Results 221 to 230 of about 128,668 (300)

The Rod Bipolar Cell Pathway Contributes To Surround Responses In OFF Retinal Ganglion Cells

open access: yes
Spampinato G   +10 more
europepmc   +1 more source

Holographic printing for generating large-angle freeform holographic optical elements

Optics Letters, 2022
We propose a holographic printing technique for generating highly efficient large-deflection-angle freeform holographic optical elements (HOEs). For industrial device applications, the optical efficiency and deflection angle of HOEs are critical.
Hosung Jeon   +7 more
openaire   +3 more sources

Holographic solar concentrator using multiplexed holographic optical elements

2018 23rd Opto-Electronics and Communications Conference (OECC), 2018
In this paper, we present the multiplexed holographic optical elements (HOEs) using photopolymer for solar concentrator application. We experimentally confirmed that multiplexed holographic lens can condense the lights with high optical efficiency.
Hui-Ying Wu   +4 more
openaire   +2 more sources

Design and fabricate freeform holographic optical elements on curved optical surfaces using holographic printing.

Optics Letters, 2023
Freeform holographic optical elements (HOEs), due to the high degrees of design freedom, can be used to enhance performance of display systems. In this Letter, we propose a method for designing and fabricating freeform HOEs on curved optical surfaces ...
Tian Shu   +4 more
semanticscholar   +1 more source

Design of a waveguide eye-tracking system operating in near-infrared with holographic optical elements

Optical Engineering: The Journal of SPIE, 2021
Recent research in augmented reality (AR) eyewear has prompted interest in using volume holographic optical elements for this application. However, many sensing operations in AR systems require the use of wavelengths in the near-infrared (NIR) (750 to ...
Jianbo Zhao   +2 more
semanticscholar   +1 more source

Stratified volume holographic optical elements

Optics Letters, 1986
Volume holographic optical elements are of considerable interest for applications in optical information processing and computing systems and in optical interconnect technology. Typical volume holographic optical elements are fabricated from bulk photosensitive materials, such that the holographic recording process occurs throughout the entire volume ...
R V, Johnson, A R, Tanguay
openaire   +2 more sources

Binocular holographic display based on the holographic optical element

Journal of the Optical Society of America A, 2022
Due to the limited pixel pitch of the spatial light modulator (SLM), the field of view (FOV) is insufficient to meet binocular observation needs. Here, an optimized controlling light method of a binocular holographic three-dimensional (3D) display system based on the holographic optical element (HOE) is proposed.
Xiujuan Qin   +8 more
openaire   +2 more sources

Bandwidth of holographic optical elements

Optics Letters, 1982
The diffraction efficiency, bandpass, and spurious beam rejection are studied for the holographic cascade lens that consists of a diffraction grating in contact with an off-axis zone plate. An analysis is presented for the bandpass of the volume diffraction grating, including the effects of grain polarizability.
T, Stone, N, George
openaire   +2 more sources

Optically switched volume holographic elements

Optics Letters, 1995
We optically switched the diffraction efficiency of volume holographic elements recorded in DMP-128 photopolymer by use of a thermal nonlinearity of the liquid crystal 5CB. The liquid crystal was incorporated into the volume grating. The diffraction efficiency of small areas of the grating was switched with a control beam power of several milliwatts ...
M S, Malcuit, T W, Stone
openaire   +2 more sources

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