Recent advances in long-lived mirrors for terrestrial and space applications

Bouquet, F. L.; Helms, Richard G.; Maag, Carl R.; Heggen, Philip M.

doi:10.1016/0165-1633(87)90035-9

Cited by 8 publications

(8 citation statements)

References 1 publication

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“…There are two groups of solutions that are practiced in the building sector for general energy issues, namely: The building energy saving approaches and the renewable energy application approaches. As an approach for energy saving, daylight has a disadvantage of not being able to reach many areas of a building such as store rooms, basements and corridors and it also brings heat gain with the light (Bouchet and Fontoynont, 1996;Shao et al, 1998). Light pipes were designed to transport daylight to unreached areas, but light pipes have their difficulties for wiring, so that optical fibers are considered as the best approach for the daylight transportation so far.…”

Section: Resultsmentioning

confidence: 99%

“…However, daylight has a disadvantage that it may not able to reach many areas such as storerooms, basements and corridors. It also brings heat gain with the light (Hazami et al, 2005;Bouchet and Fontoynont, 1996;Shao et al, 1998). Light pipes were designed to transport the daylight to the deeper parts in buildings.…”

Section: Introductionmentioning

confidence: 99%

“…Due to its lower cost, the material, which is most often used for solar reflectors today, is anodized aluminum. However, if the anodized aluminum is not protected, for example by a glazing, a plastic foil, or a lacquer, its optical performance degrades severely in only a couple of months (Bouquet et al, 1987). The degradation of silver is essentially as rapid as that of aluminum (Czanderna, 1981).…”

Section: Introductionmentioning

confidence: 99%

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Critical Retrospect on Conventional and Luminescent Solar Concentration Devices

Abdul-Rahman¹

2010

American Journal of Environmental Sciences

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Problem statement: Conventional solar concentrators are only sensitive for the beam radiation and they function poorly in overcast sky conditions. Even under a clear sky condition, trackers are always needed for conventional solar concentrators. Static concentrators always come with a poor concentration rate without a tracker and the light concentrated by normal Luminescent Solar Concentrators (LSC) could not be transported by optical fibers to a remote place since the light produced by LSCs is not a pointolite. Approach: Through a critical literature review and discussion, this article retrospects the merits and demerits of recent conventional solar concentrators and Luminescent Solar Concentrators (LSC). Results: Results summarized the limitations in current day lighting related solar concentration devices. As an approach for energy saving, daylight has a disadvantage of not being able to reach many areas of a building such as store rooms, basements and corridors and it also brings heat gain with the light. Light pipes were designed to transport daylight to unreached areas, but light pipes have their difficulties for wiring, so that optical fibers are considered as the best approach for the daylight transportation so far. However, the optical fiber needs a pointolite for the light transportation. Various solar concentrators that were designed using optical approaches such as using mirrors or lens for the solar energy concentration. Since they are only sensitive for the beam irradiation, they function poorly in the cloudy weather and the diffuse light conditions and even if they are under a clear sky condition, trackers are always needed. Luminescent Solar Concentrators (LSC) and some static solar concentrators were then designed as the diffuse light solution and the static solution, respectively. Static concentrators always come with a low concentration rate without a tracker and the light concentrated by normal LSCs could not be transported by optical fibers to a remote place since the light produced by an LSC is not a pointolite. Conclusion/Recommendations: New solar concentration systems need to be developed to mitigate the above-mentioned limitations. Future studies especially cross disciplinary researches on developing new solar concentrators in mitigating those limitations as discussed in this study are highly recommended

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Critical Retrospect on Conventional and Luminescent Solar Concentration Devices

Abdul-Rahman¹

2010

American Journal of Environmental Sciences

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“…To reduce or eliminate atomic oxygen erosion in materials in space, the application of thin-film protective coatings made of durable dielectric materials is the most used approach [34,35,[56][57][58][59][60]. As previously described, oxides and fluorides are materials relatively resistant to AO, making them suitable as capping layers in coatings for space optics.…”

Section: Atomic Oxygenmentioning

confidence: 99%

“…Research on coatings and thin films demonstrated that the instability of properties in optical film was attributed both to the coating materials and their deposition process [35,38] [59,74][75] [76]. For example, with respect to metals, metal oxide compound coating materials possess large energy gaps and provide high transmission to short, near-UV wavelengths because their optical absorption edge is outside (shorter than) the wavelength of interest.…”

Section: Thermal Processesmentioning

confidence: 99%

Mirrors for Space Telescopes: Degradation Issues

Garoli¹,

Marcos²,

Larruquert³

et al. 2020

Preprint

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Mirrors are a subset of optical components essential for the success of current and future space missions. Most of the telescopes for space programs ranging from Earth Observation to Astrophysics and covering the whole electromagnetic spectrum from X-rays to Far-Infrared are based on reflective optics. Mirrors operate in diverse and harsh environments that range from Low-Earth Orbit, to interplanetary orbits and the deep space. The operational life of space observatories spans from minutes (sounding rockets) to decades (large observatories), and the performance of the mirrors within the mission lifetime is susceptible to degrade, which results in a drop of the instrument throughput, which in turn affects the scientific return. Therefore, the knowledge of potential degradation mechanisms, how they affect mirror performance, and how to prevent them is of paramount importance to ensure the long-term success of space telescopes. In this review we report an overview on current mirror technology for space missions with a focus on the importance of degradation and radiation resistance of the coating materials. A special attention will be given to degradation effects on mirrors for the far and extreme UV as in these ranges the degradation is enhanced by the strong absorption of most contaminants.

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Advances in Solar Optical Materials

Lampert¹

1989

Advances in Solar Energy

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Recent advances in long-lived mirrors for terrestrial and space applications

Cited by 8 publications

References 1 publication

Critical Retrospect on Conventional and Luminescent Solar Concentration Devices

Critical Retrospect on Conventional and Luminescent Solar Concentration Devices

Mirrors for Space Telescopes: Degradation Issues

Advances in Solar Optical Materials

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