CA1039544A - Microform projection apparatus - Google Patents
Microform projection apparatusInfo
- Publication number
- CA1039544A CA1039544A CA240,840A CA240840A CA1039544A CA 1039544 A CA1039544 A CA 1039544A CA 240840 A CA240840 A CA 240840A CA 1039544 A CA1039544 A CA 1039544A
- Authority
- CA
- Canada
- Prior art keywords
- microform
- platen
- lens assembly
- platen member
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011521 glass Substances 0.000 claims abstract description 43
- 238000013461 design Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000009827 uniform distribution Methods 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
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53063574A | 1974-12-09 | 1974-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1039544A true CA1039544A (en) | 1978-10-03 |
Family
ID=24114363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA240,840A Expired CA1039544A (en) | 1974-12-09 | 1975-12-01 | Microform projection apparatus |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5168828A (oth) |
| CA (1) | CA1039544A (oth) |
| DE (1) | DE2554909A1 (oth) |
| FR (1) | FR2294466A1 (oth) |
| GB (1) | GB1494294A (oth) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2643288C2 (de) * | 1976-09-25 | 1986-01-09 | Agfa-Gevaert Ag, 5090 Leverkusen | Mikrofilm-Lesegerät |
| DE2746988C2 (de) * | 1977-10-19 | 1989-08-31 | Peter 6351 Wisselsheim Dziemba | Vorrichtung zum Lesen und/oder Rückvergrößern von mikroverfilmten Informationen und Bildern, sowie Kassette hierfür |
| DE3343973C2 (de) * | 1983-12-06 | 1986-07-24 | Fa. Ed. Liesegang, 4000 Düsseldorf | Mikrofilm-Projektor |
-
1975
- 1975-09-22 JP JP11464575A patent/JPS5168828A/ja active Pending
- 1975-11-28 GB GB4899375A patent/GB1494294A/en not_active Expired
- 1975-12-01 CA CA240,840A patent/CA1039544A/en not_active Expired
- 1975-12-06 DE DE19752554909 patent/DE2554909A1/de active Pending
- 1975-12-08 FR FR7537416A patent/FR2294466A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2294466B1 (oth) | 1979-06-22 |
| FR2294466A1 (fr) | 1976-07-09 |
| GB1494294A (en) | 1977-12-07 |
| DE2554909A1 (de) | 1976-06-16 |
| JPS5168828A (ja) | 1976-06-14 |
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