An objective optical system for endoscope consists of a front group having a negative refractive power, an aperture stop, and a rear group having a positive refractive power. The front group consists of a first lens having a negative refractive power and a second lens having a positive refractive power. The rear group consists of a third lens having a positive refractive power, a cemented lens of a fourth lens having a positive refractive power and a fifth lens having a negative refractive power, and a sixth lens having a positive refractive power. A shape of the second lens is a meniscus shape having a convex surface directed toward an image side. The sixth lens is cemented to a plane parallel plate, and the following conditional expressions (1) and (2) are satisfied:
1.0<f3/d6<2.8  (1)
1.7<|f1/f1<10  (2).

An optical system having a viewing angle θ relative to a longitudinal axis including: a prism group to deflect incident light by reflection at first and second surfaces including prisms with mutually adjacent boundary surfaces arranged in pairs and separated by a gap, a total reflection of incident light from outside a field of view takes place at a boundary surface between a prism and a corresponding gap, the prism group has a cylindrical envelope (D), and an input-side prism is configured to have a wedge-shape with angle β and an optical path length α; an entry surface of the prism has a length L, which is a length of a line of intersection of the entry surface with a plane that is spanned by a central beam path; and the first prism meets the conditions: α<cos θ.Math.tan β.Math.D/2 and L<D/cos θ.

An endoscope system includes an image acquisition section, an attention area setting section, and a dimming control section. The image acquisition section acquires a captured image that includes an object image. The attention area setting section sets an attention area within the captured image based on information from the endoscope system. The dimming control section performs a dimming control process that controls the intensity of illumination light based on the attention area set by the attention area setting section.

A laryngoscope blade which improves the transmission of light from the laryngoscope to enhance the amount of light reflected from an area of interest in a patient. The laryngoscope blade has a channel which extends at least partially though the blade and receives a light source. The channel has a substantially transparent end face which is situated towards the blade end and has an optical clement adapted to reduce the ambient light signal from the light source in the channel.

Systems, apparatuses, and methods are discussed herein for an endoscope. The endoscope has a distal tip with an oblique portion and a flat portion, the oblique portion defines a plane that forms an angle between and including 20 and 40 degrees to a central axis of the endoscope. A related sheath may have similar features at the distal tip.

An endoscope includes a detachable wireless imaging device and an insertion tube having a distal end region. The attachment of the detachable wireless imaging device detachably attaches the detachable wireless imaging device to the distal end region of the insertion tube.

The present disclosure relates to a cap for protecting an imaging instrument from damage caused by impact or poor handling. Exemplary devices can include a rigid outer shell and soft inner lining surrounding a distal tip of the instrument, to be applied between instrument use, and during instrument transport, disinfection, sterilization, and storage.

An endoscope includes a detachable wireless imaging device and an insertion tube having a distal end region. The attachment of the detachable wireless imaging device detachably attaches the detachable wireless imaging device to the distal end region of the insertion tube.

An endoscope includes a handle assembly, an elongate shaft extending distally from the handle assembly, a tip disposed at a distal end of the elongate shaft, an imaging device disposed within the tip, and a rotation assembly operably coupled to the imaging device for rotating the imaging device within the tip.

TNE provides the opportunity to make the care of children with EoE and other gastrointestinal or aerodigestive conditions safer, more efficient, and less costly while simultaneously advancing our understanding of the pathophysiology and natural course of this condition. A pediatric endoscope was developed to facilitate TNE in children with EoE. The pediatric endoscope (combined gastroscope, bronchoscope, laryngoscope) includes a 3-4 mm flexible, fiber optic endoscope that allows HD TV viewing with the head of a pediatric bronchoscope that allows four way tip deflection, a scope stiffening apparatus to minimize the endoscopes flexibility when needed, a foot and hand activation to allow air/water insufflation and image/video capture, a light source, 2 mm biopsy channel.