CA1036403A - Apparatus for determining the position of a focal plane - Google Patents
Apparatus for determining the position of a focal planeInfo
- Publication number
- CA1036403A CA1036403A CA242,233A CA242233A CA1036403A CA 1036403 A CA1036403 A CA 1036403A CA 242233 A CA242233 A CA 242233A CA 1036403 A CA1036403 A CA 1036403A
- Authority
- CA
- Canada
- Prior art keywords
- optical
- photo
- grating
- light
- reference beam
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 238000012634 optical imaging Methods 0.000 claims abstract description 16
- 210000001747 pupil Anatomy 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims abstract description 7
- 238000003384 imaging method Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 description 3
- 241000109539 Conchita Species 0.000 description 1
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 240000004543 Vicia ervilia Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- FBWNMEQMRUMQSO-UHFFFAOYSA-N tergitol NP-9 Chemical compound CCCCCCCCCC1=CC=C(OCCOCCOCCOCCOCCOCCOCCOCCOCCO)C=C1 FBWNMEQMRUMQSO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
- G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eye Examination Apparatus (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Automatic Focus Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measurement Of Optical Distance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2460805A DE2460805C2 (de) | 1974-12-21 | 1974-12-21 | Optischer Entfernungsmesser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1036403A true CA1036403A (en) | 1978-08-15 |
Family
ID=5934218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA242,233A Expired CA1036403A (en) | 1974-12-21 | 1975-12-18 | Apparatus for determining the position of a focal plane |
Country Status (9)
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2637284C3 (de) * | 1976-08-19 | 1980-02-14 | Ernst Leitz Wetzlar Gmbh, 6300 Lahn- Wetzlar | Verfahren und Anordnungen zur automatischen Parallaxebestimmung |
| US4269512A (en) * | 1979-02-21 | 1981-05-26 | Nosler John C | Electro-optical position-monitoring apparatus with tracking detector |
| DE3009535A1 (de) * | 1980-03-12 | 1981-09-17 | Siemens Ag | Optikmodul fuer einen optoelektronischen entfernungsmesser |
| DE3039425A1 (de) * | 1980-10-18 | 1982-05-19 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Einrichtung zur fotoelektrischen bestimmung der lage mindestens einer schaerfenebene eines bildes |
| JPS57128810A (en) * | 1981-02-03 | 1982-08-10 | Olympus Optical Co Ltd | Distance measuring device |
| DE3219503C2 (de) * | 1982-05-25 | 1985-08-08 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Vorrichtung zum selbsttätigen Fokussieren auf in optischen Geräten zu betrachtende Objekte |
| JPS58207013A (ja) * | 1982-05-25 | 1983-12-02 | Olympus Optical Co Ltd | 合焦検出方法 |
| DD234340A3 (de) * | 1984-05-02 | 1986-04-02 | Zeiss Jena Veb Carl | Automatische fokussiereinrichtung |
| IT1201256B (it) * | 1985-03-19 | 1989-01-27 | Consiglio Nazionale Ricerche | Perfezionamento nei dispositivi per la messa a fuoco automatica dei sistemi ottici,in particolare microspopi e strumenti per l'acquisizione elettronica di immagini microscopiche |
| DE3537782A1 (de) * | 1985-10-24 | 1987-04-30 | Leitz Ernst Gmbh | Abtastgitter fuer einen schaerfedetektor |
| US4808807A (en) * | 1986-12-04 | 1989-02-28 | General Signal Corp. | Optical focus sensor system |
| FR2726496B1 (fr) * | 1994-11-09 | 1997-01-17 | Aerospatiale | Procede de localisation spatiale du point focal d'un faisceau laser d'une machine d'usinage et outillage pour la mise en oeuvre de ce procede |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3347129A (en) * | 1964-10-29 | 1967-10-17 | Wilhelm J Lohninger | Photoelectric range finder |
| GB1249302A (en) * | 1968-01-16 | 1971-10-13 | Secr Defence | Improvements in or relating to optical beam splitter devices and apparatus |
| DE2003492A1 (de) * | 1970-01-27 | 1971-08-12 | Leitz Ernst Gmbh | Messverfahren fuer Schrittgeber zum Messen von Laengen oder Winkeln sowie Anordnungen zur Durchfuehrung dieses Messverfahrens |
| DE2156617C3 (de) * | 1971-11-15 | 1980-08-21 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Einrichtung zur Bestimmung der Lage der Ebene maximaler Amplitude einer Ortsfrequenz, beispielsweise bei einem Entfernungsmesser |
| AT353497B (de) * | 1972-05-23 | 1979-11-12 | Leitz Ernst Gmbh | Vorrichtung an mikroskopen, zum automatischen fokussieren des geraetes auf unterschiedliche objekt-ebenen |
-
1974
- 1974-12-21 DE DE2460805A patent/DE2460805C2/de not_active Expired
-
1975
- 1975-10-09 GB GB41378/75A patent/GB1510807A/en not_active Expired
- 1975-10-15 US US05/622,452 patent/US4037958A/en not_active Expired - Lifetime
- 1975-10-16 CH CH1345175A patent/CH609453A5/xx not_active IP Right Cessation
- 1975-12-09 NL NL7514326A patent/NL7514326A/xx not_active Application Discontinuation
- 1975-12-18 FR FR7538940A patent/FR2295443A2/fr active Granted
- 1975-12-18 SE SE7514410A patent/SE424472B/xx not_active IP Right Cessation
- 1975-12-18 CA CA242,233A patent/CA1036403A/en not_active Expired
- 1975-12-19 IT IT7151/75A patent/IT1052720B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| IT1052720B (it) | 1981-07-20 |
| GB1510807A (en) | 1978-05-17 |
| FR2295443A2 (fr) | 1976-07-16 |
| FR2295443B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-05-11 |
| SE424472B (sv) | 1982-07-19 |
| CH609453A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-02-28 |
| US4037958A (en) | 1977-07-26 |
| NL7514326A (nl) | 1976-06-23 |
| SE7514410L (sv) | 1976-06-22 |
| DE2460805C2 (de) | 1983-01-27 |
| DE2460805A1 (de) | 1976-06-24 |
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