Photographic apparatus for slit lamp
AssigneeCodman & Shurtleff, Inc.
InventorMiguel Martinez
Life of this patent
Estimating the term…
Abstract
Photographic apparatus for a slit lamp includes a photographic camera adapted to be mounted on one ocular of a binocular microscope of the slit lamp and a light sensing device positioned adjacent an objective of the microscope for providing a signal corresponding to light at the objective to an automatic exposure control mechanism in the camera, the other ocular of the microscope being free to permit viewing of an object being photographed.
Claims20
In combination with an opthalmic slit lamp device having a binocular microscope, an apparatus for photographing an object through said microscope, comprising:
- photographic camera means having an automatic exposure control mechanism and a focusing lens;
- adapter means for mounting said photographic camera means on the ocular of the microscope, wherein said camera means is supported before said ocular via its focusing lens;
- light sensing means for providing a signal representative of light sensed thereby;
- means for coupling said signal from said light sensing means to said automatic exposure control mechanism to control operation thereof;
- and
- mounting means for positioning said light sensing means adjacent the objective of the microscope whereby said automatic exposure control mechanism is operated in response to light at the objective of the microscope while the image to be photographed is transmitted through the microscope to said photographic camera means.
Apparatus for photographing an enlarged image of an object comprising
- a binocular microscope including first and second oculars and objective means associated with said first and second oculars to produce an enlarged image thereat;
- a photographic camera having an automatic exposure control mechanism, a lens assembly and a barrel surrounding said lens assembly;
- an adapter ring having a central bore receiving said first ocular, said adapter ring being secured to said barrel to align said first ocular with said lens assembly and mount said photographic camera on said microscope;
- and
- light sensing means disposed adjacent said objective means of said microscope for sensing light at said objective means and providing a signal representative of the sensed light to said automatic exposure control mechanism whereby said automatic exposure control mechanism is operated in response to light at said objective means and the image to be photographed is transmitted to said photographic camera through said first ocular while the image to be photographed can be viewed through said second ocular.
A slit lamp comprising:
- pivotally mounted slit illumination means for projecting a slit light beam toward an eye of a patient;
- a pivotally mounted binocular microscope having a first ocular and a first objective defining a first light path and a second ocular and a second objective defining a second light path converging with said first light path at the eye of the patient;
- a photographic camera mounted on said first ocular via said camera lens and having an automatic exposure control mechanism;
- and
- light sensing means including a photoelectric cell positioned adjacent said first and second objectives and means for electrically coupling said photoelectric cell with said automatic exposure control mechanism whereby said automatic exposure control mechanism is operated in response to light at said first and second objectives and the image of the eye to be photographed is transmitted to said photographic camera along said first light path while the image of the eye can be viewed along said second light path to permit movement of said slit illumination means and said binocular microscope for successive photographs during continuous viewing of the eye.
Dependencies are inferred from the claim text.