FI841439A - ACHROMATISC, HOLOGRAPHIC ELEMENT. - Google Patents
ACHROMATISC, HOLOGRAPHIC ELEMENT. Download PDFInfo
- Publication number
- FI841439A FI841439A FI841439A FI841439A FI841439A FI 841439 A FI841439 A FI 841439A FI 841439 A FI841439 A FI 841439A FI 841439 A FI841439 A FI 841439A FI 841439 A FI841439 A FI 841439A
- Authority
- FI
- Finland
- Prior art keywords
- relationship
- wavelengths
- holographic
- construction
- sines
- Prior art date
Links
Landscapes
- Holo Graphy (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The invention relates to holographic optical elements which operate on a plurality of wavelengths and with reduced distortions and a process for production thereof. The achromatic, holographic elements are produced by the use of an essentially conventional apparatus and method based upon the phenomenon that any two reflection wavelengths are diffracted at the same angle if the mutual relationship between their construction angles is inversely proportional to the relationship between their sines. In the case of holographic lenses, the diffracted wavelengths are brought moreover to a common focus if the mutual relationship between the focuses during the construction is inversely proportional to the relationship between the sines of their construction angles. Used in connection with a thick reproduction medium, the method produces an optical element with a symmetrical pair of outgoing rays having two independent focuses. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI841439A FI81691C (en) | 1984-04-11 | 1984-04-11 | Acromatic, holographic diffracting, optical element and process for making this |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI841439 | 1984-04-11 | ||
FI841439A FI81691C (en) | 1984-04-11 | 1984-04-11 | Acromatic, holographic diffracting, optical element and process for making this |
Publications (4)
Publication Number | Publication Date |
---|---|
FI841439A0 FI841439A0 (en) | 1984-04-11 |
FI841439A true FI841439A (en) | 1985-10-12 |
FI81691B FI81691B (en) | 1990-07-31 |
FI81691C FI81691C (en) | 1990-11-12 |
Family
ID=8518897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI841439A FI81691C (en) | 1984-04-11 | 1984-04-11 | Acromatic, holographic diffracting, optical element and process for making this |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI81691C (en) |
-
1984
- 1984-04-11 FI FI841439A patent/FI81691C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI841439A0 (en) | 1984-04-11 |
FI81691C (en) | 1990-11-12 |
FI81691B (en) | 1990-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: GRUMMAN AEROSPACE CORPORATION |