Three-dimensional measurement of rotating combinative Dammann gratings

Dong Zhao; Changhe Zhou; Wei Jia; Jin Wang; Changcheng Xiang; Peng Sun; Yongfang Xie; Zonghao Ye; Junjie Li; Ge Jin

doi:10.1117/12.2537731

18 November 2019 Three-dimensional measurement of rotating combinative Dammann gratings

Dong Zhao, Changhe Zhou, Wei Jia, Jin Wang, Changcheng Xiang, Peng Sun, Yongfang Xie, Zonghao Ye, Junjie Li, Ge Jin

Author Affiliations +

Proceedings Volume 11188, Holography, Diffractive Optics, and Applications IX; 1118822 (2019) https://doi.org/10.1117/12.2537731
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

As an important means to obtain three-dimensional depth information of target, optical measurement has been widely used in face recognition, machine manufacturing, aerospace and other related fields in the past decades. Optical three-dimensional imaging and depth measurement is a fast and non-contact method for reconstructing three-dimensional imaging and depth measurement of objects based on optical means and digital image processing analysis. In this paper, a three-dimensional measurement module of transversely rotating combined Dammann grating is proposed, which generates interleaved high-density dot-matrix structured light for three-dimensional imaging and measurement. The measurement module consists of integrated components of laser and beam expander, collimating lens, four transversely rotating combined Dammann gratings with different beam splitting ratios, and objective lens. The laser emits a laser beam which is collimated by a collimating lens. Four Dammann gratings are used to generate four non-staggered dot-matrix by splitting them, and then the high-density staggered projection dot-matrix for three-dimensional measurement and imaging are projected by the objective lens. The measurement module has the advantages of simple structure, high output dot-matrix density, staggered projection dot-matrix edges, and easy integration into mobile devices. This technology may reduce the complexity, number of optical elements, power consumption and cost of structured light projectors in mobile and fixed 3D sensors.

Citation Download Citation

Dong Zhao, Changhe Zhou, Wei Jia, Jin Wang, Changcheng Xiang, Peng Sun, Yongfang Xie, Zonghao Ye, Junjie Li, and Ge Jin "Three-dimensional measurement of rotating combinative Dammann gratings", Proc. SPIE 11188, Holography, Diffractive Optics, and Applications IX, 1118822 (18 November 2019); https://doi.org/10.1117/12.2537731

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

3D image processing

3D acquisition

Optics manufacturing

Objectives

Structured light

Aerospace engineering

Facial recognition systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years