DE88889C - - Google Patents
Info
- Publication number
- DE88889C DE88889C DENDAT88889D DE88889DA DE88889C DE 88889 C DE88889 C DE 88889C DE NDAT88889 D DENDAT88889 D DE NDAT88889D DE 88889D A DE88889D A DE 88889DA DE 88889 C DE88889 C DE 88889C
- Authority
- DE
- Germany
- Prior art keywords
- lens
- glass
- dispersion
- negative
- curvature
- 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.)
- Active
Links
- 239000006185 dispersion Substances 0.000 claims description 26
- 239000011521 glass Substances 0.000 claims description 23
- 239000005308 flint glass Substances 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims 1
- 230000004075 alteration Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000002895 hyperchromatic effect Effects 0.000 description 8
- 239000005331 crown glasses (windows) Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000251539 Vertebrata <Metazoa> Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/02—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having one + component only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE88889C true DE88889C (enExample) |
Family
ID=360749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT88889D Active DE88889C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE88889C (enExample) |
-
0
- DE DENDAT88889D patent/DE88889C/de active Active
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