WO2023222727 - DISTANCE MEASURING
National phase entry:
Publication Number
WO/2023/222727
Publication Date
23.11.2023
International Application No.
PCT/EP2023/063183
International Filing Date
16.05.2023
Title **
[English]
DISTANCE MEASURING
[French]
MESURE DE DISTANCE
Applicants **
ETH ZURICH
Inventors
KELLER, Ursula
PHILLIPS, Christopher
PUPEIKIS, Justinas
WILLENBERG, Benjamin
CAMENZIND, Sandro
Priority Data
22174120.0
18.05.2022
EP
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2376 | |
| EPO | Filing, Examination, Granting | 12659 | |
| Japan | Filing, Examination, Granting | 2431 | |
| South Korea | Filing, Examination, Granting | 2534 | |
| USA | Filing, Examination, Granting | 8340 |
Total:
28,340
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The laser distance ranging method comprises splitting each of the two combs (11, 12) of dual comb radiation into a signal radiation portion (21, 22) and a local oscillator radiation portion (23, 24). The signal radiation portions are, after separation, combined into a combined signal radiation and directed, especially through a reference structure yielding a partial reflection, onto an object (10), the distance to which is to be measured. The signal thrown back from the object is split into a first signal portion and a second signal portion. The first signal portion (25) is superimposed with the second local oscillator (24) radiation portion to generate a first measurement signal, and the second signal portion (26) is superimposed with the first local oscillator radiation portion (23) to generate a second measurement signal. The distance to the object (10) is determined from the first and second measurement signals, and from reference signals obtained by the partial reflection, wherein the Vernier effect can be used to extend ambiguity by comparison of the first and second measurement signals.[French]
Le procédé de télémétrie par distance laser consiste à diviser chacun des deux peignes (11, 12) de rayonnement en peigne double en une partie de rayonnement de signal (21, 22) et une partie de rayonnement d'oscillateur local (23, 24). Les parties de rayonnement de signal sont, après séparation, combinées en un rayonnement de signal combiné et dirigées, en particulier à travers une structure de référence produisant une réflexion partielle, sur un objet (10), dont la distance doit être mesurée. Le signal renvoyé par l'objet est divisé en une première partie de signal et une seconde partie de signal. La première partie de signal (25) est superposée à la seconde partie de rayonnement d'oscillateur local (24) pour générer un premier signal de mesure, et la seconde partie de signal (26) est superposée à la première partie de rayonnement d'oscillateur local (23) pour générer un second signal de mesure. La distance à l'objet (10) est déterminée à partir des premier et second signaux de mesure, et à partir de signaux de référence obtenus par la réflexion partielle, l'effet Vernier pouvant être utilisé pour étendre l'ambiguïté par comparaison des premier et second signaux de mesure.