Results 261 to 270 of about 9,174,274 (308)

Assessment of Image Quality of Optical Systems

Applied Optics, 1968
Spot diagrams and the synthesized images of the Siemens star object obtained by an image synthesizer in which the above spot diagrams obtained on a cathode-ray tube were used as the light sources, were compared with the aberration curves and the optical traasfer function of the same manufactured lens.
Y, Ichioka, T, Suzuki
openaire   +2 more sources

Quality of Service in Hybrid Optical Switching

2014 12th International Conference on Frontiers of Information Technology, 2014
Network traffic is continuously increasing over the internet due to emerging end user applications provided by cloud computing. Optical networks are hence rapidly gaining exclusivity in access networks and data center networks as they provide huge bandwidth support.
Muhammad Imran, Khurram Aziz
openaire   +1 more source

Optical quality of the nasendoscope with and without the endosheath

The Journal of Laryngology & Otology, 2006
With the increasing use of the endosheath in clinical practice, we set out to investigate the quality of the nasendoscope image produced with and without an endosheath. It has been suggested by some users that the endosheath degrades the image. We used a spectrophotometer to assess the optical transmission of the endosheath and found no selective ...
F, Vaz, L, Ripley, D, Lim, R, Kanegaonkar, M, Harries   +4 more
openaire   +2 more sources

Optical Quality Metrics

2015
In the previous chapter, diffraction and aberration theory was developed to relate the shape of the wavefront in the exit pupil to the irradiance pattern formed in the image plane. Mathematical representation of the complex wavefront surface fully describes its shape but at the same time obscures whether the performance of the optical system is good or
openaire   +1 more source

Optical Image Quality and the Cone Mosaic

Science, 1986
Contrary to the orthodox view that optical image quality should "match" the photoreceptor grain, anatomical data from the eyes of various animals suggest that the image quality is significantly superior to the potential resolution of the cone mosaic in most retinal regions.
A W, Snyder, T R, Bossomaier, A, Hughes
openaire   +2 more sources

Measuring Optical Quality

2018
Light intensity is measured in nits. Transmissivity is the measure of how many nits pass through an area of transparent material. Haze is a measure of how much of the light passing through the material diverges from its original path by more than 2.5°. Clarity is a measure of much diverges by less than 2.5°.
openaire   +1 more source

Design of a high-quality optical conjugate structure in optical tweezers

Applied Optics, 2015
We propose an approach to realize a high-quality optical conjugate of a piezo-driven mirror (PM) in optical tweezers. Misalignments between the optical beam and the steering center of the PM are analyzed mathematically. The decentrations in different directions cause different changes, either a position change of the conjugate plane or a spot variation
Chunguang, Hu, Ran, An, Chengwei, Zhang, Hai, Lei, Xiaodong, Hu, Hongbin, Li, Xiaotang, Hu   +6 more
openaire   +2 more sources

Gasdynamic lightguide with high optical quality

Applied Optics, 1985
A region capable of guiding light can be created by the refractive-index gradients in a radial flow nozzle. An earlier such lightguide had been found to have poor optical quality. A new lightguide has been built and tested. Reasonably good agreement was found between the calculated and observed shapes of the lightguiding regions.
openaire   +2 more sources

Time to add screening for financial hardship as a quality measure?

Ca-A Cancer Journal for Clinicians, 2021
Ya-Chen Tina Shih, Cathy J Bradley, Syed Yousuf Zafar   +2 more
exaly  

Nanomaterials as optical sensors for application in rapid detection of food contaminants, quality and authenticity

Sensors and Actuators B: Chemical, 2021
Haiyan Fu, Yuanbin She, Chen Hengye
exaly