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High photosensitive real time polarization imaging minimal deviation array and imaging device thereof

A micro-polarization array and polarization imaging technology, applied in optics, optical components, instruments, etc., can solve problems such as polarization image errors, achieve the effects of solving saturation problems, improving light sensitivity, and high transmittance

Active Publication Date: 2016-03-30
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a micro-polarization array that realizes high-sensitivity real-time polarization imaging, so as to solve the problem in the prior art that there is a large error in the obtained polarization image due to insufficient sensitivity in low-light conditions or insufficient exposure time. The problem

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  • High photosensitive real time polarization imaging minimal deviation array and imaging device thereof
  • High photosensitive real time polarization imaging minimal deviation array and imaging device thereof
  • High photosensitive real time polarization imaging minimal deviation array and imaging device thereof

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Embodiment Construction

[0034] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0035] The invention provides a micro-polarization array for realizing high-sensitivity real-time polarization imaging, which includes a number of minimum periodic units closely arranged in sequence, and the minimum periodic unit refers to a repeating unit with the least number of pixels. As shown in Figure 1, each minimum period unit includes four units with different polarization angles, such as figure 2 As shown, the polarization units A, B, C, and D enclosed by thick solid lines represent polarization units with polarization angles of 0°, 45°, 90° and 135°, respectively. On the basis of four different angle polarizers I, the non-polarized lens II is introduced. The non-polarized lens II can ensure high transmittance of light with different polarization states.

[0036] The arrangement of the unpolarized lens II and the polarizer I in each polarization unit ...

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Abstract

The invention discloses a high photosensitive real time polarization imaging minimal deviation array and an imaging device thereof. The deviation array comprises a plurality of minimum period units which are closely arranged successively, wherein each minimum period unit includes four polarization units with different polarization angles; the four polarization angles are respectively 0DEG, 45DEG, 90DEG or 135DEG; and the lens of each polarization unit includes a plurality of polarizing films and non-polarized lenses so that the problem that in the prior art insufficient photosensibility makes the obtained polarized image have great error when the light is low or the time of exposure is not sufficient can be solved. The invention also discloses an imaging device and a combination method of pixels based on a high photosensitive real time polarization imaging minimal deviation array, and can solve the saturation problem for different types of lenses.

Description

Technical field [0001] The invention belongs to the technical field of polarization optical imaging, and relates to a micro-polarization array and an imaging device for realizing high-sensitivity real-time polarization imaging. Background technique [0002] With the development of nano-processing technology and focal plane technology, the focal plane polarization imaging device has been realized. It is currently the most advanced real-time polarization imaging device. The general focal plane polarization imaging device includes a lens, a miniature polarizer array and a CCD digital camera. Among them, the smallest periodic arrangement mode in the micro-polarizer array is a 2×2 size micro-polarizer combination. The unit group consists of 0-degree micro-polarizers, 45-degree micro-polarizers, 90-degree micro-polarizers, and 135-degree micro-polarizers. Polarizer composition. The sub-wavelength metal grating has different transmittances in the two vibration directions of the incide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/28
CPCG02B27/285
Inventor 赵永强刘吾腾李琳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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