US5737133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Module for optical fiber receptacle used in a scanning device
Assignee: Ricoh Printing Systems Ltd
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Filing: 1996-08-01
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Granted: 1998-04-07
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Expires: 2016-08-01
Abstract
Abstract A module for an optical fiber receptacle used in an optical scanning device forming a latent image on a photosensitive body by scanning a laser beam emitted from the optical fiber, the efficiency of light use is improved. The module includes a module holder having a semiconductor laser for generating a laser beam, a lens for condensing the laser beam emitted from the semiconductor laser and a lens holder for holding the lens; a flat glass plate arranged on the optical path of the laser beam and fixed in the module holder; an optical fiber fixed onto a surface of the flat glass plate opposite to the surface facing the semiconductor laser through a photo-curing resin. The flat glass plate, the photo-curing resin and the optical fiber are made of materials having approximately equal refractive indexes.
Inventors
- 👤 Masazumi Ouchi
- 👤 Yasuyuki Shibayama
- 👤 Keiji Kataoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:51
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4249; G02B6/4204; G02B6/36; G02B6/3628; G02B6/3632; G02B6/3644; G02B6/4207; G02B6/4219; G02B6/4236; G02B6/4237; G02B6/4239
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A module for an optical fiber receptacle used in a scanning device, which comprises: a module holder having a semiconductor laser for generating a laser beam, a lens for condensing the laser beam emitted from the semiconductor laser and a lens holder for holding the lens; a flat glass plate arranged on the optical path of said laser beam and fixed in said module holder; and an optical fiber fixed onto a surface of said flat glass plate opposite to the surface facing the semiconductor laser using a photo-curing resin; said flat glass plate, said photo-curing resin and said optical fiber being made of materials having approximately equal refractive indexes.
Claim 2
Dependent Claim
110 words
A module for an optical fiber receptacle used in a scanning device, which comprises: a module holder having a semiconductor laser for generating a laser beam, a lens for condensing the laser beam emitted from the semiconductor laser and a lens holder for holding the lens; a flat glass plate arranged on the optical path of said laser beam and fixed in said module holder; and an optical fiber fixed onto a surface of said flat glass plate opposite to the surface facing the semiconductor laser using a photo-curing resin; said flat glass plate, said photo-curing resin and said optical fiber being made of materials having approximately equal refractive indexes.
Claim 3
Dependent Claim
24 words
A module according to claim 1, wherein said flat glass plate has a non-reflection coating at least on the surface facing said semiconductor laser.
Claim 4
Dependent Claim
27 words
A module according to claim 1, wherein a light irradiation opening for setting said photo-curing resin is provided between said lens holder and said flat glass plate.
Claim 5
Dependent Claim
59 words
A module according to claim 1, wherein the thickness (T G ) of said flat glass plate satisfies the relationship T.sub.G >π·d.sup.2 ·n/4λ, wherein d is a beam diameter in the core of the optical fiber, n is the refractive index of a region transmitting the light entering into the optical fiber, and λ the wavelength of the light.
Claim 6
Dependent Claim
47 words
A module according to claim 1, wherein a ferrule and a ferrule holder for supporting the outer periphery of said ferrule are provided at an end of a fixed side of said optical fiber, said end of said optical fiber being fixed to said flat glass plate.
Claim 7
Dependent Claim
46 words
A module according to any one of claim 1 to claim 4, wherein said flat glass plate and said optical fiber are made of quartz glass, said photo-curing resin being any one of acrylic resin and epoxy resin having a refractive index of 1.45 to 1.57.
References Cited (Backward Citations)
US5542018A
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US5274723A
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US5333224A
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US5388171A
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US5533159A
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US5537504A
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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) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |