Patent · US Active

Head-up display with diffuser

US10585396B2 · kind B2 · utility

2Cited by

4References

14Claims

0Family size

Assignee

Two Trees Photonics Limited · GB

Inventors

Jamieson Christmas · Milton Keynes, GB
Dackson Masiyano · Milton Keynes, GB

Key dates

Filing date	May 13, 2015
Grant date	Mar 10, 2020
Priority date	—
Expiry date	May 13, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG03H2225/32
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A head-up display for a windscreen having spatially variant optical power. The head-up display includes a diffuser arranged to display an image. The diffuser is shaped to compensate for the spatially variant optical power of the windscreen. A holographic projector may be provided, which is arranged to project the image for display onto the diffuser and includes a spatial light modulator arranged to apply a phase-delay distribution to incident light. The phase-delay distribution includes phase-only data representative of an object. The projector further includes Fourier transform means arranged to perform a Fourier transform of phase modulated light received from the spatial light modulator and to form the image on the diffuser.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.