Abstract: In a three-dimensional multi-channel optical switch using biaxially movable mirrors, a mirror packing density is improved to support an increased number of channels. The three-dimensional optical switch comprises a fiber collimator array, and a first mirror array and a second mirror array disposed in close proximity to a beam emission surface of the fiber collimator array. The first mirror array has arranged thereon a plurality of first mirrors each having a single rotation axis and a plurality of first windows. The second mirror array has arranged thereon a plurality of second mirrors each having a single rotation axis orthogonal to the first rotation axis and a plurality of second windows. A beam emitted from a fiber collimator passes through the first window, reflects on a fixed mirror and a movable mirror in order, passes through the second window, and exits to the outside.

Abstract: An optical switch for switching communication light beams propagating through a plurality of optical fibers. The switch includes a plurality of input-side lenses, a plurality of moving mirrors, a plurality of output-side lenses, light emitting units, and light receiving units arranged for optical communication. The plurality of input-side lenses include first input-side lenses to which communication light beams coming from first external units and propagating through input-side optical fibers connect optically and second input-side lenses to which the light beams from the light emitting units connect optically.

Abstract: The present invention is to reduce the package cost and secure the high reliability in an optical module having an optical device and an optical fiber.

Abstract: In a three-dimensional multi-channel optical switch using biaxially movable mirrors, a mirror packing density is improved to support an increased number of channels. The three-dimensional optical switch comprises a fiber collimator array, and a first mirror array and a second mirror array disposed in close proximity to a beam emission surface of the fiber collimator array. The first mirror array has arranged thereon a plurality of first mirrors each having a single rotation axis and a plurality of first windows. The second mirror array has arranged thereon a plurality of second mirrors each having a single rotation axis orthogonal to the first rotation axis and a plurality of second windows. A beam emitted from a fiber collimator passes through the first window, reflects on a fixed mirror and a movable mirror in order, passes through the second window, and exits to the outside.

Abstract: An optical module for an optical device and an optical fiber is constituted by a pre-molded plastic package. In forming the plastic package, the main flowing direction of the molding resin is substantially parallel with the optical axis of the optical fiber. The optical module is formed by molding the resin by injection using pressure and then solidifying the resin. When the plastic package is formed by comprehensive molding, the flowing direction of the resin is parallel with the optical axis direction of the optical fiber to be installed in the optical module. As a result, for comprehensive molding, the molding pressure applied to the optical fiber is reduced. By using the resin case that is formed, the resulting package exhibits high rigidity and low thermal expansion properties in connection with the flowing direction of the resin, thus reducing the external stress and thermal stress applied to the optical fiber.

Abstract: The present invention provides a collimator lens array with an accurate optical axis direction and a high positional accuracy. According to the present invention, a collimator lens array is formed by mounting fiber collimators in respective concaves formed on a bench at appropriate positions to form a collimator row and by stacking up a plurality of such benches. Concaves for engagement with positioning members are formed in each of the front and back surfaces of each bench. The bench positioning concaves are engaged with the corresponding positioning members to accurately position the benches. Thus, a collimator lens array is formed which has a high two-dimensional accuracy.

Abstract: In an optical switch system for switching over plural input lights and plural output lights corresponding thereto through spatial optical connection therebetween, having: a first reflection mirror to be directed with an input light and being controllable in position thereof; a second reflection mirror disposed opposite to the first reflection mirror, for reflecting the light reflected on the first reflection mirror, so as to outputted it therefrom; means for controlling positions of the first and second reflection mirrors, respectively; and means for adjusting the position of the first and second mirrors, which are controller by the controlling means, wherein a reference light being substantially different from the input light in wavelength is generated; both the reference light and the input light reflect upon the first and second reflection mirrors; and (c) optical intensity of the reference light selectively diverged from the reflection light is detected, thereby controlling positions of the first and said

Abstract: In an optical switch system for switching over plural input lights and plural output lights corresponding thereto through spatial optical connection therebetween, having: a first reflection mirror to be directed with an input light and being controllable in position thereof; a second reflection mirror disposed opposite to the first reflection mirror, for reflecting the light reflected on the first reflection mirror, so as to outputted it therefrom; means for controlling positions of the first and second reflection mirrors, respectively; and means for adjusting the position of the first and second mirrors, which are controller by the controlling means, wherein a reference light being substantially different from the input light in wavelength is generated; both the reference light and the input light reflect upon the first and second reflection mirrors; and (c) optical intensity of the reference light selectively diverged from the reflection light is detected, thereby controlling positions of the first and said

Abstract: The present invention is to reduce the package cost and secure the high reliability in an optical module having an optical device and an optical fiber.

Abstract: An optical module for an optical device and an optical fiber is constituted by a pre-molded plastic package. In forming the plastic package, the main flowing direction of the molding resin is substantially parallel with the optical axis of the optical fiber. The optical module is formed by molding the resin by an injection method using pressure and then solidifying the resin. When the plastic package is formed by comprehensive molding, the flowing direction of the resin is parallel with the optical axis direction of the optical fiber to be installed in the optical module. As a result, for comprehensive molding, the molding pressure applied to the optical fiber is reduced. By using the resin case that is formed, the resulting package exhibits high rigidity and low thermal expansion properties in connection with the flowing direction of the resin, thus reducing the external stress and thermal stress applied to the optical fiber.

Abstract: When an optical system is housed in a plastic case, an optical connection in the system might be changed by a deformation of the case due to heat and thermal resistance might be increased. It is important that the case has not only a function of housing the elements of the optical system, but also a function of ensuring that light is stably produced in the optical system, which, is the most important function of the case. Therefore, the deformation of the case due to a change in temperature is prevented by a frame inserted into the opening portion of the case and further by mounting the case on an external aluminum substrate. That is, stability in the optical connection is improved by improving the structure of the case and by mounting an case on the external substrate. Further, an increase in the thermal resistance is prevented in the same way by provision of the frame and the external aluminum substrate.

Abstract: An optical module for an optical device and an optical fiber is constituted by a pre-molded plastic package. In forming the plastic package, the main flowing direction of the molding resin is substantially parallel with the optical axis of the optical fiber. The optical module is formed by molding the resin by an injection method using pressure and then solidifying the resin. When the plastic package is formed by comprehensive molding, the flowing direction of the resin is parallel with the optical axis direction of the optical fiber to be installed in the optical module. As a result, for comprehensive molding, the molding pressure applied to the optical fiber is reduced. By using the resin case that is formed, the resulting package exhibits high rigidity and low thermal expansion properties in connection with the flowing direction of the resin, thus reducing the external stress and thermal stress applied to the optical fiber.

Abstract: The present invention is to reduce the package cost and secure the high reliability in an optical module having an optical device and an optical fiber.

Abstract: An optical module for an optical device and an optical fiber is constituted by a pre-molded plastic package. In forming the plastic package, the main flowing direction of the molding resin is substantially parallel with the optical axis of the optical fiber. The optical module is formed by molding the resin by an injection method using pressure and then solidifying the resin. When the plastic package is formed by comprehensive molding, the flowing direction of the resin is parallel with the optical axis direction of the optical fiber to be installed in the optical module. As a result, for comprehensive molding, the molding pressure applied to the optical fiber is reduced. By using the resin case that is formed, the resulting package exhibits high rigidity and low thermal expansion properties in connection with the flowing direction of the resin, thus reducing the external stress and thermal stress applied to the optical fiber.

Abstract: An apparatus for transporting an electronic component includes a head for holding the component when the component is picked up from a suitable storage device. The head is movable relative to a base with an imaging apparatus being fixed to the head and allowing position of the component relative to the head to be determined while the component is being transported. A movable optical component is provided on the head which, in one position, contributes to defining an optical path between the component and the imaging apparatus, and in another position, is withdrawn. A further imaging apparatus may be provided, on the base or on the head with the further imaging apparatus detecting the position of large components, if the first imaging apparatus has a narrow filed of view for small components. Alternatively, when the further imaging apparatus is on the head, the imaging apparatus may detect the position to which the component is to be transported.

Abstract: A heat-exchanger includes a plurality of stacked tubular elements each having tanks, and passage-forming protrusions defining a passage connecting the tanks, fins interposed between adjacent ones of the tubular elements and contacting the passage-forming protrusions, inlet/outlet units each comprising a barrel-shaped element protruding from and open to the tank of a respective one of the tubular elements, inlet/outlet pipes fitted coaxially in contact with and joined to the barrel-shaped elements, respectively, and a measure (reinforcement) for preventing parts of the barrel-shaped elements from being deformed as the inlet/outlet pipes are fitted to the barrel-shaped elements during the assembly of the heat exchanger to in turn maintain the integrity of the joints between the inlet/outlet units and the inlet/outlet pipes. The reinforcement may include a ring disposed around the barrel-shaped element adjacent an end thereof.

Abstract: A sturdy heat exchanger, having a variable configuration, is constructed by separately building a primary heat exchanger and an auxiliary heat exchanger, connecting the primary heat exchanger and the auxiliary heat exchanger via brackets mounted on the header pipes of the primary heat exchanger and on the auxiliary heat exchanger, and fluid connecting the header pipes via a connecting pipe. On the tops and bottoms of the primary heat exchanger and of the auxiliary heat exchanger, a pair of reinforcing side plates are mounted, and by engaging the opposing reinforcement plates to assemble the primary heat exchanger to the auxiliary heat exchanger, the heat exchanger's sturdiness is further reinforced, thereby preventing the header tanks from deforming the tubes.