Patent US5132812A successfully refreshed from Google Patents.
US5132812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing display having diffraction grating patterns
Assignee: Toppan Inc
•
Filing: 1990-10-15
•
Granted: 1992-07-21
•
Expires: 2010-10-15
Abstract
Abstract A method of manufacturing a display having diffraction grating patterns, comprises the steps of (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer, (b) selecting nth image data from the plurality of image data, (c) inputting data of a reproducing light source position and a view direction, (d) inputting predetermined dot data of the nth image data, (e) determining a pitch and a direction of a grating and an area of a dot on the basis of the data of the reproducing light source position and the view direction and the dot data, (f) moving an X-Y stage to a predetermined position on the basis of the dot data and delineating the diffraction grating by using an electron scanning unit, (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed, and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Inventors
- 👤 Susumu Takahashi
- 👤 Toshiki Toda
- 👤 Fujio Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:09
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/26; G03H1/30; G02; G02B; G02B5/00; G02B5/18; G02B5/32; G03H1/04; G03H1/0476; G03H2001/0482; G03H1/0493; G03H2001/0497; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
234 words
A method of manufacturing a display having diffraction grating patterns, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch d and a direction Ω of a diffraction grating and an area of a dot on the basis of the data of the reproducing light source position and the view direction and the dot data, wherein the pitch d and a direction Ω are obtained according to the following equations: tan(Ω)=sin(α)/sin(θ) d=λ/√sin.sup.2 (θ)-sin.sup.2 (α) where θ is the incidence angle of illumination light, α is the direction of 1st-order diffracted light, and λ is the wavelength of the 1-st order diffracted light; (f) moving an X-Y stage to a predetermined position on the basis of the dot data and delineating the grating by using an electron scanning unit; (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 2
Independent Claim
234 words
A method of manufacturing a display having diffraction grating patterns, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch d and a direction Ω of a diffraction grating and an area of a dot on the basis of the data of the reproducing light source position and the view direction and the dot data, wherein the pitch d and a direction Ω are obtained according to the following equations: tan(Ω)=sin(α)/sin(θ) d=λ/√sin.sup.2 (θ)-sin.sup.2 (α) where θ is the incidence angle of illumination light, α is the direction of 1st-order diffracted light, and λ is the wavelength of the 1-st order diffracted light; (f) moving an X-Y stage to a predetermined position on the basis of the dot data and delineating the grating by using an electron scanning unit; (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 3
Independent Claim
234 words
A method of manufacturing a display having diffraction grating patterns by using a two-beam interference method, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch and a direction Ω of a diffraction grating an an exposure time on the basis of the data of the reproducing light source position and the view direction and the dot data, wherein the direction Ω of the diffraction grating is obtained according to the following equation: tan(Ω)=sin(α)/sin(θ) wherein θ is the incidence angle of illumination light, α is the direction of 1st-order diffracted light, and λ is the wavelength of the 1-st order diffracted light: (f) moving an X-Y-θ stage to a predetermined position on the basis of the dot data and forming the grating by using the two-beam interference method; (g) sequentially incrementing an address of the dot data and repeating the steps (d) and (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 4
Independent Claim
234 words
A method of manufacturing a display having diffraction grating patterns by using a two-beam interference method, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch and a direction Ω of a diffraction grating an an exposure time on the basis of the data of the reproducing light source position and the view direction and the dot data, wherein the direction Ω of the diffraction grating is obtained according to the following equation: tan(Ω)=sin(α)/sin(θ) wherein θ is the incidence angle of illumination light, α is the direction of 1st-order diffracted light, and λ is the wavelength of the 1-st order diffracted light: (f) moving an X-Y-θ stage to a predetermined position on the basis of the dot data and forming the grating by using the two-beam interference method; (g) sequentially incrementing an address of the dot data and repeating the steps (d) and (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
References Cited (Backward Citations)
US3646335A
Cited
US4498740A
Cited
US4846552A
Cited
US4778262A
Cited
US4929823A
Cited
US4896044A
Cited
US5016953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-21 | 1996-01-20 | 1996-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-21 | 2000-01-20 | 2000-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-21 | 2004-01-20 | 2004-07-21 | $7700.00 | Window Closed / Lapsed |