Control systems for adaptive lens
First Claim
Patent Images
1. An imager for use in a data collection device, said imager comprising a fluid lens system for focusing light received by said data collection device from a target image, said fluid lens system comprising:
- an optically clear front window,a fluid lens having a front surface and a rear surface,a first volume bounded by said front window and said front surface of said fluid lens, said first volume having a first fluid disposed therein;
an optically clear rear window;
a second volume bounded by the front surface of said fluid lens and said rear window, said second volume having a second fluid disposed therein; and
a sealed system comprising a pump, a first channel connecting said first volume to said pump, and a second channel connecting said second volume to said pump,wherein said pump comprises a seal that separates said first fluid and said second fluid, and wherein operation of said pump to effect a first change in the quantity of fluid in either of said first volume or said second volume results in a corresponding second change in the quantity of fluid in the other of said first volume or said second volume, wherein the front surface of said fluid lens defines a meniscus, and wherein the fluid lens system is operative so that curvature of the meniscus is changed responsively to change in the quantity of fluid in either of said first volume or said second volume.
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Accused Products
Abstract
Systems and methods for controlling a fluid lens in a data collection device. One or more micropump control systems are used to control one or more fluid lenses. The micropump control systems are used to change volume and/or pressure within the fluid lens system, changing the radius of curvature of the lens.
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Citations
19 Claims
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1. An imager for use in a data collection device, said imager comprising a fluid lens system for focusing light received by said data collection device from a target image, said fluid lens system comprising:
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an optically clear front window, a fluid lens having a front surface and a rear surface, a first volume bounded by said front window and said front surface of said fluid lens, said first volume having a first fluid disposed therein; an optically clear rear window; a second volume bounded by the front surface of said fluid lens and said rear window, said second volume having a second fluid disposed therein; and a sealed system comprising a pump, a first channel connecting said first volume to said pump, and a second channel connecting said second volume to said pump, wherein said pump comprises a seal that separates said first fluid and said second fluid, and wherein operation of said pump to effect a first change in the quantity of fluid in either of said first volume or said second volume results in a corresponding second change in the quantity of fluid in the other of said first volume or said second volume, wherein the front surface of said fluid lens defines a meniscus, and wherein the fluid lens system is operative so that curvature of the meniscus is changed responsively to change in the quantity of fluid in either of said first volume or said second volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A data reader for reading an indicium, said data reader comprising a case configured to be held in a hand of a user of the data reader, said case configured to house components of said data reader, said components comprising:
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a lens system for focusing illumination representing an image of said indicium, said lens system comprising a fluid lens; a fluid lens control module for applying a fluid lens control signal to said fluid lens to control an operational parameter thereof; an image sensor for receiving said focused illumination representing said image of said indicium; an image sensor control module for operating said image sensor to capture data comprising at least a portion of a frame of image data from said focused illumination representing said image of said indicium; and a processing module for processing said at least a portion of said frame of image data to extract therefrom information by the indicium, said lens system further comprising; an optically clear front window, a fluid lens having a front surface and a rear surface, a first volume bounded by said front window and said front surface of said fluid lens, said first volume having a first fluid disposed therein an optically clear rear window, and a second volume bounded by the front surface of said fluid lens and said rear window, said second volume having a second fluid disposed therein; and a sealed system comprising a pump, a first channel connecting said first volume to said pump and a second channel connecting said second volume to said pump wherein said pump comprises a seal that separates said first fluid and said second fluid, and wherein operation of said pump to effect a first change in the quantity of fluid in either of said first volume or said second volume results in a corresponding second change in the quantity of fluid in the other of said first volume or said second volume.
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Specification