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US5235457A Expired / Lapsed US ⏱️ 0.0 years remaining

Kit for converting a standard microscope into a single aperture confocal scanning epi-illumination microscope

Assignee: Washington University in St. Louis
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Filing: 1990-11-30
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Granted: 1993-08-10
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Expires: 2010-11-30
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Abstract

Abstract A kit to convert a standard epi-illumination microscope into a single aperture confocal scanning epi-illumination microscope comprises an assembly including, in one embodiment, a pair of intermediate lenses to create a second field plane conjugate to the specimen plane in both the incident and reflected light paths, with a single aperture positioned at this second conjugate field plane and controllably scanned through the plane to create the incident light beam as well as to mask the returning light before viewing. In a second embodiment, only a single lens is included in the assembly and the objective lens may be positioned at its correct tube length, or a non-standard objective lens may be used to prevent undesired degradation of the image. This assembly conveniently mounts to the nosepiece of the standard microscope in place of the objective lens, and the objective lens mounts to the assembly.

Inventors

  • 👤 Jeffrey W. Lichtman
  • 👤 William J. Sunderland

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 19:55
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/002; G02B21/0024; G02B21/008; G02B21/0084; G02B21/0028; G02B21/0032; G02B21/0036; G02B21/0044; G02B21/06; G02B21/08; G02B21/082

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 49 words
A kit for converting a standard optical imaging microscope for viewing a specimen into a confocal scanning microscope, said standard microscope having a detachable primary objective lens, and said kit having means for attaching said kit within said standard microscope adjacent and optically precedent to said primary objective lens.
Claim 2
Dependent Claim 49 words
A kit for converting a standard optical imaging microscope for viewing a specimen into a confocal scanning microscope, said standard microscope having a detachable primary objective lens, and said kit having means for attaching said kit within said standard microscope adjacent and optically precedent to said primary objective lens.
Claim 3
Dependent Claim 26 words
The kit of claim 1 wherein said kit includes a scanning aperture having at least one set of holes of masking light which traverses the kit.
Claim 4
Dependent Claim 36 words
The kit of claim 1 wherein said kit includes a set of lenses for creating a field plane in at least a light path for returning light conjugate to a plane whereat the specimen is positioned.
Claim 5
Dependent Claim 18 words
The kit of claim 3 wherein said kit includes a scanning aperture positioned at said conjugate field plane.

References Cited (Backward Citations)

US3664751A Cited
US3926500A Cited
US4062623A Cited
US4215934A Cited
US4323299A Cited
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US4634880A Cited
US4744642A Cited
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US5065008A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-08-09 1997-02-08 1997-08-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-08-09 2001-02-08 2001-08-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-08-09 2005-02-08 2005-08-10 $7700.00 Window Closed / Lapsed

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