Method for producing a display with a diffraction grating pattern and a display produced by the method

• US 5,058,992 A
• Filed: 11/25/1988
• Issued: 10/22/1991
• Est. Priority Date: 09/07/1988
• Status: Expired due to Term

• Current Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Original Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Inventors: Takahashi, Susumu
• Primary Examiner(s): Arnold, Bruce Y.
• Assistant Examiner(s): Phan, James
• Application Number:
  US07/276,469
• Time in Patent Office: 1,061 Days
• Field of Search: 350/162.11, 350/162.17, 350/162.24, 350/3.66, 350/162.12, 350/3.73, 350/320
• US Class Current: 359/567
• CPC Class Codes: G02B 5/1842 Gratings for image generation G02B5/1847 takes precedence
• CPC Class Codes: G03H 1/30 discrete holograms only
• CPC Class Codes: G03H 2001/0482 Interference based printer
• CPC Class Codes: G03H 2001/0497 Dot matrix holograms
• CPC Class Codes: G03H 2224/04 Particle beam, e.g. e-beam
• CPC Class Codes: H04N 1/508 using the same reproducing head for two or more colour components

Abstract

A method for producing a display with a diffraction grating pattern comprising the steps of reading image data, assigning color for light exposure and moving a slit of an optical system to a position corresponding to the assigned color, moving an origin of an X-Y stage and setting initial data of the assigned color, reading data of an assigned address of the image data and opening a shutter of the optical system for light exposure when data of the assigned color exists, moving the X-Y stage to increase the address by one and repeating the data-reading and shutter-opening step until no further data exists, and changing the assigned color and repeating the above sequence of steps until no further color exists.

Claims

1. A method for producing a display with a diffraction grating pattern, comprising the steps of:

reading image data;

assigning a color for a light exposure range and moving a slit of an optical system to a position corresponding to said assigned color;

moving an origin of an x-y stage and setting initial data of said assigned color;

reading data of an assigned address of said image data and opening a shutter of said optical system for light exposure when data of said assigned color exists;

moving said x-y stage to increase said address by one and repeating said data-reading and shutter-opening step until no further data within said light exposure color range exists; and

changing said assigned color for a light exposure range and repeating the above sequence of steps until no further light exposure data exists.

2. A method for producing a display with a diffraction grating pattern, comprising the steps of:

reading image data;

inputting visual field data to a computer;

moving an origin of an X-Y stage;

inputting an initial value of dot data;

determining a pitch, direction and curvature of a diffraction grating based on said dot data;

moving said X-Y stage to a position corresponding to said dot data based on the dot data;

delineating said diffraction grating using an electron beam exposing device; and

increasing an address corresponding to said dot data by one and repeating the above sequence of steps starting from said initial-value inputting step.

3. A display with a diffraction grating pattern comprising:

a plane substrate; and

a diffraction grating pattern formed on a surface of said substrate and divided into a plurality of minute dots, pitches and orientations of said dots and spatial frequencies of diffraction gratings formed in said dots being varied as desired, directions of said diffraction gratings being varied dot by dot.

4. A display with a diffraction grating pattern comprising:

a plane substrate; and

a diffraction grating pattern formed on a surface of said substrate and divided into a plurality of minute dots, pitches and orientations of said dots and spatial frequencies of diffraction gratings formed in said dots being varied as desired, each of said diffraction gratings being formed with curved lines.

5. A display with a diffraction grating pattern comprising:

a plane substrate; and

a diffraction grating pattern formed on a surface of said substrate and divided into a plurality of minute dots, pitches and orientations of said dots and spatial frequencies of diffraction gratings formed in said dots being varied as desired, each of said diffraction gratings having a plurality of spatial frequency components.