US3718400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror drum optical system for use in microscopic spectrophotometer
Assignee: Olympus Corp
•
Filing: 1972-02-07
•
Granted: 1973-02-27
•
Expires: 1992-02-07
Abstract
Abstract A mirror drum optical system for use in a microscopic spectrophotometer has a system of a lens and mirrors adapted to be inserted into and retracted from the optical path. A camera is arranged to photograph the specimen and the centering of the pinholes and reflex viewing system and photoindicator permit sequential observation and measurement by an observer.
Inventors
- 👤 K Yonekubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:34
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
365 words
A mirror drum optical system for use in a microscopic spetrophotometer comprising a photometric light source apparatus including a primary pinhole, a light source apparatus including a ring iris and illuminating the phase contrast, a specimen, a semi-transparent prism adapted to illuminate said specimen located on the same optical axis from said two light source apparatus, an objective and light receiver located on said optical axis, a first reflecting mirror adapted to be inserted into and retracted from said optical axis, a secondary pinhole, a first relay lens and a second reflecting mirror adapted to be inserted into and retracted from said optical axis, said mirrors and lens being arranged on said optical axis between said objective and light receiver, a phase plate, a second relay lens and eyepiece arranged in sequence on the optical axis bent by said first reflecting mirror, a phase plate projecting lens arranged between said objective and said phase plate, a third relay lens located on the optical axis bent by said second reflecting mirror, a third reflecting mirror adapted to be inserted into and retracted from the optical path or a stationary semi-transparent mirror for bending said optical axis including said third relay lens towards a direction extending in parallel with said optical axis from said objective to said light receiver and perpendicular to said optical axis bent by said first reflecting mirror, said optical axis bent by said third reflecting mirror or semi-transparent mirror being perpendicular to and crossed with said optical axis bent by said first reflecting mirror at the intermediate between said second relay lens and said eyepiece, a fourth reflecting mirror located at said crossed position and adapted to be inserted into and retracted from the optical path and to bend said optical axis bent by said first reflecting mirror towards said third reflecting mirror, a fifth reflecting mirror located at said crossed position and adapted to be inserted into and retracted from the optical path and to bend said optical axis bent by said third reflecting mirror or semi-transparent mirror towards said eyepiece, and a photographic eyepiece located on said optical axis bent by said fourth reflecting mirror and leading to a photographic film.
Claim 2
Dependent Claim
365 words
A mirror drum optical system for use in a microscopic spetrophotometer comprising a photometric light source apparatus including a primary pinhole, a light source apparatus including a ring iris and illuminating the phase contrast, a specimen, a semi-transparent prism adapted to illuminate said specimen located on the same optical axis from said two light source apparatus, an objective and light receiver located on said optical axis, a first reflecting mirror adapted to be inserted into and retracted from said optical axis, a secondary pinhole, a first relay lens and a second reflecting mirror adapted to be inserted into and retracted from said optical axis, said mirrors and lens being arranged on said optical axis between said objective and light receiver, a phase plate, a second relay lens and eyepiece arranged in sequence on the optical axis bent by said first reflecting mirror, a phase plate projecting lens arranged between said objective and said phase plate, a third relay lens located on the optical axis bent by said second reflecting mirror, a third reflecting mirror adapted to be inserted into and retracted from the optical path or a stationary semi-transparent mirror for bending said optical axis including said third relay lens towards a direction extending in parallel with said optical axis from said objective to said light receiver and perpendicular to said optical axis bent by said first reflecting mirror, said optical axis bent by said third reflecting mirror or semi-transparent mirror being perpendicular to and crossed with said optical axis bent by said first reflecting mirror at the intermediate between said second relay lens and said eyepiece, a fourth reflecting mirror located at said crossed position and adapted to be inserted into and retracted from the optical path and to bend said optical axis bent by said first reflecting mirror towards said third reflecting mirror, a fifth reflecting mirror located at said crossed position and adapted to be inserted into and retracted from the optical path and to bend said optical axis bent by said third reflecting mirror or semi-transparent mirror towards said eyepiece, and a photographic eyepiece located on said optical axis bent by said fourth reflecting mirror and leading to a photographic film.
References Cited (Backward Citations)
US3205767A
Cited
US3527536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |