BE497181A - - Google Patents
Info
- Publication number
- BE497181A BE497181A BE497181DA BE497181A BE 497181 A BE497181 A BE 497181A BE 497181D A BE497181D A BE 497181DA BE 497181 A BE497181 A BE 497181A
- Authority
- BE
- Belgium
- Prior art keywords
- optical apparatus
- light
- transparent
- face
- block
- Prior art date
Links
- 230000003287 optical Effects 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 9
- 229920005439 Perspex® Polymers 0.000 claims description 7
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims 1
- 230000001681 protective Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000012141 concentrate Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 101710026330 Segment-11 Proteins 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/1809—Daylight signals
- B61L5/1836—Daylight signals using light sources of different colours and separate optical systems
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE497181A true BE497181A (zh) |
Family
ID=140215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE497181D BE497181A (zh) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE497181A (zh) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941458A (en) * | 1973-07-02 | 1976-03-02 | Raytheon Company | Catoptric lens arrangement |
| US4907864A (en) * | 1987-08-19 | 1990-03-13 | John E. Fetzer Foundation | Macro-gradient optical density transmissive light concentrators, lenses and compound lenses of large geometry |
| US5042928A (en) * | 1990-02-20 | 1991-08-27 | Eastman Kodak Company | Parallel catadioptric optical element |
| WO2002052354A2 (de) * | 2000-12-22 | 2002-07-04 | Xetos Ag | Optisches system |
| WO2008099310A1 (en) * | 2007-02-12 | 2008-08-21 | Koninklijke Philips Electronics N.V. | Lighting device comprising at least one led |
-
0
- BE BE497181D patent/BE497181A/fr unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941458A (en) * | 1973-07-02 | 1976-03-02 | Raytheon Company | Catoptric lens arrangement |
| US4907864A (en) * | 1987-08-19 | 1990-03-13 | John E. Fetzer Foundation | Macro-gradient optical density transmissive light concentrators, lenses and compound lenses of large geometry |
| US5042928A (en) * | 1990-02-20 | 1991-08-27 | Eastman Kodak Company | Parallel catadioptric optical element |
| WO2002052354A2 (de) * | 2000-12-22 | 2002-07-04 | Xetos Ag | Optisches system |
| WO2002052354A3 (de) * | 2000-12-22 | 2003-03-13 | Xetos Ag | Optisches system |
| WO2008099310A1 (en) * | 2007-02-12 | 2008-08-21 | Koninklijke Philips Electronics N.V. | Lighting device comprising at least one led |
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