Mitsubishi Electric Corporation

Sankyo Company, Limited

Dai Nippon Printing Co., Ltd.

Mitsubishi Electronic Corporation

Masatoshi Nishimura

Akihiro Yamada

Masaaki Takahashi

Jun Kondo

Muneharu Kuwata

Ritsuya Oshima

Satoru Okagaki

Junya Eguchi

Mitsuhiro Kuzuhara

Yousuke Kousaka

Nobuaki Nakatsubo

Yasushi Orihashi

Takayuki Fukuda

Nobuyuki Tobe

Masahiro Torimoto

The present invention provides an optical layered body having excellent scratch resistance while having antireflective performance. The present invention relates to an optical layered body including a light-transmitting substrate; and at least an antiglare layer and a low refractive index layer disposed in the stated order on one surface of the light-transmitting substrate, wherein the low refractive index layer has an arithmetic average roughness Ra of projections and depressions of 4 nm or less and a ten-point average roughness Rz of the projections and depressions of 60 nm or less, where the Ra and the Rz are measured in any 5-μm square region of a surface of the low refractive index layer.

Optical layered body having specified average roughness and surface hardness

First light is incident on a diffuser, and scattered light emerges from the diffuser. The diffuser includes one light incident surface on which the first light is incident in a first direction and a first light transmitting surface. The light incident surface is formed on an end surface of the diffuser. First transmitted light emerges from the first light transmitting surface. Second transmitted light emerges from second light transmitting surface that is a surface other than the first light transmitting surface of the diffuser. Intensity of the first transmitted light increases as a direction in which the first transmitted light emerges approaches the first direction. Correlated color temperature of the first light is lower than correlated color temperature of the first transmitted light and higher than correlated color temperature of the second transmitted light.

Diffuser and lighting apparatus

An illumination device includes a light source unit that emits light, a first optical unit that lets the light enter and changes a divergence angle of the entered light, a second optical unit including an image light formation unit that lets the light with the changed divergence angle enter and emits light including image light having image information, and a drive unit that moves the first optical unit and the second optical unit.

Illumination device

A light source device includes a light source, a wavelength conversion member, and a retroreflective optical member. The light source emits excitation light. The wavelength conversion member includes a first region irradiated with the excitation light and radiates, from the first region, converted light having a wavelength different from that of the excitation light. The retroreflective optical member reflects the converted light toward the first region. The first region is a region that is a part of the wavelength conversion member.

Light source device, lighting apparatus, and vehicle lamp device

An illumination device includes a light source; a light condensing element for concentrating light from the light source onto a light concentration position; a plate for receiving light from the light condensing element and transmitting such light; a phosphor element for receiving light from the light source at the light concentration position; and a lens for projecting light from the plate. The plate is configured to rotate about an axis perpendicular to an optical axis of the lens to shift the light concentration position, which is between the plate and the lens, in a direction perpendicular to the optical axis of the lens.

Headlight with illumination device having rotatable transmissive element for shifting light concentration position

An apparatus for measuring arterial elasticity includes a cuff member having a light source and light detector, a variable pressure generating device, a fluid pressure sensor, a digital signal processor and a difference detecting element. The fluid pressure in a fluid pressure chamber in the cuff member is varied by a variable fluid pressure generating device. The digital signal processor responds to the output of the fluid pressure sensor and the output of the difference detecting element and delivers a digitally processed signal corresponding to an arterial volume change based on a simulated arterial elasticity. The arterial elasticity and the frequency characteristic thereof are derived based on the operation of the digital signal processor.

Measurement of arterial elasticity and the frequency characteristic of

A device for measuring a transmission velocity of a pulse wave includes sensors for sensing heart sounds, and pulse wave signals at upstream and downstream sides of a blood flow. Analog to digital conversion circuitry, coupled to the sensors, converts signals from the sensors from analog to digital form. A data processor, coupled to the analog to digital conversion circuitry processes data received from the analog to digital conversion circuitry. A display device, coupled to the data processor, displays waveforms and numerical data received from the data processor. The data processor includes seven processing units. A first processing unit, coupled to the analog to digital conversion circuitry, detects a first heart sound and generates a marker signal. Second and third processing units, coupled to the analog to digital conversion circuitry, transform digital signals received from the analog to digital conversion circuitry into data for display. A fourth processing unit, coupled to the first, second, and third processing units, detects the marker signal from the first processing unit and obtains predetermined data from the data received from the second and third processing units. A fifth processing unit, coupled to the second and third processing units, temporarily stores data received from the second and third processing units. A sixth processing unit, coupled to the fourth processing unit, determines a transmission time of a pulse wave to derive a transmission velocity of the pulse wave. A seventh processing unit, coupled to the sixth processing unit, transforms signals from the sixth processing unit for display.

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Tokyo, Japan

Masatoshi Nishimura