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Publication No: IN202411068617 [India] Application No: IN202411068617
Title: A system for single panel-colour near eye display
Publication Date: 20-03-2026 File Date: 10-09-2024
Inventor(s): Raj Kumar; Rajveer Kaur; Bhargab Das
IPC Classification: G02B27/01, G02B5/18, G02B5/32, G02B27/42
Abstract:
The present invention discloses a system realized for near eye augmented reality display (AR) with single panel-colour and enhanced field of view (FOV). Single  wavelength/ colour laser is used to record Bragg matched multiplexed holographic optical elements (HOE) to be used as in-coupler (23) and out-coupler (24) of the  holographic waveguide (7). The number of sub-HOEs multiplexed in the main HOE are two or more. For a given bandwidth of the display source, more the number of  multiplexed sub-HOE higher the colour uniformity. These multiplexed HOEs are used to realize the single panel-colour display. A holographic waveguide with  multiplexed VHGs including a primary grating (12) and two secondary gratings as secondary grating-1 and secondary grating-2 (11 and 13) is designed to reduce  chromatic dispersion at the edges of the displayed image.
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