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1. (WO2013155636) ELECTRO-OPTIC MODULATOR AND ELECTRO-OPTIC DISTANCE-MEASURING DEVICE
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Pub. No.:
WO/2013/155636
International Application No.:
PCT/CH2013/000035
Publication Date:
24.10.2013
International Filing Date:
06.03.2013
IPC:
G02F 1/035
(2006.01),
G01S 17/32
(2006.01),
G02F 1/225
(2006.01),
G02F 1/03
(2006.01)
G
PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
03
based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
035
in an optical waveguide structure
G
PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02
Systems using the reflection of electromagnetic waves other than radio waves
06
Systems determining position data of a target
08
for measuring distance only
32
using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves
G
PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
21
by interference
225
in an optical waveguide structure
[IPC code unknown for ERROR IPC Code incorrect: invalid section (A=>H)!]
Applicants:
LEICA GEOSYSTEMS AG
[CH/CH]; Heinrich-Wild-Strasse CH-9435 Heerbrugg (CH)
Inventors:
PORTE, Henri
; (FR).
MOTTET, Alexandre
; (FR).
LÜTHI, Thomas
; (CH).
BÖCKEM, Burkhard
; (CH)
Agent:
FREI PATENTANWALTSBURÖ AG
; Postfach 1771 CH-8032 Zürich (CH)
Priority Data:
12405037.8
16.04.2012
EP
Title
(EN)
ELECTRO-OPTIC MODULATOR AND ELECTRO-OPTIC DISTANCE-MEASURING DEVICE
(FR)
MODULATEUR ÉLECTRO-OPTIQUE ET DISPOSITIF DE MESURE DE DISTANCE ÉLECTRO-OPTIQUE
Abstract:
(EN)
An electro-optic modulator comprises a waveguide (2) of a nonlinear optical material and an electrode line (3) for generating an electrical field in a modulating region (17) of the waveguide (2) when a voltage is applied to the electrode line (3). thereby modulating light passing through the waveguide (2). Therein ▪ the forward electro-optic response of the modulating region (17) is the same as the backward electro-optic response; and ▪ the electro-optic response has a band-pass or a low-pass characteristic. A distance measuring device comprises a light source (101) emitting light, and such an electro-optic modulator arranged such that the emitted Light passes through the electro-optic modulator in a first direction before being emitted from the distance measuring device, and after being reflected from a target passes through the electro-optic modulator in a second direction which is opposite to the first direction.
(FR)
La présente invention porte sur un modulateur électro-optique qui comprend un guide d'onde (2) d'une matière optique non linéaire et une ligne d'électrode (3) pour générer un champ électrique dans une région de modulation (17) du guide d'onde (2) lorsqu'une tension est appliquée à la ligne d'électrode (3), modulant ainsi une lumière traversant le guide d'onde (2). Dans celui-ci, la réponse électro-optique vers l'avant de la région de modulation (17) est identique à la réponse électro-optique vers l'arrière; et la réponse électro-optique a une caractéristique passe-bande et une caractéristique passe-bas. La présente invention porte également sur un dispositif de mesure de distance qui comprend une source lumineuse (101) émettant une lumière, et un tel modulateur électro-optique agencé de telle sorte que la lumière émise traverse le modulateur électro-optique dans une première direction avant d'être émise depuis le dispositif de mesure de distance, et après être réfléchie depuis une cible, traverse le modulateur électro-optique dans une seconde direction qui est opposée à la première direction.
Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)