System and method for sensor alignment. In one example, a reimaging optical system includes reimaging foreoptics positioned to receive and reimage incident electromagnetic radiation to produce an intermediate image plane and output an optical beam of the received incident electromagnetic radiation, an imaging optical apparatus positioned to receive the optical beam and focus the electromagnetic radiation of the optical beam onto a first focal plane, a first imaging sensor positioned at the first focal plane and configured to produce a first image responsive to receiving the electromagnetic radiation of the optical beam, an alignment object selectively positioned at the intermediate image plane and configured to superimpose an alignment tool upon the first image, and a controller coupled to the first imaging sensor and configured to perform an alignment process for the first imaging sensor based on at least a position of the alignment tool in the first image.

A first optic adjusts the focus of environment content in independent regions, and delivers the environment content to a see-through display. The display adds display content, and delivers environment and display content to a second optic. The second optic adjusts the focus of the environment and display contents in independent regions, and delivers the environment and display contents to a viewing point. The focuses of the environment and display contents are adjustable independently of one another and in different regions. Environment content may be similar in focus before and after passing through the first and second optics. Display content may be similar in focus to environment content after the display content passes through the second optic. A modifier also may darken, change opacity, or otherwise modify the environment content, independently in different regions; the display also may brighten, enlarge, or otherwise alter the display content, independently in different regions.

A virtual reality headset displays a three-dimensional (3D) virtual scene and includes a varifocal element to dynamically adjust a focal length of an optics block included in the virtual reality headset based on a location in the virtual scene where the user is looking. The headset tracks a user's eyes to approximate gaze lines and determines a plane of focus for a frame of the virtual scene as the intersection of the gaze lines. The varifocal element adjusts the focal length of the optics block so the optics block is focused at the plane of focus, which keeps the user's eyes in a zone of comfort as vergence and accommodation change. Based on the plane of focus, the virtual reality headset may provide depth cues, such as depth of field blur, to planes in the virtual scene deeper in the user's field of view than the plane of focus.

A method, system, apparatus, and/or device that may include a first optic located a first distance from an optical receiver, the first optic being adapted to: receive environment content from a location in front of the first optic relative to the optical receiver; and alter a focal vergence of the environment content. The method, system, apparatus, and/or device may include a display located a second distance from the optical receiver, the display being is adapted to: receive the environment content from the first optic; and deliver the environment content and display content to a second optic. The method, system, apparatus, and/or device may include the second optic located a third distance from the optical receiver, the second optic being is adapted to: receive the environment content and the display content from the display; alter the focal vergence of the environment content; and alter a focal vergence of the display content.

An imaging apparatus includes an imager, a face detecting unit, an object detecting unit, an another-subject determining unit, a trimming-position setting unit, and an image processing unit. The imager acquires image data. The face detecting unit detects a face in the image data. An object detecting unit detects an object specifying a direction in which the face seems to be paying attention. The another-subject determining unit determines whether another subject is present in the direction in which the face seems to be paying attention. The trimming-position setting unit sets a trimming range on the basis of a determination result of the another-subject determining unit. The image processing unit performs trimming on the image data in accordance with the trimming range set.

A microscope apparatus includes an objective and an automatic focusing device. The automatic focusing device is an automatic focusing device of an active type that irradiates a specimen with automatic focusing light via the objective, and the automatic focusing device is configured in such away that an illumination light axis of the automatic focusing light passes through a position distant from an optical axis of the objective.

The invention discloses a method and a portable device for focusing an image in the device (10), which device (10) comprises; a first image recording arrangement (24a) for recording images of an user (50) of the device (10); a second image recording arrangement (24b) comprising an autofocus arrangement for recording images of the environment surrounding the device (10); and a display arrangement (22) for reproducing the recorded images of the environment surrounding the device (10), which method comprises the step of: obtaining a plurality of gazing directions of the user (50) from images recorded by the first image recording arrangement (24a); selecting focusing areas depending on the obtained gazing directions; processing said at least one image of the environment so as to create a final image that is focused within areas defined by the focusing areas.

Methods and systems are provided for an auto-focus system for a microscope. In one example, a method for the auto-focus system includes focusing the microscope at a glass-specimen interface of a sample by passing a primary laser beam through a beamsplitting device to generate an additional, secondary laser beam that is a mirror image of the primary laser beam. A location of an objective may be triangulated along a longitudinal axis of the microscope based on a centroid of spectral intensities of each of the primary and secondary laser beams.

An imaging apparatus includes a first optical system, a first separation optical system that separates the light transmitted through the first optical system into the first wavelength range light and the second wavelength range light, a second optical system that transmits the first wavelength range light obtained by the first separation optical system, a third optical system that transmits the second wavelength range light obtained by the first separation optical system, a first image sensor that receives the first wavelength range light, a second image sensor that receives the second wavelength range light, and a first light source that emits the first wavelength range light, in which the first optical system emits the first wavelength range light emitted from the first light source to a subject, and transmits subject light including first wavelength range reflected light obtained by reflecting the first wavelength range light by the subject.

An augmented reality (AR) device including a variable focus lens of which a focal length may be changed by adjusting refractive power and adjusting the position of a focus adjustment region of the variable focus lens according to a direction of the user's view. The AR device may obtain an eye vector indicating a direction of the user's view using an eye tracker, adjust a refractive power of a first focus adjustment region of a first variable focus lens to change a focal length for displaying a virtual image, and complementarily adjust a refractive power of a second focus adjustment lens with respect to the adjusted refractive power of the first focus adjustment region.