Disclosed herein are devices and methods for generating stereoscopic views of the eye (or any desired anatomic structure) using a dual-camera portable computing device. The locations of the two cameras are fixed, and the camera lenses may have different focal lengths. For example, the focal length of the second camera lens may be longer than the focal length of the first camera lens. One variation of a detachable imaging system comprises an objective lens and a relay lens that are disposed over the two cameras. The relay lens may be disposed over the first and second cameras, and have a focal length that is greater than the focal length of the first camera lens and less than or equal to the focal length of the second camera lens.

Examples described herein relate to an imaging device. For instance, the imaging device can comprise a plurality of lenses to receive light, a reflector to transmit the light from the plurality of lenses through a shaft, a mirror to receive the light transmitted by the reflector and reflect the light into a sensor, a motor to rotate the mirror to allow the mirror to channel light into the sensor, the sensor to a set of frames of image data based on the light received from the mirror, and a processing resource to synchronize a motor speed based on the set of frames.

Examples described herein relate to an imaging device. For instance, the imaging device can comprise a plurality of lenses to receive light, a reflector to transmit the light from the plurality of lenses through a shaft, a mirror to receive the light transmitted by the reflector and reflect the light into a sensor, a motor to rotate the mirror to allow the mirror to channel light into the sensor, the sensor to a set of frames of image data based on the light received from the mirror, and a processing resource to synchronize a motor speed based on the set of frames.

An image display apparatus according to the present invention includes an image light generator (100) that emits image light, a first reflection element (11) that the image light from the image light generator (100) is to enter, the first reflection element (11) having a transmitting action and a reflecting action on the image light, a second reflection element (12) that reflects, toward the first reflection element (11), the image light that has entered via the first reflection element (11) and causes the image light to re-enter the first reflection element (11), the second reflection element (12) having a reflecting action on the image light, a light-condensing optical system (20) that converges, toward a position of a pupil of an observer, the image light that has re-entered the first reflection element (11), and a controller (40) that controls a placement angle of the first reflection element (11), the second reflection element (12), or both on the basis of the position of the pupil of the observer.

An image display apparatus according to the present invention includes an image light generator (100) that emits image light, a first reflection element (11) that the image light from the image light generator (100) is to enter, the first reflection element (11) having a transmitting action and a reflecting action on the image light, a second reflection element (12) that reflects, toward the first reflection element (11), the image light that has entered via the first reflection element (11) and causes the image light to re-enter the first reflection element (11), the second reflection element (12) having a reflecting action on the image light, a light-condensing optical system (20) that converges, toward a position of a pupil of an observer, the image light that has re-entered the first reflection element (11), and a controller (40) that controls a placement angle of the first reflection element (11), the second reflection element (12), or both on the basis of the position of the pupil of the observer.

A system for capturing horizontal disparity stereo panorama is disclosed. The system includes a multi surface selective light reflector unit, a secondary reflector and a computing unit. The multi surface selective light reflector unit (a) obtains light rays from a 3D scene of outside world that are relevant to create (i) a left eye panorama and (ii) a right eye panorama and (b) reflects the light rays without internal reflections between the light rays. The secondary reflector (a) obtains the reflected light rays from the multi surface selective light reflector unit and (b) reflects the light rays through the viewing aperture. The computing unit captures (i) the reflected light rays from the secondary reflector and (ii) the upper part of the 3D scene from a concave lens as a warped image and processes the warped image to (a) the left eye panorama and (b) the right eye panorama.

A camera monitoring system for a bore based medical apparatus is described, wherein the camera monitoring system comprises a first and a second image sensor mounted on opposing surfaces of a circuit board. The first image sensor is arranged to view an object from a first viewpoint via a first lens arrangement and a first mirror and the second image sensor is arranged to view the object from a second viewpoint via a second lens arrangement and a second mirror. By having the image sensors view an object via the mirrors, via the lens arrangements, the lens arrangements contribute to the effective separation of the first and second viewpoints enabling the size of the housing of the camera to be reduced. Furthermore, a method for calibrating a camera monitoring system in a bore based setup is described and also a configuration of arranging a camera monitoring system in connection with a bore based medical apparatus.

A camera monitoring system for a bore based medical apparatus is described, wherein the camera monitoring system comprises a first and a second image sensor mounted on opposing surfaces of a circuit board. The first image sensor is arranged to view an object from a first viewpoint via a first lens arrangement and a first mirror and the second image sensor is arranged to view the object from a second viewpoint via a second lens arrangement and a second mirror. By having the image sensors view an object via the mirrors, via the lens arrangements, the lens arrangements contribute to the effective separation of the first and second viewpoints enabling the size of the housing of the camera to be reduced. Furthermore, a method for calibrating a camera monitoring system in a bore based setup is described and also a configuration of arranging a camera monitoring system in connection with a bore based medical apparatus.

A blended optical device includes a first objective with a first axis and a first image position adjustment means for adjusting the position of a first image. An electronic control circuitry is configured to control the first adjustment means to adjust a position of the first image. A second objective includes a second axis and a variable focus mechanism, and a blender configured to form a blended image from the first image and a second image. The electronic control circuitry is configured to receive data from the second objective regarding a range to a target of the second objective as a function of the focus setting, and to adjust the position of the first image so that the blended image is corrected for parallax errors.

An imaging device includes a varifocal lens and an imaging sensor which outputs a signal corresponding to light. The imaging sensor includes a photoelectric conversion unit which converts light into an electric charge, electric charge reading regions, transfer control electrodes, a gate control circuit which sequentially applies control signals to the transfer control electrodes to correspond to the position of the focal point of the varifocal lens, and a reading circuit which outputs a signal corresponding to the amount of the electric charge transferred to the electric charge reading regions. The gate control circuit repeats an operation of outputting each of the control signals when the position of the focal point is located in the focal ranges during a frame period.