Publications related to Zoom lens

Closed-Form Solution to Disambiguate Defocus Blur in Single-Perspective Images

Sabine Süsstrunk, Majed El Helou, Marjan Shahpaski

Depth-from-defocus techniques suffer an ambiguity problem where depth planes on opposite sides of the focal plane have identical defocus. We solve the ambiguity by relying on the wavelength-dependent relationship between defocus and depth. We conduct a rob ...

2019

Improvements on the uniformity of large-area microlens arrays in Fused Silica

Toralf Scharf, Wilfried Noell, Raoul Kirner, Jeremy Béguelin

The uniformity of large microlens arrays in Fused Silica is governed by the production process. It comprises photolithographic patterning of a spin-coated layer of photoresist on a 200mm wafer with a molten resist reflow process and subsequent dry etching. ...

OPTICAL SOC AMER2019

Solving the Depth Ambiguity in Single-Perspective Images

Sabine Süsstrunk, Majed El Helou, Marjan Shahpaski

Scene depth estimation is gaining in importance as more and more AR/VR and robot vision applications are developed. Conventional depth-from-defocus techniques can passively provide depth maps from a single image. This is especially advantageous for moving ...

2019

Sky Monitoring System

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Yujie Wu

In a sky monitoring system (S), comprising an image sensor (1), a wide angle lens (16), a microprocessor (3), and a memory unit (11, 18), wherein the sky monitoring system (S) is configured to take pictures of a sky scene, wherein the sky monitoring system ...

2018

AAM: An Assessment Metric of Axial Chromatic Aberration

Sabine Süsstrunk, Majed El Helou, Frederike Dümbgen

Knowledge of lens specifications is important to identify the best lens for a given capture scenario and application. Lens manufacturers provide many specifications in their data sheets, and multiple initiatives for testing and comparing different lenses c ...

2018

Carbon Nanotube Array Based Binary Gabor Zone Plate Lenses

Sunan Deng, Chaohui Li

Diffractive zone plates have a wide range of applications from focusing x-ray to extreme UV radiation. The Gabor zone plate, which suppresses the higher-order foci to a pair of conjugate foci, is an attractive alternative to the conventional Fresnel zone p ...

Nature Publishing Group2017

An embedded system for quasi real-time lighting computation based on sky monitoring

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Yujie Wu

Lighting simulation plays a significant role in the architectural design and evaluation of performance parameters of buildings. The general method of assuming a virtual sky in lighting simulation may lead to mismatch with the real situation, which conventi ...

2017

Scaling effect and its impact on wavelength-scale microlenses

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

We revisit the scaling laws in micro-optical systems to highlight new phenomena arising beyond a conventional optical regime, especially when the size of the system approaches to the operational wavelength. Our goal is to visualize the impact of the scalin ...

Spie-Int Soc Optical Engineering2017

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Zoom lens

Lens aberration compensation in interference microscopy

Laser engraving device for multiple laser beams

Closed-Form Solution to Disambiguate Defocus Blur in Single-Perspective Images

Improvements on the uniformity of large-area microlens arrays in Fused Silica

Solving the Depth Ambiguity in Single-Perspective Images

Sky Monitoring System

AAM: An Assessment Metric of Axial Chromatic Aberration

Carbon Nanotube Array Based Binary Gabor Zone Plate Lenses

An embedded system for quasi real-time lighting computation based on sky monitoring

Scaling effect and its impact on wavelength-scale microlenses

Graph Chatbot

Chat with Graph Search

Closed-Form Solution to Disambiguate Defocus Blur in Single-Perspective Images

Improvements on the uniformity of large-area microlens arrays in Fused Silica

Solving the Depth Ambiguity in Single-Perspective Images

Laser engraving device for multiple laser beams

Lens aberration compensation in interference microscopy

Carbon Nanotube Array Based Binary Gabor Zone Plate Lenses

AAM: An Assessment Metric of Axial Chromatic Aberration

Sky Monitoring System

Scaling effect and its impact on wavelength-scale microlenses

An embedded system for quasi real-time lighting computation based on sky monitoring