Method of manufacturing display having diffraction grating patterns

United States Patent [19]

Takahashi et al.

[54] METHOD OF MANUFACTURING DISPLAY HAVING DIFFRACTION GRATING PATTERNS

[75] Inventors: Susumu Takahashi, Matsudo; Toshiki Toda, Satte; Fujio Iwata, Chiba, all of Japan

[73] Assignee: Toppan Printing Co., Ltd., Tokyo, Japan

[21] Appl. No.: 597,229

[22] Filed: Oct. 15, 1990

[30] Foreign Application Priority Data

Oct. 16, 1989 [JP] Japan 1-268780

[51] Int. CI.* G03H 1/08

[52] U.S. CI 359/9; 359/569;

359/900

[58] Field of Search 350/3.66, 162.11, 162.17,

350/162.18, 162.2, 320; 250/492.3

[56] References Cited

U.S. PATENT DOCUMENTS

3,646,335 2/1972 Cindrich 350/3.66

4,498,740 2/1985 Caulfield 350/3.66

4,778,262 10/1988 Haines 350/3.66

4,846,552 7/1989 Veldkamp et al 250/492.1

4,896,044 1/1990 Li et al 250/492.3

4,929,823 5/1990 Kato et al 250/201.5

[ii] Patent Number: 5,132,812 [45] Date of Patent: Jul. 21, 1992

5,016,953 5/1991 Moss et al 350/3.66

Primary Examiner—Bruce Y. Arnold
Assistant Examiner—J. P. Ryan
Attorney, Agent, or Firm—Armstrong, Nikaido,
Marmelstein, Kubovcik and Murray

[57] ABSTRACT

A method of manufacturing a display having diffraction grating patterns, includes 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 in 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, (0 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.

2 Claims, 8 Drawing Sheets