An elongated, tubular inspection instrument characterized as having a control head at its proximal end and an objective assembly at its distal end. Flexible fiber or rigid optics extend between the control head and the objective assembly for the purpose of transmitting to the control head an image viewed from the distal end. Optics located at the objective assembly can be manipulated at the control head to provide, rapidly in succession, either a forward looking view or a sideward looking view. The sideward looking view is always at a positively positioned predetermined angle from the forward looking view.

Multidirectional viewing borescope

A connector for a high energy beam, which is provided with a sleeve fitted on an optical fiber and having an optical fiber support portion of an inner diameter about equal to a diameter of the optical fiber and a larger diameter portion positioned ahead of the optical fiber support portion and having an inner diameter larger than the diameter of the optical fiber so as to form a gap around the optical fiber and in a proper length from the end face of the optical fiber. The optical fiber support portion is formed of a heat resistant inorganic substance having a melting point of 1500° C. or more, for example, a transparent substance, such as sapphire, or an opaque substance, such as aluminium oxide; the so-called fine ceramics. The connector of the present invention is free from burning, melting and diffusion of metallic material, and breakage of optical fiber when in use, thereby being easy to handle and high in quality and reliability and having a long life time.

Connector for high energy beam

In an optical gauge according to the invention, a mirror holder ring 21 is fitted to the outer periphery of the objective lens 12 and an light path bending mirror 22 is rotatably secured at the upper end thereof to the mirror holder ring 21. With such an arrangement, the light downwardly emitted from an optical system 3 irradiates the top plane of an object of measurement when the light path bending mirror 22 is held in parallel with the optical axis of the optical system 3. On the other hand, the light emitted from the optical system 3 is rectangularly turned to irradiate a lateral plane of the object of measurement when the light path bending mirror 22 is turned around its upper end to a position where it is inclined by 45° relative to the optical axis of the optical system 3. Thus, an optical gauge according to the invention can observe one or more than one lateral sides of the object of measurement for dimensional measurement without modifying its attitude.

Optical gauge with adjustable light path bending mirror

An optical system provides a higher resolution image, especially for use with a projection system, using a combiner formed of fiber optics each having an input end and an output end, with the fiber optics grouped together so that the combiner has one or more image input ends each configured to receive an image from an associated image source The input images are combined to yield an output image at the other end of the combiner that is smaller in area than the sum of the input image areas, increasing resolution According to an embodiment, the output image is also counter-distorted to compensate for the distortion of the image caused by the relay optics used in projection

High resolution display component, system and method

A conduit inspection sled comprises: a cage including longitudinally spaced adjustable collars for removably clamping a camera therein and a plurality of peripherally spaced and outwardly extending, elongated upper and lower struts connecting the collars on the upper and lower sides thereof; supports including elongated runners arranged on the lower side of the cage and elongated skids mounted on the upper struts; cables connected to opposite ends of the sled for transporting the same forwardly and rearwardly along the conduit; fore and aft links pivotally connecting the front and rear ends respectively of each lower strut and runner for relative movement toward and away from each other into retracted and extended sled positions respectively; inclined tension springs connecting the cage with the runners beyond the front end of the cage, and normally biasing the cage and runners into an extended sled position, wherein the runners slidably contact the inner periphery of the conduit and thereby normally center the camera substantially along the central longitudinal axis of the conduit; the springs also permitting such relative movement into a retracted sled position wherein the sled is allowed to clear an obstacle within the conduit; an adjustable stop on each runner and removably engageable with a stop retainer on each lower strut for limiting such relative movement to more than one extended sled position depending upon the interior size of the conduit; and an adjustable latch on each strut for ensuring positive engagement with a keeper on the trailing edge of each aft link for locking the sled in a fully retracted position obtained by pulling the rear cable and tensioning the front cable to collapse the sled into such fully retracted position, and thereby facilitate retrieval by reverse transport past an obstacle already cleared during forward transport.

Camera carrying conduit inspection sled

PURPOSE:To make operation easy by providing a driving device consisting of grasping the part of a cable provided with a detecting part for observation at its leading end by means of a cable holder, providing wheels to the leading end of the plural arms energized by the springs on the outside circumference of said cable holder and making one of them self-travelable. CONSTITUTION:A cylindrical cable holder 3 is mounted to a cable 2 provided with a detecting part 1 for observation at its leading end, near said end part, and arms 6 are provided radially at equal intervals freely turnably to this. These arms 6 are held energized outward by means of springs 7. Wheels 5 are mounted to the leading ends of the arms 6. In order to make one of these wheels 5 self-travelable, an outer rotor motor of which the outer side revolves coaxially with the wheels 5 is mounted to said wheel and is remote-operated. If this device is driven in a pipeline 4, it travels by itself even in the pipeline having bent parts and slopes, and this makes it easy to operate.

Observing device for pipeline

PURPOSE:To perform observation while running not only horizontal, but also vertical pipeline by themselves by providing two groups of arms provided with wheels, and overhanging and coupling arms on the same planes radially and freely by springs. CONSTITUTION:A cable 2 equipped with a detection part 1 for observation atop is clamped by a cable holder 3 almost at the tip part, and arms 6 supported rotatably on the same planes are provided at equal intervals at the outer circumference of the cable holder 3; and the arms 6 on the same planes are coupled together by springs 7 so that they are energized outward radially, a wheel 5 is fitted onto each arm front end part 6b, and a driving mechanism which allows a self-run is provided to at least one of wheels 5. Thus, arms 6 are overhung freely and radially by the springs 7, so observation is performed for a pipeline arranged not only horizontally, but also vertically while the device is made run.

Observation device for pipeline

PURPOSE:To make it possible to observe the interior of a pipe by one apparatus, by providing a reflector positioned on the axis of an image pick-up means and inclined with respect to said axis and a rotary means for rotating the reflector around said axis CONSTITUTION:A rotary mirror 19 is held to a mirror holder 19' as a reflector inclined with respect to an axis 18 and a motor 21 allows the rotary mirror 19 to rotate around the axis 18 Therefore, the inner peripheral wall surface of a pipe is illuminated over 360 deg with light of a light guide 12 through the rotary mirror 19 and the image of this illuminated wall surface can be sent to an image pick-up lens 11 again through the rotary mirror 19 By this constitution, the change-over of the observation of the pipe inner periphery and the observation of the front of an image pick-up means can be easily performed by remote operation and, therefore, the observation of the pipe interior can be performed by one apparatus

Pipeline observing apparatus

PURPOSE:To progress a main body at the center of a pipeline while being kept in the center, by providing >=3 bents around the main body having an observing detection section and cables for picture transmission, illumination light transmission and control power supply, and pressing the bents on the pipeline with the elastic force CONSTITUTION:An observing device for inside of pipeline is inserted in the pipeline 2, a picture is transmitted via a cable and the illuminated light and control power are supplied The main body 6 is a cylindrical shape in parallel with the pipeline 2 and has an observing window 7 One part of the main body 6 is supported with a fixed holder 8 and a movable holder 10 is inserted in front of the main body 6 Three arms 16, 13 are pivoted at an angle of 120 deg at the outer circumference of the holders 8, 10 so as to be turned radially and the bents 18 are linked to the tip of the arms 16, 13 A link rod 21 of the holders 8, 10 is provided at a part being 60 deg to the bents 18, and a spring 32 gives an elastic force to attract the holder 10 to the holder 8 Thus, the elastic force to open the bents 18 is obtained, the main body 6 is held at the center of the pipeline 2 and progressed smoothly

Observing device for inside of pipeline

PURPOSE:To make the device smaller in size and its operation simple and expand the visual field by providing an image pickup optical system which reflects and conducts images to one end of an image fiber and its rotative driving mechanism. CONSTITUTION:A cylindrical end casing 3 consisting of plastics or the like is mounted to the leading end of an image fiber 2 which is circumferentially covered with a flexible sheath 1. A lens 4 and a motor 5 are disposed therein and a prism 7 for image pickup is mounted to a shaft 6. A lens 11, a motor 12 revolving synchronously with the motor 5, and a prism 14 for projection in its shaft 13 are disposed in the casing 10 in the trailing end part of the image fiber 2. The images transmitted from the image fiber 2 via the prism 7 are projected onto an annular screen 15 by the prism 14. Thereby, the device is made smaller in size and its operation simple. In addition, its visual field is magnified.

Image monitoring device

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