Patents Assigned to Massie Research Laboratories, Inc.
  • Publication number: 20050237486
    Abstract: A digital camera that combines the functions of the retinal camera and corneal camera into one, single, small, easy to use instrument is used to perform laser treatment therapy on a patient.
    Type: Application
    Filed: June 22, 2005
    Publication date: October 27, 2005
    Applicant: Massie Research Laboratories, Inc.
    Inventors: Wei Su, Norbert Massie
  • Patent number: 6685317
    Abstract: A digital camera that combines the functions of the retinal camera and corneal camera into one, single, small, easy to use instrument. The single camera can acquire digital images of a retinal region of an eye, and digital images of a corneal region of the eye. The camera includes a first combination of optical elements for making said retinal digital images, and a second combination of optical elements for making said corneal digital images. In a preferred embodiment, a portion of these elements are shared elements including a first objective element of an objective lens combination, a digital image sensor and at least one eyepiece for viewing either the retina or the cornea. Also, preferably, the retinal combination also includes a first changeable element of said objective lens system for focusing, in combination with said first objective element, portions or all of said retinal region at or approximately at a common image plane.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: February 3, 2004
    Assignee: Massie Research Laboratories, Inc.
    Inventors: Wei Su, Norbert A. Massie
  • Patent number: 6361167
    Abstract: A digital camera that combines the functions of the retinal camera and corneal camera into one, single, small, easy to use instrument. The single camera can acquire digital images of a retinal region of an eye, and digital images of a corneal region of the eye. The camera includes a first combination of optical elements for making said retinal digital images, and a second combination of optical elements for making said corneal digital images. A portion of these elements are shared elements including a first objective element of an objective lens combination, a digital image sensor and at least one eyepiece for viewing either the retina or the cornea. The retinal combination also includes a first changeable element of said objective lens system for focusing, in combination with said first objective element, portions or all of said retinal region at or approximately at a common image plane.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: March 26, 2002
    Assignee: Massie Research Laboratories, Inc.
    Inventors: Wei Su, Norbert A. Massie
  • Patent number: 5865742
    Abstract: A beam of acoustic energy comprising acoustic radiation and the associated acoustic streaming of an ultrasonic beam is used to indent or applanate (flatten) the eye. These two effects produce acoustic pressure on the eye which partially overcomes the IPO of the eye. A concurrent determination of acoustic pressure and the distortion of the eye allows one to determine the IOP.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: February 2, 1999
    Assignee: Massie Research Laboratories, Inc.
    Inventor: Norbert A. Massie
  • Patent number: 5636635
    Abstract: A non-contact tonometer is described for measuring the intraocular pressure (IOP) of the eye. An ultrasonic power transducer directs an ultrasonic beam onto the eye and the force generated by the radiation pressure causes indentation or applanation which is detected with an ultrasonic or optical detector. An optical system provides an image of the eye with appropriate alignment beams injected through a beam splitter for positioning the device with respect to the eye. An additional ultrasonic beam may be used to measure the range to the eye. Another optical detector, is utilized to measure applanation or indentation; alternatively, an additional ultrasonic transducer and beam could be used. Operation of the device may be through continuous wave or pulsed excitation of the ultrasound. Feed-back control of the ultrasound power level is possible using an additional ultrasonic transducer for measuring the power levels to augment measurement accuracy.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: June 10, 1997
    Assignee: Massie Research Laboratories, Inc.
    Inventors: Norbert A. Massie, Bruce W. Maxfield
  • Patent number: 5396888
    Abstract: A non-contact tonometer is described for measuring the intra-ocular pressure (IOP) of the eye. An ultrasonic power transducer directs an ultrasonic beam onto the eye and the force generated by the radiation pressure causes indentation or applanation which is detected by ultrasonic or optical means. An optical system provides an image of the eye with appropriate alignment beams injected through a beam splitter for positioning the device with respect to the eye. An additional ultrasonic beam may be used to measure the range to the eye. Another optical means is utilized to measure applanation or indentation; alternatively, an additional ultrasonic transducer and beam could be used. Operation of the device may be through continuous wave or pulsed excitation of the ultrasound. Feed-back control of the ultrasound power level is possible using an additional ultrasonic transducer for measuring the power levels to augment measurement accuracy.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: March 14, 1995
    Assignee: Massie Research Laboratories, Inc.
    Inventors: N. A. Massie, Bruce W. Maxfield