An optical laminate is provided, wherein stable durability is secured even at a high temperature, particularly an ultra-high temperature of about 100° C. or more, other physical properties required for the optical laminate are also excellent, and even in the case of being disposed adjacent to the electrode, corrosion of the relevant electrode or the like is not induced.

Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.

The present application relates to a circularly polarizing plate. The present application can provide a circularly polarizing plate which can improve a reflection color sense by using a retardation film having flat dispersion characteristics. In addition, the present application can provide an OLED device comprising the circularly polarizing plate.

An optical assembly a substrate having a first surface and a second surface that is opposite to and substantially parallel with the first surface. The first surface has a first curved profile and the second surface has a second curved profile. The optical assembly also includes a beam splitter on the first surface and a reflector on the second surface. The optical assembly is configured to transmit image light received at the first surface in an optical path that includes reflection at each of the reflector and the beam splitter before the image light is output from the second surface. The optical assembly is also configured to transmit ambient light received at the first surface such that the second light is output from the second surface without undergoing reflection at either the reflector or the beam splitter. A method of transmitting light through the optical assembly is also disclosed.

There is provided an electronic device capable of suppressing a decrease in resolution of a captured image while increasing types of information obtained by an imaging unit. An electronic device includes an imaging unit that includes a plurality of pixel groups each including two adjacent pixels, in which at least one first pixel group of the plurality of pixel groups includes a first lens that condenses incident light, a first photoelectric conversion unit that photoelectrically converts a part of the incident light condensed through the first lens, and a second photoelectric conversion unit different from the first photoelectric conversion unit that photoelectrically converts a part of the incident light condensed through the first lens, and at least one second pixel group different from the first pixel group among the plurality of pixel groups includes a second lens that condenses incident light, a third photoelectric conversion unit that photoelectrically converts the incident light condensed through the second lens, and a third lens different from the second lens that condenses the incident light, a fourth photoelectric conversion unit different from the third photoelectric conversion unit that photoelectrically converts the incident light condensed through the third lens.

A viewing angle control system is used in combination with a high-definition image display device and sufficiently shields light emitted in a direction oblique to a normal direction of a film. The viewing angle control system includes at least a first polarizer, a retardation layer, and a second polarizer in this order, where an absorption axis of the first polarizer forms an angle of 45° or greater with respect to a surface, the retardation layer satisfies Expression (1): an in-plane retardation Re of the retardation layer satisfies an expression of 80 nm<Re<250 nm, and Expression (2): in a case of Nz=Rth/Re+0.5, an expression of 1.5<Nz<6 or −5<Nz<−0.5 is satisfied, where Rth represents a retardation of the retardation layer in a thickness direction, and the second polarizer has an absorption axis in an in-plane direction.

There are provided a linearly polarized light reflection film that has a high visible light transmittance, is capable of increasing the brightness of a display image, and is highly transparent in terms of appearance tint, a windshield glass, and a head-up display system. The linearly polarized light reflection film has a selectively reflecting layer in which an optically anisotropic layer and an isotropic layer are laminated. The selectively reflecting layer has at least one first reflection peak having a reflection center wavelength of 430 nm or more and less than 500 nm and having a reflectivity of 10% or more and 20% or less, at least one second reflection peak having a reflection center wavelength of 530 nm or more and less than 600 nm and having a reflectivity of 10% or more and 20% or less, and a third reflection peak having a reflection center wavelength of 600 nm or more and 800 nm or less, where two or more reflection peaks are present with a reflectivity of 10% or more and 20% or less or one reflection peak is present with a reflectivity of 10% or more and 20% or less and a wavelength width of 120 nm or more.

The present application relates to a polarizing plate having a polarizing film in which a light absorption axis is formed in one in-plane direction; a protective film formed on one side of the polarizing film; and a pressure-sensitive adhesive layer formed on the other side of the polarizing film, where the total thickness is 200 μm or less, and a ratio of (S.sub.Pro/S.sub.PVA) of a shrinkage force (S.sub.PVA) of the polarizing film in the in-plane direction parallel to the light absorption axis direction and a shrinkage force (S.sub.Pro) of the protective film in the in-plane direction perpendicular to the light absorption axis direction is in a range of 0.1 to 5. The present application can provide a polarizing plate which does not cause cracks or the like while having a thin thickness, does not induce warping or twisting in itself and does not induce the above problems even when applied to a display device such as an LCD or OLED.

A curved reflective has at least one location having a radius of curvature in a range from about 6 mm to about 1000 mm. Each location on the reflective polarizer has a maximum reflectance greater than about 70% for a block polarization state, a maximum transmittance greater than about 70% for an orthogonal pass polarization state, and a minimum transmittance for the block polarization state. For a continuous first portion of the reflective polarizer extending between different first and second edges of the reflective polarizer and defining disjoint second and third portions of the reflective polarizer, the minimum transmittance of the reflective polarizer for the block polarization state is higher at each location in at least 70% of the first portion than at each location in at least 70% of the second portion and at each location in at least 70% of the third portion.

An optical assembly including a first optical substrate including a first major surface; a multilayer polymeric optical film disposed on the first major surface of the first optical substrate and including a plurality of polymeric layers numbering greater than about 50 in total; and a first optical bonding layer having an average thickness of less than about 0.5 microns and disposed between, and making physical contact to, the first major surface of the first optical substrate and the multilayer polymeric optical film, the first optical bonding layer bonding the first optical substrate to the multilayer polymeric optical film and including a silanated amine.