

FIG. 3 is a schematic illustration of an optical mechanism mount for a laser rangefinder without the installation of a close-up optical path corrector lens and a laser receiver lens according to some embodiments of the present application; and

FIG. 4 is a schematic diagram of an optical mechanism mount mounted close-up optical path corrector mirror and laser receiver mirror for a laser rangefinder according to some embodiments of the present application.

In the figure, 100 is a laser range finder, 110 is a protective screen, 120 is a display screen, 130 is a key, 140 is a key printed circuit board, 150 is a damping material, 160 is an upper cover, 170 is an optical mechanism bracket, 180 is a bottom shell waterproof ring, 190 is a lower cover, 111 is a hollow part, 161 is a screen support part, 162 is a button support part, 171 is a second installation part, 172 is a laser receiving mirror and a short-distance optical path correction mirror installation groove, 173 is a third installation part, 174 is a glass mirror installation groove, 175 is a first installation part, 176 is a laser receiving mirror, 177 is a short-distance optical path correction mirror, 178 is a glass mirror, 179 is a positioning gap, 200 is a circuit control board, and 210 is an installation hole.

Detailed Description

Reference will now be made in detail to exemplary embodiments or implementations, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

A laser rangefinder is an instrument that accurately measures the distance to a target using a parameter of modulated laser light. Laser light is a very pure color, highly concentrated in energy, and well directed. A laser rangefinder is an instrument that uses laser to measure distance. Its principle of action is very simple: the distance is determined by measuring the time from the start of laser emission to the reflection of the laser off the target. For example, if the time from the start of laser emission to the time of reflection from the moon is determined to be 2.56 seconds, the one-way time of laser emission to the moon is equal to 1.28 seconds, and the speed of the laser is the speed of light, which is equal to thirty-ten thousand kilometers per second. The distance of the moon from the earth is thus measured as the product of the one-way time and the speed of light, i.e. thirty-eight-and-four-thousand kilometers. In order to transmit and receive laser and time, the laser range finder is composed of a laser transmitter, a receiver, a clock frequency oscillator, an oscillation counter and the like.

Laser rangefinders can be generally classified into phase method laser rangefinders and pulse method laser rangefinders according to a distance measuring method. The phase method laser distance measuring instrument performs amplitude modulation by using a laser beam, measures a phase delay generated once by a modulated light round trip measuring line, and converts a distance represented by the phase delay according to the wavelength of the modulated light. I.e. the time taken for light to traverse the line is measured indirectly.

The pulse laser distance meter emits one or a series of short pulse laser beams to the target during operation, the photoelectric element receives the laser beams reflected by the target, the timer measures the time from the emission to the reception of the laser beams, and the distance from the laser distance meter to the target is calculated.

Most of the existing laser range finders have emission and receiving optical systems distributed in parallel optical axes, and when short-distance ranging is performed due to non-common optical paths, emitted off-axis light spots can deviate from the center of a detection element through imaging light spots of the optical receiving system, so that detection signals are weakened, even effective signals cannot be obtained, and the precision of the laser range finders is influenced or ranging cannot be performed. The existing methods for solving the short-distance laser ranging are various, and the installation of a short-distance optical path correcting mirror is one of the solutions. However, when the short-distance optical path correcting mirror is mounted, it is difficult to align the center point of the short-distance optical path correcting mirror with the center point of the laser receiving mirror and the first mounting portion on the same straight line. Therefore, it is necessary to design an optical mechanism bracket for a laser range finder so as to install a short-distance optical path correcting mirror and achieve the purpose of precise distance measurement at a short distance. In the embodiment of the application, the short-distance light path correcting mirror and the laser receiving mirror are designed into an integral structure. The optical mechanism mount for a laser rangefinder according to an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic illustration of a laser rangefinder according to some embodiments of the present application; fig. 2 is an exploded schematic view of fig. 1.

Fig. 1 and fig. 2 show a hand-held laser distance measuring instrument 100, and the hand-held laser distance measuring instrument 100 has the advantages of light weight, small size, simple operation, and the like, can be used in the fields of industrial measurement and control, mines, ports, and the like, can also be used in the building industry, can be used for house measurement, and the like, can measure the distance, the area, and the volume, and can measure indoors and outdoors.

In some embodiments, laser rangefinder 100 may include an upper cover assembly, an optical mechanism assembly, and a lower cover assembly. In some embodiments, the optical mechanism assembly may be located within a cavity formed by the upper and lower cover assemblies. In some embodiments, the optical mechanism assembly may be removably attached to the lower cover assembly. In some embodiments, the upper cover assembly and the lower cover assembly may be removably connected. In some embodiments, a bottom case waterproof ring 180 may be detachably connected between the optical mechanism assembly and the bottom cover assembly, and the bottom case waterproof ring 180 may be used for waterproofing. The detachable connection may comprise a snap connection, a threaded connection, etc.

In some embodiments, the cover assembly may include a cover 160, a display screen 120, and a protective screen 110. In some embodiments, the display screen 120 and the protective screen 110 may be sequentially placed on the upper cover 160. In some embodiments, the display 120 may be a liquid crystal display. The protective screen 110 may protect the display screen 120. In some embodiments, the cover 160 may include a screen holder 161. In some embodiments, the display screen 120 and the protective screen 110 may be sequentially placed on the screen holder 161, and the screen holder 161 may position the display screen 120. In some embodiments, the cover 160 may also include a button holder member 162. In some embodiments, the bezel member 161 and the button holder member 162 may each be separate members. In some embodiments, the screen holder 161 and the button holder 162 may be integrally formed. In some embodiments, the upper cover assembly may further include a key 130 and a key printed circuit board 140. In some embodiments, the key pcb 140 and the keys 130 may be sequentially placed on the button holder part 162.

In some embodiments, the upper cover assembly may further include a shock absorbing material 150, and the shock absorbing material 150 may be located between the screen support member 161 and the display screen 120, i.e., the display screen 120 may be located between the shock absorbing material 150 and the protective screen 110. The shock absorbing material 150 may provide shock protection to the display screen 120. In some embodiments, the size of the shock absorbing material 150 and the display screen 120 may match the size of the screen support member 161. In some embodiments, the sum of the thicknesses of the shock absorbing material 150 and the display screen 120 may be equal to the height of the screen support member 161. In some embodiments, the thickness of the shock absorbing material 150 may be the thickness of the shock absorbing material 150 in the installed state. In some embodiments, the shock absorbing material 150 may include foam, shock absorbing rubber, or the like. In some embodiments, the foam may include EVA foam, PU foam, pearl foam, and the like.

In some embodiments, the protective screen 110 may be located on the display screen 120, and the protective screen 110 may be attached to the display screen 120 at a zero distance, i.e., the upper surface of the display screen 120 may be attached to the lower surface of the protective screen 110. Because of the space between the protective screen 110 and the display screen 120 in the prior art, the comfort of the user is not high when using the laser range finder. Therefore, the zero-distance fit between the protection screen 110 and the display screen 120 in the embodiment of the application can improve the comfort level of the user in watching the display screen 120 of the laser range finder.

In some embodiments, the protective screen 110 may include an acrylic lens or the like. In some embodiments, the perimeter of the protective screen 110 may be silk-screened with various patterns and/or text, such as company logo, etc. In some embodiments, the perimeter of the protective screen 110 may also serve a cloaking, aesthetic function.

In some embodiments, the cover assembly may further include a key protection component. In some embodiments, the key protection component may be disposed on the upper portion of the key 130, the key protection component is provided with a hollow portion 111 matching with the protruding portion of the key 130, the protruding portion of the key 130 exposes the hollow portion 111 of the key protection component, a rubber layer may be disposed around the hollow portion 111 on the key protection component, and the key protection component may protect the key 130. In some embodiments, the key protection component and the protective screen 110 may each be separate components. In some embodiments, the key protection component and the protection screen 110 may also be fixedly connected, so that the laser range finder has better integrity and better visual and sensory effects. In some embodiments, the key protection components and protective screen 110 may also be glued together.

In some embodiments, the lower cover assembly may include a lower cover 190, a battery assembly, and a battery cover. In some embodiments, the lower cover 190 may also include a battery compartment. The battery assembly may be disposed within the battery compartment. In some embodiments, a battery cover may be used to open and/or close the battery compartment, which may facilitate the installation and removal of the battery assembly. In some embodiments, the lower cover 190 and the battery cover may be detachably connected. The detachable connection may be a snap connection, a threaded connection, etc. The battery cover may be removed and/or installed from the lower cover 190 by pushing or pulling the battery cover. In some embodiments, the lower cover 190 may further include a battery compartment waterproof ring, the battery compartment waterproof ring may be located between the battery cover and the lower cover 190, the battery compartment waterproof ring may be used for waterproofing, and the battery compartment waterproof ring may protect the battery assembly.

In some embodiments, the battery assembly may be composed of one or more rechargeable batteries connected in series. In some embodiments, the lower cover assembly may further comprise a wireless charging assembly. The wireless charging assembly can include a wireless charging module and a wireless charging adapter plate, and the wireless charging module and the wireless charging adapter plate can be located in the battery compartment. In some embodiments, the wireless charging module and the wireless charging adaptor plate may be detachably connected to the battery cover, and the detachable connection may be a threaded connection or the like. The wireless charging module and the wireless charging adapter plate can wirelessly charge the laser range finder. In some embodiments, the lower cover assembly may further include a wired charging assembly. The wired charging assembly may include a charging platelet and a USB interface plug. The USB interface may be electrically connected with the charging platelet. In some embodiments, the charging platelet and USB interface plug may be removably attached to the lower cover 190, the removable attachment may be a threaded connection, or the like. The charging small plate and the USB interface plug can charge the laser range finder in a wired mode.

In some embodiments, the outer circumference of the lower cover 190 may be covered with a lower cover buffer layer, the lower cover buffer layer may be used to protect the housing of the laser range finder 100, and the lower cover buffer layer may reduce damage to the housing of the laser range finder 100 caused by external vibration when the laser range finder 100 vibrates or receives impact due to the external vibration. The lower cover buffer layer can be made of rubber. For example, natural rubber, styrene-butadiene rubber, isoprene rubber, etc.

In some embodiments, the optical mechanism assembly may include an optical mechanism bracket 170, optical mechanism components, and a circuit control board 200. In some embodiments, the light mechanism bracket 170 and the circuit control board 200 may be removably connected. The optical mechanism part may be electrically connected to the circuit control board 200. In some embodiments, the optical mechanism components may be located within the optical mechanism mount 170. For more details regarding the optical mechanism mount 170, reference may be made to fig. 3, 4 and their associated description.

In some embodiments, the optical mechanism component may include a laser emitting component and a laser receiving component. In some embodiments, the laser emitting component may comprise a laser emitter. In some embodiments, the laser receiving components may include a photodetector, an amplifier, a close-up optical path correction mirror 177, and a laser receiving mirror 176. In some embodiments, the short distance optical path correcting mirror 177 and the laser receiving mirror 176 can be designed as a single structure, and in some embodiments, the single structure of the short distance optical path correcting mirror 177 and the laser receiving mirror 176 can be injection molded.

FIG. 3 is a schematic illustration of an optical mechanism mount for a laser rangefinder without the installation of a proximal optical path corrector lens and a laser receiver lens according to some embodiments of the present application.

FIG. 4 is a schematic diagram of an optical mechanism mount mounted close-up optical path corrector mirror and laser receiver mirror for a laser rangefinder according to some embodiments of the present application.

In some embodiments, the optical mechanism mount 170 may include a first mount portion 175 and a second mount portion 171. The first mounting portion 175 may be used to mount a laser emitting component. In some embodiments, the laser emitting component may include a laser emitter, and an emitting end of the laser emitter may be located on a central axis of the first mounting portion 175. The second mounting portion 171 may be used to mount a laser receiving component. The embodiment of the application adopts the installation short-distance optical path correcting mirror to correct the optical path, namely, the central point of the short-distance optical path correcting mirror and the central points of the laser receiving mirror and the first installation part are correspondingly corrected on the same straight line, so that short-distance accurate distance measurement of the laser distance measuring instrument is realized. In some embodiments, the laser receiving components may include a photodetector, an amplifier, a close-up optical path correction mirror 177, and a laser receiving mirror 176. The short-distance optical path correcting mirror 177 and the laser receiving mirror 176 in the embodiment of the present application can be designed into an integral structure, and the short-distance optical path correcting mirror 177 and the laser receiving mirror 176 can be injection molded into an integral structure. The edge of the second installation portion may be provided with a notch portion, the notch portion may be right the short-distance optical path correction mirror 177 is positioned, so that the central point of the short-distance optical path correction mirror 177 is located on a connecting line with the central point of the second installation portion 171 and the central point of the first installation portion 175. Therefore, the short-distance optical path correcting mirror 177 can correct the optical path, namely, the center of the detection element can be aligned to the imaging light spot of the emitted off-axis light spot after passing through the optical receiving system, so that the detection signal is strong, and the short-distance accurate distance measurement of the laser distance meter is realized.

In some embodiments, the notch portion may include one or more notches. In some embodiments, the notch may be a positioning notch 179. The number of the notches may be determined according to the injection molding process of the laser receiving mirror 176. In some embodiments, the plurality of notches may be evenly distributed at the edge of the second mounting portion 171. For example, when the notch portion includes two notches, the two notches are symmetrically distributed at the edge of the second mounting portion 171.

In some embodiments, the laser receiving mirror 176 and the short distance optical path correcting mirror 177 mounting groove may be located on an upper surface of the second mounting portion 171, and the laser receiving mirror and the short distance optical path correcting mirror mounting groove 172 may be used to mount the laser receiving mirror 176 and the short distance optical path correcting mirror 177 on the second mounting portion 171.

In some embodiments, the optical mechanism mount 170 may further include a third mounting portion 173, and the third mounting portion 173 may be used to mount an image pickup component, which may be used for focusing the laser range finder 100 when a distant target emits laser light. In some embodiments, the first mounting portion 175 and the third mounting portion 173 may not be adjacent to each other, and a glass mirror may be disposed on the first mounting portion 175 and the third mounting portion 173 to prevent water from being emitted from the laser emitting part and the image pickup part, respectively. In some embodiments, as shown in fig. 3 and 4, the first mounting portion 175 and the third mounting portion 173 may be adjacent to each other, so that only one glass mirror 178 is disposed on the first mounting portion 175 and the third mounting portion 173 for waterproofing the laser emitting part and the image pickup part at the same time. The first and third mounting parts 175 and 173 may be provided at upper portions thereof with glass mirror mounting grooves 174, and the glass mirror mounting grooves 174 may be used to mount a glass mirror 178.

The embodiment of the present application further provides a laser range finder 100, and the laser range finder 100 may include the above optical mechanism bracket 170. In some embodiments, the laser range finder 100 may include a laser receiving mirror 176 and the short distance optical path correcting mirror 177, and the laser receiving mirror 176 and the short distance optical path correcting mirror 177 may be a unitary structure. For example, the close distance optical path correcting mirror 177 and the laser receiving mirror 176 may be formed in an integral structure by injection molding.

In some embodiments, the laser receiving mirror 176 includes one or more locator tabs that mate with the notches. During installation, the laser receiver 176 is installed by aligning the locator card with the notch. After the installation, the locator card is located breach department, and the locator card plays the positioning action in the process of installation laser receiver 176. In the mounted state, the center point of the laser receiving mirror 176, the center point of the short distance optical path correcting mirror 177, and the center point of the first mounting portion 175 are on the same straight line. The gap portion of the laser range finder 100 provided by the embodiment of the present application can be used for right the short-distance optical path correcting mirror 177 positions, so that the central point of the laser receiving mirror 176, the central point of the short-distance optical path correcting mirror 177 and the central point of the first mounting portion 175 are on the same straight line. Therefore, the short-distance optical path correcting mirror 177 can correct the optical path, namely, the center of the detection element can be aligned to the imaging light spot of the emitted off-axis light spot after passing through the optical receiving system, so that the detection signal is strong, and the short-distance accurate distance measurement of the laser distance meter is realized. Meanwhile, the camera shooting component of the laser range finder 100 provided by the embodiment of the application can be used for focusing the laser range finder 100 when a long-distance target emits laser, so that long-distance measurement of the laser range finder is realized.

The beneficial effects that the optical mechanism bracket 170 and the laser range finder 100 of the embodiment of the present application may bring include but are not limited to: the notch portion may be used to position the short-distance optical path correction mirror 177 such that the center point of the laser receiving mirror 176, the center point of the short-distance optical path correction mirror 177, and the center point of the first mounting portion 175 are on the same straight line. Therefore, the short-distance optical path correcting mirror 177 can correct the optical path, namely, the center of the detection element can be aligned to the imaging light spot of the emitted off-axis light spot after passing through the optical receiving system, so that the detection signal is strong, and the short-distance accurate distance measurement of the laser distance meter is realized.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An optical mechanism bracket for a laser range finder, the bracket comprising a first mounting portion for mounting a laser emitting component and a second mounting portion; the second mounting part is used for mounting a laser receiving component; the laser receiving component comprises a laser receiving mirror and a close-distance optical path correcting mirror;

the edge of the second installation part is provided with a notch part, and the notch part can position the short-distance optical path correction mirror.

2. The optical mechanism mount for a laser rangefinder of claim 1, further comprising a third mount for mounting an imaging component.

3. The optical mechanism mount for a laser rangefinder according to claim 2, wherein said first mount portion and said third mount portion are adjacent, and a glass mirror mounting groove is provided on an upper portion of said first mount portion and said third mount portion.

4. The optical mechanism mount for a laser rangefinder as claimed in claim 1, wherein said mount further comprises mounting holes for removably securing a circuit control board.

5. The optical mechanism mount for a laser range finder according to claim 1, wherein said notched portion comprises one or more notches.

6. The optical mechanism mount for a laser rangefinder as claimed in claim 5, wherein the plurality of notches are evenly distributed on the edge of the second mount portion.

7. A laser rangefinder comprising an optical mechanism mount for a laser rangefinder according to any of claims 1 to 6.

8. The laser rangefinder of claim 7 comprising a laser receiving mirror and said close range optical path corrector mirror, said laser receiving mirror and said close range optical path corrector mirror being of unitary construction.

9. The laser rangefinder of claim 8 wherein the laser receiving mirror includes one or more locator tabs, the cooperation of the locator tabs with the indentations enabling positioning of the laser receiving mirror.

10. The laser range finder as claimed in claim 8, wherein a center point of the laser receiving mirror, a center point of the short distance optical path correcting mirror and a center point of the first mounting portion are on the same straight line in a mounted state.

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