US4094583A
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Acoustooptic device
Assignee: NEC Corp
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Filing: 1976-06-30
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Granted: 1978-06-13
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Expires: 1996-06-30
Abstract
Abstract An acoustooptic device using a single crystal as its acoustooptic medium consisting essentially of lead monoxide (PbO) and niobium pentoxide (Nb 2 O 5 ) in the composition ratio x by mol as 1.5 ≦ x ≦ 3.1 for PbO · x Nb 2 O 5 .
Inventors
- 👤 Yojiro Kondo
- 👤 Yoshinori Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:53
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/0009
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
37 words
In an acoustooptic device, an acoustooptic medium consisting essentially of a single crystal of PbO·xNb 2 O 5 in which the mol composition of Nb 2 O 5 in said crystal is 1.5 ≦ x ≦ 3.1.
Claim 2
Dependent Claim
37 words
In an acoustooptic device, an acoustooptic medium consisting essentially of a single crystal of PbO·xNb 2 O 5 in which the mol composition of Nb 2 O 5 in said crystal is 1.5 ≦ x ≦ 3.1.
Claim 3
Dependent Claim
63 words
The acoustooptic device as in claim 1, wherein said single crystal is characterized by crystallographic axes a, b and c, wherein said crystal is in the form of a parallelepiped with the planes thereof disposed along said axes, and wherein said crystal has a sound wave oscillating means and a sound absorber, respectively, disposed opposite each other on opposite planes of said parallelepiped.
Claim 4
Dependent Claim
19 words
The acoustooptic device as in claim 2, wherein said sound wave oscillating means is a piezoelectric longitudinal wave transducer.
Claim 5
Dependent Claim
19 words
The acoustooptic device as in claim 2, wherein said sound wave oscillating means is a piezoelectric shear wave transducer.
Claim 6
Dependent Claim
50 words
The acoustooptic device as in claim 1, wherein said acoustooptic single crystal is in the form of a thin film plate integrally attached to a substrate, thereby forming a light waveguide, and wherein said thin film plate has coupled to the top surface thereof an elastic surface wave oscillating means.
Claim 7
Dependent Claim
19 words
The acoustic device as in claim 5, wherein said elastic surface oscillating means is a vapor deposited interdigital electrode.
Claim 8
Dependent Claim
25 words
The acoustooptic device as in claim 5, wherein said substrate is a glass plate having a refractive index smaller than that of the single crystal.
Claim 9
Dependent Claim
57 words
An acoustooptic device comprising an acoustooptic medium consisting essentially of a single crystal of PbO·xNb 2 O 5 (1.5≦x≦3.1) having crystallographic axes a, b and c, means for propagating a longitudinal sound wave along axis c or a of said single crystal and means for transmitting a linearly polarized light beam along the axis b or a.
Claim 10
Dependent Claim
57 words
An acoustooptic device comprising an acoustooptic medium consisting essentially of a single crystal of PbO·xNb 2 O 5 (1.5≦x≦3.1) having crystallographic axes a, b and c, means for propagating a longitudinal sound wave along axis c or a of said single crystal and means for transmitting a linearly polarized light beam along the axis b or a.
Claim 11
Dependent Claim
47 words
The acoustooptic device as in claim 8, wherein said crystal is in the form of a parallelpiped with the planes thereof disposed along said axes and wherein said crystal has a longitudinal sound wave oscillating means and a sound absorber, respectively, disposed opposite planes of said parallelpiped.
Claim 12
Dependent Claim
20 words
The acoustooptic device as in claim 9, wherein said longitudinal sound wave oscillating means is a piezoelectric longitudinal wave transducer.
Claim 13
Dependent Claim
74 words
In an acoustooptic device, an acoustooptic medium consisting essentially of a single crystal of PbO· x Nb 2 O 5 (1.5≦x<2.1) having crystallographic axes a, b and c, means for propagating a sound shear wave displaced along the axis a or c along the axis c or a and means for transmitting a linearly polarized light beam oscillated in the direction of axis a or c along the axis b of said single crystal.
Claim 14
Dependent Claim
74 words
In an acoustooptic device, an acoustooptic medium consisting essentially of a single crystal of PbO· x Nb 2 O 5 (1.5≦x<2.1) having crystallographic axes a, b and c, means for propagating a sound shear wave displaced along the axis a or c along the axis c or a and means for transmitting a linearly polarized light beam oscillated in the direction of axis a or c along the axis b of said single crystal.
Claim 15
Dependent Claim
77 words
In an acoustooptic device, an acoustooptic medium consisting essentially of a single crystal of PbO·xNb 2 O 5 (2.1≦x≦3.1) having crystallographic axes a, b and c, and including means for propagating a sound shear wave displaced along the axis b or a along the axis a or b of said single crystal and means for transmitting a linearly polarized light beam oscillated in the direction of axis a or b along the axis of said single crystal.
Claim 16
Dependent Claim
77 words
In an acoustooptic device, an acoustooptic medium consisting essentially of a single crystal of PbO·xNb 2 O 5 (2.1≦x≦3.1) having crystallographic axes a, b and c, and including means for propagating a sound shear wave displaced along the axis b or a along the axis a or b of said single crystal and means for transmitting a linearly polarized light beam oscillated in the direction of axis a or b along the axis of said single crystal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |