Asahi Glass Company, Limited

Mitsuo Osawa

Makoto Hasegawa

Katsushi Kamijyo

Takashi Shibuya

Hiroshi Shimoda

Hiroshi Kumai

Keisuke Abe

Satoshi Kashiwabara

Kenta Sekikawa

Hiroyuki Arishima

Wakako Ito

Masahiro Mori

Yoshiharu Ooi

Atsushi Matsuo

Shuichi Yamashita

Mitsuyuki Tatemura

Haisheng Zeng

Atsushi Kawamori

Katsushi Miyake

The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than &#x2212;0.8.

Optical filter, solid-state imaging element, imaging device lens and imaging device

The present invention relates to a microlens array comprising a transparent substrate, a resin layer provided on/above at least one surface of the transparent substrate, containing a photosensitive resin and forming a plurality of microlenses, and a functional layer reflecting at least light for reacting the photosensitive resin, the functional layer is formed on a surface of the transparent substrate at a side on which the resin layer is not formed, or on the surface of the transparent substrate at the side on which the resin layer is formed and at a position nearer the transparent substrate than the resin layer.

Microlens array, image pickup element package, and method for manufacturing microlens array

An optical member has: a transparent substrate; and a dielectric multilayer on the transparent substrate formed by stacking a plurality of unit refractive index layers each formed of a high-refractive index layer having a refractive index of 2 or more and a low-refractive index layer having a refractive index of 1.6 or less. In the optical member, a total number of the unit refractive index layers is 15 or more, and a number of the unit refractive index layers satisfying a condition of nd/nd&#x2267;3 is 10 or more, ndrepresents an optical thickness of the high-refractive index layer, and ndrepresents an optical thickness of the low-refractive index layer.

Optical member

Disclosed is an optical member in the form of a film or a thin plate. The optical member contains near infrared absorbing particles comprising crystallites of an oxide containing at least Cu and P and having a number average aggregated particle size of at least 20 nm and at most 200 nm. Further, a near infrared cut filter, a solid-state imaging element, a lens for an imaging device and an imaging/display device are disclosed. They comprise a near infrared absorbing layer containing near infrared absorbing particles comprising crystallites of an oxide containing at least Cu and P and having a number average aggregated particle size of at least 20 nm and at most 200 nm.

Optical member, near infrared cut filter, solid-state imaging element, lens for imaging device, and imaging/display device using the same

To provide near-infrared-absorbing particles which have a high transmittance in the visible light region and a low transmittance in the near infrared region and which, when incorporated, can give a near-infrared-absorbing coating film wherein the transmittance sharply changes in the wavelength range of from 630 to 700 nm; a process for their production; and their dispersion. Near-infrared-absorbing particles consisting essentially of crystallites of ACuPOand having a number average aggregated particle size is from 20 to 200 nm, wherein A is at least one member selected from the group consisting of alkali metals (Li, Na, K, Rb and Cs), alkaline earth metals (Mg, Ca, Sr and Ba) and NH, and n is 1 when A is an alkali metal or NH, or 2 when A is an alkaline earth metal.

Near-infrared-absorbing particles, process for their production, dispersion, and article thereof

A projection type display device includes: a light emitting unit that includes at least one light source for emitting a coherent light. An image light generating unit modulates the light emitted by the light emitting unit to generate an image light. A projecting unit projects the image light. A phase modulating unit is arranged either between the light emitting unit and the image light generating unit or between the image light generating unit and the projecting unit and has an area where at least one of a retardation value and an azimuth direction of a slow axis is distributed respectively in different directions or values in a plane orthogonal to an optical axis.

Projection type display device with a phase modulating unit

A liquid crystal diffraction lens element and an optical head device, which can switch focal lengths of both of outgoing light and returning light by a single element, are provided. The liquid crystal lens element comprises transparent substrates, a liquid crystalsandwiched between the transparent substrates, transparent electrodes, birefringent Fresnel lens memberseach having a Fresnel lens shape and made of a birefringent material, and a seal, wherein the extraordinary refractive index direction A of the birefringent Fresnel lens memberand the extraordinary refractive index direction B of the birefringent Fresnel lens memberare perpendicular to each other, and the alignment direction of the liquid crystalat the interface between the liquid crystaland the transparent substrateis perpendicular to the alignment direction of the liquid crystalat the interface between the liquid crystaland the transparent substrate

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Tokyo, Japan

Mitsuo Osawa