Optically operated actuator

Details Optically operated actuator Optically operated actuator

1991-09-25

1993-05-25

Ullah, Akm E.

Optical waveguides

Miscellaneous

385900, 385115, 251 11, 126569, 337298, 337327, G02B 600, F16K 2700

Patent

active

052147371

ABSTRACT:
An actuator includes a closed space defined by a deformable member in which an amount of thermally expansible gas is filled. In the closed space, there is also a substance which changes the light into the heat. A control device is set to establish the supply of the light into the closed space. Upon turning-on of the control device, the substance changes the supplied light into the heat, resulting in that the resultant heat brings the expansion of the gas. Thus, the member is brought into deformed condition. The deformation can be used as a force for operating a specific element.

REFERENCES:
patent: 3847547 (1974-11-01), Delgendre et al.
patent: 4065593 (1977-12-01), Peterson
patent: 4259593 (1981-03-01), Proud et al.
patent: 4758695 (1988-07-01), Sanford et al.
patent: 4821997 (1989-04-01), Zdeblick
patent: 4940896 (1990-07-01), Hagins et al.
patent: 4943032 (1990-07-01), Zdeblick
A resume announcing a conference of the Japan Society of Robot, held Sep. 20-22, 1988, pp. 275-276.
Journal of Japan Society of Robot, vol. 5, No. 2, pp. 3-17, published Apr., 1987 (the last page being and English abstract).

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