20240045261. DISPLAY OPTICAL FILM AND BACKLIGHT UNIT simplified abstract (3M INNOVATIVE PROPERTIES COMPANY)
Contents
DISPLAY OPTICAL FILM AND BACKLIGHT UNIT
Organization Name
3M INNOVATIVE PROPERTIES COMPANY
Inventor(s)
Gilles J. Benoit of Minneapolis MN (US)
Carl A. Stover of St. Paul MN (US)
Matthew B. Johnson of Woodbury MN (US)
Ryan T. Fabick of Shoreview MN (US)
Quinn D. Sanford of Mosinee WI (US)
DISPLAY OPTICAL FILM AND BACKLIGHT UNIT - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240045261 titled 'DISPLAY OPTICAL FILM AND BACKLIGHT UNIT
Simplified Explanation
The abstract describes an optical stack that can reflect and transmit light in a specific wavelength range. It consists of two stacked optical films, where the first film reflects light with a certain polarization state and transmits light with another polarization state. The second film has a maximum transmittance for light incident at a certain angle and a lower transmittance for light incident at a slightly larger angle. It also reflects a high percentage of light in the remaining wavelength range.
- The optical stack is designed to selectively reflect and transmit light in a predetermined wavelength range.
- The first optical film reflects light with a specific polarization state and transmits light with a different polarization state.
- The second optical film has a maximum transmittance for light incident at a first angle and a lower transmittance for light incident at a slightly larger angle.
- The second optical film also reflects a high percentage of light in the remaining wavelength range.
Potential applications of this technology:
- Optical filters for specific wavelength ranges.
- Polarizing filters for controlling the polarization state of light.
- Anti-reflective coatings for reducing unwanted reflections.
- Optical devices for wavelength-specific light manipulation.
Problems solved by this technology:
- Selective reflection and transmission of light in a specific wavelength range.
- Control of polarization state of light.
- Reduction of unwanted reflections.
Benefits of this technology:
- Precise control over the reflection and transmission of light in a predetermined wavelength range.
- Versatile applications in various optical devices and systems.
- Improved performance and efficiency in optical filtering and polarization control.
Original Abstract Submitted
an optical stack for reflecting and transmitting light in a predetermined wavelength range includes stacked first and second optical films, the predetermined wavelength range defining a first wavelength range and a remaining wavelength range. for normally incident light and for each wavelength in a first wavelength range, the first optical film substantially reflects light having a first polarization state, and substantially transmits light having a second polarization state. for each of the first and second polarization states, for wavelengths in the first wavelength range, the second optical film has a maximum optical transmittance tfor light incident at a first incident angle, and an optical transmittance t/2 for light incident at a second incident angle, where the second incident angle is greater than the first incident angle by less than about 50 degrees. for wavelengths in the remaining wavelength range, the second optical film reflects at least 80% of light.
