Abstract: An electromagnetic flux controlling member includes a first region disposed on a rear side, and configured to allow incidence of electromagnetic waves or to emit to outside electromagnetic waves having travelled inside, and a second region disposed on a front side, and configured to emit to the outside the electromagnetic waves entered from the first region or to allow incidence of electromagnetic waves. The second region includes a plurality of circular parts concentrically disposed in plan view, outer edges of the plurality of circular parts are disposed such that the outer edges of the plurality of circular parts come closer to the rear side with increasing distance from a central axis side, and widths of at least some circular parts adjacent to each other of the plurality of circular parts are the same, and are smaller than a wavelength of the electromagnetic waves.

Abstract: An electromagnetic flux controlling member includes an incidence surface for allowing incidence of an electromagnetic wave, and an emission surface for emitting the electromagnetic wave incident on the incidence surface to an outside. At least one of the incidence surface and the emission surface includes a base curved surface and a plurality of protrusions arranged on the base curved surface. Each of the plurality of protrusions includes a conical tip portion disposed such that at least a part of an edge of a bottom surface of the conical tip portion makes contact with the base curved surface, and a partially columnar leg portion disposed between the conical tip portion and the base curved surface. A central axis of the conical tip portion and a central axis of the partially columnar leg portion are parallel to a main axis of the electromagnetic flux controlling member.

Abstract: A polarizer according to the present invention includes a thin film with a constant thickness composed of a dielectric, and a plurality of slit-shaped through-holes each having the same width formed in the thin film and extending in a first direction. The plurality of through-holes are arranged on a surface of the thin film at a constant interval in a second direction perpendicular to the first direction.

Abstract: A polarizer according to the present invention includes a thin film with a constant thickness composed of a dielectric, and a plurality of slit-shaped through-holes each having the same width formed in the thin film and extending in a first direction. The plurality of through-holes are arranged on a surface of the thin film at a constant interval in a second direction perpendicular to the first direction.

Abstract: Provided is a light-guiding substrate that can propagate light, which has been emitted by means of a light emitting device, in a confined state with an efficiency as high as possible. An optical system provided with the light-guiding substrate is also provided.

Abstract: A light guide panel 1 having a reflective sub-wavelength diffraction grating 3 generates zero-order light and minus first-order light in the reflective sub-wavelength diffraction grating 3, extracts the minus first-order light as outgoing light, and transmits the zero-order light to generate new minus first-order light by satisfying the conditional expressions: sin?1(1/n)<?1??(1) ?/{n(sin ?1+1)}??<min[2?/{n(sin ?1+1)},?/{n(?sin ?1+1)}]??(2) sin?1{sin ?1??/(n·?)}<sin?1(1/n)??(3) where, ?: wavelength of light n: refractive index of a light guide panel main body ?: period of the reflective sub-wavelength diffraction grating ?1: angle of incidence of the light in relation to the reflective sub-wavelength diffraction grating.

Abstract: Disclosed is an optical apparatus that allows a target pattern to be imaged adequately at low cost and allows the apparatus to be miniaturized. With this optical apparatus (1), light L output from one light source (2) is collimated through a collimation lens (3) and divided into first light beams L1L and L1R by a diffractive optical element (4), and, by a computer-generated hologram (5), first light beams L1L and L1R are each divided into second light beams L2LO, L2LI, L2RI and L2RO, and these second light beams L2LO, L2LI, L2RI and L2RO form a guide pattern whereby whether or not a focused state is achieved cane be decided.

Abstract: Provided is a light-guiding substrate that can propagate light, which has been emitted by means of a light emitting device, in a confined state with an efficiency as high as possible. An optical system provided with the light-guiding substrate is also provided.

Abstract: Disclosed is an optical apparatus that allows a target pattern to be imaged adequately at low cost and allows the apparatus to be miniaturized. With this optical apparatus (1), light L output from one light source (2) is collimated through a collimation lens (3) and divided into first light beams L1L and L1R by a diffractive optical element (4), and, by a computer-generated hologram (5), first light beams L1L and L1R are each divided into second light beams L2LO, L2LI, L2RI and L2RO, and these second light beams L2LO, L2LI, L2RI and L2RO form a guide pattern whereby whether or not a focused state is achieved cane be decided.

Abstract: A polarizer includes including a translucent substrate a diffraction grating which is formed on the translucent substrate and which has a plurality of convex portions that are aligned so as to have a frequency which is equal to or less than a wavelength of light to be used, and in which each of the plurality of convex portions includes an alternating layer formed of high-refractive-index layers and low-refractive-index layers, and an intermediate-refractive-index region which is formed at a position between the convex portions that are adjacent to each other in the diffraction grating, so as to have a portion buried in the translucent substrate and which has a refractive index which is higher than a refractive index of the low-refractive-index layer and which is lower than a refractive index of the high-refractive-index layer.

Abstract: It is to provide a reflective polarizer which can be made easily and which is of high performance. The polarizer includes a translucent substrate 8; a diffraction grating 12 which is formed on the translucent substrate 8 and which has a plurality of convex portions 9 that are aligned so as to have a frequency which is equal to or less than a wavelength of light to be used, and in which each of the plurality of convex portions 9 includes the alternating layer formed of high-refractive-index layers 10 and low-refractive-index layers 11; and an intermediate-refractive-index region 14 which is formed at a position between the convex portions 9 that are adjacent to each other in the diffraction grating 12, so as to have a portion buried in the translucent substrate 8 and which has a refractive index which is higher than a refractive index of the low-refractive-index layer 11 and which is lower than a refractive index of the high-refractive-index layer 10.

Abstract: There are provided a thin wire grid polarizer having a high transmittance, a high quenching ratio and a high degree of polarization, and a method for producing the same at low costs. A fluoridated polyimide thin film 12, a hydrophilic thin film 13 and a hydrophobic thin film 14 are sequentially stacked on a glass substrate 11 to be pressed by a die 1 from the side of the hydrophobic thin film 14 to transfer the fine pattern of groove forming protrusions 3 of the die 1 to the hydrophobic thin film 14 and hydrophilic thin film 13 by the nano-imprinted lithography technique, and then, metal fine wires are caused to grow by plating.

Abstract: The object of the present invention is to provide an excellent-quality polarization phase difference plate that enables, by a simple structure: decrease in light loss and in oscillation of the intensity of the transmitting emission light through effectively suppressing Fresnel reflection in the polarization phase difference plate; improvements in the optical property, cut in the cost; and decrease in the manufacture inferior. In the polarization phase difference plate, cross-sectional shape of the convex part is formed in a taper shape from the bottom part thereof towards the top part; a flat part is formed at least between the convex parts being adjacent to each other; and the period of the diffraction grating is formed in a size that is equal to or smaller than the wavelength of light to be used.

Abstract: The object of the present invention is to provide an excellent-quality polarization phase difference plate that enables, by a simple structure: decrease in light loss and in oscillation of the intensity of the transmitting emission light through effectively suppressing Fresnel reflection in the polarization phase difference plate; improvements in the optical property, cut in the cost; and decrease in the manufacture inferior. In the polarization phase difference plate, cross-sectional shape of the convex part is formed in a taper shape from the bottom part thereof towards the top part; a flat part is formed at least between the convex parts being adjacent to each other; and the period of the diffraction grating is formed in a size that is equal to or smaller than the wavelength of light to be used.

Abstract: There are provided a thin wire grid polarizer having a high transmittance, a high quenching ratio and a high degree of polarization, and a method for producing the same at low costs. A fluoridated polyimide thin film 12, a hydrophilic thin film 13 and a hydrophobic thin film 14 are sequentially stacked on a glass substrate 11 to be pressed by a die 1 from the side of the hydrophobic thin film 14 to transfer the fine pattern of groove forming protrusions 3 of the die 1 to the hydrophobic thin film 14 and hydrophilic thin film 13 by the nano-imprinted lithography technique, and then, metal fine wires are caused to grow by plating.

Abstract: An object is to provide a wire grid polarizer with an excellent optical property, which enables to maintain the polarization extinction ratio high and level in the broadband wavelength region with a simple structure. A wire grid polarizer of the present invention comprises, a wire grid structural body in which a plurality of metal wires are formed and arranged at a certain period in a direction orthogonal to a longitudinal direction of the metal wires on a light-transmitting substrate, for transmitting only a specific linearly polarized light out of linearly polarized lights being orthogonal to each other, which make incident to the wire grid structural body, wherein a cross-sectional shape of the metal wire, which is orthogonal to the longitudinal direction, has a taper shape.

Abstract: An object is to provide a wire grid polarizer with an excellent optical property, which enables to maintain the polarization extinction ratio high and level in the broadband wavelength region with a simple structure. A wire grid polarizer of the present invention comprises, a wire grid structural body in which a plurality of metal wires are formed and arranged at a certain period in a direction orthogonal to a longitudinal direction of the metal wires on a light-transmitting substrate, for transmitting only a specific linearly polarized light out of linearly polarized lights being orthogonal to each other, which make incident to the wire grid structural body, wherein a cross-sectional shape of the metal wire, which is orthogonal to the longitudinal direction, has a taper shape.

Abstract: There are provided a thin wire grid polarizer having a high transmittance, a high quenching ratio and a high degree of polarization, and a method for producing the same at low costs. A fluoridated polyimide thin film 12, a hydrophilic thin film 13 and a hydrophobic thin film 14 are sequentially stacked on a glass substrate 11 to be pressed by a die 1 from the side of the hydrophobic thin film 14 to transfer the fine pattern of groove forming protrusions 3 of the die 1 to the hydrophobic thin film 14 and hydrophilic thin film 13 by the nano-imprinted lithography technique, and then, metal fine wires are caused to grow by plating.