Konica Minolta, Inc.

Otsuka Pharmaceutical Company, Limited

Seiji Yuasa

Yoshihiro Okumura

Takehiko Goshima

Hiroshi Umetsu

To provide a method for manufacturing an optical element, which improves the surface precision of the optical surface as well as reducing the birefringence at a low cost. A method for manufacturing an optical elementA having optical surfacesandand a non-optical surfaceA that is adjacent to the optical surfacevia a ridge by injection molding includes forming the non-optical surfaceA with a mold surface. The mold surface includes a sink forming areaas a first area having a first surface roughness, and a high transfer areaas a second area having a second surface roughness different from the first surface roughness. The second area is located outside the first area.

Optical element and method for manufacturing optical element

A prism () is configured from a dielectric medium and is used in analysis using surface plasmons. The prism () is provided with an incidence surface () on which excitation light from outside is incident, a reflection surface () on which excitation light having entered the incidence surface () is reflected, an emission surface () from which excitation light reflected by the reflection surface () is emitted, and an opposing surface () opposing the reflection surface (). A gold film () is formed on the reflection surface (). The opposing surface () has a sink-mark surface (), and the sink-mark surface () is a transparent surface.

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Tama, Japan

Seiji Yuasa