Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-08-24
1990-04-24
Lee, John D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307430, 350 37, 35016216, G02F 137
Patent
active
049195115
ABSTRACT:
A fibre-type light conversion device for converting the wavelength of an incident light. According to the first feature of the invention the device has a structure in which a holographic element whose complex transparency varies periodically with respect to the distance from an optical axis is used as a means for transforming the light, to which the conversion of wavelength has been performed by a fibre-type SHG, into a parallel light. According to the second feature of the invention, the device is constructed so that the temperature of the light source or the holographic element can be controlled, thereby a parallel light having planer wave fronts is surely generated irrespectively of differences in the shape of the fibre-type SHG or variations in the refractive index.
REFERENCES:
patent: 2080120 (1937-05-01), Everett
patent: 2442913 (1948-06-01), Abrams et al.
patent: 3728117 (1973-04-01), Heidenhain et al.
patent: 4838638 (1989-06-01), Kamiyama et al.
Lee John D.
Pioneer Electronic Corporation
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