Abstract:
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 lens 1 has 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 lens 1 and a diffuser panel that diffuses emitted light from the lens 1.
Abstract:
An optical film, comprising a substrate, wherein a first plurality of multi-faceted recesses are formed on the substrate, wherein the plurality of multi-faceted recesses are capable of scattering lights that enter into a second surface of the substrate, said first surface and said second surface are two opposite surfaces of the substrate.
Abstract:
A heat-insulation material does not cause deterioration in heat-insulation performance and any loss of components included therein, and possesses an excellent radiation-preventing function. The heat-insulation material includes: a first heat-insulation layer that includes a fist silica xerogel and a first radiation-preventing material; and a third heat-insulation layer that includes a third silica xerogel and second fibers, wherein the first heat-insulation layer and the third heat-insulation layer are layered. An electronic device includes the heat-insulation, material. Yet further disclosed is a method for producing the heat-insulation material.
Abstract:
Provided is a light-shielding material for use in optical instrument and having a light-shielding sheet with broad low-gloss region while maintaining the physical properties necessary for a light-shielding sheet. The light-shielding material 1 comprises a light-shielding sheet 4 on a substrate 2, and the surface properties of the light-shielding sheet 4 are adjusted so as to fulfill at least one of A1 and A2, and at least one of B1 and B2. A1 is the condition that the arithmetic average roughness Sa in a three-dimensional surface roughness measurement is 0.4 or larger and 2.0 or smaller, A2 is that the ten-point average roughness Sz in a three-dimensional surface roughness measurement is 1 or larger and 20 or smaller. Defining a central plane of projections and recesses in a three-dimensional surface roughness measurement as a reference plane, Pn (n is any positive integer) as the number of projections which protrude to a plane located at a height of n times Sa from the reference plane, Pn+1 as the number of projections which protrude to a plane located at a height of (n+1) times Sa, and Rn as the ratio (Pn+1/Pn) of Pn and Pn+1, B1 is the condition that R1 is 55% or greater and R4 is 7% or greater, and B2 is the condition that at least R1 is 55% or greater, R2 is 15% or greater and R3 is 8% or greater.
Abstract:
A method for estimating an optical, electromagnetic or acoustic image having at least the successive steps of: scattering an incident optical, electromagnetic or acoustic signal using a multiple scattering medium corresponding to a known transmission matrix stored into a memory of an imaging system; measuring the scattered signal using a detector array and storing the measurements into the memory of the imaging system; and determining an estimated image having a number of image elements that is greater than the number of measurements, at full spatial bandwidth. The estimated image is determined from the measurements and the transmission matrix using a sparsity-promoting algorithm.
Abstract:
To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.
Abstract:
A light beam emission system includes a blower that forms a flow path in which aerosol flows, an emitter that emits a laser beam, and a light guide that guides the laser beam to the flow path in which the aerosol flows. The light guide is hollow, and at least a part of the laser beam passing through the light guide and guided to the flow path propagates along the flow path of the aerosol.
Abstract:
There is provided an optical body with improved antireflection capability, a display device, and a method for manufacturing an optical body, the optical body including: a first concave-convex structure formed on a surface of a base material; and a second concave-convex structure superimposed on the first concave-convex structure. An average concave-convex period of the first concave-convex structure is larger than a wavelength in a visible light region, an average concave-convex period of the second concave-convex structure is less than or equal to the wavelength in the visible light region, and projecting parts of the second concave-convex structure extend in a direction normal to a flat plane of the base material.
Abstract:
A head up display system presents a virtual image to a human driver of a motor vehicle. A plurality of light emitting devices are substantially aligned in a row and each emits light. There is a direct relationship between an electrical current drawn by each individual light emitting device and a distance each individual light emitting device is disposed from a center of the row. At least one mirror reflects the light emitted by the light emitting devices toward a windshield of the motor vehicle such that the light is reflected by the windshield and is visible to the human driver as the virtual image.
Abstract:
A optical apparatus to display an image to a user is disclosed. The apparatus comprises an image source to generate an image bearing light beam having a first numerical aperture; and a diffuser screen. The diffuser screen is configured to increase the numerical aperture of the image bearing light beam to a second numerical aperture. The diffuser screen comprises a first part comprising: a first face and second face substantially parallel to each other, a first array of a plurality of waveguides forming an optical path between the first face and the second face. A value of an optical property of each of the plurality of waveguides is selected randomly from a set of values of the optical property. The first array of a plurality of waveguides is arranged such that each of the plurality of waveguides has an optical axis that is substantially parallel to it's nearest neighbour. Substantially all the waveguides of the first array are sized below a size that would allow a single mode of visible light to propagate along each waveguide