US4995694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber optical beam splitting device
Assignee: LFK-Lenkflugkörpersysteme GmbH
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Filing: 1990-03-16
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Granted: 1991-02-26
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Expires: 2010-03-16
Abstract
Abstract A fiber-optical beam splitting device is disclosed which has a prismatically constructed front face and is used for the coupling-in and coupling-out of light into or from an optical fiber from or into different directions fo the environment of the optical fiber.
Inventors
- 👤 Robert Rieger
- 👤 Bodo Tilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:45
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4246; G02B6/26; G02B6/28; G02B6/2804; G02B6/2817
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A fiber-optical beam splitting device for the coupling in or out of light into or out of an optical fiber from or into different directions of the environment of the optical fiber, wherein at least one front face of the optical fiber is constructed in the shape of a prism, the angle Y between the longitudinal axis of the fiber and a surface of the prism following the condition ##EQU10## wherein n 1 =the refraction index of the fiber core, n 2 =the refraction index of the fiber cladding, n 3 =the refraction index of the medium surrounding the optical fiber.
Claim 2
Dependent Claim
101 words
A fiber-optical beam splitting device for the coupling in or out of light into or out of an optical fiber from or into different directions of the environment of the optical fiber, wherein at least one front face of the optical fiber is constructed in the shape of a prism, the angle Y between the longitudinal axis of the fiber and a surface of the prism following the condition ##EQU10## wherein n 1 =the refraction index of the fiber core, n 2 =the refraction index of the fiber cladding, n 3 =the refraction index of the medium surrounding the optical fiber.
Claim 3
Dependent Claim
17 words
A fiber-optical beam splitting device according to claim 1, wherein the angle γ meets the condition ##EQU11##
Claim 4
Dependent Claim
58 words
A beam splitting device according to claim 1, wherein the front face of the optical fiber is constructed in the form of a ridge prism, the normal surface line (N) of the ridge prism surfaces and the longitudinal axis of the fiber being coplanar, and the angles γ of the individual surfaces of the ridge prism being identical.
Claim 5
Dependent Claim
59 words
A fiber-optical beam splitting device according to claim 2, wherein the front face of the optical fiber is constructed in the form of a ridge prism, the normal surface line (N) of the ridge prism surfaces and the longitudinal axis of the fiber being coplanar, and the angles γ of the individual surfaces of the ridge prism being identical.
Claim 6
Dependent Claim
34 words
A fiber-optical coupler having a beam splitting device according to claim 1, wherein the front face of an optical fiber is, in each case, arranged in the beaming directions of the beam splitting device.
Claim 7
Dependent Claim
59 words
A fiber-optical beam splitting device according to claim 2, wherein the front face of the optical fiber is constructed in the form of a ridge prism, the normal surface line (N) of the ridge prism surfaces and the longitudinal axis of the fiber being coplanar, and the angles γ of the individual surfaces of the ridge prism being identical.
Claim 8
Dependent Claim
62 words
A fiber-optical coupler having a beam splitting device according to claim 3, wherein the front face of the optical fiber is constructed in the form of a ridge prism, the normal surface line (N) of the ridge prism surfaces and the longitudinal axis of the fiber being coplanar, and the angles γ of the individual surfaces of the ridge prism being identical.
Claim 9
Dependent Claim
122 words
An optoelectrical transmitting and receiving device for the coupling in or out of light into or out of an optical fiber from or into different directions of the environment of the optical fiber, wherein at least one front face of the optical fiber is constructed in the shape of a prism, the angle γ between the longitudinal axis of the fiber and a surface of the prism following the condition ##EQU12## wherein n 1 =the refraction index of the fiber core, n 2 =the refraction index of the fiber sheath, n 3 =the refraction index of the medium surrounding the optical fiber, and wherein a light-emitting diode or a photo diode is arranged in at least one beaming direction of the prism.
Claim 10
Dependent Claim
122 words
An optoelectrical transmitting and receiving device for the coupling in or out of light into or out of an optical fiber from or into different directions of the environment of the optical fiber, wherein at least one front face of the optical fiber is constructed in the shape of a prism, the angle γ between the longitudinal axis of the fiber and a surface of the prism following the condition ##EQU12## wherein n 1 =the refraction index of the fiber core, n 2 =the refraction index of the fiber sheath, n 3 =the refraction index of the medium surrounding the optical fiber, and wherein a light-emitting diode or a photo diode is arranged in at least one beaming direction of the prism.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |