BE403978A - - Google Patents
Info
- Publication number
- BE403978A BE403978A BE403978DA BE403978A BE 403978 A BE403978 A BE 403978A BE 403978D A BE403978D A BE 403978DA BE 403978 A BE403978 A BE 403978A
- Authority
- BE
- Belgium
- Prior art keywords
- wave
- film
- image
- positive half
- alternating current
- Prior art date
Links
- 230000008033 biological extinction Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 description 16
- 238000005286 illumination Methods 0.000 description 4
- 244000027321 Lychnis chalcedonica Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/202—Incandescent light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE403978A true BE403978A (OSRAM) |
Family
ID=69451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE403978D BE403978A (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE403978A (OSRAM) |
-
0
- BE BE403978D patent/BE403978A/fr unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BE403978A (OSRAM) | ||
| FR2553529A1 (fr) | Dispositif photographique et procede de mesure des conditions d'exposition | |
| JPS6162440A (ja) | 内視鏡の光量制御装置 | |
| JPH07319068A (ja) | メタルハライドランプの点灯方法および画像表示装置 | |
| US4457618A (en) | Optical system for use in electronic enlarger | |
| FR2499796A1 (fr) | Circuit de deviation horizontale en mode double | |
| JPH07336501A (ja) | 光源を含んだ撮像システム | |
| US2414319A (en) | Device for recording television programs | |
| JP2000196924A (ja) | ２重レーザ照明を用いた溶接部撮像装置 | |
| FR2676840A1 (fr) | Appareil photo comportant un flash. | |
| JP2009508166A (ja) | 無電極の光源を備えた動画投影機 | |
| US3567344A (en) | Illuminating device for original of an electrophotographic duplicating machine | |
| US3836923A (en) | Contrast control apparatus for a camera | |
| US4987444A (en) | Method and apparatus for preventing light source degradation in an exposing apparatus employing a halogen lamp | |
| FR2511780A1 (fr) | Dispositif de mise au point pour appareil photographique | |
| BE412855A (OSRAM) | ||
| BE396697A (OSRAM) | ||
| Edgerton | The mercury arc as a source of intermittent light | |
| CH340134A (fr) | Appareil pour la copie photographique | |
| JP3418945B2 (ja) | 投光装置 | |
| JP5359161B2 (ja) | 照明光光源装置 | |
| BE900227A (fr) | Projecteur cinematographique. | |
| FR2572923A1 (fr) | Installation pour l'observation et la photographie de l'interieur de l'oeil | |
| FR2571915A1 (fr) | Systeme de prise de vues de television fonctionnant a des frequences differentes du secteur alternatif et de la trame de television et dispositif de prise de vues de television convenant a ce systeme | |
| FR2521851A1 (fr) | Dispositif d'eclairage permettant notamment l'obtention de macrophotographie de l'iris en vue d'un examen iridologique |