Nippon Sheet Glass Company, Limited

Masafumi Taguchi

Takashi Kishimoto

Tetsuo Minaai

Tomihisa Saito

Yoshiyuki Uemura

Shinji Kawamoto

Daisuke Inaoka

Kazuya Fujino

Vladimir Victrovich Serikov

Kozo Fujimura

Kozo Fujino

Provided is a glass panel capable of, even after elapse of a long period, reliably sealing a suction hole and keeping a gap in an airtight state. A suction hole sealing metal materialhas a first protruding portionformed on an atmospheric side around a suction hole, and a second protruding portionformed on a gap side around the suction hole, and as seen in a thickness direction of the glass platesA,B, a first contourwhich is an outermost edge of a first adhesion surface portion Swhere the first protruding portionis in contact with an atmospheric-side surfaceA of the glass plateA, and a second contourwhich is an outermost edge of a second adhesion surface portion Swhere the second protruding portionis in contact with a gap-side surfaceB of the glass plateA, are on an outer side of a third contourwhich is a gap-side hole edge of the suction hole

Glass panel

A light guideof a rectangular cross-section has side facesincluding short sides in the longitudinal direction of which one side faceis provided with a light-scattering pattern, formed by screen-printing in white paint, for scattering the light incident to the light guide. The other side facefacing the side faceis exposed from a casingto serve as a light-emitting surface. In the present embodiment, it is possible to secure a sufficient amount of light because the whole area of the side face is used as the light-emitting surface. The remaining side facesof the light guideare side faces including the long sides. Since the side faceseasily produce a surface sink during molding, neither the light-scattering patternnor the light-emitting surface is provided thereon.

Line-illuminating device and image sensor

A light guide is provided at the reverse side thereof with triangular uneven surfaces at a predetermined pitch. The uneven surfaces are integrally formed with the light guide when the latter is injection-molded. Incident light from a light incident plane is caused to be scattered at uneven surfaces within the light guide and to spread in a main scanning direction. The light scattered is emitted from an emission plane. Intensity of light in the main scattering direction can be made uniform by lengthening the uneven surfaces as the uneven surfaces extend from the light incident plane. A position where the light intensity becomes maximum in a sub-scanning direction can be changed by adjusting an angle between the ridgeline of the uneven surfaces and the sub-scanning direction, and distributed characteristics of the light intensity in the sub-scanning direction can be also changed.

Light guide and line illuminating device

Growing community of inventors

Osaka, Japan

Masafumi Taguchi