Fujifilm corporation (20240111198). OPTICAL LAMINATE, LAMINATED OPTICAL FILM, OPTICAL ARTICLE, AND VIRTUAL REALITY DISPLAY DEVICE simplified abstract

OPTICAL LAMINATE, LAMINATED OPTICAL FILM, OPTICAL ARTICLE, AND VIRTUAL REALITY DISPLAY DEVICE

Organization Name

fujifilm corporation

Inventor(s)

Ryuji Saneto of Minamiashigara-shi (JP)

Yujiro Yanai of Minamiashigara-shi (JP)

Yohei Hamachi of Minamiashigara-shi (JP)

Akira Maruyama of Minamiashigara-shi (JP)

OPTICAL LAMINATE, LAMINATED OPTICAL FILM, OPTICAL ARTICLE, AND VIRTUAL REALITY DISPLAY DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240111198 titled 'OPTICAL LAMINATE, LAMINATED OPTICAL FILM, OPTICAL ARTICLE, AND VIRTUAL REALITY DISPLAY DEVICE

Simplified Explanation

The present invention relates to an optical laminate that can be used for a reflective circular polarizer with minimal occurrence of a ghost in virtual reality display devices, electronic finders, and similar devices. The laminate includes two or more laminated reflective layers, each containing specific cholesteric liquid crystal layers formed of different liquid crystal compounds.

• The optical laminate includes multiple laminated reflective layers.
• The reflective layers contain cholesteric liquid crystal layers formed of specific rod-like and disk-like liquid crystal compounds.
• The laminate is designed to reduce the occurrence of ghosting in reflective circular polarizers.

Potential Applications

The technology can be applied in:

• Virtual reality display devices
• Electronic finders
• Optical filters for cameras

Problems Solved

• Reduced occurrence of ghosting in reflective circular polarizers
• Improved image quality in virtual reality displays

Benefits

• Enhanced visual experience in virtual reality applications
• Clearer images in electronic finders
• Improved performance of optical filters

Potential Commercial Applications

• Consumer electronics industry
• Virtual reality technology companies
• Camera and photography equipment manufacturers

Possible Prior Art

One possible prior art could be the use of traditional reflective circular polarizers in optical devices, which may have limitations in reducing ghosting effects.

Unanswered Questions

1. How does the specific composition of the liquid crystal compounds contribute to reducing ghosting effects in the reflective circular polarizer? 2. Are there any potential drawbacks or limitations of using the laminated reflective layers in optical devices that need to be considered?

Original Abstract Submitted

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. the optical laminate of the present invention includes two or more laminated reflective layers, in which the laminated reflective layer includes one reflective layer a that includes at least one or more cholesteric liquid crystal layers formed of a first liquid crystal compound which substantially consists of a rod-like liquid crystal compound and that does not include a cholesteric liquid crystal layer formed of a second liquid crystal compound which substantially consists of a disk-like liquid crystal compound, and one reflective layer b that includes at least one or more cholesteric liquid crystal layers formed of the second liquid crystal compound which substantially consists of a disk-like liquid crystal compound and that does not include a cholesteric liquid crystal layer formed of the first liquid crystal compound which substantially consists of a rod-like liquid crystal compound, and predetermined requirements are satisfied.