Three-dimensional flow field image measurement device and method adopting single lens
A three-dimensional flow field and image measurement technology, which is used in measurement devices, testing of machine/structural components, fluid dynamics tests, etc. The effect of simplifying the measurement system and data processing process and reducing the cost of the system
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[0029] detailed description
[0030] Example 1 of a three-dimensional flow field image measuring device using a single lens, such as figure 1 As shown, the characteristic is that the device is composed of a polarized light source 1, a lens 2, a beam splitter 3, a first polarizer 4, a second polarizer 5, a first image sensor 6, a second image sensor 7 and a computer 8. The polarized light source 1 is placed on the flow field to be measured to illuminate the flow field through a window, the dichroic prism 3 is placed behind the lens 2, the incident surface A of the dichroic prism 3 is opposite to the lens 2, and the first exit surface B of the dichroic prism 3 The second image sensor 6 and the first image sensor 7 are respectively arranged at the same optical path distance from one side of the second exit surface C. The first polarizer 4 and the second polarizer 5 are respectively arranged on the second beam splitting prism 3 The exit surface C is between the first image sensor ...
Example Embodiment
[0045] Example 2:
[0046] For example, the first polarizer 4 and the second polarizer 5 in embodiment 1 are coated on two surfaces of the second exit surface C and the first exit surface B of the dichroic prism, such as figure 2 As shown, that is, the beam splitting prism 3, the first polarizer 4, and the second polarizer 5 in Embodiment 1 form a whole, and the measurement steps are the same as the operation process of Embodiment 1.
Example Embodiment
[0047] Example 3:
[0048] Such as image 3 As shown, the beam splitter 3, the first polarizer 4, and the second polarizer 5 in Embodiment 1 can also be replaced by a polarized beam splitter 9, and the first image sensor 6 and the second image sensor 7 have the same optical path distance. They are respectively placed on one side of the two exit surfaces of the polarization beam splitting prism 9, and the measurement steps are the same as the operation process of Embodiment 1.
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