US3762794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable beam refocuser and redirector
Assignee: AT&T Inc
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Filing: 1972-04-06
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Granted: 1973-10-02
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Expires: 1992-04-06
Abstract
Abstract Optical beam refocusing and redirecting are realized using two identical cylindrical mirrors arranged in a periscopic configuration. The focal length of the system and the deflection angle can be made continuously and independently variable by relating the parameters of the system in a specified manner.
Inventors
- 👤 J Arnaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/02; G02B17/06; G02B17/0668; G02B19/00; G02B19/0004; G02B19/0019; G02B19/0023; G02B19/0033
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
An optical beam transmission system including: two spaced sections of beam waveguide having an arbitrary angular orientation relative to each other within the range of angles between zero and 180*; and means for focusing and redirecting an optical beam received from one of said sections for transmission along the other of said sections comprising: a pair of identical mirrors, each having a concave cylindrical reflecting surface, arranged in a periscopic configuration; means for rotating one of said mirrors about a first axis that is normal to the incidence plane of said beam at said first mirror; means for rotating the other of said mirrors about a second axis that is normal to the incidence plane of said beam at said other mirror; means for rotating said first and second axes relative to each other; means for rotating said one mirror about a third axis that is normal to the surface of said one mirror; and means for rotating said other mirror about a fourth axis that is normal to the surface of said other mirror.
Claim 2
Dependent Claim
175 words
An optical beam transmission system including: two spaced sections of beam waveguide having an arbitrary angular orientation relative to each other within the range of angles between zero and 180*; and means for focusing and redirecting an optical beam received from one of said sections for transmission along the other of said sections comprising: a pair of identical mirrors, each having a concave cylindrical reflecting surface, arranged in a periscopic configuration; means for rotating one of said mirrors about a first axis that is normal to the incidence plane of said beam at said first mirror; means for rotating the other of said mirrors about a second axis that is normal to the incidence plane of said beam at said other mirror; means for rotating said first and second axes relative to each other; means for rotating said one mirror about a third axis that is normal to the surface of said one mirror; and means for rotating said other mirror about a fourth axis that is normal to the surface of said other mirror.
Claim 3
Dependent Claim
162 words
An optical beam redirector-refocuser comprising: a pair of identical mirrors, each having a concave cylindrical reflecting surface of radius of curvature R, arranged in a periscopic configuration, the parameters of said system being related by f (R/2) (cos i1sin2 Nu 1+(cos2 Nu 1/cos i1)) 1 (R/2) (cos i2 sin2 Nu 2 + (cos2 Nu 2/cos i2)) 1; Omega tan 1(tan Nu 1 cos i1) + tan 1(tan Nu 2 cos i2) + or - pi /2; and cos theta cos 2i1 cos 2i2 - cos Omega sin 2i1 sin 2i2; where i1 and i2 are the angles of incidence of the beam at sAid mirrors; Nu 1 and Nu 2 are the angles between the normals to the incidence planes and the mirror generatrices, where at least one of said angles is greater than zero; Omega is the angle between the normals to the incidence planes; f is the focal length of the combined mirrors; and theta is the total beam deflection.
Claim 4
Dependent Claim
162 words
An optical beam redirector-refocuser comprising: a pair of identical mirrors, each having a concave cylindrical reflecting surface of radius of curvature R, arranged in a periscopic configuration, the parameters of said system being related by f (R/2) (cos i1sin2 Nu 1+(cos2 Nu 1/cos i1)) 1 (R/2) (cos i2 sin2 Nu 2 + (cos2 Nu 2/cos i2)) 1; Omega tan 1(tan Nu 1 cos i1) + tan 1(tan Nu 2 cos i2) + or - pi /2; and cos theta cos 2i1 cos 2i2 - cos Omega sin 2i1 sin 2i2; where i1 and i2 are the angles of incidence of the beam at sAid mirrors; Nu 1 and Nu 2 are the angles between the normals to the incidence planes and the mirror generatrices, where at least one of said angles is greater than zero; Omega is the angle between the normals to the incidence planes; f is the focal length of the combined mirrors; and theta is the total beam deflection.
Claim 5
Dependent Claim
170 words
An optical beam transmission system including: two spaced sections of beam waveguide whose longitudinal axes are oriented relative to each other at some arbitrary angle between zero and 180*; and means for focusing and redirecting an optical beam received from one of said sections for transmission along the other of said sections comprising: a pair of identical mirrors, each having a concave cylindrical reflecting surface, arranged in a periscopic configuration; means for rotating one of said mirrors about a first axis that is perpendicular to the axis of one of said waveguides; means for rotating the other of said mirrors about a second axis that is perpendicular to the longitudinal axis of the other of said waveguides; means for rotating said first and second axes relative to each other; means for rotating said one mirror about a third axis that is normal to the surface of said one mirror; and means for rotating said other mirror about a fourth axis that is normal to the surface of said other mirror.
Claim 6
Dependent Claim
170 words
An optical beam transmission system including: two spaced sections of beam waveguide whose longitudinal axes are oriented relative to each other at some arbitrary angle between zero and 180*; and means for focusing and redirecting an optical beam received from one of said sections for transmission along the other of said sections comprising: a pair of identical mirrors, each having a concave cylindrical reflecting surface, arranged in a periscopic configuration; means for rotating one of said mirrors about a first axis that is perpendicular to the axis of one of said waveguides; means for rotating the other of said mirrors about a second axis that is perpendicular to the longitudinal axis of the other of said waveguides; means for rotating said first and second axes relative to each other; means for rotating said one mirror about a third axis that is normal to the surface of said one mirror; and means for rotating said other mirror about a fourth axis that is normal to the surface of said other mirror.
Claim 7
Dependent Claim
22 words
The redirector-refocuser according to claim 2 including means for rotating said mirrors relative to each other and relative to said optical beam.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |