Multimedia / Photo Contest / 2020
Multilevel Diffractive Lens
Multilevel Diffractive Lens

A very large diameter (~100 mm) flat multi-level diffractive lens that is achromatic across the full visible spectrum. The photograph was taken by illuminating the lens from behind using a white light LED flashlight. Location: University of Utah. Lens fabrication: Monjurul Meem, University of Utah Photograph: Apratim Majumder, University of Utah

—Apratim Majumder, University of Utah, U.S.A.

01 Dec 2020

Surface Profile of Multilevel Diffractive Lens
Surface Profile of Multilevel Diffractive Lens

This is a scanning electron micrograph of a flat multi-level diffractive lens that is achromatic across the longwave infrared (LWIR) spectrum that has been can be used for thermal imaging. The SEM image was digitally mastered. Location: University of UtahLens fabrication: Monjurul Meem Lens design: Sourangsu Banerji, Rajesh Menon SEM image and digital mastering: Apratim Majumder Related publication: M. Meem, S. Banerji, A, Majumder, F. G. Vasquez, B. Sensale-Rodriguez & R. Menon, “Broadband lightweight flat lenses for longwave-infrared imaging,” Proceedings of the National Academy of Sciences Oct 2019, 201908447; DOI: 10.1073/pnas.1908447116

—Apratim Majumder, University of Utah, U.S.A.

01 Dec 2020

Dunes in the Moonlight
Dunes in the Moonlight

This is a scanning electron micrograph of the edge of a cleaved silicon wafer. The SEM image was digitally mastered. Location: University of Utah

—Apratim Majumder, University of Utah, U.S.A.

01 Dec 2020

Long Exposure
Long Exposure

This image uses a longish exposure for the action plus camera movement resulting in optical effects captured by the sensor.

—Joseph Chiara, Vienna Photographic Society

01 Dec 2020

Chopping Board
Chopping Board

A gigapixel image of a chopping board. The nicks and wood lines on it are clearly visible. Image captured by a gigapixel camera called Micro-Camera Array Microscope (MCAM). Hundreds of individually controllable LEDs are used for patterned illumination. Custom-designed, tunable lens array capture 12 * 8 overlapped field-of-view and project them into CMOS image sensors. The sub-images are stitched via a stitching algorithm.

—Xing Yao, Duke University, U.S.A.

01 Dec 2020

Gigapixel Leaf View
Gigapixel Leaf View

Gigapixel image of a leaf. After zooming in, you can clearly see the lines and stomata on the leaf. Image captured by a gigapixel camera called Micro-Camera Array Microscope (MCAM). Hundreds of individually controllable LEDs are used for patterned illumination. Custom-designed, tunable lens array capture 12 * 8 overlapped field-of-view and project them into CMOS image sensors. The sub-images are stitched via a stitching algorithm.

—Xing Yao, Duke University, U.S.A.

01 Dec 2020

Phonograph Record, via Gigapixel Camera
Phonograph Record, via Gigapixel Camera

Gigapixel image of an old record. You can clearly see the track of the record, the pattern on the record, and the texture of the paper. Image captured by a gigapixel camera called Micro-Camera Array Microscope (MCAM). Hundreds of individually controllable LEDs are used for patterned illumination. Custom-designed, tunable lens array capture 12 * 8 overlapped field-of-view and project them into CMOS image sensors. The sub-images are stitched via a stitching algorithm.

—Xing Yao, Duke University, U.S.A.

01 Dec 2020

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