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US 4,538,888 AGranted
Binocular ophthalmoscope
OwnerJesse L. Sigelmaninventor
Life of this patent
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Abstract
A binocular ophthalmoscope of the type including an optical viewing system. The binocular ophthalmoscope includes a headgear adapted to be worn on the examiner's head for supporting the optical viewing system in optical alignment with the examiner's eyes and light source for illuminating a patient's eye which is slideably mounted on the headgear and movable in a lateral direction.
Claims7
An indirect binocular ophthalmoscope, comprising:
- an optical viewing system;
- light source means having a light outlet for illuminating a patient's eye;
- and
- headgear means mountable on an examiner's head during use for supporting the optical viewing system in optical alignment with the examiner's eyes and the light source means with the light outlet above the optical viewing system;
- wherein the light source means includes a cylindrical housing, means for selectively providing both full beam and slit beam illumination of a patient's eye and wherein the headgear means includes means mounting the cylindrical housing for movement only in a lateral direction and for rotation about the axis of the housing independent of the lateral movement to alter the angle of the light beam from the light source means without changing its vertical angulation whereby the user can independently adjust the lateral position of the light beam and angle of the light beam independently and without affecting the vertical angulation.
2 more elements
Dependencies are inferred from the claim text.