ATA344779A - DEVICE FOR GRADUALLY DARKENING IN A LARGE STAGE PROJECTION APPARATUS - Google Patents
DEVICE FOR GRADUALLY DARKENING IN A LARGE STAGE PROJECTION APPARATUSInfo
- Publication number
- ATA344779A ATA344779A AT344779A AT344779A ATA344779A AT A344779 A ATA344779 A AT A344779A AT 344779 A AT344779 A AT 344779A AT 344779 A AT344779 A AT 344779A AT A344779 A ATA344779 A AT A344779A
- Authority
- AT
- Austria
- Prior art keywords
- projection apparatus
- large stage
- stage projection
- gradually darkening
- darkening
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
- F21V11/10—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of iris type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782831422 DE2831422A1 (en) | 1978-07-18 | 1978-07-18 | DEVICE FOR GRADUALLY DARKENING IN A LARGE STAGE PROJECTION APPARATUS |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA344779A true ATA344779A (en) | 1981-02-15 |
AT364247B AT364247B (en) | 1981-10-12 |
Family
ID=6044630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT344779A AT364247B (en) | 1978-07-18 | 1979-05-08 | DEVICE FOR GRADUALLY DARKENING IN A LARGE STAGE PROJECTION APPARATUS |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT364247B (en) |
BE (1) | BE876437A (en) |
DE (1) | DE2831422A1 (en) |
FR (1) | FR2431658A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2582780B1 (en) * | 1985-05-31 | 1988-09-09 | Cameleon | LIGHTING DEVICE, PARTICULARLY ADJUSTABLE SCENIC PROJECTOR ACCORDING TO ALL ITS PARAMETERS |
-
1978
- 1978-07-18 DE DE19782831422 patent/DE2831422A1/en active Pending
-
1979
- 1979-05-08 AT AT344779A patent/AT364247B/en not_active IP Right Cessation
- 1979-05-17 FR FR7912642A patent/FR2431658A1/en active Granted
- 1979-05-21 BE BE6/46841A patent/BE876437A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2831422A1 (en) | 1980-01-31 |
FR2431658B3 (en) | 1982-04-02 |
AT364247B (en) | 1981-10-12 |
BE876437A (en) | 1979-09-17 |
FR2431658A1 (en) | 1980-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EIH | Change in the person of patent owner | ||
ELJ | Ceased due to non-payment of the annual fee | ||
ELJ | Ceased due to non-payment of the annual fee |