18558425. BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER simplified abstract (3M INNOVATIVE PROPERTIES COMPANY)
Contents
BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER
Organization Name
3M INNOVATIVE PROPERTIES COMPANY
Inventor(s)
Carl A. Stover of St. Paul MN (US)
Matthew E. Sousa of Rosemount MN (US)
Bharat R. Acharya of Woodbury MN (US)
Benjamin J. Forsythe of Stillwater MN (US)
Robert D Taylor of Stacy MN (US)
Quinn D. Sanford of Mosinee WI (US)
BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER - A simplified explanation of the abstract
This abstract first appeared for US patent application 18558425 titled 'BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER
The abstract describes a backlight with a front reflector and a back reflector that create a cavity between them. The front reflector has specific transmittance properties for different incident angles and polarizations of light.
- The front reflector has low transmittance for light polarized along one direction at small incident angles, but higher transmittance for light polarized along the orthogonal direction.
- At larger incident angles, the front reflector has low transmittance for both polarizations.
- In the infrared wavelength range, the front reflector has high transmittance for both incident angles and polarizations.
- The back reflector has high transmittance for a specific infrared wavelength and low average transmittance in the visible range.
Potential Applications: - LCD displays - Automotive lighting - Medical devices
Problems Solved: - Enhancing light transmission efficiency - Improving visibility and contrast in displays
Benefits: - Better image quality - Energy efficiency - Enhanced user experience
Commercial Applications: Title: Innovative Backlight Technology for Enhanced Display Performance This technology can be used in various industries such as consumer electronics, automotive, and healthcare for improved lighting solutions.
Questions about Backlight Technology: 1. How does the front reflector's transmittance properties impact the overall performance of the backlight?
- The front reflector's transmittance properties determine the efficiency of light transmission and the quality of the displayed images.
2. What are the key advantages of using a front reflector with specific transmittance characteristics in a backlight system?
- The use of a front reflector with tailored transmittance properties can significantly improve the performance and energy efficiency of the backlight.
Original Abstract Submitted
A backlight including a front reflector disposed on a back reflector and defining a cavity therebetween. For a visible wavelength range and for a first incident angle of less than 5 degrees, the front reflector has an average transmittance of less than 20% for the incident light polarized along a first direction, and an average transmittance of between 20% and 85% for the incident light polarized along an orthogonal second direction. For a visible wavelength range and for a second incident angle of greater than 40 degrees, the front reflector has an average transmittance of less than 40% for each of the first and second directions. For at least a first wavelength in an infrared wavelength range, the front reflector has a transmittance of greater than about 40% for each of the first and second incident angles and for each of the first and second directions. For each of the first and second incident angles, for the incident light polarized along each of the first and second directions, the back reflector has a transmittance of greater than 30% for the first infrared wavelength, and an average transmittance of less than 20% in the visible range.
