Display apparatus and method of displaying using context and focus image renderers and optical combiners

US9983413B1 · kind B1 · utility

Assignee

• Varjo Technologies 0y · FI

Inventors

• Oiva Arvo Oskari Sahlsten · Salo, FI
• Mikko Ollila · Tampere, FI

Key dates

• Filing date: Jul 14, 2017
• Grant date: May 29, 2018
• Expiry date: Jul 14, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2027/0187
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A display apparatus and method of displaying, via the display apparatus. The display apparatus includes context image renderer for rendering context image; focus image renderer for rendering focus image; exit optical element; and optical combiner for optically combining projection of the rendered context image with projection of the rendered focus image to create visual scene. The optical combiner includes first semi-transparent reflective element; and a second semi-transparent reflective element. The context image renderer is arranged in a manner that projection of rendered context image is incident upon first semi-transparent reflective element and reflected towards exit optical element therefrom. The focus image renderer is arranged in a manner that projection of rendered focus image is incident upon first semi-transparent reflective element and reflected towards second semi-transparent reflective element, and then reflected towards first semi-transparent reflective element, from where projection thereof is allowed to pass through towards exit optical element.