Mr. Fuxin Cai Profile

Fuxin Cai

at Soochow Univ

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 18 June 2021 Paper

Development of Moiré imaging film based on diffraction grating

Yichen Tao, Fuxin Cai, Su Shen

Proceedings Volume 11850, 1185016 (2021) https://doi.org/10.1117/12.2599746

Read Abstract +

Micro-nano optical device based on the moiré imaging effect has been widely used in the visual security and anticounterfeiting due to the unique visual effect. However, the micro-pattern array in the state-of-art moiré imaging device is based on nanoimprint lithography and the gravure printing technique which cannot achieve multi-color effect. Even worse, the volatile organic compounds in the printing ink does harm to the environment and human health. Therefore, it is urgently needed to develop a moiré imaging device free of ink. In this paper, we propose to integrate the diffraction grating into the moiré imaging device. Grating MPA is formed by rasterizing the micro-pattern array layer, and combined with the microlens array to construct a moiré imaging device, which was a hybrid refraction-diffraction structure. In the experiment, a diffraction grating with a period of 2 μm and a cylindrical lens array with a focal length of 90 μm were integrated on both sides of a 50 μm thick film to realize the imaging device. A formula that can predict the intensity of diffraction dispersion is derived, and the colorful moiré image related to the orientation of the grating and the position of the light source is achieved, in which the color can cover the whole visible spectrum under different viewing angle.

Proceedings Article | 28 February 2021 Paper

Moiré imaging film with fluorescence enhancement effect

Fuxin Cai, Yichen Tao, Su Shen

Proceedings Volume 11781, 117810G (2021) https://doi.org/10.1117/12.2591329

Read Abstract +

In recent years, the moiré imaging device has become one of the hot topics in the field of micro optics due to its strikingly visual three-dimensional (3D) effect which can be easily recognized by naked eye. Traditionally, the moiré imaging film is composed of the superposition of a microlens array（MLA）and a micro pattern array (MPA）with high alignment accuracy. By the combination of the nanoimprinting and nanoprinting techniques, we fabricated a moiré imaging film on a large-format substrate characterized by fluorescent enhancement effect under ultraviolet light illumination. By using a novel virtual mask technique, the MPA can contain more information than traditional one. It is worthy to note that the nanostructure is introduced to the MPA to promote the light efficiency of the fluorescent material. A synthetically magnified moiré image with 3D effect is demonstrated. The moiré imaging film has widely potential applications in 3D imaging, optical anti-counterfeiting, packaging, etc.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years