摘要:
Provided are an imaging unit and an endoscope with reduced diameters and high moisture resistance. An imaging apparatus 100 includes a lens unit 40 in which a plurality of optical elements 40a-1 to 40a-3 including one or more wafer-level lenses and a spacer 40b are laminated, an imaging element 51 configured to receive light incident from the lens unit 40, perform photoelectric conversion on the light, and generate an image signal, and a moisture-proof member 54 that is bent and arranged so as to come in contact with at least a part of side surfaces of the lens unit 40 to prevent moisture from entering a gap between the optical element 40a and the spacer 40b and the like.
摘要:
A polarization-based colposcopy apparatus includes a polarization exchanging beam splitter pair oriented so that s- and p-polarizations are exchanged. An optical flux from a specimen is directed through the pair, and orthogonal components thereof are alternately or selectively coupled to an array detector. The detected images are processed based on image correlations to reveal specimen structures.
摘要:
While being small in size and diameter and allowing a wide angle of view, an endoscope objective optical system has a simply-structured frame for holding a lens and inhibits the occurrence of flare caused when rays are reflected at an inner circumferential surface of the frame. Provided is an endoscope objective optical system (100) including, in order from an object side, an aperture stop (AS), a front group having positive refractive power (GF), and a rear group having positive refractive power (GR), in which the rear group (GR) is formed by joining a single lens (LP) having positive refractive power and a single lens (LN) having negative refractive power and is joined to an imaging device; and a joining surface (Sc) between the single lenses (LP and LN) has positive refractive power.
摘要:
A polarization-based colposcopy apparatus includes a polarization exchanging beam splitter pair oriented so that s- and p-polarizations are exchanged. An optical flux from a specimen is directed through the pair, and orthogonal components thereof are alternately or selectively coupled to an array detector. The detected images are processed based on image correlations to reveal specimen structures.
摘要:
The endoscope comprises an optical focusing and zooming device (3), motion imparting members (4) operable on the optical device (2), transducer members (5) located downstream from the optical device (3) and designed to convert an optical flow into an electric signal, lighting members (6). A control and monitoring unit (8) receives signals representative of optical zoom degrees and is connected to the motion imparting members (4) to actuate the latter. The optical device (3) comprises a first set of lenses (8), a second set of lenses (9) adapted to be moved by the motion imparting members (4) for changing the optical zoom, a third set of lenses (10) adapted to be moved by the motion imparting members (4) for focus adjustment, a fourth set of lenses (11) for focusing the optical flow on the transducer members (5); the distance between the first (8) and the fourth (11) sets of lenses being unchangeable.
摘要:
A polarization-based colposcopy apparatus includes a polarization exchanging beam splitter pair oriented so that s- and p-polarizations are exchanged. An optical flux from a specimen is directed through the pair, and orthogonal components thereof are alternately or selectively coupled to an array detector. The detected images are processed based on image correlations to revel specimen structures.
摘要:
A signal processing apparatus 6 includes a mode selection unit 6124 that selects any operational mode from among a plurality of operational modes that include a regular operational mode in which a video signal for display is output, and are hierarchically organized in a tree form, the mode selection unit 6124 causing the signal processing apparatus 6 to operate in the selected operational mode. The operational modes include a plurality of lower-level operational modes as lower-level operational modes having a parent-child relation with the regular operational mode. The mode selection unit 6124, after the signal processing apparatus 6 has started up, selects any operational mode from among same-level operational modes for each level from an upper level toward a lower level and, when having selected any of the lower-level operational modes, can select an upper-level operational mode relative to the selected lower-level operational mode on condition that the signal processing apparatus 6 has again started up.
摘要:
A bronchoscope with usual and customary accessories such as working channels for irrigation, forceps, light and image fiber optic bundles (24, 26) where one channel (22) is adapted to receive a small gauge catheterscope (23) for reaching, viewing and inspecting remote small diameter bronchioli of a bronchial tree.