← Back to Patent Explorer
US4594608A Expired / Lapsed US ⏱️ 0.0 years remaining

TV-photography system for surgical microscope

Assignee: Hitachi Denshi System Service KK
•
Filing: 1983-09-14
•
Granted: 1986-06-10
•
Expires: 2003-09-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A TV-photography system for a surgical microscope, said system being constructed in such a manner that an optical path, which extends from an objective lens to an eyepiece, is divided by a beam splitter and an imaging adapter equipped with a shiftable built-in mirror is positioned on a divided-out optical path so as to operably guide the divided-out optical path to either a television camera or a still photographic camera, which system comprises control means adapted to operate the shiftable built-in mirror and still photographic camera successively in accordance with a preset sequence so that, in the course of displaying a selected region on a monitor TV by means of the television camera, a still picture of the selected region can be automatically taken by inputting only a prescribed start signal to the control means. The above system enables to automatically take a series of still pictures without need for interrupting the operation. There is no danger to contaminate a sterilized drape which normally covers the surgical microscope. Resulting still pictures are absolutely free from camera-shake and are thus very sharp.

Inventors

  • 👤 Yasuhiko Hatae
  • 👤 Shigeaki Morimitsu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:31
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0012; G02B21/36; G02B21/365; G03; G03B; G03B17/00; G03B17/48; H; H04; H04N; H04N23/00; H04N23/60

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 218 words
A TV-photography system for use in controlling a sterile surgical microscope system comprising: an objective lens; an eyepiece; a beam splitter placed in the optical path between said objective lens and said eyepiece for dividing the optical image produced from said objective lens; an imaging adapter positioned on said divided portion of said optical image; a shiftable mirror positioned in said imaging adapter for reflecting the divided optical image from said beam splitter; a means for placing a television camera in one of the optical paths of said shiftable mirror; a means for placing a still photographic camera in another optical path of said shiftable mirror; and shifting means for shifting the position of said shiftable mirror comprising: control means coupled to said shifting means and to the still photographic camera for successively operating said shiftable mirror and said still photographic camera in accordance with a present sequence; and humanly operable switch means coupled to said control means for providing a prescribed starting signal to said control means such that upon said control means receipt of said start signal said control means operates such that in the course of displaying a selected region being viewed by said objective lens through a video monitor coupled to the television camera, a still picture of said selective region is automatically taken.
Claim 2
Dependent Claim 218 words
A TV-photography system for use in controlling a sterile surgical microscope system comprising: an objective lens; an eyepiece; a beam splitter placed in the optical path between said objective lens and said eyepiece for dividing the optical image produced from said objective lens; an imaging adapter positioned on said divided portion of said optical image; a shiftable mirror positioned in said imaging adapter for reflecting the divided optical image from said beam splitter; a means for placing a television camera in one of the optical paths of said shiftable mirror; a means for placing a still photographic camera in another optical path of said shiftable mirror; and shifting means for shifting the position of said shiftable mirror comprising: control means coupled to said shifting means and to the still photographic camera for successively operating said shiftable mirror and said still photographic camera in accordance with a present sequence; and humanly operable switch means coupled to said control means for providing a prescribed starting signal to said control means such that upon said control means receipt of said start signal said control means operates such that in the course of displaying a selected region being viewed by said objective lens through a video monitor coupled to the television camera, a still picture of said selective region is automatically taken.
Claim 3
Dependent Claim 29 words
A TV-photographic system as in claim 1, further comprising: an automatic diaphragm having a second control means operable in accordance with the video signal level of the television camera.
Claim 4
Dependent Claim 38 words
A TV-photographic system as in claim 2, further comprising: means for coupling said second control means to said automatic diaphragm such that when said still picture is being taken, said automatic diaphragm is maintained in an open position.
Claim 5
Dependent Claim 24 words
A TV-photographic system as in claim 1, further comprising: means for increasing the luminous energy of a light source said still camera is operative.
Claim 6
Dependent Claim 25 words
A TV-photographic system as in claim 2, further comprising: means for increasing the luminous energy of a light source when said still camera is operative.

References Cited (Backward Citations)

US2974573A Cited
US3546378A Cited
US3883689A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-06-09 1989-12-09 1990-06-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-06-09 1993-12-09 1994-06-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-06-09 1997-12-09 1998-06-10 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag