Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1992-09-30
1994-04-19
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25022711, 250306, H01J 314
Patent
active
053047958
ABSTRACT:
A high resolution observation apparatus of material features with a photon scanning microscope. The apparatus detects evanescent light which depends on surface feature of a sample and detects detailed distribution of optical constants of the sample. Namely, the apparatus makes it possible to detect detailed distribution of transparency or refractive index within a sample material in higher resolution than the wavelength of the incident light which is irradiates to the sample material coated on the top surface of the optical prism. The apparatus includes means for maintaining a predetermined distance between the sample and an optical fiber tip or means for detecting a positioning signal. Further, it becomes possible to detect fluorescent condition of the sample.
REFERENCES:
patent: 5018865 (1991-05-01), Ferrell et al.
Durig, et al., "Near-field Optical Scanning Microscopy with Tunnel-Distance Regulation", IBM Journal of Research and Development, vol. 30, No. 5, Sep. 1986, NY, pp. 478-480.
Betzig, et al., "Combined Shear Force and Near-field Scanning Optical Microscopy", Applied Physics Letters, vol. 60, No. 20, May 18, 1992, NY, pp. 2484-2486.
Toledo-Crow, et al., "Near-field Differential Scanning Optical Microscope With Atomic Force Regulation", Applied Physics Letters, vol. 60, No. 24, Jun. 15, 1992, NY, pp. 2957-2959.
Ataka Tatsuaki
Fujihira Masamichi
Sakuhara Toshihiro
Adams Bruce L.
Masamichi Fujihira
Nelms David C.
Seiko Instruments Inc.
Wilks Van C.
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