Method of preparing a color hologram suitable for display purpos

Facsimile and static presentation processing – Static presentation processing – Attribute control

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358 90, 350 383, H04N 1500

Patent

active

049874799

ABSTRACT:
A method of preparing a hologram of an object on holographic material by a holographic laser exposure, by illuminating the object with white light and capturing the luminance values of the object using a detector having a filter which simulates the response of the human eye to luminance values and which detector is placed as if it were along the axis of the laser to be used for the holographic exposure and storing the luminance information as a positive image, illuminating the object with incident light of substantially the same wavelength as the laser light to be used for the holographic exposure and capturing the reflectance values from the object using a detector which is placed as if it were along the axis of the laser to be used for the holographic exposure and storing the reflectance information as a negative image, carrying out a holographic exposure of the object on to holographic material there being present in the object beam between the laser and the object light modulation means which represents the sum of the stored luminance and reflectance information and processing the holographic material to fix the holographic fringes therein. Preferably the white light employed is specular white light.
The resultant hologram when reconstructed exhibits a similar reflectance and tonal range pattern to that of the object when viewed in a white light by the human eye.

REFERENCES:
patent: T861026 (1969-04-01), Harper et al.
patent: 3566021 (1971-02-01), Jakes, Jr.
patent: 3600056 (1971-08-01), King, Jr.
patent: 3625584 (1971-12-01), St. John
patent: 3647289 (1972-03-01), Weber
patent: 3695744 (1972-10-01), Clay
patent: 3826555 (1974-07-01), Matsumoto
patent: 3860950 (1975-01-01), Wick et al.
patent: 4007481 (1977-02-01), St. John
patent: 4142204 (1979-02-01), Hannan
patent: 4235505 (1980-11-01), Hariharan et al.
patent: 4375649 (1983-03-01), Mir et al.
patent: 4378142 (1983-03-01), Ono
patent: 4378568 (1983-03-01), Mir
patent: 4442455 (1984-04-01), Huignard et al.
patent: 4610499 (1986-09-01), Chern et al.
patent: 4623214 (1986-11-01), Bazargan
patent: 4623215 (1986-11-01), Bazargan
patent: 4712852 (1987-12-01), Funato et al.
patent: 4758093 (1988-07-01), Stern et al.
patent: 4895419 (1990-01-01), Doyle et al.
C. J. Kramer, "Holographic Laser Scanners for Nonimpact Printing", 2394 Laser Focus, vol. 17 (1981), Jun., No. 6.
H. P. Herzig et al., "Holographic Optical Scanning Elements: Analytical Method for Determining the Phase Function", 736A J. Opt. Soc. Am. A/Optics & Image Science 4, No. 6 (1987), Jun.
A. W. Pressdee, "Holografische Kopien sind Falschungssicher", 2253 Laser und Optoelektronik, 18 (1986), Mar., No. 1.
Y. Belvaux, "Duplication des Hologrammes", Annales De Radioelectricite, T. XXII., No. 88, 22 Apr. 1967.
"Preparation of Reflection Holograms by Interference Copying of Transmission Holograms", V. A. Vanin, 2287 Soviet J of Quantum Electronics, vol. 8, No. 7 (1978.07), New York.
European Search Report, RS 81117 CH.
European Search Report, RS 81286 CH.
European Search Report, RS 81287 CH.
Patent Abstract of Japan, vol. 8, No. 31, Feb. 9, 1984.
Patent Abstract of Japan, vol. 10, No. 19, Jan. 24, 1986.
Patent Abstract of Japan, vol. 7, No. 224, Oct. 5, 1983.
Patent Abstract of Japan, vol. 3, No. 38, Mar. 30, 1979 believed to relate to Japanese Patent 54-17865.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of preparing a color hologram suitable for display purpos does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preparing a color hologram suitable for display purpos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing a color hologram suitable for display purpos will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1558112

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.