Sumitomo Electric Industries, Limited

Fuji Xerox Co., Ltd.

Tatsuhiko Saitoh

Yuichi Ohga

Katsuya Nagayama

Shinji Ishikawa

Hiroshi Yokota

Yuji Kobayashi

Ichiro Tsuchiya

Masumi Ito

Toshio Danzuka

Takayuki Shimazu

Masahiro Machida

Hiroshi Takamizawa

Takenori Uchiyama

An image processing apparatus includes an image data storage unit, an operation unit, a generation unit, a display unit and a control unit. The image data storage unit stores plural pieces of image data. The operation unit allows a user to input an instruction. The generation unit outputs one of a first list of the stored image data in a first display form and a second list of the stored image data in a second display form according to the instruction. The control unit controls the display unit to display the one. When the generation unit switches from outputting the one to outputting the other in accordance with the input instruction, the control unit controls the display unit to display the other so that image data, which is displayed at a particular position in a previous display form, is displayed at a particular position in a current display form.

Image processing apparatus and image data list display method

A foreign matter detector and a foreign matter detecting method are provided, with which foreign matter detection performance can be improved. The foreign matter detector comprises: a means for irradiating first inspection light and second inspection light to an inspection area such that their incident planes are perpendicular to each other; a measuring means for measuring the spectrum of reflected light, the reflected light being a reflection of the inspection light at the inspection area; and a means for determining, by analyzing the spectrum of the reflected light, whether any foreign matter is intermingled or not.

Equipment and method for detecting foreign matters

In menu operating method and device and an image processing apparatus using the same, a setting frame for operating a setting menu is constructed by a setting menu display area and a hierarchical menu display area. A setting menu to be operated is displayed in the setting menu display area, and menu item buttons corresponding to setting menus on respective layers contained in a hierarchical menu are displayed in a listing style according to its hierarchical structure in the hierarchical menu display area. At this time, an operator can obtain information such as the hierarchical structure of menus and the position of a setting menu being operated on each setting frame, and the operability of the hierarchical menu is enhanced.

Operating method and device, and image processing apparatus using the same

A optical fiber connector cord capable of being detachably attached to a receptacle fixed to an optical apparatus includes an optical fiber having at least one hole which extends along an optical axis, a plug having a fiber hole through which the optical fiber extends and which is capable of being fitted into the receptacle, a first sealing member which is provided on an outer peripheral surface of the plug and which seals a gap between the plug and the receptacle along the outer periphery of the plug, and a second sealing member which seals a gap between an inner surface of the plug's fiber hole and the optical fiber along the outer periphery of the optical fiber, so that holes in the optical fiber are effectively prevented from communicating with the atmosphere. In addition, an optical coupling set includes the optical fiber connector cord and the receptacle.

Optical fiber connector cord and optical coupling set including the optical fiber connector cord

The present invention provides a method of elongating a glass preform having holes extending in the longitudinal direction while suppressing excess shrinkage of the holes. In the method of elongating a glass preform of the present invention, both ends of the glass preform having the holes extending in the longitudinal direction are held by a first holding member and a second holding member, respectively; and the glass preform is successively heat-melted from one of the ends by a heating means while the distance between the first holding member and the second holding member is increased in the longitudinal direction, to elongate the glass preform. The glass preform is elongated by heat-melting with the heating means in a manner such that the temperature T of the softened portion satisfies a relation represented by 11[&#xb0; C./mm]&#xb7;D+860[&#xb0; C.]&#x3c;T&#x3c;17[&#xb0; C./mm]&#xb7;D+880[&#xb0; C.], where D is the outer diameter of a post-elongation glass preform, and T is the maximum temperature of a softened portion of the glass preform heat-melted by the heating means.

Method of elongating glass preform

A drawing apparatushas a drawing furnace, a heating furnace, and a resin curing section. The drawing furnacehas a muffle tubeto which an He gas supply passagefrom an He gas supply sectionis connected so as to supply He gas. The optical fiberdrawn upon heating by the drawing furnaceis fed to the heating furnace, whereby a predetermined part of the optical fiberis annealed at a predetermined cooling rate. The heating furnacehas a muffle tubeto which an Ngas supply passagefrom an Ngas supply sectionis connected so as to supply Ngas. Thereafter, the optical fiberis coated with a UV resinby a coating die, and the UV resinis cured in the resin curing section, whereby a coated optical fiberis formed.

Apparatus and method for making optical fiber

An optical fiber preform having a viscosity ratio R&eegr;&equals;&eegr; /&eegr; of 2.5 or less between the core average viscosity &eegr; and the total average viscosity &eegr; is prepared, and is drawn by a drawing furnace so as to yield an optical fiber which is then heated to a temperature within a predetermined range so as to be annealed by a heating furnace disposed downstream the drawing furnace Here, upon annealing in the heating furnace the fictive temperature Tf within the optical fiber lowers, thereby reducing the Rayleigh scattering loss. At the same time, the viscosity ratio condition of R&eegr;&lE;2.5 restrains the stress from being concentrated into the core, thereby lowering the occurrence of structural asymmetry loss and the like. Hence, an optical fiber which can reduce the transmission loss caused by the Rayleigh scattering loss and the like as a whole, and a method of making the same can be obtained.

Optical fiber and method of making the same

A glass soot deposit is produced at a high deposition rate by blowing a gaseous glass-forming raw material together with a fuel gas from a combustion burner in a closed muffle, hydrolyzing the glass-forming raw material in a flame to generate glass soot, and depositing the glass soot on a tip end or a peripheral surface of a starting member which is rotated to form a glass soot deposit, in which a lowest surface temperature of the muffle tube is maintained at 50.degree. C. or higher and an average surface temperature of the muffle is maintained in a range between 50.degree. C. and 150.degree. C., whereby corrosion of the muffle is prevented.

Method for producing glass soot deposit

A rare earth element-doped glass in which the rare earth element is homogeneously doped is produced by a method coprises hydrolyzing a metal alkoxide of the formula:

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Kanagawa, Japan

Tatsuhiko Saitoh