LASER SCANNING DIGITAL CAMERA WITH PUPIL PERIPHERY ILLUMINATION AND POTENTIAL FOR MULTIPLY SCATTERED LIGHT IMAGING
First Claim
1. A digital retinal imaging device comprising:
- an illumination source operable to produce a source beam, wherein the source beam defines an illumination pathway;
an optical element situated within the illumination pathway, the optical element operable to focus the illumination pathway into an illumination slit at a plane conjugate to the target, wherein the illumination slit is slit shaped;
a shaping mechanism positioned within the illumination pathway, wherein the shaping mechanism shapes the source beam into at least one arc at a plane conjugate to a pupil;
a scanning mechanism operable to cause a scanning motion of the illumination pathway in one dimension with respect to a target; and
a first two dimensional detector array operable to detect illumination returning from the target and acquire one or more data sets from the detected illumination, wherein the returning illumination defines a detection pathway;
wherein the digital retinal imaging device is operable to minimize at least one aberration from the optical element or an unwanted reflection from the target or a reflection from a device.
2 Assignments
0 Petitions
Accused Products
Abstract
A portable, lightweight digital imaging device uses a slit scanning arrangement to obtain an image of the eye, in particular the retina. In at least one embodiment, a digital retinal imaging device includes an illumination source operable to produce a source beam, wherein the source beam defines an illumination pathway, a scanning mechanism operable to cause a scanning motion of the illumination pathway in one dimension with respect to a target, an optical element situated within the illumination pathway, the optical element operable to focus the illumination pathway into an illumination slit at a plane conjugate to the target, wherein the illumination slit is slit shaped, a first two dimensional detector array operable to detect illumination returning from the target and acquire one or more data sets from the detected illumination, wherein the returning illumination defines a detection pathway, and a shaping mechanism positioned within the illumination pathway, wherein the shaping mechanism shapes the source beam into at least one arc at a plane conjugate to the pupil. In at least one exemplary embodiment, the digital retinal imaging device is operable to minimize at least one aberration from the optical element or an unwanted reflection from the target or a reflection from a device.
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Citations
37 Claims
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1. A digital retinal imaging device comprising:
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an illumination source operable to produce a source beam, wherein the source beam defines an illumination pathway; an optical element situated within the illumination pathway, the optical element operable to focus the illumination pathway into an illumination slit at a plane conjugate to the target, wherein the illumination slit is slit shaped; a shaping mechanism positioned within the illumination pathway, wherein the shaping mechanism shapes the source beam into at least one arc at a plane conjugate to a pupil; a scanning mechanism operable to cause a scanning motion of the illumination pathway in one dimension with respect to a target; and a first two dimensional detector array operable to detect illumination returning from the target and acquire one or more data sets from the detected illumination, wherein the returning illumination defines a detection pathway; wherein the digital retinal imaging device is operable to minimize at least one aberration from the optical element or an unwanted reflection from the target or a reflection from a device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A digital imaging device comprising:
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an illumination source operable to produce a source beam, wherein the source beam defines an illumination pathway; an optical element situated within the illumination pathway, the optical element operable to focus the illumination pathway into an illumination slit at a plane conjugate to the target, wherein the illumination slit is slit shaped; a shaping mechanism positioned within the illumination pathway, wherein the shaping mechanism shapes the source beam into at least one arc at a plane conjugate to a pupil; a scanning mechanism operable to cause a scanning motion of the illumination pathway in one dimension with respect to a target; a first two dimensional detector array operable to detect illumination returning from the target and acquire one or more data sets from the detected illumination, wherein the returning illumination defines a detection pathway, wherein the first two dimensional detector array and illumination slit are synchronized to detect a line by line scan of the target or an area by area scan of the target; and a dispersive element used in conjunction with the first two dimensional detector array to spatially filter a light remitted from the target by wavelength; wherein the digital imaging device is operable to minimize at least one aberration from the optical element or an unwanted reflection from the target or a reflection from a device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A digital imaging device comprising:
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an illumination source operable to produce a source beam, wherein the source beam defines an illumination pathway; an optical element situated within the illumination pathway, the optical element operable to focus the illumination pathway into an illumination slit, wherein the illumination slit is slit shaped; a scanning mechanism operable to cause a scanning motion of the illumination pathway in one dimension with respect to a target; a first two dimensional detector array operable to detect illumination returning from the target and acquire one or more data sets from the detected illumination, wherein the returning illumination defines a detection pathway, wherein the two dimensional detector and illumination slit are synchronized to detect a line by line scan of the target or an area by area scan of the target; and a dispersive element used in conjunction with the two dimensional detector to spatially filter a light remitted from the target by wavelength; wherein the digital imaging device is operable to minimize at least one aberration from the optical element or an unwanted reflection from the target or a reflection from a device. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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Specification