US3832042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal reading device for ophthalmological instruments
Assignee: Heine Optotechnik KG
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Filing: 1972-11-20
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Granted: 1974-08-27
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Expires: 1992-11-20
Abstract
Abstract An ophthalmological instrument in which selected parameters of the optical function of the instrument may be varied during use is provided with an internal optical system under control of the user whereby figures, symbols, scales or other indicia identifying the momentary value of the variable parameters are rendered visible to the user in the instrument viewing aperture while the instrument is in use.
Inventors
- 👤 H Heine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:56
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/12; A61B3/1208
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying seLected parameters of the optical function of said instrument while the instrument is in use with the examiner looking through the viewing passage, indicia carrying means for identifying the value of said variable parameters of said intrument, said indicia not being visible within said viewing passage during normal observation with said instrument, optical means for rendering said indicia visible within said viewing passage when said indicia are illuminated, a light source for providing illumination during normal use of said instrument, a bundle of optical fibers communicating light from said light source to a position adjacent said indicia carrying means for illuminating said indicia under control of said examiner and rendering said indicia visible within said viewing passage so that said examiner can determine said parameters without removing the instrument from viewing position.
Claim 2
Dependent Claim
162 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying seLected parameters of the optical function of said instrument while the instrument is in use with the examiner looking through the viewing passage, indicia carrying means for identifying the value of said variable parameters of said intrument, said indicia not being visible within said viewing passage during normal observation with said instrument, optical means for rendering said indicia visible within said viewing passage when said indicia are illuminated, a light source for providing illumination during normal use of said instrument, a bundle of optical fibers communicating light from said light source to a position adjacent said indicia carrying means for illuminating said indicia under control of said examiner and rendering said indicia visible within said viewing passage so that said examiner can determine said parameters without removing the instrument from viewing position.
Claim 3
Dependent Claim
154 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying selected parameters of the optical function of the instrument while the instrument is in use with the examiner looking through the viewing passage, indicia carrying means for identifying the value of said variable parameters of said instrument, said indicia not being visible within said viewing passage during normal observation with said instrument, optical means including a partially reflective mirror positioned within said viewing passage, said indicia being positioned so as to be observable in said mirror when illuminated, and indicia illuminating means under control of said operator for illuminating said indicia at a desired time during use of said instrument, thereby rendering said indicia visible within said viewing passage so that said examiner can determine said parameters without removing said instrument from viewing position.
Claim 4
Dependent Claim
154 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying selected parameters of the optical function of the instrument while the instrument is in use with the examiner looking through the viewing passage, indicia carrying means for identifying the value of said variable parameters of said instrument, said indicia not being visible within said viewing passage during normal observation with said instrument, optical means including a partially reflective mirror positioned within said viewing passage, said indicia being positioned so as to be observable in said mirror when illuminated, and indicia illuminating means under control of said operator for illuminating said indicia at a desired time during use of said instrument, thereby rendering said indicia visible within said viewing passage so that said examiner can determine said parameters without removing said instrument from viewing position.
Claim 5
Dependent Claim
145 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying selected parameters of the optical function of the instrument while the instrument is in use with the examiner looking through the viewing passage, indicia carrying means for identifying the value of said variable parameters of said instrument, said indicia not being visible within said viewing passage during normal observation with said instrument, optical means adapted to be interposed in said viewing passage for rendering said indicia visible within said viewing passage for a brief interval and control means accessable to the examiner for presenting said indicia within said viewing passage at a desired time while said instrument is in use so that said examiner can determine said parameters without removing said instrument from viewing position.
Claim 6
Dependent Claim
145 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying selected parameters of the optical function of the instrument while the instrument is in use with the examiner looking through the viewing passage, indicia carrying means for identifying the value of said variable parameters of said instrument, said indicia not being visible within said viewing passage during normal observation with said instrument, optical means adapted to be interposed in said viewing passage for rendering said indicia visible within said viewing passage for a brief interval and control means accessable to the examiner for presenting said indicia within said viewing passage at a desired time while said instrument is in use so that said examiner can determine said parameters without removing said instrument from viewing position.
Claim 7
Dependent Claim
112 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying the power of a lens inserted in the viewing passage while the instrument is in use with the operator looking through the passage, indicia carrying means for identifying the power of the lens in said viewing passage, optical means rendering said indicia visible within said viewing passage, and means for inserting a supplemental lens in said viewing passage, said supplemental lens inserting means disabling said optical means so that said indicia may not be rendered visible when said supplemental lens is inserted.
Claim 8
Dependent Claim
112 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying the power of a lens inserted in the viewing passage while the instrument is in use with the operator looking through the passage, indicia carrying means for identifying the power of the lens in said viewing passage, optical means rendering said indicia visible within said viewing passage, and means for inserting a supplemental lens in said viewing passage, said supplemental lens inserting means disabling said optical means so that said indicia may not be rendered visible when said supplemental lens is inserted.
Claim 9
Dependent Claim
108 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying the power of a lens inserted in the viewing passage while the instrument is in use with the operator looking through the passage, indicia carrying means for identifying the power of the lens in said viewing passage, opticAl means rendering said indicia visible within said viewing passage, and means for inserting a supplemental lens in said viewing passage, said supplemental lens inserting means rendering supplemental indicia visible in said viewing passage indicating that said supplemental lens is inserted.
Claim 10
Dependent Claim
108 words
A diagnostic instrument for use in observation and/or analysis of the eye comprising an instrument chassis having a viewing passage through which the examiner observes the eye, means for varying the power of a lens inserted in the viewing passage while the instrument is in use with the operator looking through the passage, indicia carrying means for identifying the power of the lens in said viewing passage, opticAl means rendering said indicia visible within said viewing passage, and means for inserting a supplemental lens in said viewing passage, said supplemental lens inserting means rendering supplemental indicia visible in said viewing passage indicating that said supplemental lens is inserted.
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |