摘要:
A method and apparatus for detecting the line of flight, point of entry and angle of entry of an energetic, ionizing particle uses a helical array of scintillating optical fibers.
摘要:
An elongated, flexible plastic tube with internal web and bore structure comprising a continuous sequence of connected vertebra-like elements useful in endoscopes and the like.
摘要:
A glass faceplate having a central area of required useful diameter surrounded by a narrow ring of opaque glass and an outer glass mounting flange. Light entering the flange or ring is prevented from reaching the central area as stray light or glare in the system and spurious reflections at the interface of the ring and central area are minimized by a refractive index match of the two innermost glasses.
摘要:
A lens is formed of a section of glass clad glass rod ground and polished to a spherical shape of radius of curvature equal to that desired of a face of the lens. Remaining leachable cladding glass is removed leaving the lens with finished spherically curved opposite ends and an adaptability to modification by transaxial cutting and flat face finishing for plano-convex applications.
摘要:
A glass blade is produced from a preform of insoluble glass having a sharp edge encased in soluble glass. The encased preform is heated and drawn to the reduced cross-sectional size desired of the glass blade, cut transversely to length and leached for removal of the soluble glass and exposure of its sharp edge.
摘要:
Making an optical prism of an enlarged ground and polished insoluble glass preform encased with soluble glass. The glass combination is heated and drawn to the reduced cross-sectional size desired of the prism with the soluble glass protecting the prism preform against deformation by surface tension forces and other damage. The soluble glass is removed after drawing to leave the prism body with true faces and angles.
摘要:
An orientation indicator is disclosed for observing or reading the orientation of the distal end of an endoscope or of a fiberscope having an elongated flexible shaft relative to the proximate end thereof where the flexible shaft the fiber optic bundles of the scope are subject to torque or rotational stresses. The disclosure includes a method of making the orientation indicator and means for measuring the degree and direction of displacement resulting from said rotational stress or torque.
摘要:
A searching and measuring endoscope employing two image-transmitting systems in a common housing. One system is fitted with a wide angle, fixed focus objective lens with large depth of field for searching and the other system is fitted with a narrow angle, fixed focus objective lens having a small depth of field and a predetermined working distance and magnification for measuring.
摘要:
A glass faceplate having a central area of required useful diameter surrounded by a narrow ring of opaque glass and an outer glass mounting flange. Light entering the flange or ring is prevented from reaching the central area as stray light or glare in the system and spurious reflections at the interface of the ring and central area are minimized by a refractive index match of the two innermost glasses.
摘要:
A short fiber optic image transmitter receives an image produced by a fiberscope objective and transmits the image to the image receiving end of the flexible fiber optic bundle of the fiberscope. The short image transmitter is oscillated about an axis normal to its direction of image transmission for causing images transmitted thereby to scan across the image receiving end of the fiberscope bundle. Synchronous scanning of the opposite image emitting end of the fiberscope bundle renders the received images stationary and of enhanced resolution.