公开(公告)号：US20180267214A1

公开(公告)日：2018-09-20

申请号：US15546298

申请日：2016-01-26

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Markus Rossi ,  Hans Peter Herzig ,  Philipp Mueller ,  Ali Naqavi ,  Daniel Infante Gomez ,  Moshe Doron ,  Matthias Gloor ,  Alireza Yasan ,  Hartmut Rudmann ,  Martin Lukas Balimann ,  Mai-Lan Elodie Boytard ,  Bassam Hallal ,  Daniel Pérez Calero ,  Julien Boucart ,  Hendrik Volkerink

IPC: G02B3/00 ,  G02B3/04

CPC classification number: G02B3/0056 ,  F21Y2105/16 ,  F21Y2115/30 ,  G02B3/0062 ,  G02B3/04 ,  G02B5/045 ,  G02B19/0066 ,  G02B27/0905 ,  G02B27/48 ,  G02B2207/123

Abstract: An apparatus for producing structured light comprises a first optical arrangement which comprises a microlens array (L1) comprising a multitude of transmissive or reflective microlenses (2) which are regularly arranged at a lens pitch P and an illumination unit for illuminating the microlens array. The illumination unit comprises an array (S1) of light sources (1) for emitting light of a wavelength L each and having an aperture each, wherein the apertures are located in a common emission plane which is located at a distance D from the microlens array. For the lens pitch P, the distance D and the wavelength L, the following equation applies P2=2LD/N, wherein N is an integer with N≥1. High-contrast high-intensity light patterns can be produced. Devices comprising such apparatuses can be used for depth mapping.