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第2の位相差
第2位相差
A digital phase comparator can be provided which uses the first and second phase difference signals as digital phase difference information.
According to the present invention, image data using pixel lines including first and second phase difference pixels is included in colour images for video including live view display.
Furthermore, the optical hybrid (100) generates a second optical signal by causing the local light to interfere with the received optical signal at a second phase difference which is offset from the first phase difference by π.
The pixel value of a second interpolation pixel (58b) in the middle position of the second phase difference pixel (36b) of each sequence pattern (42, 43) on a same-pixel line in the diagonal direction is calculated by interpolation processing.
According to the present invention, first and second phase difference pixels are arrayed on pixel lines in a colour image in a first direction, said colour image being decimated during imaging of video including live view display.
In a prescribed area of the image pickup element where the pixels are to be arranged, when arranging, of these pixels, a plurality of pixel pairs (XY) each of which comprises first and second phase difference detection pixels that detect a phase difference and are arranged adjacent to each other, on any one line among the above-mentioned lines (first line) and on a line that is parallel to the first line (second line) with a pixel pair as a unit, a plurality of pixel pairs are arranged on the first line such that the pairs are spaced apart by at least two pixels and are arranged on the second line at positions corresponding to the spacing between the pixel pairs on the first line.
A digital phase difference detection device is equipped with: a delay circuit (10) that cumulatively delays first signals and generates signals for each delay amount; a flip-flop group (20) that latches the delay amount signal in synchronization with a second signal; an edge detector (30) that, in response to the output from the flip-flop group, detects a first phase difference between the rise of the first signal and either the rise or fall of the second signal, and detects a second phase difference between the fall of the first signal and either the rise or fall of the second signal; a storage circuit (40) that stores the first and second phase differences; and a normalization circuit (50) that calculates the period of the first signal from the difference between past first and second phase differences stored in the storage circuit and the difference between first and second phase differences newly detected by the edge detector, and normalizes the phase difference of the first and second signals on the basis of the period of the first signal.
This parallax information generation unit generates parallax information, using a first parallax image and a second parallax image as the targets therefor, and on the basis of a first phase difference distribution generated in pixel units and a second phase difference distribution generated in sub-pixel units on the basis of the first phase difference distribution.
Furthermore, the colour images for video not only include image data for pixel lines including first and second phase difference pixels, but also include image data for pixel lines including only normal pixels, i.e. pixel lines not including first and second phase difference pixels.
Further, if the phase difference is between the first phase difference threshold and the second phase difference threshold, the control device finds the resonance frequency of a working device by multiplying a chatter frequency by a correction factor that changes according to the chatter frequency, and calculates the number of rotations of the end mill on the basis of the resonance frequency.
The pattern phase difference plate has at least a support body and a pattern optical anisotropic layer having a first phase difference region and a second phase difference region disposed on the support body alternately in a striped manner and in which at least either an in-plane retardation axis direction or a phase difference is mutually different.
The first phase difference introduced structure and the second phase difference introduced structure have a structure wherein diffracted light fluxes of all the three light fluxes are projected or a structure wherein undiffracted transmitting light fluxes of all the three light fluxes are projected, when the light fluxes having three different wavelengths enter each of the structure.
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Synoniemen voor second phase difference in het Engels