US 11,747,641 B2
Imaging apparatus with cylindrical lenses
Takeshi Shimano, Tokyo (JP)
Assigned to MAXELL, LTD., Kyoto (JP)
Filed by MAXELL, LTD., Kyoto (JP)
Filed on Apr. 26, 2022, as Appl. No. 17/729,519.
Application 17/729,519 is a continuation of application No. 17/154,079, filed on Jan. 21, 2021, granted, now 11,347,072.
Application 17/154,079 is a continuation of application No. 16/535,493, filed on Aug. 8, 2019, granted, now 10,928,641, issued on Feb. 23, 2021.
Application 16/535,493 is a continuation of application No. 15/580,039, granted, now 10,423,002, issued on Sep. 24, 2019, previously published as PCT/JP2015/067454, filed on Jun. 17, 2015.
Prior Publication US 2022/0260846 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/42 (2006.01); G03B 15/00 (2021.01); G03B 41/00 (2021.01); H04N 23/60 (2023.01); H04N 25/00 (2023.01); G02B 5/18 (2006.01)
CPC G02B 27/4205 (2013.01) [G02B 5/1823 (2013.01); G02B 27/4272 (2013.01); G03B 15/00 (2013.01); G03B 41/00 (2013.01); H04N 23/60 (2023.01); H04N 25/00 (2023.01)] 5 Claims
OG exemplary drawing
 
1. A imaging apparatus comprising:
an image sensor configured to convert light received by a plurality of pixels arranged in an array on a light receiving surface into an electrical signal and output the electrical signal;
an optical element arranged on a side closer to the light receiving surface of the image sensor and being configured to transmit the light; and
an image processing circuitry configured to perform image processing of the electrical signal output from the image sensor,
wherein a plurality of concentric cylindrical lenses are formed on one surface of the optical element, and each lens of the plurality of concentric cylindrical lenses is formed with a cylindrical surface, and each lens has a curvature of a convex lens in the vertical direction of the optical element and no curvature in the horizontal direction of the optical element, and the plurality of concentric cylindrical lenses are configured to concentrate incident light,
wherein the image sensor receives the light concentrated by the cylindrical lenses and outputs an image signal that includes an image gathered cylindrically, and
wherein the image processing circuitry is configured to:
input the image signal that includes the image gathered cylindrically output from the image sensor,
generate a moire fringe image when the image gathered cylindrically included in the image signal combines with another concentric image, and
perform processing including a two-dimensional Fourier transform on the moire fringe image, and generate an image.