Zobrazeno 1 - 10
of 28
pro vyhledávání: '"W.M. Wreathall"'
Publikováno v:
IEEE Transactions on Electron Devices. 21:462-469
The performance of a television camera using the one-inch pyroelectric vidicon has been measured. The results are compared with an analysis which attempts to identify the factors limiting the performance of the system. Two modes of operation are cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23efe49c8548c06d4cea3935ae0df42e
https://doi.org/10.1109/t-ed.1974.17951
https://doi.org/10.1109/t-ed.1974.17951
Autor:
W.M. Wreathall
Publisher Summary This chapter describes how limitations have been overcome in terms of producing tubes that are optimized for imaging, using wavelengths around one-third of a millimeter of the emission from an HCN laser. Reflection and transmission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::740f9de279b322d8b2a9a7337821fdf8
https://doi.org/10.1016/s0065-2539(08)61520-6
https://doi.org/10.1016/s0065-2539(08)61520-6
Autor:
A.L. Harmer, W.M. Wreathall
Publisher Summary This chapter describes the thermal diffusion limitations of the resolution of a pyroelectric vidicon. The EEV type P8090 pyroelectric vidicon has a standard vidicon gun structure with a pyroelectric target of triglycine sulfate (TGS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e1feb1c80840e8fd85b0d93d12f0109
https://doi.org/10.1016/s0065-2539(08)61482-1
https://doi.org/10.1016/s0065-2539(08)61482-1
Publikováno v:
1973 International Electron Devices Meeting.
The performance of a television camera using the one inch pyroelectric vidicon has been measured, and compared with an analysis which attempts to identify the factors limiting the performance of the system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f1e0c2b09321a6bcbee3f402c726a80
https://doi.org/10.1109/iedm.1973.188713
https://doi.org/10.1109/iedm.1973.188713
Autor:
W.M. Wreathall
Publisher Summary This chapter discusses some features of the mathematical methods that have been found of importance in ensuring both speed and accuracy. The aberrations of typical tubes have been calculated, using a digital computer to solve the el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1ae3de15aafd10a3c3db91a0691d253
https://doi.org/10.1016/s0065-2539(08)61686-8
https://doi.org/10.1016/s0065-2539(08)61686-8
Autor:
W.M. Wreathall
Publikováno v:
1970 International Electron Devices Meeting.
A thermal-imaging camera tube is described that works at normal ambient temperatures in a modified 1 inch vidicon camera. A thin slice of triglycine sulfate (TGS) is used to convert a thermal image into a spatial distribution of stored charge. The mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e40c8b025b0584544b9105595ed2f20
https://doi.org/10.1109/iedm.1970.188262
https://doi.org/10.1109/iedm.1970.188262
Publisher Summary This chapter describes thermal imaging with pyroelectric television tubes. In operation of the pyroelectric vidicon tube, the incident thermal radiation is modulated by a chopper and gives rise to a variation of the target temperatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef0a07871609b6b899ca1de60b794150
https://doi.org/10.1016/s0065-2539(08)61306-2
https://doi.org/10.1016/s0065-2539(08)61306-2
Autor:
R.L. Beurle, W.M. Wreathall
Publisher Summary This chapter analyzes the aberration in image converters in which a solenoidal magnetic field is used to focus electrons accelerated from a photocathode on to a target or fluorescent screen. As a consequence of the distribution of e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f1ba4be60b081c1391f3cf4ea934192
https://doi.org/10.1016/s0065-2539(08)61165-8
https://doi.org/10.1016/s0065-2539(08)61165-8
Autor:
W.M. Wreathall
Publikováno v:
Optica Acta: International Journal of Optics. 17:718-719
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f963364bd954128dad307a07d6bf50a
https://doi.org/10.1080/713818359
https://doi.org/10.1080/713818359
Publikováno v:
Electronics Letters. 8:44
A 25 frame/s display of 337 µm radiation, from a low-power (0.3 mW) HCN laser, has been obtained for the first time. The vidicon tube incorporates a 16 mm-diameter triglycine-sulphate target and its sensitivity to 337 µm radiation has not been opti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29d7abcc0016701b97cacbb1cf8645cd
https://doi.org/10.1049/el:19720033
https://doi.org/10.1049/el:19720033