Title:
ENDOSCOPE IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/072427
Kind Code:
A1
Abstract:
The present invention effects increased compactness of a device by acquiring a plurality of images in parallel without shifting microlenses (ML) of an imaging element, and suppresses crosstalk and shading. This endoscope imaging device is provided with an objective optical system (2) that forms two subject images in parallel, and an imaging element (4) that has a plurality of MLs arrayed at the entrance side from the objective optical system and in which a pixel is allocated to each ML, the centers of the respective photosensitive sections of the pixels are displaced in a manner so as to become gradually larger at the peripheral section from the center of the imaging element with respect to the ML optical axis, the exit pupil position of the objective optical system is at the object side of the image formation position of the objective optical system, and the endoscope imaging device satisfies conditional formula (1): 0.5 ≤ (θH-θD)/α ≤ 3 (1) (where α is the angle formed by the optical axis of the primary light beam at the height of the greatest image in the horizontal direction, θH is the primary light beam correction amount (angle) of the ML corresponding to the position of the greatest height (H) in the horizontal direction from the center of the imaging element, and θD is the primary light beam correction amount (angle) of the ML on the distance (D) from the center of the imaging element. The distance (D) is the distance to the center of the imaging element of the point of intersection of the imaging element and a line drawn from the exit pupil position of the objective optical system and the center of the α degree portion of the imaging element).
Inventors:
NAMII YASUSHI (JP)
NAGAOKA HIDEYUKI (JP)
NAGAOKA HIDEYUKI (JP)
Application Number:
PCT/JP2014/079736
Publication Date:
May 21, 2015
Filing Date:
November 10, 2014
Export Citation:
Assignee:
OLYMPUS MEDICAL SYSTEMS CORP (JP)
International Classes:
G02B23/26; A61B1/00; G02B3/00; G02B13/00; G03B15/00; G03B35/08
Foreign References:
| JPH10239594A | 1998-09-11 | |||
| JP2010056345A | 2010-03-11 | |||
| JPH05346556A | 1993-12-27 | |||
| JPH05346556A | 1993-12-27 | |||
| JP2010056345A | 2010-03-11 | |||
| JPH0454094B2 | 1992-08-28 |
Other References:
See also references of EP 3070507A4
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
Ueda Kunio (JP)
Ueda Kunio (JP)
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