Scivax Corporation.

Nikkiso Company Limited

Akifumi Nawata

Satoru Tanaka

Tetsuhiko Inazu

Noritaka Niwa

Yasumasa Suzaki

Nobuyoshi Awaya

A lens and an optical system device are provided which can measure optical characteristics of a light source or an optical element with a simple structure. A lenshas an optical axis, and includes an incident surface F and an emit surface B. The incident surface F and the emit surface B are formed so as to emit incident light to the incident surface F from a first position O at an irradiation angle θ relative to the optical axis from the emit surface B at an emit angle θ/m (where m>1) relative to the optical axis by refraction at the incident surface F and at the emit surface B, and formed in such a way that apparent positions of lights emitted from the emit surface B all begin from a second position P. Moreover, an optical system device includes the lensand a diffuser panel that diffuses emitted light from the lens

Lens and optical system device

A semiconductor light emitting device includes a light extraction layer having a light extraction surface. The light extraction layer includes: a plurality of cone-shaped parts formed in an array on the light extraction surface, and a plurality of granular parts formed both on a side part of the cone-shaped part and in a space between adjacent cone-shaped parts. A method of manufacturing the semiconductor light emitting device includes: forming a mask having an array pattern on the light extraction layer; and etching the mask and the light extraction layer from above the mask. The etching includes first dry-etching performed until an entirety of the mask is removed and second dry-etching performed to further dry-etch the light extraction layer after the mask is removed.

Semiconductor light emitting device and method of manufacturing semiconductor light emitting device having pattered light extraction surface

A semiconductor light emitting device includes a light extraction layer having a light extraction surface. Multiple cone-shaped parts formed in an array are provided on the light extraction surface of the semiconductor light emitting device. A proportion of an area occupied by the multiple cone-shaped parts per a unit area of the light extraction surface is not less than 65% and not more than 95% in a plan view of the light extraction surface, and an aspect ratio h/p defined as a proportion of a height h of the cone-shaped part relative to a distance p between apexes of adjacent cone-shaped parts is not less than 0.3 and not more than 1.0.

Semiconductor light emitting device and method of manufacturing semiconductor light emitting device

A semiconductor light emitting device includes a light extraction layer having a light extraction surface. Multiple cone-shaped parts formed in an array are provided on the light extraction surface. The cone-shaped part has a first portion having a first angle of inclination of a side surface and a second portion having a second angle of inclination of a side surface smaller than the first angle. The second portion is closer to an apex of the cone-shaped part than the first portion and has a larger height than the first portion.

An optical device including at least a part of a rotation body acquired by rotating a reference plane shape or a parallelly shifted body acquired by parallelly shifting the reference plane shape, the reference plane shape including an incidence portion allowing light from a predetermined site to enter, an emit portion that reflects the light which has traveled through the incidence portion and which is directly irradiated and a first reflection portion that reflects the reflected light by the emit portion toward the emit portion. The reference plane shape may include a second reflection portion that reflects the light which has traveled through the incidence portion and which is directly irradiated to the emit portion. An optical system apparatus includes a light source placed at the predetermined site.

Optical device and optical system apparatus

An optical component capable of sufficiently reducing reflection of light by controlling a change in refractive index, even if incident angle of light varies. An optical component includes a base, a moth-eye structure with predetermined concavities and convexities, and at least one buffer layer provided between the base and the moth-eye structure. A change in refractive index between the base and a medium is adjusted by the buffer layer and the moth-eye structure.

Growing community of inventors

Kawasaki, Japan

Akifumi Nawata