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1. (WO2018220267) EYEPIECE FOR A PERSONAL DISPLAY AND PERSONAL DISPLAY COMPRISING SUCH EYEPIECE

Pub. No.:    WO/2018/220267    International Application No.:    PCT/FI2018/050372
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat May 19 01:59:59 CEST 2018
IPC: G02B 27/01
G02B 25/04
G02B 25/00
G02B 15/173
Applicants: DISPELIX OY
Inventors: AIKIO, Mika
Title: EYEPIECE FOR A PERSONAL DISPLAY AND PERSONAL DISPLAY COMPRISING SUCH EYEPIECE
Abstract:
The invention relates to personal display devices and in particular an eyepiece therefor. The eyepiece is adapted for projecting an image from an image plane (14) on one side of the eyepiece through an exit pupil (10) on the opposite side of the eyepiece and comprises at least one stationary lens group (13) and at least two movable lens groups (11, 12) being movable with respect to the stationary lens group (13) along an optical axis between the image plane (14) and the exit pupil (10). According to the invention, the lens groups are arranged in positive-negative-positive configuration and the movable lens groups are arranged to move along the optical axis between a first state providing a first field- of-view and a second state providing a second field-of-view smaller than the first field-of-view to the image plane (14). The invention allows for improving optical performance and user experience of personal display devices.