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Body surface three-dimensional topographic information measuring device

A three-dimensional shape and information measurement technology, applied in the direction of measuring devices, optical devices, instruments, etc., to achieve the effects of convenient focusing, clear imaging, and small errors

Inactive Publication Date: 2007-01-03
XIAMEN UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of using the existing laser triangulation method to measure the three-dimensional shape information of the surface of the object, to provide a concept based on non-diffracted light, and to use the new laser triangulation method to solve the problem of measuring the inclination of the measured object surface. The problems brought about by the three-dimensional shape information measurement device of the object surface using a single beam and a single photodetector device

Method used

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Embodiment 1

[0028] The optical system structure of embodiment 1 can refer to figure 1 After the beam emitted by the laser 1 is collimated by the collimating optical system 2, the beam is coupled into the rotating prism 4 and the rotating prism 5 by the isosceles rectangular prism 3 to form a non-diffracting light that is perpendicular to the surface 7 of the measured object, and the measured object The surface 7 produces diffuse reflection, and the diffuse reflection light is reflected by the hollow spherical reflector 6 whose inner side is the reflective surface and then enters the rotating prism 4 to be imaged on the photodetector array 8 . Wherein, the rotating prism 4 and the rotating prism 5 can be made up of the bottom part of the rotating conical prism cut by the same rotating conical prism along the direction (transverse direction) perpendicular to the central axis and the top part of the flip chip respectively, and the top of the rotating conical prism is the rotating The prism ...

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Abstract

Object surface three-dimensional morphology communication measuring equipment relates to a kind of geometry value equipment, especially to a kind of equipment to measure the three-dimensional morphology communication to object surface. It adopts single beam of light, single photoelectric measuring parts of an apparatus to solve the measuring problem about the slope of the object surface, offering one concept based on non-diffract light and using one new laser triangular surveying method. It relates to laser, collimating optics system, constant waist right-angle prism, two eddy prisms, circularity inner-reflector and photoelectric detector array. The collimating optics system sets in front of the single beam of light coming from the laser. The right-angle part of the constant waist right-angle prism aims at the incidence aspect of the collimated single beam of light. The center axes of the two eddy prisms are the same axes. The center of ball and symmetry axes to the circularity inner-reflector is on the center axes of the eddy taper prisms. The photoelectric detector array sets on the imaging base point of the eddy taper prisms.

Description

technical field [0001] The invention relates to a device for measuring geometric quantities, in particular to a device for measuring three-dimensional shape information on the surface of an object. Background technique [0002] Since laser triangulation has the characteristics of non-contact, not easy to damage the surface, wide material adaptability, simple structure, strong anti-interference ability, small measurement point, high measurement accuracy and can be used for real-time online rapid measurement, it is widely used in the field of geometric measurement It has been widely used, and people have been exploring to enrich and perfect it with the most modern science and technology, and strive to further simplify the structure, improve accuracy, broaden the scope of application, and meet the needs of industrial production. [0003] The laser triangulation method is divided into reflection type and transmission type according to the detection method, and is divided into di...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/00
Inventor 黄元庆万瑾颜黄苹
Owner XIAMEN UNIV
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