摘要:
Provided is an optical component for optical communication which is capable of suitably accepting a request to reduce a size, resisting a thermal expansion coefficient difference between constituent elements, and adjusting incident and exit modes relative to an end of an optical fiber to thereby constantly attain optical characteristics which correspond to the request. The optical component includes a fiber holding member (3) holding an optical fiber (2), and a lens (4) which is located on an optical path extending from an end of the optical fiber (2) and attached to the fiber holding member (3). A flat portion (4a) formed in a rear end of the lens (4) is bonded to be fixed to a flat portion (6a) of an end of the fiber holding member (3) such that the flat portion (4a) of the lens (4) is opposed to the end of the optical fiber (2). A gap is provided between the flat portion (4a) of the lens (4) and the end (2a) of the optical fiber (2).
摘要:
Provided are a method for producing a phosphor-encapsulating capillary tube in which, when a phosphor is encapsulated thereinto, fluorescence from the phosphor is less likely to leak from an end of the capillary tube; and such a phosphor-encapsulating capillary tube. One end portion 10A of an elongate glass capillary tube 10 having an outer shape of a transverse cross-section elongated in a width direction thereof is heated until the one end portion 10A of the glass capillary tube 10 has been melted, integrated, and thus sealed.
摘要:
A preliminary member of an optical device component with optical fiber comprises a long capillary tube made of glass or crystallized glass and an optical fiber which is fixed in the inner hole of the long capillary tube with adhesive. The overall length of the preliminary member is a plurality of times that of the optical device component or more. A plurality of short capillary tubes with optical fibers are formed by cutting the preliminary member. Thereafter, by polishing both end faces of the short capillary tube with optical fiber, an optical device component can be obtained.
摘要:
A wholly aromatic polyamide (aramid) fiber synthetic paper sheet includes 70-96 wt % of an aramid staple fiber component which includes 30 wt % or more of a para-type aramid staple fibers each having two or more annular projections spaced from each other and having an average ratio R/&ggr; of the largest diameter R of the annular projections to the smallest diameter &ggr; of the annular projection-free portions of the staple fiber, of 1.1 or more, and 4-30 wt % of a binder component, namely a resinous binder and/or heat resistant fibrids.
摘要:
In the capillary tube 22, the cross section of the outer surface is substantially square, and the cross section of the insertion hole 23 is substantially square. Sides La, Lb of the outer surface have high dimensional accuracy and the insertion hole 23 is made to allow two optical fibers 5, 6 to be inserted while adjoining each other and arranged in order therein. The phases of the outer surface and the insertion hole 23 are relatively offset with each other, so that angles &thgr;a, &thgr;b which the sides 23a, 23b of the insertion hole 23 form with flat surfaces 22a, 22b of the outer surface are acute angles of substantially 45°±0.5°. Consequently, the flat surface 22a becomes substantially parallel to the center line M that connects the centers of the cores 5a, 6a of the two optical fibers 5, 6 inserted in the insertion hole 23, and the flat surface 22b becomes substantially perpendicular to the center line M.
摘要:
Provided are a method for manufacturing a liquid crystal lens which, even with the use of a thin sheet glass as a glass sheet for dividing a liquid crystal layer, can reduce the likelihood of breakage of the thin sheet glass in the production process and the liquid crystal lens. A mother liquid crystal lens having a plurality of liquid crystal lens units arrayed in a longitudinal direction thereof is cut for each of the liquid crystal lens units to separate out the liquid crystal lens units and thus manufacture respective liquid crystal lenses 10. Longitudinally extending side surfaces 13c, 13d, 14c, and 14d of glass ribbons which provide thin sheet glasses 13 and 14 have an outwardly bulging curved shape in a cross section perpendicular to the longitudinal direction.
摘要:
The present invention can further increase the efficiency of light extraction from the light exit surface of a light-emitting device. A cell (10) for a light-emitting device includes: a first main wall (10a) and a second main wall (10b) which are disposed facing each other with a distance therebetween; and a sidewall (10c). The sidewall (10c) connects the first main wall (10a) and the second main wall (10b). The sidewall (10c) defines, together with the first and second main walls (10a, 10b), an internal space (10A) into which a luminescent substance is to be encapsulated. A portion of the sidewall (10c) located laterally of the internal space (10A) is white.
摘要:
An optical receptacle comprises a precision sleeve, a stub with an optical fiber fixed to one end of an inner hole of the precision sleeve through an adhesive, and a sleeve holder fixed to an outer periphery of the precision sleeve by press-fitting or through the adhesive. An outer periphery of the stub with an optical fiber and the inner hole of the precision sleeve has a surface roughness Ra value of 0.1 μm or more and 0.5 μm or less.
摘要:
An optical waveguide member is inserted into a tubular member. The tubular member is elongated with heating and fusion-bonded to the optical waveguide member. Thus, a formed body is obtained. The formed body is cut into a predetermined length to obtain an optical waveguide member. The tubular member is preferably made of a crystallized glass with crystals deposited therein at least in the state of the formed body.
摘要:
A ferrule (11) includes an inner hole (12a) that is formed of crystallized glass and into which a quartz glass-made optical fiber (4) (core) is inserted, a tip end face (12b), and an outer circumferential surface (12d). The tip end face (12b) is formed with a flat surface (12b1) on the central side including a tip end opening of the inner hole (12a) and a chamfered portion (12b2) provided on the outer circumferential side of the flat surface (12b1) The chamfered portion (12b2) is subjected to surface treatment so that its wettability with respect to an adhesive (5) is smaller than the wettability of the flat surface (12b1).