Retinal cameras having movable optical assemblies for facilitating multi-stage retinal imaging
Introduced here are retinal cameras having one or more optical components whose position can be modified so that the left and right eyes can be imaged during a single imaging operation. Collectively, the optical component(s) may be referred to as an “optical assembly.” An optical assembly can include the objective lens, lens tube, and other optical components such as mirror(s), light source(s), capturing medium(s), etc. An optical assembly of a retinal camera may be movable between a first position and a second position along an arcuate path. By moving the optical assembly between the first and second positions along the arcuate path, the retinal camera can align the lens tube with the left and right eyes of an individual while clearing her nose. Thus, the retinal camera may generate images of the left and right eyes during an imaging procedure without requiring that the individual move her head.
1. An imaging apparatus comprising:
an optical assembly movable between a first position and a second position along an arcuate path,
wherein the optical assembly includes:
a light source configured to emit light therefrom into an eye for illumination of a retina during an imaging procedure,
an objective lens configured to collect reflected light so as to image the retina, and
a lens tube configured to direct the reflected light toward a capturing medium;
an enclosure in which at least a portion of the optical assembly is housed;
a first interface component accessible along an exterior surface of the enclosure for moving the optical assembly between the first and second positions; and
a mask connected to the enclosure in such a manner to facilitate alignment of a left eye with the first position and a right eye with the second position,
wherein the mask is comprised of a flexible material configured to confirm to a face pressed against the mask to prevent ambient light from entering a cavity defined by an interior surface of the mask.
2. The imaging apparatus of claim 1 ,
wherein the arcuate path is defined along a horizontal plane, and
wherein movement of the optical assembly along a vertical plane is substantially zero as the optical assembly moves along the arcuate path.
3. The imaging apparatus of claim 1 , wherein the reflected light is light reflected off of the retina that has passed through the objective lens.
4. The imaging apparatus of claim 1 , further comprising:
a second interface component for moving the optical assembly along a vertical plane; and
a third interface component for moving the optical assembly along a horizontal plane.
5. The imaging apparatus of claim 4 , wherein the second and third interface components are positioned along opposite sides of the enclosure.
6. The imaging apparatus of claim 4 , wherein the first, second, and third interface components are separately manipulable mechanical components.
7. The imaging apparatus of claim 1 , further comprising:
an occlusion plate having an aperture through which the objective lens extends when the optical assembly is located in the first and second positions.
8. The imaging apparatus of claim 7 , wherein the mask includes a pair of slots for accommodating the occlusion plate.
9. The imaging apparatus of claim 8 ,
wherein a first portion of the occlusion plate extends through a first slot of the pair of slots into an ambient environment when the optical assembly is located in the first position, and
wherein a second portion of the occlusion plate extends through a second slot of the pair of slots into the ambient environment when the optical assembly is located in the second position.
10. The imaging apparatus of claim 7 , wherein the occlusion plate is movable along a linear path in conjunction with the arcuate movement of the optical assembly.
11. The imaging apparatus of claim 7 , wherein the objective lens retracts through the aperture in the occlusion plate as the optical assembly moves between the first and second positions.
12. An imaging apparatus comprising:
an optical assembly movable between a first position and a second position along an arcuate path,
wherein the optical assembly includes:
a light source configured to emit light therefrom into an eye for illumination of a retina during an imaging procedure,
an objective lens configured to collect reflected light so as to image the retina, and
a lens tube configured to direct the reflected light toward a capturing medium;
an enclosure in which at least a portion of the optical assembly is housed;
a first interface component accessible along an exterior surface of the enclosure for moving the optical assembly between the first and second positions;
an occlusion plate having an aperture through which the objective lens extends when the optical assembly is located in the first and second positions; and
a mask connected to the enclosure in such a manner to facilitate alignment of a left eye with the first position and a right eye with the second position,
wherein the mask includes a pair of slots for accommodating the occlusion plate,
wherein a first portion of the occlusion plate extends through a first slot of the pair of slots into an ambient environment when the optical assembly is located in the first position, and
wherein a second portion of the occlusion plate extends through a second slot of the pair of slots into the ambient environment when the optical assembly is located in the second position.
13. The imaging apparatus of claim 12 ,
wherein the arcuate path is defined along a horizontal plane, and
wherein movement of the optical assembly along a vertical plane is substantially zero as the optical assembly moves along the arcuate path.
14. The imaging apparatus of claim 12 , wherein the reflected light is light reflected off of the retina that has passed through the objective lens.
15. The imaging apparatus of claim 12 , further comprising:
a second interface component for moving the optical assembly along a vertical plane; and
a third interface component for moving the optical assembly along a horizontal plane.
16. The imaging apparatus of claim 15 , wherein the second and third interface components are positioned along opposite sides of the enclosure.
17. The imaging apparatus of claim 15 , wherein the first, second, and third interface components are separately manipulable mechanical components.
18. The imaging apparatus of claim 12 , wherein the occlusion plate is movable along a linear path in conjunction with the arcuate movement of the optical assembly.
19. The imaging apparatus of claim 12 , wherein the objective lens retracts through the aperture in the occlusion plate as the optical assembly moves between the first and second positions.