An imaging probe comprises a camera or endoscope with an external detector array, in which the probe is sized and shaped for surgical placement in an eye to image the eye from an interior of the eye during treatment. The imaging probe and a treatment probe can be coupled together with a fastener or contained within a housing. The imaging probe and the treatment probe can be sized and shaped to enter the eye through an incision in the cornea and image one or more of the ciliary body band or the scleral spur. The treatment probe may comprise a treatment optical fiber or a surgical placement device to deliver an implant. A processor coupled to the detector can be configured with instructions to identify a location of one or more of the ciliary body band, the scleral spur, Schwalbe's line, or Schlemm's canal from the image.

A reversal system for an endoscope, the reversal system including: first and second outer achromats each comprising at least two lenses, wherein the first and second outer achromats have an outer diameter; first and second inner achromats arranged between the first and second outer achromats, wherein each of the first and second inner achromats comprises at least two lenses; and a holding sleeve for accommodating the at least two lenses of one or more of the first and second inner achromats, wherein the holding sleeve with the at least one of the first and second inner achromats is arranged between the first and second outer achromats.

An optical unit includes a movable section that holds a movable lens group and includes a rotation restricting section, a fixed section that holds a fixed lens group and has specific permeability larger than 1.0, n thinned-down sections being provided in the fixed section, and a voice coil motor including an n magnet sections disposed at every (360/n)° around a center axis of the movable section and a coil section disposed in the fixed section. The n magnet sections are respectively housed in n thinned-down sections in a noncontact manner. The n thinned-down sections are formed in asymmetrical positions different from every (360/n)° around the center axis.

Scopes such as medical imaging camera head devices and methods are provided using light captured by an endoscope system or other medical scope or borescope. At least one polarizing optical element manipulates the polarization properties of image light. The manipulated image light is focused on an image sensor including polarizers for each pixel. Multiple images are produced based sets of pixels having the same orientation of polarizer. The resulting images are combined with high dynamic range techniques.

The endoscope objective optical system includes in order from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power. A lens surface positioned nearest to an image side in the second lens group is a concave surface which is directed toward the image side. The second lens group moves along an optical axis.

The objective lens unit includes, a front lens group having a negative refractive power, a diaphragm, and a rear lens group having a positive refractive power, in order from an object side. The front lens group includes a negative lens having a concave surface facing an image surface side, and a positive lens having a convex surface facing the object side, and the rear lens group includes a positive lens having a convex surface facing the image surface side and a cemented lens in which a positive lens and a negative lens are cemented. The endoscope objective lens unit satisfies −1.6<f.sub.F/f.sub.R<−1.2 and −1.3<f.sub.3/f.sub.F<−0.7. Note that f.sub.F and f.sub.R are focal lengths of the entire system of the front lens group and the rear lens group, and f.sub.3 is a focal length of a positive lens, in the rear lens group.

A focus control device includes a processor. The processor analyzes detection results of a target object in time sequence to determine whether the target object is in a lost state in which the target object is not temporarily captured into an image, sets a focus drive mode to an autofocus mode when the target object is detected, sets a first positional mode in which the focus lens is arranged at a position that is within a set range of an in-focus object plane position and is on the far point side of a central position when the target object is not detected and is not in the lost state, and sets the focus drive mode such that a lens position is nearer to a near point than in the first positional mode or sets the focus drive mode to the autofocus mode in a when the lost state is determined.

An optical imaging lens assembly, which is applied for an endoscopic optical device, from an object side to an image side aligned in order includes a first lens element, a second lens element and a third lens element. The first lens element has negative refracting power, and further has a first convex object-side surface and a first image-side surface. The second lens element has positive refracting power, and further has a second convex object-side surface and a second concave image-side surface. The third lens element has positive refracting power, and further has a third convex image-side surface and a third object-side surface.

An outer shaft for receiving a shaft of an endoscope comprises a proximal end region for receiving a proximal end region of the shaft of the endoscope, a sealing surface for resting on a corresponding sealing surface of the endoscope for locally fluid-tight sealing of an intermediate space between outer shaft and shaft of the endoscope and a radially inwardly protruding cleat in the proximal end region for proximally engaging behind a radially outwardly protruding cleat on the proximal end region of the shaft of the endoscope. The radially inwardly protruding cleat is provided on a section of the proximal end region of the outer shaft that is elastically deformable in the axial direction of the outer shaft.

The invention relates to a subassembly (1) for an objective (10), in particular for a long and slim optical image transmission system, for example an endoscope, an objective (10) and an optical image transmission system, as well as methods for manufacturing a subassembly and an objective. The subassembly (1) comprises a prism (2) and an aperture element (3), wherein the prism (2) and the aperture element (3) are fixedly connected to each other, preferably by means of a putty or via direct bonding.