A kind of automatic tester for vehicle headlampTechnical field
The present invention relates to automobile lamp detection technique field, specifically, particularly a kind of automatic tester for vehicle headlamp.
Background technology
When driving, automobile, owing to being vibrated, may cause the installation site change of headlamp parts, thus changes the correct direction of illumination of headlight beam and produce off-gauge smooth shape.Meanwhile, the bulb of headlamp in use can be progressively aging, and mirror surface also can be polluted and make the degradation of its optically focused, thus causes the luminance shortage of headlamp.These change all can make driver to road ahead situation identification unclear, or with opposite send a car intersection time cause the other side's glare of driver etc., thus cause traffic hazard.Therefore, the luminous intensity of headlamp and direction of illumination are the key factors affecting running safety, must periodic detection.
The dipped beam of car headlamp is asymmetric, and namely light shape is distributed with an obvious "cut-off"line.The light shape distribution with "cut-off"line causes to the other side driver when could effectively prevent from meeting at night to be dazzle the eyes.But, not only will have "cut-off"line for high-quality dipped headlights, but also it is clear to meet the boundary of light and shade cut-off region, could protect the other side driver to greatest extent like this.But current dipped headlights, due to the shape of shadow shield and the reason of installation site, although frequent existence meets the shape of light type, but although brightness is more weak than lower right in hot spot dark space, but still have that certain intensity, "cut-off"line bright band transitional zone are wider, flex point mould lake is unclear or have bright spot to occur in dark space, these impacts that some can be caused bad to the other side driver, affect the sight line of driver, thus cause traffic hazard.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provides a kind of two CCD full-automatic multi-functional automatic tester for vehicle headlamp of image based treatment technology.
The technical solution adopted for the present invention to solve the technical problems is: a kind of automatic tester for vehicle headlamp, comprises guide rail, base dolly, supporting seat, column, right guide pillar, left guide pillar, control device, display device, front Fresnel Lenses, half-reflecting half mirror, CCD camera, imaging screen, controlled casing, four-quadrant photoelectric cell, rear Fresnel Lenses and catoptron, described base dolly to be arranged on guide rail and can to move left and right on guide rail, described column is fixedly mounted on base dolly, described right guide pillar lower end and left guide pillar lower end are all arranged on base dolly, right guide pillar upper end and left guide pillar upper end are all arranged on the top of column, described supporting seat to be arranged on right guide pillar and left guide pillar and can to move up and down, described light casing is fixedly mounted on supporting seat, described display device is arranged on light casing, described control device is arranged on the top of display device, described front Fresnel Lenses is arranged on light casing, described half-reflecting half mirror, CCD camera, imaging screen, four-quadrant photoelectric cell, rear Fresnel Lenses and catoptron are all arranged in light casing, described half-reflecting half mirror be arranged on lower left side in light casing and and mirror parallel, catoptron is positioned at light casing upper left side, described CCD camera is positioned at the right side of half-reflecting half mirror, described imaging screen near light casing right flank and near bottom, described four-quadrant photoelectric cell and rear Fresnel Lenses be all positioned at catoptron right side and near top, described four-quadrant photoelectric cell is positioned at the right side of rear Fresnel Lenses.
As preferably, described front Fresnel Lenses is provided with optical filter.
As preferably, the angle of described half-reflecting half mirror and surface level is 45 °.
As preferably, described imaging screen is parallel with front Fresnel Lenses.
The present invention compared with prior art has the following advantages: except possessing the function such as deflection, dipped headlights hot spot flex point deflection, lamp high measurement of high beam light intensity, optical axis center, also there is distance headlamp and dipped headlights lighting quality measuring ability, namely there is dipped beam "cut-off"line sharpness detect and distance light hot spot Symmetry Detection two optical quality measuring abilities, be used for the quality of detection headlamp light quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present invention;
Fig. 2 is the structural representation that the present invention is subject to light box inside.
Description of reference numerals:
1-guide rail, 2-base dolly, 3-supporting seat, 4-column, the right guide pillar of 5-, the left guide pillar of 6-, 7-control device, 8-display device, Fresnel Lenses before 9-, 10-half-reflecting half mirror, 11-CCD camera, 12-imaging screen, the controlled casing of 13-, 14-four-quadrant photoelectric cell, Fresnel Lenses after 15-, 16-catoptron.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the invention is described:
As depicted in figs. 1 and 2, a kind of automatic tester for vehicle headlamp, comprises guide rail 1, base dolly 2, supporting seat 3, column 4, right guide pillar 5, left guide pillar 6, control device 7, display device 8, front Fresnel Lenses 9, half-reflecting half mirror 10, CCD camera 11, imaging screen 12, controlled casing 13, four-quadrant photoelectric cell 14, rear Fresnel Lenses 15 and catoptron 16, described base dolly 2 to be arranged on guide rail 1 and can to move left and right on guide rail 1, described column 4 is fixedly mounted on base dolly 2, described right guide pillar 5 lower end and left guide pillar 6 lower end are all arranged on base dolly 2, right guide pillar 5 and left guide pillar 6 upper end are all arranged on the top of column 4, described supporting seat 3 to be arranged on right guide pillar 5 and left guide pillar 6 and can to move up and down, described light casing 13 is fixedly mounted on supporting seat 3, described display device 8 is arranged on light casing 13, described control device 7 is arranged on the top of display device 8, described front Fresnel Lenses 9 is arranged on light casing 13, described half-reflecting half mirror 10, CCD camera 11, imaging screen 12, four-quadrant photoelectric cell 14, rear Fresnel Lenses 15 and catoptron 16 are all arranged in light casing 13, described half-reflecting half mirror 10 is arranged on lower left side in light casing 13 and parallel with catoptron 16, catoptron 16 is positioned at light casing 13 upper left side, described CCD camera 11 is positioned at the right side of half-reflecting half mirror 10, described imaging screen 12 near light casing 13 right flank and near bottom, described four-quadrant photoelectric cell 14 and rear Fresnel Lenses 15 be all positioned at catoptron 16 right side and near top, described four-quadrant photoelectric cell 14 is positioned at the right side of rear Fresnel Lenses 15.
Preferably, described front Fresnel Lenses 9 is provided with optical filter.
Preferably, described half-reflecting half mirror 10 is 45 ° with the angle of surface level.
Preferably, described imaging screen 12 is parallel with front Fresnel Lenses 9.
During detection, car headlamp distance tester 1 meter of optically focused is measured, the four-quadrant photoelectric cell 14 in column and light casing 13 and CCD camera 11 is utilized to make detector automatically enter tested headlamp light area, rear Fresnel Lenses 15 in headlamp light light casing 13 is aggregating and irradiates light sensitive component and four-quadrant photoelectric cell 14, the equilibrium principle of four-quadrant photoelectric cell 14 is relied on to realize accurate contraposition and complete luminous intensity measurement, then CCD camera 11 pairs of headlamp light spot images are utilized to gather, image processing platform in control device 7 is utilized to process headlamp light spot image and calculate, realize headlamp luminous intensity, lamp is high and far away, the measurement of each parameters such as dipped beam direction of illumination, complete the detection of luminous intensity distribution performance.After detection completes, auto-returned initial position, is shown the testing result of each index by display device 8.
By reference to the accompanying drawings the preferred embodiment for the present invention is explained in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Do not depart from the spirit and scope of the present invention and can make other changes many and remodeling.Should be appreciated that and the invention is not restricted to specific embodiment, scope of the present invention is defined by the following claims.