Three-dimensional topography mark comparison measuring instrument

A technology of three-dimensional shape and measuring instrument, which is applied in the direction of measuring devices, instruments, and optical devices, etc., can solve the problem of low adjustment accuracy, and achieve the effects of adjustable resolution, variable field of view, and stable performance

Inactive Publication Date: 2012-08-01
安徽国盾三维高科技有限公司
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a three-dimensional shape trace comparison measure...

Method used

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  • Three-dimensional topography mark comparison measuring instrument
  • Three-dimensional topography mark comparison measuring instrument
  • Three-dimensional topography mark comparison measuring instrument

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing:

[0031] like figure 1 , is a kind of three-dimensional shape trace contrast measuring instrument provided by the present invention, comprises base 1, column 2, microscopic camera 3, projector 4, cloud platform 5, and the above-mentioned five parts are described in detail below respectively:

[0032] a. The base 1 has a clear structure and no further explanation is needed;

[0033] b. The column 2 is arranged on the rear side of the upper plane of the base. The column is provided with a quick lifting device 2a, and the quick lifting device 2a is connected with a fine-tuning lifting device 2b.

[0034] see figure 2 , the fast lifting device 2a includes: a stepping screw 202 arranged in the inner cavity of the column 2, the upper end of the stepping screw 202 is connected with a stepping motor 201 arranged above the column, and the stepping screw 202 is connected to the second ...

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Abstract

The invention relates to a non-contact metering device of object surface topography reconstruction, in particular to a three-dimensional topography mark comparison measuring instrument for criminal investigation evidence such as bullets and tool marks identification. The comparison measuring instrument comprises a base (1), an upright column (2), a cradle head (5), a microscope camera (3) and a microscopic projector (4). The comparison measuring instrument provided by the invention has the advantages that the field of vision is variable through performing non-contact measurement to an observed sample; the resolution is adjustable; an electrically and manually combined multi-dimensional focusing cradle head and multiple clamps are adopted, so that the requirements of clamping and adjusting measurement posture of various detecting materials are satisfied; the structure is reasonable, the performance is stable and the operation is simple and convenient.

Description

technical field [0001] The invention relates to a non-contact measuring device for object surface topography reconstruction, in particular to a three-dimensional topography trace comparison measuring instrument for forensic evidence such as bullets and tool trace identification. Background technique [0002] At present, the comparison and detection of forensic evidence, such as bullet bullets, shell casings, and traces of tool lines, is still in the state of storing and analyzing physical samples, and the detection of trace information still stays in the direct observation of two-dimensional with a single instrument. At the technical level of image comparison, it is impossible to solve the problem of precise positioning and measurement in three-dimensional space object shape technology and trace comparison technology. [0003] In recent years, with the maturity and development of the non-contact detection technology that was originally mainly used for the reconstruction of t...

Claims

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Application Information

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IPC IPC(8): G01B11/24
Inventor 严继华路振涛孟凡忠梁玉清
Owner 安徽国盾三维高科技有限公司
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