Hon Hai Precision Industry Co., Ltd.

Chun Yu Lee

Tai-Cheng Yu

Chien-Cheng Chen

Kun-Tsan Wu

Tai-Cherng Yu

Yao-Hao Chang

Ming-Chiang Tsai

Tsung-Wei Jiang

Ja Ju Dy

Ju Jn Dy

Ja Jn Dy

An illuminated logo unit () includes a reflective board (), a pattern panel (), an illuminating device (), and a reflective film (). The pattern panel is arranged over the reflective board, and the reflective film is disposed under the pattern panel opposite to the reflective board. Much light emanating from the illuminating device is reflected more than once by the reflective film and the reflective board before it reaches the pattern panel. This enhances the overall brightness and uniformity of light beams of the illuminated logo unit. Even at night, the illuminated logo unit can be clearly viewed. The illuminated logo unit may be used for applications such as in a billboard, a logo displayed on a vehicle, and so on.

Illuminated logo unit with reflective film

An optical attenuator () includes an input port (), an output port (), a fixed reflector (), a movable reflector (), two detecting means () and a driving device (). The input port includes a first collimator () and a filter () attached to the first collimator. The output port includes a second collimator () and a splitter () connected to the second collimator. Input signals are transmitted from an input fiber () through the first collimator and then pass through the filter. The signals passing through the filter are directed by the fixed and the movable reflectors to the second collimator. The angular position of the movable reflector, which is driven by the driving device, determines the proportion of the signals. reflected by the reflectors that are received by the second collimator, which determines the size of the output signals transmitted in an output fiber ().

Variable optical attenuator

An optical isolator ( ) includes a first optical collimator ( ), an optical isolating unit ( ), a second optical collimator ( ), and a tubular housing ( ). The first optical collimator includes an input optical fiber and a first collimating lens ( ). The second optical collimator includes an output optical fiber and a second collimating lens ( ). The optical isolating unit includes an optical rotator ( ), first and second birefringent wedges ( ), a pair of beam displacers ( ), and a magnetic tube ( ). The beam displacers are fixed to respective opposite ends of the optical rotator. The first and second birefringent wedges are respectively fixed to the first and second collimating lenses. The magnetic tube encloses protruding portions of the first and second collimating lenses, the first and second birefringent wedges, the beam displacers and the optical rotator therein. Each beam displacer effectively eliminates any undesired displacement of a light beam.

Optical isolator

An optical fiber cable holder ( ) includes a clasping portion ( ) and a fixing portion ( ). The clasping portion includes a top cover ( ), and two side walls ( ) depending from opposite sides of the top cover. A pair of bent arms ( ) respectively extends from other opposite sides of the top cover, to prevent excessive bending of any cable ( ) secured in the holder. A pair of spring arms ( ) slants inwardly from the side walls, to retain the cables in the clasping portion. The fixing portion includes a pair of locking legs ( ) and four stop latches ( ). The locking legs are engagingly received through a pair of holes ( ) defined in a base plate ( ). The stop latches are supported on the base plate. The holder is thereby fixed on the base plate.

Optical fiber cable holder

An optical isolator includes a first optical collimator, an isolated core, a second optical collimator and an outer tube. The first and second collimators and the isolated core are accommodated in the outer tube. The second collimator has a long sleeve which entirely accommodates the isolated core. The isolated core includes a first polarizer, a Faraday rotator crystal, and a second polarizer positioned in sequence within a toroidal magnetic core. An axial length of the toroidal magnetic core is equal to or slightly less than an overall length of the two polarizers and the rotator crystal. The two polarizers and the rotator crystal are sized such that an overall diameter of the isolated core is less than an inner diameter of the long sleeve. The magnetic core is glued within the long sleeve.

An optical isolator includes a first collimator, a second collimator and an isolation assembly arranged between the collimators. The first collimator includes a first capillary retaining an input fiber and a first GRIN lens received and retained in a first glass sleeve. The isolation assembly includes two birefringent crystal wedges with an optical rotator interposed between the birefringent crystal wedges. A magnetic ring receives and retains the birefringent crystal wedges and the optical rotator together. The second collimator includes a second capillary retaining an output fiber and a second GRIN lens which are received and retained in a second glass sleeve. A first stainless steel sleeve receives and retains the first glass sleeve and the isolation assembly together while a second stainless sleeve is fit over the second collimator. Apertures are defined in the first stainless steel sleeve. An end of the second stainless steel sleeve is sized to snugly fit into the end of the first stainless steel sleeve and thus properly aligns the collimators with each other. A portion of the second stainless steel sleeve underlaps the apertures of the first stainless sleeve. Welding is performed through the apertures to permanently secure the two stainless steel sleeves together.

An optical isolator includes a first optical collimator, a first birefringent crystal, a Faraday rotator, a second birefringent crystal and a second optical collimator. The first and second collimators have the same structure and configuration. Each first and second collimator includes a ferrule, an optical fiber retained in the ferrule, and a collimating lens, all of which are secured in a tube. The first and second birefringent crystals are respectively fixed to the first and the second collimators. The Faraday rotator is stationed between the first and second collimators, and fixed onto an end of the first collimator. In assembly, the first and second collimators and the Faraday rotator are all secured in a stainless steel outer tube. The second collimator is rotated within the outer tube until correct relative alignment of optical axes of the birefringent crystals is attained.

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Tu-Chen, Taiwan

Chun Yu Lee