Claims
- 1. A method for recording holograms, comprising the steps of:
- providing a substrate:
- providing on said substrate a single layer, said layer consisting of substantially pure gelatin capable of absorbing infrared radiation and having a thickness which is greater than the change in thickness caused by the contemplated exposure to the infrared radiation;
- generating a holographic pattern using infrared laser radiation; and
- exposing the layer to the holographic patterned infrared laser radiation to cause changes in the optical thickness thereof.
- 2. The method according to claim 1, wherein the step of providing a substrate comprises providing a transparent substrate.
- 3. The method according to claim 2, wherein the step of providing a substrate comprises providing a glass substrate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2333554 |
Jul 1973 |
DT |
|
Parent Case Info
This is a division of application Ser. No. 484,698, filed July 1, 1974 now abandoned.
US Referenced Citations (5)
Divisions (1)
|
Number |
Date |
Country |
Parent |
484698 |
Jul 1974 |
|