34 results about "Polarized light imaging" patented technology

An imaging device includes a photographing lens configured to focus light from a subject, a splitter configured to split the focused light to left and right in an area, in which light diffused from one point of the subject becomes parallel light, so as to respectively form different polarized lights, an imaging lens configured to respectively image the split different polarized lights, a transmission unit configured to receive the imaged different polarized lights on the same plane so as to transmit any one of the polarized lights in each area of the plane, an imaging element configured to convert the transmitted light on the plane into an image according to an electronic signal, and an image generating unit configured to extract and interpolate the converted image in each area so as to generate two different images.

The invention discloses a method for calculating the energy of a polarized light imaging system under complex weather, belonging to the field of optical detection theory research, including determining polarized light imaging conditions and environmental conditions, target and detector parameters under complex weather; calculating solar radiation energy in the detector The irradiance to the target in the response band; use the 6S atmospheric radiation transfer model to determine the polarized reflectance of the target; obtain the brightness of the target’s indirect radiation; use Modtran4.0 software to determine the average transmittance of the detector in the response band; use zemax software to determine The transmittance of the optical system; obtain the central illuminance of the detector image plane, the light energy at the entrance pupil of the optical system, the number of electrons generated by the target on the detector, the total noise of the system and the signal-to-noise ratio; use Matlab / VC++ programming software, according to the above The software is compiled during the process, and the analysis and optimization iterations are carried out; finally, a polarized light imaging system that meets the energy requirements and signal-to-noise ratio requirements is formed.

The invention provides an orthogonal polarized light imaging diffractive optical device based on a super-structure surface. The orthogonal polarized light imaging diffractive optical device is composed of a substrate and sub-wavelength optical antennas arranged on a surface of the substrate in an array mode, wherein the sub-wavelength optical antenna array is a two-dimensional array, directions parallel to the row and the column of the sub-wavelength optical antenna array are used as an x axis and a y axis respectively, the cross section shape of each optical antenna along the xy plane has C2symmetry, the length and the width of each optical antenna are respectively 1 / 20 to 1 / 2 of the working wavelength, the heights of the optical antennas are equal and are in a sub-wavelength range, anda center distance between two adjacent optical antennas is equal and does not exceed half of the working wavelength; the transmission phase is applied to the orthogonal linearly polarized light by designing the length and width of each optical antenna, and the transmission phase and the geometric phase are simultaneously applied to the orthogonal circularly polarized light by designing the lengthand width and the rotation angle of each optical antenna. The orthogonal polarized light imaging diffractive optical device is advantaged in that simultaneous focusing imaging of different positions of the orthogonal polarized light can be realized by using one unit structure.