Green light laser imaging method
AssigneeLumisys, Inc.
InventorBala S. Manian
Life of this patent
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Abstract
A method for digital imaging employing a green light laser. The method comprises obtaining a digitized picture image, modulating a green light laser beam in accord with the digitized picture image, and directing the modulated laser beam onto film that is sensitive to green-blue light. The film is then developed to create a gray-scale image useful in radiography and other imaging fields.
Claims8
A method of laser imaging comprising the steps of,
- recording on X-ray film a gray-scale picture image corresponding to an X-ray irradiated subject,
- digitizing the recorded picture image by means of a film digitizer,
- modulating a single laser beam of green light wavelength in accordance with the digitized picture image,
- directing the modulated laser beam of green light wavelength onto film sensitive to green-blue light, and
- thereafter developing the film to create a gray-scale re-recorded image, whereby the re-recorded image has optical characteristics to the human eye matching those of the picture image on the conventional black and clear X-ray film.
A method of digital imaging using a laser comprising the steps of,
- obtaining signals representing a digitized picture image corresponding to an X-ray irradiated subject,
- providing a single laser beam of green light wavelength,
- modulating the laser of green light wavelength beam in accordance with the signals representing the digitized picture image,
- directing the modulated laser beam onto film sensitive to the green-blue light, thereby producing a latent image in the film, and
- thereafter developing the film to create a gray-scale image.
A method of digital imaging using a laser comprising the steps of,
- obtaining signals representing a digitized picture image corresponding to an X-ray irradiated subject,
- doubling the frequency of a single laser beam of a diode laser to produce a beam of green light wavelength,
- modulating the doubled laser beam in accordance with the signals representing the digitized picture image,
- directing the modulated laser beam onto film sensitive to green-blue light, thereby producing a latent image in the film, and
- thereafter developing the film to create a gray-scale image.
A method of digital radiography using a laser beam comprising the steps of,
- irradiating a subject with X-ray radiation,
- collecting a set of X-ray energy signals from the irradiated subject,
- digitizing the set of X-ray energy signals into digital data signals,
- storing and processing the digital data signals,
- modulating a single laser beam of green light wavelength in accordance with the stored and processed digital data signals,
- directing the modulated laser of a green light wavelength beam onto film sensitive to green-blue light thereby producing a latent image in the film, and
- thereafter developing the film to create a gray-scale image.
Dependencies are inferred from the claim text.