Optical element and method of manufacturing optical element
AssigneeKonica Minolta, Inc.
InventorsKazuhiro Wada, Hideyuki Fujimori
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Abstract
An optical element is configured to transmit a light flux emitted from a light source having a single light source wavelength, and is formed from a material in which resin and glass fillers are mixed. A difference between respective refractive index change rates (dn/dT) of the resin and the glass fillers relative to a temperature change at least in a vicinity of the light source wavelength becomes 10.5×105 or less.
Claims18
An optical element that transmits a light flux emitted from a light source having a single light source wavelength,
- wherein the optical element is formed from a material in which resin and glass fillers are mixed, and a difference between respective refractive index change rates (dn/dT) of the resin and the glass fillers relative to a temperature change at least in a vicinity of the light source wavelength becomes 10.5×10−5 or less.
An optical element that transmits a light flux emitted from a light source having a single light source wavelength,
- wherein the optical element is formed from a material in which resin and glass fillers are mixed, and a difference between respective linear expansion coefficients of the resin and the glass fillers at least in an operating temperature range of the optical element becomes 6.0×10−5 or less.
A method of manufacturing an optical element that transmits a light flux emitted from a light source having a single light source wavelength and is formed from a material in which resin and glass fillers are mixed, the method comprising:
- mixing resin and glass fillers such that a difference between respective refractive index change rates (dn/dT) of the resin and the glass fillers relative to a temperature at least in a vicinity of the light source wavelength change becomes 10.5×10−5 or less;
- injecting the mixed materials into a cavity formed in a mold;
- cooling the mixed material in the mold so as to mold an optical element;
- and
- taking out the molded optical element.
A method of manufacturing an optical element that is configured to transmit a light flux emitted from a light source having a single light source wavelength and is formed from a material in which resin and glass fillers are mixed, the method comprising:
- mixing resin and glass fillers such that a difference between respective linear expansion coefficients of the resin and the glass filler at least in an operating temperature range of the optical element becomes 6.0×10−5 or less;
- injecting the mixed materials into a cavity formed in a mold;
- cooling the mixed material in the mold so as to mold an optical element;
- and
- taking out the molded optical element.
Dependencies are inferred from the claim text.