Shutter with Linear Actuator
a linear actuator and shutter technology, applied in the field of optical shutters, can solve the problems of mechanical complexity, large footprint, and large size of shutter blades and supporting features, and achieve the effect of compact footprint and advanced optical shutter design
Active Publication Date: 2017-12-28
MELLES GRIOT
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- Description
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- Application Information
AI Technical Summary
Benefits of technology
The solution provides a compact, cost-effective, and energy-efficient optical shutter system that maintains stability in both open and closed positions without continuous power, addressing the complexity and cost issues of conventional designs.
Problems solved by technology
One disadvantage of monostable actuators for shutter control relates to their behavior upon power loss; these actuators require continuous power to remain in the electrically driven state.
Conventional rotary shutters are characterized by arrangements of shutter blades and supporting features that can be mechanically complex, sizable, and relatively costly.
Method used
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[0027]Figures provided herein are given in order to illustrate principles of operation and component relationships according to the present invention and are not drawn with intent to show actual size or scale. Some exaggeration may be necessary in order to emphasize basic structural or functional relationships or principles of operation. Some conventional components that would be needed for implementation of the described embodiments, such as support components used for providing power, for packaging, and for mounting, for example, are not shown in the drawings in order to simplify description of the invention. In the drawings and text that follow, like components are designated with like reference numerals, and similar descriptions concerning components and arrangement or interaction of components already described may be omitted.
[0028]Where they are used, the terms “first”, “second”, and so on, do not necessarily denote any ordinal or priority relation, but may be used for more cl...
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Abstract
An optical shutter apparatus has a baseplate that defines an aperture in a plane and that has at least first and second tabs that extend outward from the plane. At least a first linear actuator is coupled to the first tab and drives a magnetic shaft between the first and second tabs according to an electrical signal. A shutter blade is coupled to the magnetic shaft and is linearly translatable along a translation path in the direction of the plane between a first and a second position, wherein the shutter blade blocks at least a first portion of the aperture in the first position and unblocks the first portion of the aperture in the second position.
Description
FIELD OF THE INVENTION[0001]The present invention relates generally to optical shutter apparatus and more particularly relates to optical shutter apparatus with a linear actuator.BACKGROUND OF THE INVENTION[0002]Optical shutters use an actuator to drive each of one or more radiation-blocking elements or “shutter blades”, between a first, closed position that blocks the path of light through at least a portion of an aperture and a second, open position that is spaced apart from the first position and that allows light through the aperture. The light radiation that is directed toward the aperture can generally be any form of electromagnetic radiation, such as ultra-violet, visible or infrared radiation, for example. The aperture can be in a frame or baseplate that is directly or indirectly coupled to the actuator. The frame can additionally support the actuator and can include features that retain the shutter blade or blades and that define the travel path of the shutter blade or blad...
Claims
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IPC IPC(8): G02B26/04H01F7/16
CPCG02B26/04H01F7/1607H01F7/1615G01J1/044G01J1/0403G03B9/36
Inventor STEPHENSON, STANLEY W.
Owner MELLES GRIOT