CN215492380U - Full-automatic headlamp detector - Google Patents

Abstract

The utility model relates to the technical field of headlamp detection, and particularly discloses a full-automatic headlamp detector which comprises a detection box and is characterized in that a lens is arranged on one side, close to a lamp to be detected, of the detection box, a screen is arranged on one side, far away from the detection box, of the lens, detection units are respectively arranged on the periphery of the optical center of the lens, the detection units on the left end and the right end and the detection units on the upper end and the lower end are respectively symmetrically arranged relative to the optical center of the lens, and each detection unit comprises an anti-interference light channel, an optical filter and a photoelectric converter which are sequentially arranged in the direction far away from the lamp to be detected. The automatic alignment device is simple in structure, can be suitable for the headlamp with a larger optical axis deviation range, is wide in application range, and is more accurate in detection result of the detection unit, so that the automatic alignment of the headlamp is more accurate.

Description

Full-automatic headlamp detector

Technical Field

The utility model relates to the technical field of headlamp detection, in particular to a full-automatic headlamp detector.

Background

The full-automatic head-light detector in the market at present includes the box, lens and screen, lens are located on the box towards the terminal surface of head-light, the screen is located on the box terminal surface back to the head-light, set up light sensor near the screen, the light that the head-light jetted out gets into in the box and is sensed by light sensor, the maximum illumination intensity of the light that light sensor detected to get into in the box, the detector removes the detection case according to this data, make the center of detection case and the center of head-light align automatically (be the automatic alignment of head-light promptly).

However, the automatic alignment mode of the headlamp is only suitable for headlamps with optical axis deviation of 0-5 degrees, and the reason is that when the optical axis deviation of the headlamp is too large, the inclination degree of the emitted light is large, and because the box body has a certain depth, the light does not reach the photosensitive element but irradiates on the side wall of the box body in many times, so that the photosensitive element takes the light intensity which is not the maximum value as the maximum light intensity, the final automatic alignment result error of the headlamp is large, and the subsequent headlamp detection is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a full-automatic headlamp detector which has a simple structure and can be used for detecting a headlamp with large optical axis deviation aiming at the prior technical situation.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a full-automatic headlamp detector, includes the detection case, its characterized in that, one side that the detection case is close to the lamp that awaits measuring be equipped with lens, one side that the detection case was kept away from to lens is equipped with the screen, the optical center of lens is equallyd divide all around and does not be equipped with detecting element, and about the detecting element at both ends and the detecting element at upper and lower both ends equallyd divide and do not be the symmetry setting for the optical center of lens, detecting element include along the anti-interference light path, light filter and the photoelectric converter that the direction of keeping away from the lamp that awaits measuring set gradually.

Preferably, the anti-interference light channel is of a hollow long cylindrical structure with a matte interior and a dark color.

Preferably, the lens is provided with a light through hole.

Preferably, a first camera for acquiring light spot information on the screen is arranged between the lens and the screen.

Preferably, the screen is a light-transmitting screen, and a second camera for acquiring light spots formed after light passes through the light-transmitting screen is arranged on one side of the light-transmitting screen, which is far away from the lens.

Preferably, the screen is a light-transmitting screen, a total reflector for reflecting light spots formed after the light rays penetrate through the light-transmitting screen is arranged on one side of the light-transmitting screen, which is far away from the lens, the total reflector gradually inclines upwards along the direction far away from the lamp to be tested, and a third camera for acquiring the light spots reflected by the total reflector is arranged above the total reflector.

Preferably, there are 4 detection units, and 1 detection unit is respectively distributed above, below, to the left and to the right of the optical center of the lens.

Preferably, the lens is a flat fresnel lens.

The utility model has the beneficial effects that:

the utility model leads the detection unit group, effectively avoids the problem that the light axis deviation of the lamp to be detected is too large and is easy to be shot to the side wall of the detection box in the prior art, and simultaneously, the anti-interference light channel and the light filter are arranged in front of the photoelectric converter of each detection unit, so that the photoelectric converter can be prevented from being interfered by various ambient lights.

Drawings

FIG. 1 is a schematic structural diagram of the detection box of the present invention.

FIG. 2 is another schematic view of the detection box of the present invention.

FIG. 3 is another schematic view of the detection box of the present invention.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

example 1

Referring to fig. 1, the present invention discloses a full-automatic headlamp detector, which comprises a detection box 1, a lens 2 is disposed on one side of the detection box 1 close to a lamp to be detected, in this embodiment, the lens 2 is a flat fresnel lens 2, a screen 3 is disposed on one side of the lens 2 away from the detection box 1, the screen 3 is disposed at a focal position of the lens 2 and is parallel to the lens 2, the screen 3 is a light-colored flat plate with a matte surface for imaging, detection units 4 are respectively disposed around an optical center of the lens 2, the detection units 4 at left and right ends and the detection units 4 at upper and lower ends are respectively disposed symmetrically with respect to the optical center of the lens 2, so as to ensure that light receiving conditions of the photoelectric converters 43 are consistent, the detection units 4 comprise an anti-interference light path 41, a light filter 42 and a photoelectric converter 43 which are sequentially disposed along a direction away from the lamp to be detected, the anti-interference light path 41, the optical filter 42 and the photoelectric converter 43 are arranged along the same axis, the anti-interference light path 41 has a certain length, the length should be in a range such that, in an ideal measurement situation, when the vehicle headlamp is centered on the optical center of the lens 2, under the state that the optical axis irradiated by the headlamp is maximally deviated in the range, the detection units 4 at the left end and the right end and the detection units 4 at the upper end and the lower end can respectively receive two groups of effective signals with small deviation, wherein, the deviation value determined as effective can be determined according to the practical machine experiment, so as to ensure that the photoelectric converter 43 can receive the light signal of the car lamp when detecting the deviation of the optical axis of the lamp to be measured in the maximum measurement range, and can shield other surrounding light rays for a long enough time so as not to cause errors, the optical filter 42 can filter out stray light, the result detected by the photoelectric converter 43 is more accurate through the anti-interference light path 41 and the optical filter 42.

In the utility model, one side of a detection box 1 close to a lamp to be detected is provided with a detection unit 4 group, the detection unit 4 group is composed of at least 4 detection units 4 which are symmetrically distributed around the optical center of a lens 2, in the embodiment, the number of the detection units is 4, the upper end and the lower end of the optical center of the lens 2 are respectively and symmetrically distributed with 1 detection unit 4, the left end and the right end of the optical center of the lens 2 are respectively and symmetrically distributed with 1 detection unit 4, when the alignment operation of the headlamp is carried out, the relative position of the optical center of the lens 2 and the brightness center of the lamp to be detected can be calculated according to the light intensity data of a photoelectric converter 43 corresponding to the 4 detection units 4, and a detector can move and adjust the detection box 1 according to the data, so that the center of the detection box 1 and the center of the headlamp are automatically aligned, thereby completing the automatic alignment of the headlamp.

The detection units 4 are arranged in the front, so that the problem that the light to be detected easily irradiates the side wall of the detection box 1 due to overlarge optical axis deviation in the prior art is effectively solved, meanwhile, the anti-interference light channel 41 and the light filter 42 are arranged in front of the photoelectric converter 43 of each detection unit 4, so that the photoelectric converter 43 can be prevented from being interfered by various ambient lights, the structure of the automatic alignment device is simple, the automatic alignment device can be suitable for the headlamp with a larger optical axis deviation range, the application range is wide, the detection result of the detection unit 4 is more accurate, and further the automatic alignment of the headlamp is more accurate.

In a preferred embodiment of the present invention, the anti-interference light path 41 is a hollow long cylindrical structure with a matte interior and a dark color.

In a preferred embodiment of the present invention, the lens 2 is provided with a light-passing hole 21, and when the lens 2 blocks the anti-interference light path 41, the light-passing hole 21 is opened at a position corresponding to the lens 2, so as to avoid blocking of light by the lens 2 and ensure that the light receiving conditions of the 4 photoelectric converters 43 are consistent.

Example 2

Referring to fig. 1, the present embodiment is different from embodiment 1 in that a first camera 5 for acquiring light spot information on a screen 3 is disposed between a lens 2 and the screen 3, the first camera 5 is installed at a position where the whole screen 3 can be photographed without obstructing a vehicle lamp from projecting light, after the alignment operation of the headlamp according to embodiment 1, relevant parameters of the headlamp can be detected, specifically, the first camera 5 can photograph light spots projected on the screen 3 after the headlamp is focused by the lens 2, so that various parameters of the vehicle lamp, including a light type and a light intensity, can be calculated, and the parameters are sent to a controller of a detector for analysis processing.

Example 3

Referring to fig. 2, the difference between the present embodiment and embodiment 1 is that the screen 3 is a light-permeable transparent screen, the light-permeable screen has a certain light transmittance, and a second camera 6 for acquiring light spots formed after light passes through the light-permeable screen is disposed on a side of the light-permeable screen away from the lens 2, and after the alignment operation of the headlamp is performed according to embodiment 1, the light spots passing through the light-permeable screen are photographed by the second camera 6 to detect the parameters of the vehicle lamp.

Example 4

Referring to fig. 3, the difference between the present embodiment and embodiment 1 is that the screen 3 is a transparent screen, and a side of the transparent screen, which is away from the lens 2, is provided with a total reflector 8 for reflecting light spots formed after light passes through the transparent screen, the total reflector 8 gradually tilts upward along a direction away from the lamp to be tested, and a third camera 7 for acquiring the light spots reflected by the total reflector 8 is arranged above the total reflector 8, and after the headlamp alignment operation is performed according to embodiment 1, the third camera 7 detects the parameters of the vehicle lamp by shooting the light spots of the transparent screen reflected by the total reflector 8.

Finally, it should also be noted that, although the present invention has been described in the specification and illustrated in the accompanying drawings with reference to various embodiments, it will be understood by those skilled in the art that the above-described embodiments are merely preferred embodiments, and that certain technical features of the embodiments may not be necessary to solve a particular technical problem, so that these technical features may be omitted or omitted without affecting the solution of the technical problem or the formation of the technical solution; furthermore, the features, elements, and/or functions of one embodiment may be combined, coupled, or coordinated with the features, elements, and/or functions of one or more other embodiments as appropriate, unless the combination, coupling, or coordination is clearly not practical.

Claims (8)

1. The utility model provides a full-automatic headlamp detector, includes the detection case, its characterized in that, one side that the detection case is close to the lamp that awaits measuring be equipped with lens, one side that the detection case was kept away from to lens is equipped with the screen, the optical center of lens is equallyd divide all around and does not be equipped with detecting element, and about the detecting element at both ends and the detecting element at upper and lower both ends equallyd divide and do not be the symmetry setting for the optical center of lens, detecting element include along the anti-interference light path, light filter and the photoelectric converter that the direction of keeping away from the lamp that awaits measuring set gradually.

2. The automatic headlamp detector according to claim 1, wherein the anti-interference light path has a hollow long cylindrical structure with a matte interior and a dark color.

3. The automatic headlamp tester as claimed in claim 2, wherein the lens has a light passing hole.

4. The automatic headlamp detector according to any one of claims 1 to 3, wherein a first camera for acquiring spot information on the screen is disposed between the lens and the screen.

5. The automatic headlamp detector according to any one of claims 1 to 3, wherein the screen is a light-permeable screen, and a second camera for capturing light spots formed after light passes through the light-permeable screen is disposed on a side of the light-permeable screen away from the lens.

6. The automatic headlamp detector according to any one of claims 1 to 3, wherein the screen is a transparent screen, and a side of the transparent screen away from the lens is provided with a total reflector for reflecting light spots formed after the light passes through the transparent screen, the total reflector is gradually tilted upwards along a direction away from the lamp to be detected, and a third camera for acquiring the light spots reflected by the total reflector is arranged above the total reflector.

7. The automatic headlamp detector according to claim 1, wherein the number of the detecting units is 4, and 1 detecting unit is respectively distributed above, below, on the left and on the right of the optical center of the lens.

8. The automatic headlamp detector as claimed in any one of claims 1 to 3, wherein the lens is a flat Fresnel lens.

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