LENS DEVICE, IMAGING APPARATUS, COMMUNICATION METHOD, AND PROGRAM

• Main Authors: INAGAKI MASARU, MIZUNO NOBUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2021
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS

To provide a lens device capable of calculating a defocus conversion factor without increasing the storage capacity and calculation time.SOLUTION: A lens device (100) attachable to/detachable from an imaging apparatus (120), includes: an imaging optical system that has a transmittance distribution layer (105) rotationally symmetric with respect to the optical axis; storage means (118) that stores aperture information of the imaging optical system; and communication means (117) that transmits the aperture information to the imaging apparatus. The aperture information includes first aperture information relevant to the length of baseline of the imaging optical system that has the transmittance distribution layer.SELECTED DRAWING: Figure 1 【課題】記憶容量および演算時間を増やすことなく、デフォーカス換算係数を算出可能なレンズ装置を提供する。【解決手段】撮像装置（１２０）に着脱可能なレンズ装置（１００）であって、光軸に関して回転対称な透過率分布層（１０５）を有する撮像光学系と、撮像光学系の開口情報を記憶する記憶手段（１１８）と、開口情報を撮像装置に送信する通信手段（１１７）とを有し、開口情報は、透過率分布層を有する撮像光学系の基線長に関する第１開口情報を含む。【選択図】図１