Patent US5402269A successfully refreshed from Google Patents.
US5402269A
Expired / Lapsed
US
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Compound prism
Assignee: Pentax Corp
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Filing: 1993-02-26
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Granted: 1995-03-28
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Expires: 2013-02-26
Abstract
Abstract A compound prism including a plurality of unit prisms which have reflective interfaces defined by outer and/or inner surfaces thereof and which are arranged so that light is reflected by an inner surface of the interface of one of the unit prisms and by an outer surface of the interface of another unit prism.
Inventors
- 👤 Masahiro Oono
- 👤 Koichi Maruyama
- 👤 Masato Noguchi
- 👤 Makoto Iki
- 👤 Hitoshi Kimura
- 👤 Masahiko Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:12
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/12; G11B7/135; G11B7/1356; G02; G02B; G02B27/00; G02B27/10; G02B27/14; G02B27/144; G02B27/145; G02B27/28; G02B27/283; G11B11/00; G11B11/10; G11B11/105; G11B11/10532; G11B11/10541; G11B11/10543
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
64 words
A reflecting device comprising at least one mirror body having a reflecting surface, and at least one prism body having interfaces, said mirror body reflecting surface and said prism body interfaces including a convexity or concavity of the order of a laser wavelength, wherein a light beam, reflected by said mirror body reflecting surface, is reflected by an interface of said prism body interfaces.
Claim 2
Dependent Claim
64 words
A reflecting device comprising at least one mirror body having a reflecting surface, and at least one prism body having interfaces, said mirror body reflecting surface and said prism body interfaces including a convexity or concavity of the order of a laser wavelength, wherein a light beam, reflected by said mirror body reflecting surface, is reflected by an interface of said prism body interfaces.
Claim 3
Dependent Claim
34 words
A reflecting device according to claim 1, wherein said reflecting surface of said mirror body and said interfaces of said prism body are polished in a single polishing operation by the same polishing machine.
Claim 4
Dependent Claim
14 words
A reflecting device according to claim 1, said prism body interfaces comprising semitransparent films.
Claim 5
Dependent Claim
40 words
A reflecting device according to claim 3, wherein said mirror body reflecting surface is connected to said at least one prism body by an adhesive having a refractive index substantially identical to that of said at least one prism body.
Claim 6
Dependent Claim
39 words
A reflecting device according to claim 4, wherein said mirror body reflecting surface and said prism body interfaces are positioned such that a number of reflections by a concavity are equal to the number of reflections by a convexity.
Claim 7
Dependent Claim
48 words
A reflecting device according to claim 3, wherein a light beam is internally reflected at an interface of one of said at least one prism body and externally reflected at an interface of other prism bodies or mirror bodies located in a medium having a different refractive index.
Claim 8
Dependent Claim
44 words
A reflecting device according to claim 6, wherein said prisms and said mirrors are positioned so that the number of reflections in the medium having a smaller refractive index is greater than the number of reflections in the medium having a higher refractive index.
Claim 9
Dependent Claim
50 words
A reflecting device according to claim 1, wherein the light beam, reflected by said mirror body reflecting surface, is partially reflected by one of said prism body interfaces to produce a control light beam and partially reflected by another of said prism body interfaces to produce another control light beam.
Claim 10
Dependent Claim
31 words
A reflecting device according to claim 1, wherein said light beam passes through a prism body interface closest to said mirror body surface, and is reflected by another prism body interface.
Claim 11
Dependent Claim
41 words
A reflecting device according to claim 1, one interface, of said prism body interfaces, comprises means for receiving an incident light beam, and another interface, of said prism body interfaces, comprises means for emitting a light beam from said prism body.
Claim 12
Dependent Claim
16 words
A reflecting device according to claim 1, wherein the light beam is a polarized light beam.
Claim 13
Dependent Claim
26 words
A reflecting device according to claim 1, wherein said reflecting surface of said mirror body and said interfaces of said prism body have convexity or concavity.
Claim 14
Dependent Claim
74 words
A reflecting device comprising at least one mirror body having a reflecting surface, and at least one prism body having interfaces, said mirror body reflecting surface and said prism body interfaces including a convexity or concavity of the order of a laser wavelength, wherein a light beam, reflected by said mirror body reflecting surface, passes through a prism body interface closest to said mirror body surface, and is reflected by another prism body interface.
Claim 15
Dependent Claim
74 words
A reflecting device comprising at least one mirror body having a reflecting surface, and at least one prism body having interfaces, said mirror body reflecting surface and said prism body interfaces including a convexity or concavity of the order of a laser wavelength, wherein a light beam, reflected by said mirror body reflecting surface, passes through a prism body interface closest to said mirror body surface, and is reflected by another prism body interface.
Claim 16
Dependent Claim
32 words
A reflecting device according to claim 13, wherein said reflecting surfaces of said mirror body and said prism body are both polished in a single polishing operation by the same polishing machine.
Claim 17
Dependent Claim
14 words
A reflecting device according to claim 13, said prism body interfaces comprising semitransparent films.
Claim 18
Dependent Claim
40 words
A reflecting device according to claim 15, wherein said mirror body reflecting surface is connected to said at least one prism body by an adhesive having a refractive index substantially identical to that of said at least one prism body.
Claim 19
Dependent Claim
39 words
A reflecting device according to claim 16, wherein said mirror body reflecting surface and said prism body interfaces are positioned such that a number of reflections by a concavity are equal to the number of reflections by a convexity.
Claim 20
Dependent Claim
48 words
A reflecting device according to claim 15, wherein a light beam is internally reflected at an interface of one of said at least one prism body and externally reflected at an interface of other prism bodies or mirror bodies located in a medium having a different refractive index.
Claim 21
Dependent Claim
44 words
A reflecting device according to claim 18, wherein said prisms and said mirrors are positioned so that the number of reflections in the medium having a smaller refractive index is greater than the number of reflections in the medium having a higher refractive index.
Claim 22
Dependent Claim
51 words
A reflecting device according to claim 13, wherein the light beam, reflected by said mirror body reflecting surface, is then partially reflected by one of said prism body interfaces to produce a control light beam and partially reflected by another of said prism body interfaces to produce another control light beam.
Claim 23
Dependent Claim
41 words
A reflecting device according to claim 13, one interface, of said prism body interfaces, comprises means for receiving an incident light beam, and another interface, of said prism body interfaces, comprises means for emitting a light beam from said prism body.
Claim 24
Dependent Claim
16 words
A reflecting device according to claim 13, wherein the light beam is a polarized light beam.
Claim 25
Dependent Claim
26 words
A reflecting device according to claim 13, wherein said reflecting surface of said mirror body and said interfaces of said prism body have convexity or concavity.
Claim 26
Dependent Claim
117 words
A reflecting device comprising at least one mirror body having a reflecting surface, and at least one prism body having interfaces, said mirror body reflecting surface and said prism body interfaces including a convexity or concavity of the order of a laser wavelength, wherein a light beam, reflected by said mirror body reflecting surface, passes through a prism body interface closest to said mirror body surface, and is reflected by another prism body interface, wherein one interface, of said prism body interfaces, comprises means for receiving an incident light beam, and another interface, of said prism body interfaces, comprises means for emitting a light beam from said prism body, said light beam being a polarized light beam.
Claim 27
Dependent Claim
117 words
A reflecting device comprising at least one mirror body having a reflecting surface, and at least one prism body having interfaces, said mirror body reflecting surface and said prism body interfaces including a convexity or concavity of the order of a laser wavelength, wherein a light beam, reflected by said mirror body reflecting surface, passes through a prism body interface closest to said mirror body surface, and is reflected by another prism body interface, wherein one interface, of said prism body interfaces, comprises means for receiving an incident light beam, and another interface, of said prism body interfaces, comprises means for emitting a light beam from said prism body, said light beam being a polarized light beam.
Claim 28
Dependent Claim
32 words
A reflecting device according to claim 24, wherein said reflecting surfaces of said mirror body and said prism body are both polished in a single polishing operation by the same polishing machine.
Claim 29
Dependent Claim
14 words
A reflecting device according to claim 24, said prism body interfaces comprising semitransparent films.
Claim 30
Dependent Claim
40 words
A reflecting device according to claim 26, wherein said mirror body reflecting surface is connected to said at least one prism body by an adhesive having a refractive index substantially identical to that of said at least one prism body.
Claim 31
Dependent Claim
39 words
A reflecting device according to claim 27, wherein said mirror body reflecting surface and said prism body interfaces are positioned such that a number of reflections by a concavity are equal to the number of reflections by a convexity.
Claim 32
Dependent Claim
48 words
A reflecting device according to claim 26, wherein a light beam is internally reflected at an interface of one of said at least one prism body and externally reflected at an interface of other prism bodies or mirror bodies located in a medium having a different refractive index.
Claim 33
Dependent Claim
44 words
A reflecting device according to claim 29, wherein said prisms and said mirrors are positioned so that the number of reflections in the medium having a smaller refractive index is greater than the number of reflections in the medium having a higher refractive index.
Claim 34
Dependent Claim
51 words
A reflecting device according to claim 24, wherein the light beam, reflected by said mirror body reflecting surface, is then partially reflected by one of said prism body interfaces to produce a control light beam and partially reflected by another of said prism body interfaces to produce another control light beam.
Claim 35
Dependent Claim
26 words
A reflecting device according to claim 24, wherein said reflecting surface of said mirror body and said interfaces of said prism body have convexity or concavity.
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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) | 1998-03-27 | 1998-09-26 | 1999-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-27 | 2002-09-26 | 2003-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-27 | 2006-09-26 | 2007-03-28 | $7700.00 | Window Closed / Lapsed |