Patent US5252999A successfully refreshed from Google Patents.
US5252999A
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US
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Laser apparatus including binocular indirect ophthalmoscope
Assignee: Nidek Co Ltd
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Filing: 1991-10-22
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Granted: 1993-10-12
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Expires: 2011-10-22
Abstract
Abstract This application discloses a laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising, an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope, an optical element, which reflects the treatment laser beam while penetrates a pair of observation beams of the binocular indirect ophthalmoscope is provided in the object side of an ophthalmoscope lens, an optical system which directs the treatment laser beam to said optical element so that the axis of the treatment laser beam coincides with the substantial center of said pair of observation beam axes, whereby the power of the treatment laser beam becomes stable owing to above constitution.
Inventors
- 👤 Yasutaka Sukigara
- 👤 Nobuyuki Yano
- 👤 Yasuo Ota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:05
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/13; A61B3/132; A61F; A61F9/00; A61F9/007; A61F9/008; A61F9/00821; A61B90/00; A61B90/50; A61B2090/502; A61F2009/00861; A61F2009/00863
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
129 words
A laser apparatus including a binocul indirect opthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising: an optical fiber for guiding the treatment laser beam to the binocular indirect opthalmoscope; an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect opthalmoscope, provided in the object side of an opthalmoscope lens; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams; and an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams.
Claim 2
Dependent Claim
129 words
A laser apparatus including a binocul indirect opthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising: an optical fiber for guiding the treatment laser beam to the binocular indirect opthalmoscope; an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect opthalmoscope, provided in the object side of an opthalmoscope lens; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams; and an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams.
Claim 3
Dependent Claim
18 words
A laser apparatus according to claim 1, wherein the treatment laser beam is a laser beam for photocoagulation.
Claim 4
Dependent Claim
16 words
A laser apparatus according to claim 2, the laser beam for photocoagulation is semiconductor laser beam.
Claim 5
Dependent Claim
15 words
A laser apparatus according to claim 1, wherein the optical element is a dichroic mirror.
Claim 6
Dependent Claim
37 words
A laser apparatus according to claim 1, further comprising means for irradiating the eye to be treated by a guide beam, the treatment laser beam and the guide beam are coupled and sent into the optical fiber.
Claim 7
Dependent Claim
49 words
A laser apparatus according to claim 1, wherein said illumination optical system provides said illumination beam at a predetermined angle such that said illumination beam enters the eye to be treated at an angle to the optical axes of said pair of observation beams and said treatment laser beam.
Claim 8
Dependent Claim
142 words
A laser apparatus including a binocular indirect opthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising: an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect opthalmoscope is provided in the object side of an ophthalmoscope lens; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams; an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams; and means for continuously adjusting an optical distance of the treatment laser beam.
Claim 9
Dependent Claim
142 words
A laser apparatus including a binocular indirect opthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising: an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect opthalmoscope is provided in the object side of an ophthalmoscope lens; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams; an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams; and means for continuously adjusting an optical distance of the treatment laser beam.
Claim 10
Dependent Claim
37 words
A laser apparatus according to claim 7, wherein the continuous adjusting means includes an auxiliary lens in an optical path of the treatment laser beam and means for moving the auxiliary lens in its optical axis direction.
Claim 11
Dependent Claim
31 words
A laser apparatus according to claim 7, wherein the continuous adjusting means includes a working distance adjusting knob disposed on a body of the laser apparatus and operable by an operator.
Claim 12
Dependent Claim
130 words
A laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment semiconductor laser beam on an eye to be treated comprising: an optical fiber for guiding the semiconductor laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the semiconductor laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope, provided in the object side of an ophthalmoscope lens; an optical system which directs the semiconductor laser beam to the optical element so that the optical axis of the semiconductor laser beam coincides with the substantial center of optical axes of said pair of observation beams; and an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by the optical axes of said pair of observation beams.
Claim 13
Dependent Claim
130 words
A laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment semiconductor laser beam on an eye to be treated comprising: an optical fiber for guiding the semiconductor laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the semiconductor laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope, provided in the object side of an ophthalmoscope lens; an optical system which directs the semiconductor laser beam to the optical element so that the optical axis of the semiconductor laser beam coincides with the substantial center of optical axes of said pair of observation beams; and an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by the optical axes of said pair of observation beams.
Claim 14
Dependent Claim
36 words
A laser apparatus according to claim 10, further comprising means for irradiating the eye to be treated by a guide beam, the treatment beam and the guide beam being coupled and sent into the optical fiber.
Claim 15
Dependent Claim
21 words
A laser apparatus according to claim 10, further comprising means for continuously adjusting an optical distance of the treatment laser beam.
Claim 16
Dependent Claim
49 words
A laser apparatus according to claim 10, wherein said illumination optical system provides said illumination beam at a predetermined angle such that said illumination beam enters the eye to be treated at an angle to the optical axes of said pair of observation beams and said semiconductor laser beam.
Claim 17
Dependent Claim
158 words
A laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising: an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope is provided in the object side of an ophthalmoscope lens; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams; an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams; and means for irradiating the eye to be treated by a guide beam, the treatment laser beam and the guide beam are coupled and sent into the optical fiber.
Claim 18
Dependent Claim
158 words
A laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising: an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope is provided in the object side of an ophthalmoscope lens; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams; an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams; and means for irradiating the eye to be treated by a guide beam, the treatment laser beam and the guide beam are coupled and sent into the optical fiber.
Claim 19
Dependent Claim
156 words
A laser apparatus including a binocular indirect ophthalmoscope for irradiating a semiconductor laser beam on an eye to be treated comprising: an optical fiber for guiding the semiconductor laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the semiconductor laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope, provided in the object side of an ophthalmoscope lens; an optical system which directs the semiconductor laser beam to the optical element so that the optical axis of the semiconductor laser beam coincides with the substantial center of optical axes of said pair of observation beams; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by the optical axes of said pair of observation beams; and means for irradiating the eye to be treated by a guide beam, the treatment beam and the guide beam being coupled and sent into the optical fiber.
Claim 20
Dependent Claim
156 words
A laser apparatus including a binocular indirect ophthalmoscope for irradiating a semiconductor laser beam on an eye to be treated comprising: an optical fiber for guiding the semiconductor laser beam to the binocular indirect ophthalmoscope; an optical element, which reflects the semiconductor laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope, provided in the object side of an ophthalmoscope lens; an optical system which directs the semiconductor laser beam to the optical element so that the optical axis of the semiconductor laser beam coincides with the substantial center of optical axes of said pair of observation beams; an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by the optical axes of said pair of observation beams; and means for irradiating the eye to be treated by a guide beam, the treatment beam and the guide beam being coupled and sent into the optical fiber.
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