JP-2022531373-A5 -

Dates

Publication Date

20230508

Application Date

20200428

Description

The descriptions of elements in the figures should be understood to apply equally to corresponding elements in other figures unless otherwise indicated. While specific embodiments have been illustrated and described herein, it will be understood by those skilled in the art that various alternative and/or equivalent embodiments can replace the illustrated and described embodiments without departing from the scope of this disclosure. This application is intended to encompass all adaptable or modified examples of the specific embodiments described herein. Therefore, this disclosure is limited only by the claims and their equivalents. Exemplary embodiments are shown below. [Item 1] An optical system for displaying a first image and a second image to an observer, A different first display and a second display, An optical laminate, The first light ray from the first display is received, and the received first light ray is reflected for observation by the observer. The optical laminate is configured to receive a second ray from the second display, which is different from the first ray, and to transmit the received second ray for observation by the observer, and the optical laminate is The reflective polarizer facing the first display, An absorbing polarizer is placed on the reflective polarizer and faces the second display, The reflective polarizer and the absorbing polarizer each have orthogonal through axes and cutoff axes, thereby enabling substantially perpendicular incident light having wavelengths in the range of approximately 400 nm to approximately 700 nm. The reflective polarizer reflects at least 70% of the incident light polarized along the cutoff axis of the reflective polarizer, and transmits at least 70% of the incident light polarized along the through axis of the reflective polarizer. The optical laminate comprises an absorbing polarizer which absorbs at least 50% and a maximum of 85% of the incident light polarized along the cutoff axis of the absorbing polarizer, and transmits at least 70% of the incident light polarized along the through axis of the absorbing polarizer, An optical system in which the cutoff axis of the reflective polarizer and the cutoff axis of the absorbing polarizer form an angle of approximately 5 to 40 degrees relative to each other. [Item 2] The optical system described in item 1, wherein the second display is a real-world object in a real-world scene. [Item 3] The optical system according to item 1, wherein the reflective polarizer includes one or more of the following: a wire grid reflective polarizer and a multilayer polymer reflective polarizer. [Item 4] The optical system according to item 1, wherein the angle between the cutoff axis of the reflective polarizer and the cutoff axis of the absorbing polarizer is approximately 10 degrees to approximately 30 degrees. [Item 5] The optical system according to item 1, wherein the absorbing polarizer transmits about 5% of the incident light polarized along the cutoff axis of the absorbing polarizer. [Item 6] A see-through optical system for displaying a virtual image to an observer, A first display configured to emit a first image having a first polarization state, An optical laminate curved along two mutually orthogonal directions, configured to receive the emitted first image and reflect the received first image for observation by the observer, the observer observing an enlarged virtual image of the first image, the observer receiving and seeing polarized real-world objects in a real-world scene through the optical laminate, thereby allowing the optical laminate to receive light having at least one wavelength within a predetermined wavelength range and propagating along a substantially perpendicular incidence direction, Reflecting at least 70% of the incident light polarized along the first polarization state, The optical laminate comprises an optical laminate that absorbs at least 50% and a maximum of 85% of the incident light having a second orthogonal polarization state, A see-through optical system in which, when the optical laminate is continuously rotated at least 180 degrees around the polarized real-world object and the light incident on the optical laminate from the polarized real-world object, the polarized real-world object remains observable by the observer. [Item 7] The see-through optical system according to item 6, wherein the predetermined wavelength range is approximately 400 nm to approximately 700 nm. [Item 8] The see-through optical system according to item 6, wherein the predetermined wavelength range is the blue wavelength range. [Item 9] The see-through optical system according to item 6, wherein the at least one wavelength includes at least one blue wavelength, at least one green wavelength, and at least one red wavelength. [Item 10] The see-through optical system described in item 6, wherein the optical laminate is The reflective polarizer facing the first display, The system comprises an absorbing