An autofocus lens system includes no conventional moving parts and has excellent speed and low power consumption. The system includes a small electronically-controlled focusing-module lens. The focusing-module lens includes two adjustable polymeric surfaces (e.g., two adjustable-surface lenses in a back-to-back configuration). The curvature of the surfaces can be adjusted to change focus. The performance of the autofocus lens system is extended by adding a conventional first and second lens, or lens group, on either side of the focusing-module lens. What results is an autofocus lens system with excellent near field and far field performance.

An autofocus lens system includes no conventional moving parts and has excellent speed and low power consumption. The system includes a small electronically-controlled focusing-module lens. The focusing-module lens includes two adjustable polymeric surfaces (e.g., two adjustable-surface lenses in a back-to-back configuration). The curvature of the surfaces can be adjusted to change focus. The performance of the autofocus lens system is extended by adding a conventional first and second lens, or lens group, on either side of the focusing-module lens. What results is an autofocus lens system with excellent near field and far field performance.

In a 1-2nd lens group, an aspherical resin lens is disposed on the outermost enlargement side, an enlargement-side fixed lens group (second fixed lens group) as a fixed group is disposed, a moving lens group, which move when focusing is performed in response to the magnification change, is disposed further on the reduction side from the second fixed lens group. Even in a case where the second optical group is configured of one mirror, it is possible for a primary image to have appropriate aberration and to hereby reduce aberration of an image which is finally projected onto a screen through the second optical group.

An optical imaging system (100) includes a frame (102) designed to provide mechanical coupling between a first stage (104) and a second stage (106), a sample holding region (108) located on the first stage (104), a lens arrangement, and a sensor array. The lens arrangement is disposed between the first stage (104) and the second stage (106) and is designed to receive light from a sample at the sample holding region (108) on the first stage. The lens arrangement has a numerical aperture less than 0.1. The sensor array is coupled to the second stage (106) and is designed to receive light passing through the lens arrangement.

An optical imaging system (100) includes a frame (102) designed to provide mechanical coupling between a first stage (104) and a second stage (106), a sample holding region (108) located on the first stage (104), a lens arrangement, and a sensor array. The lens arrangement is disposed between the first stage (104) and the second stage (106) and is designed to receive light from a sample at the sample holding region (108) on the first stage. The lens arrangement has a numerical aperture less than 0.1. The sensor array is coupled to the second stage (106) and is designed to receive light passing through the lens arrangement.

An imaging device may generate a zoom image corresponding to a plurality of magnifications by adjusting an effective focal length through a multi-layer optical system including an active imaging array having an active imaging lens.

An imaging device may generate a zoom image corresponding to a plurality of magnifications by adjusting an effective focal length through a multi-layer optical system including an active imaging array having an active imaging lens.

A visualization apparatus and a system for enhancing hand-eye coordination during a medical procedure are provided. The visualization apparatus includes an elongate support member, a head member, an operating head element, and a processor. The head member connected to the elongate support member at a predetermined angle includes an angled wall for mounting a reflector. The operating head element connected to an upper end of the head member mounts and supports an objective lens. The objective lens focuses light from an operating field to a reflector to create an image of the operating field. An eyepiece lens accommodated in the elongate support member or the head member magnifies the created image. The processor operatively communicating with an image receiver processes and transmits the magnified image to a viewer. The orientation of the magnified image on the viewer is similar to the orientation of the operating field, thereby enhancing hand-eye coordination.

A light sheet microscope includes an illumination optical system that irradiates a light sheet onto a sample and a setting changer that changes a setting of a divergence angle or convergence angle relating to a width direction of the light sheet emitted from the illumination optical system.

A light sheet microscope includes an illumination optical system that irradiates a light sheet onto a sample and a setting changer that changes a setting of a divergence angle or convergence angle relating to a width direction of the light sheet emitted from the illumination optical system.