Three-dimensional medical imaging apparatus
AssigneeOlympus Corporation
InventorsYasushi Namii, Kenji Hirose, Koji Yasunaga
Life of this patent
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Abstract
By adding perspective information in addition to binocular parallax, the invention provides a three-dimensional medical imaging apparatus that allows surgery to be performed with a more natural three-dimensional view, similar to that achieved with the naked eye. The three-dimensional medical imaging apparatus includes an image-acquisition optical system and an imaging device for acquiring three-dimensional images of a subject. The image-acquisition optical system includes an objective optical system for forming an image of the subject at an image-forming plane, and an entrance pupil position of the image-acquisition optical system is disposed between the objective optical system and the subject.
Claims23
A three-dimensional medical imaging apparatus for acquiring three-dimensional images of a subject, comprising:
- an image-acquisition optical system;
- and
- an imaging device,
- wherein the image-acquisition optical system includes an objective optical system for forming an image of the subject on an image-forming surface, and
- an entrance pupil position of the image-acquisition optical system is disposed between the objective optical system and the subject.
A three-dimensional medical imaging apparatus for acquiring three-dimensional images of a subject, comprising:
- an image-acquisition optical system;
- and
- an imaging device,
- wherein the image-acquisition optical system includes an objective optical system for forming an image of the subject at an image-forming plane and a relay optical system for conveying the image formed by the objective optical system to the vicinity of an image-acquisition surface of the imaging device;
- and
- the objective optical system is disposed between a pupil position set in the relay optical system and a conjugate position thereof.
A three-dimensional medical imaging apparatus for acquiring three-dimensional images of a subject, comprising:
- an image-acquisition optical system;
- and
- an imaging device,
- wherein conditional expressions (1) and (2) are satisfied
- 100≦WD≦500 (1)
- 9°≦2θ≦45° (2)
- where WD is the working distance of the three-dimensional medical imaging apparatus in millimeters and θ is the half field angle of the image-acquisition optical system.
A three-dimensional medical imaging apparatus for acquiring three-dimensional images of a subject, comprising:
- an image-acquisition optical system;
- and
- an imaging device,
- wherein the image acquisition optical system includes
- an objective optical system for forming an image of the subject at an image-forming plane, and
- a variable-magnification optical system for adjusting the size of an image of the subject acquired by the imaging device, and
- within a range of magnifications that can be varied by the variable-magnification optical system, when at least one magnification is set, conditional expressions (1) and (2) are satisfied
- 100≦WD≦500 (1)
- 9°≦2θ≦45° (2)
- where WD is the working distance of the three-dimensional medical imaging apparatus in millimeters, and θ is the half field angle of the image-acquisition optical system.
A three-dimensional medical imaging apparatus for acquiring three-dimensional images of a subject, comprising
- a pair of left and right imaging units, each imaging unit including an image-acquisition optical system and an imaging device,
- wherein the central axes of the left and right image-acquisition optical systems are disposed in parallel, and
- the left and right imaging devices are decentered with respect to the central axes the respective image-acquisition optical systems in directions such that the left and right imaging devices move away from each other.
A three-dimensional medical observation apparatus comprising a three dimensional imaging apparatus, having an image-acquisition optical system for acquiring three-dimensional images of a subject and an imaging device, and a three-dimensional display device for displaying images acquired by the three dimensional imaging apparatus, the three dimensional observation apparatus satisfying conditional expressions (11) and (12) below,
- wherein, when converting the size of an image of the subject displayed on the three-dimensional display device to the field of view on the surface of the subject in the in-focus region of the image-acquisition optical system, conditional expression (13) below is satisfied
- 100≦WD≦500 (11)
- 9°≦2θ≦45° (12)
- 5≦r≦200 (13)
- where WD is the working distance in millimeters of the three-dimensional imaging apparatus, θ is the half field angle of the image-acquisition optical system, and r is the size in millimeters of the field of view of the image-acquisition optical system.
Dependencies are inferred from the claim text.