RO101644A2 - Diapositive and diafilm projection device - Google Patents
Diapositive and diafilm projection deviceInfo
- Publication number
- RO101644A2 RO101644A2 RO1988133563A RO13356388A RO101644A2 RO 101644 A2 RO101644 A2 RO 101644A2 RO 1988133563 A RO1988133563 A RO 1988133563A RO 13356388 A RO13356388 A RO 13356388A RO 101644 A2 RO101644 A2 RO 101644A2
- Authority
- RO
- Romania
- Prior art keywords
- screen
- projection device
- diafilm
- diapositive
- image
- Prior art date
Links
Landscapes
- Projection Apparatus (AREA)
Abstract
The invention concerns a device for slide projection in natural light that is used mainly in education institutions.In accordance with this invention, the device consists of a cuboid case placed on a base plate on wheels. A square hole is drilled in the case, enabling the images from the projection device to be projected by means of a periscope-type two-mirrored system, mounted at a 45-degree angle and turning the image upside down. The image is then reflected to a thin frosted glass translucent screen. A layer of reflecting substance is applied on the lower part of the screen, helping to increase contrast. The screen is placed in a protective frame.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO1988133563A RO101644A2 (en) | 1988-05-17 | 1988-05-17 | Diapositive and diafilm projection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO1988133563A RO101644A2 (en) | 1988-05-17 | 1988-05-17 | Diapositive and diafilm projection device |
Publications (1)
Publication Number | Publication Date |
---|---|
RO101644A2 true RO101644A2 (en) | 1991-12-09 |
Family
ID=20121706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO1988133563A RO101644A2 (en) | 1988-05-17 | 1988-05-17 | Diapositive and diafilm projection device |
Country Status (1)
Country | Link |
---|---|
RO (1) | RO101644A2 (en) |
-
1988
- 1988-05-17 RO RO1988133563A patent/RO101644A2/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2576147A (en) | Apparatus for projecting aerial images in high relief | |
DE3873680D1 (en) | X-RAY DIAGNOSTIC SYSTEM. | |
US3112354A (en) | Article and image comparing apparatus | |
RO101644A2 (en) | Diapositive and diafilm projection device | |
US3198097A (en) | Illuminating apparatus | |
GB2022861A (en) | Rear Projection Screen | |
US2302556A (en) | Display device | |
DE59813109D1 (en) | Image reproduction device | |
JPS644102Y2 (en) | ||
US1824620A (en) | Illuminated sign | |
JPS641875Y2 (en) | ||
US4112438A (en) | Method and projection apparatus | |
SE8105127L (en) | display devices | |
JPS6419863A (en) | Projector with image reading function | |
CA1093871A (en) | Optical system for visual analysis of two assemblies by superimposing of an image onto an assembly | |
JP2842337B2 (en) | Display for simulator | |
JPS60115232U (en) | Overhead projector with time display function | |
GB1333780A (en) | Optical arrangements | |
CN2032352U (en) | Stereoscopic display | |
JPS59123880U (en) | Lighting device for film liquid crystal display device | |
Keighley et al. | Reflections and Shadows | |
ES234558A1 (en) | Mechanical system of perspective applicable to the projection of images (Machine-translation by Google Translate, not legally binding) | |
JPS5896529U (en) | projection device | |
GB503300A (en) | Improvements in or relating to lighting systems | |
SE8902154D0 (en) | PRESENTATIONSFOERFARANDE |