US4922104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared microspectrometer
Assignee: Hitachi Ltd
•
Filing: 1988-11-30
•
Granted: 1990-05-01
•
Expires: 2008-11-30
Abstract
Abstract An infrared spectrum measuring microscope apparatus which is suitable for accurately identifying the material at a microfine portion. A sample stage is vertically moved and special optical means are provided in the sample stage for enabling high-sensitivity spectral measurement of a microfine portion of samples of various sizes. The infrared microspectometer of the present invention also enables the chemical species of the sample to be identified by the fluorescence spectrum in addition to the information of the infrared spectrum.
Inventors
- 👤 Kinya Eguchi
- 👤 Kikue Niitsuma
- 👤 Shigeru Wakena
- 👤 Masayoshi Ezawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:32
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G02; G02B; G02B21/00; G02B21/0004; G02B21/24; G01J; G01J3/00; G01J3/28; G01J3/42; G01J2003/425; G01N2021/1738; G01N2021/1742; G01N2021/3595; G01N21/62; G01N21/63; G01N21/64; G01N2021/6417; G01N21/3563; G01N21/645; G01N21/6456; G01N21/6458
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
An infrared microspectrometer for spectral measurement in a transmission or reflection mode comprising: a spectrophotometer; a microscope; a detector; and a vertically movable sample stage having a first optical means for converting analyzing rays into parallel rays between the light source of said spectrophotometer and said sample stage and a second optical means for receiving said rays from said first optical means and projecting said rays to a sample.
Claim 2
Dependent Claim
69 words
An infrared microspectrometer for spectral measurement in a transmission or reflection mode comprising: a spectrophotometer; a microscope; a detector; and a vertically movable sample stage having a first optical means for converting analyzing rays into parallel rays between the light source of said spectrophotometer and said sample stage and a second optical means for receiving said rays from said first optical means and projecting said rays to a sample.
Claim 3
Dependent Claim
25 words
An infrared microspectrometer according to claim 1, wherein each of said first optical means and said second optical means is composed of a parabolic mirror.
Claim 4
Dependent Claim
22 words
An infrared microspectrometer according to claim 1, wherein said second optical means is composed of a parabolic mirror and an ellipsoidal mirror.
Claim 5
Dependent Claim
43 words
An infrared microspectrometer for spectral measurement in a transmission mode according to claim 3, wherein said second optical means is composed of a parabolic mirror, an ellipsoidal mirror and at least two flat mirrors provided between said parabolic mirror and said ellipsoidal mirror.
Claim 6
Dependent Claim
37 words
An infrared microspectrometer according to claim 1, wherein the optical axis of said rays entering from said first optical means to said second optical means is parallel to the moving axis of said vertically movable sample stage.
Claim 7
Dependent Claim
29 words
An infrared microspectrometer according to claim 1, wherein said vertically movable stage is provided with a vertically movable screen for preventing external air and light from entering said stage.
Claim 8
Dependent Claim
93 words
An infrared microspectrometer for spectral measurement in a reflection mode comprising: a spectrophotometer; a fixed sample stage; a vertically movable objective; a detector; a first optical means for converting analyzing rays into parallel rays between the light source of said spectrophotometer and said vertically movable objective; and a second optical means for receiving said rays from said first optical means and projecting said rays to a sample; wherein the optical axis of said parallel rays is parallel to the optical axis of the rays projected from said second optical means to said sample.
Claim 9
Dependent Claim
93 words
An infrared microspectrometer for spectral measurement in a reflection mode comprising: a spectrophotometer; a fixed sample stage; a vertically movable objective; a detector; a first optical means for converting analyzing rays into parallel rays between the light source of said spectrophotometer and said vertically movable objective; and a second optical means for receiving said rays from said first optical means and projecting said rays to a sample; wherein the optical axis of said parallel rays is parallel to the optical axis of the rays projected from said second optical means to said sample.
Claim 10
Dependent Claim
20 words
An infrared microspectrometer according to any of claims 1 to 7, wherein said spectrophotometer is a Fourier transform infrared spectrometer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |