Abstract: An object of the present invention is to provide an optical laminate that can be used for a reflective circular polarizer with little occurrence of a ghost in a case of being used in a virtual reality display device, an electronic finder, or the like, a laminated optical film including the reflective circular polarizer, an optical article including the optical laminate, and a virtual reality display device including the optical article.

Abstract: An object of the present invention is to provide a forming method capable of obtaining an optical film in which occurrence of ghost can be suppressed in a case of being used in, for example, a virtual reality display apparatus; an optical film; a cholesteric liquid crystal layer; an optical laminate; and a production method of a curved-shaped optically functional layer. The object is achieved by a forming method including a heating step of heating an optical film, a forming step of pressing the optical film against a mold to deform the optical film, and a cutting step of cutting the optical film, in which the heating step is a step of heating the optical film by irradiating the optical film with infrared rays, and an irradiation amount of the infrared rays has a distribution in a plane of the optical film.

Abstract: An object of the present invention is to provide an optically functional film in which expression of a phase difference and a change in phase difference in a case of being formed into a three-dimensional shape including a curved surface are suppressed, and for example, in a case of being applied to a pancake lens-type virtual reality display apparatus, it is possible to reduce light leakage. Another object of the present invention is to provide an optical laminate including the above-described optically functional film, a formed product, a manufacturing method of an optical component, an optical component, and a virtual reality display apparatus. The optically functional film of the present invention is an optically functional film obtained by forming a composition which contains at least a liquid crystal compound having a polymerizable group, in which a polymerization rate of the liquid crystal compound is 40% or less.

Abstract: Provided are an optical laminate in which, for example, in a case of being applied to a pancake lens-type virtual reality display apparatus, light leakage can be reduced by canceling out expression of phase difference, change in phase difference, and the like caused by molding into a curved surface; an optical lens including the optical laminate; and a virtual reality display apparatus using the optical lens. The optical laminate includes a first optically anisotropic layer containing a negative birefringent resin, and a specific layer selected from the group consisting of a third optically anisotropic layer which is formed by immobilizing a uniformly aligned liquid crystal compound and a cholesteric liquid crystal layer which is formed by immobilizing a helically aligned liquid crystal compound, in which the first optically anisotropic layer and the specific layer have a curved surface portion.

Abstract: An object is to provide an optical system capable of improving the brightness of a main image while eliminating a ghost image. In an optical system including: an image display device that emits an image; a linear polarizer through which light associated with the image passes; a first quarter wavelength plate which receives the light from the linear polarizer; a half mirror; a reflective polarizer; and a second quarter wavelength plate provided between the reflective polarizer and the half mirror, retardance of the first quarter wavelength plate and retardance of the second quarter wavelength plate are equal, and thus the object is achieved.

Abstract: An object is to provide an optical system capable of improving the brightness of a main image while eliminating a ghost image. In an optical system including: an image display device that emits an image; a linear polarizer through which light associated with the image passes; a first quarter wavelength plate which receives the light from the linear polarizer; a half mirror; a reflective polarizer; and a second quarter wavelength plate provided between the reflective polarizer and the half mirror, retardance of the first quarter wavelength plate and retardance of the second quarter wavelength plate are equal, and thus the object is achieved.

Abstract: An object of present invention is to provide an optical laminate that can be used for a reflective circular polarizer with little occurrence of a ghost in a case of being used in a virtual reality display device, an electronic finder, or the like; a laminated optical film including the reflective circular polarizer; an optical article including the optical laminate; and a virtual reality display device including the optical article.

Abstract: An object of the present invention is to provide a laminated optical film including a reflective circular polarizer with high image sharpness of a reflected image, and an image display device formed of the laminated optical film. The object is achieved by providing the laminated optical film including at least a reflective circular polarizer, a retardation layer that converts circularly polarized light into linearly polarized light, and a linear polarizer in this order, in which a surface of the reflective circular polarizer on a side opposite to the linear polarizer has a surface roughness Ra of 100 nm or less.

Abstract: An object is to provide an optical system capable of improving the brightness of a main image while eliminating a ghost image. In an optical system including: an image display device that emits an image; a linear polarizer through which light associated with the image passes; a first quarter wavelength plate which receives the light from the linear polarizer; a half mirror; a reflective polarizer; and a second quarter wavelength plate provided between the reflective polarizer and the half mirror, retardance of the first quarter wavelength plate and retardance of the second quarter wavelength plate are equal, and thus the object is achieved.

Abstract: Provided is a method for producing a film, including a step A of applying a coating liquid containing a film-forming compound, a polymer, and a solvent onto a support to form a coating film, the polymer being at least one selected from a polymer having a fluoroaliphatic group or a polymer having a siloxane structure, and allowing a solution having the polymer dissolved in methyl ethyl ketone at a solid content of 55% by mass to have a viscosity of 15 mPa·s or more at a liquid temperature of 60° C.; a step B of drying the coating film formed in the step A at a rate at which the coating film shows a mass change of from 0.02 g/m2/s to 0.1 g/m2/s for a time which is twice or more t seconds satisfying a predetermined condition A; and a step C of drying the coating film after the step B at a rate at which the coating film shows a mass change of from 0.02 g/m2/s to 0.2 g/m2/s.