Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
199 words
An apparatus for training and measuring the human visual accommodation system characterized by a base (18); an eyepiece (70) and a stage (20) mounted on opposite ends of said base (18); a first lens (64) mounted on said base between said eyepiece (70) and said stage (20); means (22,24) for moving said stage (20) toward or away from said first lens (64); a plurality of elements mounted on said stage (20) in linear optical alignment comprising a light source (30) mounted on the end of said stage (20) farthest from said first lens (64); a target (36) mounted on said base near the middle portion of said stage; a second lens (32) mounted on said stage between said light source (30) and said target (36); a third lens (58) mounted on the end of said stage (20) nearest said first lens (64) whereby an image of said target (36) is produced between said first lens (64) and said third lens (58) and said image is moved with respect to said eyepiece (70) when said stage (20) is moved; and a plurality of interchangeable apertures (42,48,52) mounted on said stage (20) between said third lens (58) and said target (36).
Claim 2
Independent Claim
199 words
An apparatus for training and measuring the human visual accommodation system characterized by a base (18); an eyepiece (70) and a stage (20) mounted on opposite ends of said base (18); a first lens (64) mounted on said base between said eyepiece (70) and said stage (20); means (22,24) for moving said stage (20) toward or away from said first lens (64); a plurality of elements mounted on said stage (20) in linear optical alignment comprising a light source (30) mounted on the end of said stage (20) farthest from said first lens (64); a target (36) mounted on said base near the middle portion of said stage; a second lens (32) mounted on said stage between said light source (30) and said target (36); a third lens (58) mounted on the end of said stage (20) nearest said first lens (64) whereby an image of said target (36) is produced between said first lens (64) and said third lens (58) and said image is moved with respect to said eyepiece (70) when said stage (20) is moved; and a plurality of interchangeable apertures (42,48,52) mounted on said stage (20) between said third lens (58) and said target (36).
Claim 3
Dependent Claim
38 words
An apparatus as set forth in claim 1 wherein said light source (30) and said second lens (32) are enclosed within a chamber (28) and said target (36) comprises a portion of one wall (38) of said chamber.
Claim 4
Dependent Claim
29 words
Apparatus as set forth in claim 1 further characterized by having a diopter readout (23) to show the relationship between the movable stage (20) and the first lens (64).
Claim 5
Dependent Claim
46 words
The apparatus of claim 1 wherein said light source (30), first (64), second (32) and third (58) lenses and said eyepiece (70) are aligned on a single optical axis (74) and wherein only one aperture (42) is effectively on said optical axis at any given time.
Claim 6
Dependent Claim
55 words
The apparatus of claim 4 wherein said aperture (42) is at the focal plane of said third lens (58), said target (36) is two focal lengths from said third lens (58) and said target image is two focal lengths from said third lens (58) and between said first lens (64) and said third lens (58).
Claim 7
Dependent Claim
25 words
The apparatus of claim 1 wherein said interchangeable apertures (42,48 and 52) comprise a wide-open aperture (42),a pinhole aperture (48) and a two-hole aperture (52).
Claim 8
Dependent Claim
25 words
The apparatus of claim 6 wherein each hole of the two-hole aperture is covered by a different colored filter (75,76) to provide a defocus cue.
Claim 9
Dependent Claim
27 words
Apparatus as set forth in claim 6 wherein means (44,46) are provided for moving at least one of said apertures on and off of the optical axis.
Claim 10
Dependent Claim
28 words
Apparatus as described in claim 6 wherein means (78) are provided for alternately positioning the pinhole aperture (48) and the two-hole aperture (52) at the optical axis (74).