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Visual measurement method and device

A technology for visual measurement and products to be tested, applied in the field of visual measurement, can solve the problems of manufacturing difficulty, manufacturing accuracy, manufacturing cost, and increase in equipment volume, and achieve the effects of easy implementation, high detection efficiency, and low system construction cost.

Pending Publication Date: 2020-01-10
西咸新区西普智能科技有限公司
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Problems solved by technology

[0004] To sum up, the problems existing in the prior art are: as the size of the telecentric lens increases, the manufacturing difficulty, manufacturing accuracy, manufacturing cost, and equipment volume will increase significantly

Method used

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  • Visual measurement method and device

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Embodiment Construction

[0028] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.

[0029] Aiming at the problems existing in the prior art, the present invention provides a visual measurement method and device, the following in conjunction with the attached Figures 2 to 5 The present invention is described in detail.

[0030] The visual measurement method and device include a telecentric lighting source, the telecentric lighting source is used to generate parallel lighting beams; a projection screen, the front of the projection screen is used to receive the contour projection generated after the telecentric lighting source irradiates the part; The lens is used for converging the projection of the object outline on the projection screen onto the target surface of the camera; the camera is fixedly installed on the back of the projection scree...

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Abstract

The invention belongs to the technical field of vision measurement, and discloses a vision measurement method and device. The device comprises a parallel light source which generates parallel light beams after passing through a group of optical lenses through a point light source; a to-be-measured product which is placed in a flatness range irradiated by the parallel light beams; a projection screen, wherein the front surface of the projection screen receives contour projection generated after the parallel light source irradiates the part; a lens which is used for projecting and converging theoutline of an object on the projection screen onto the target surface of a camera; and the camera which is fixedly arranged on the back surface of the projection screen, and converts the image into digital information to be processed by a computer. The visual measurement method and device for object contour measurement have the advantages of high detection efficiency, large detection range, low system construction cost and easy implementation.

Description

technical field [0001] The invention belongs to the technical field of visual measurement, and in particular relates to a visual measurement method and device. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: In recent years, with the continuous upgrading of the industry, industrial production has higher and higher requirements for product quality, and higher requirements for product size and surface smoothness have been put forward. As a non-contact rapid measurement method, visual measurement has been widely used in industrial production and detection because it can directly detect samples. [0003] At present, most high-precision visual measurement equipment on the market adopts telecentric optical system, such as attached figure 1 As shown in the figure, the collimated parallel light beam is provided by the telecentric light source to irradiate the part, and the outline of the part is projected to the oppo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
CPCG01B11/2433
Inventor 武杰杰刘志强
Owner 西咸新区西普智能科技有限公司
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