Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Mika Sakaue

Yuriko Kaneko

Kazuaki Ohkubo

Mitsuhiko Kimoto

Makoto Horiuchi

A reflective plateis arranged so as to reflect infrared rays, radiated from a heating wire, outside of a heaterand may be made of steel. A number of cavitiesare arranged on the surface of the reflective plate. Since the cavitieshave an aspect ratio of 0.17 to 0.7, the infrared reflectance can be increased compared to a reflector with no cavities.

Reflector and apparatus including the reflector

An energy converter according to the present invention includes a heat source (radiator), which receives externally applied energy and raises its temperature, thereby emitting electromagnetic radiations, and a radiation cut portion (mesh) for cutting down infrared radiations, of which the wavelengths are longer than a predetermined wavelength. The meshis a woven or knitted mesh of metal wires. The openings of the woven or knitted mesh have an aperture size that is smaller than the predetermined wavelength.

Energy converter and method of making the same

An energy converter according to the present invention includes a filamentfor converting given energy into electromagnetic waves and radiating the waves, and a radiation suppressing portion for suppressing some of the electromagnetic waves (e.g., infrared rays), which have been radiated from the filamentand of which the wavelengths exceed a predetermined value. The radiation suppressing portion has a bundleof fine wires, of which the axial direction is aligned with a direction in which the electromagnetic waves propagate with their radiations suppressed.

Energy converter and light source

An incandescent bulb filament having a flat Light-emitting surface and high Lamp efficiency and an incandescent bulb using this filament are provided. This incandescent bulb filament is characterized in that it is a filament of ribbon shape placed on one plane, and it includes: spaced portions which are placed side by side with spaces; and connecting portions which connect the spaced portions electrically in series. Each spaced portion has a thickness that is one half the width of the spaced portion or more, and the space between at least one pair of adjacent spaced portions is less than five times the width of the spaced portion.

Growing community of inventors

Hirakata, Japan

Mika Sakaue