`US Patent RE42913
`Motion to Amend - Appendix A
`
`
`‘913 Claim
`48. A method of detecting
`characteristics of an object within an
`optical system, comprising:
`transmitting energy at an object
`included in an optical system having
`retroreflective characteristics, wherein
`the optical system includes a lens and
`the object includes a surface exhibiting
`some degree of reflectivity disposed
`substantially in a focal plane of the lens;
`receiving reflected radiant energy with
`an optical gain after retroreflection of
`the radiant energy; and
`detecting the reflected radiant energy
`after retroreflection
`to determine at least one characteristic
`of the object.
`
`
`
`
`Proposed Substitute Claim
`54. A method of detecting
`characteristics of an object within an
`optical system, comprising:
`transmitting energy at an object
`included in an optical system having
`retroreflective characteristics, wherein
`the optical system includes a lens and the
`object includes a surface exhibiting some
`degree of reflectivity disposed
`substantially in a focal plane of the lens;
`receiving reflected radiant energy with
`an optical gain after retroreflection of the
`radiant energy; and
`detecting the reflected radiant energy
`after retroreflection;
`to determine determining, from the
`optical gain, at least one characteristic of
`the object based on a change in a radiant
`flux density of the reflected radiant
`energy over time; and
`tracking the object based on the
`determined characteristic.
`
`
`
`
`
`
`
`‘913 Claim
`
`Proposed Substitute Claim
`
`
`
`49. The method of claim 48, wherein
`the at least one characteristic includes
`any optically detectable property of the
`object.
`
`50. The method of claim 48, wherein
`the at least one characteristic includes a
`relative position of the object within the
`optical system.
`
`51. An apparatus for detecting
`characteristics of an object within an
`optical system, the apparatus
`comprising:
`a radiant energy source for
`transmitting energy at an object
`included in an optical system having
`retroreflective characteristics, wherein
`the optical system includes a lens and
`the object includes a surface exhibiting
`some degree of reflectivity disposed
`substantially in a focal plane of the lens;
`and
`
`
`55. The method of claim [[48]] 54,
`wherein the at least one characteristic
`includes any optically detectable
`property of the object.
`
`56. The method of claim [[48]] 54,
`wherein the at least one characteristic
`includes a relative position of the object
`within the optical system.
`
`57. An apparatus for detecting
`characteristics of an object within an
`optical system, the apparatus comprising:
`
`a radiant energy source for
`transmitting energy at an object included
`in an optical system having
`retroreflective characteristics, wherein
`the optical system includes a lens and the
`object includes a surface exhibiting some
`degree of reflectivity disposed
`substantially in a focal plane of the lens;
`and
`
`-2-
`
`
`
`‘913 Claim
`
`Proposed Substitute Claim
`
`
`
`
`a detector for detecting received
`reflected radiant energy with an optical
`gain after retroreflection of the radiant
`energy
`to determine at least one characteristic
`of the object.
`
`
`
`52. The apparatus of claim 51, wherein
`the at least one characteristic includes
`any optically detectable property of the
`object.
`
`53. The apparatus of claim 51, wherein
`the at least one characteristic includes a
`relative position of the object within the
`optical system.
`
`
`a detector for detecting received
`reflected radiant energy with an optical
`gain after retroreflection of the radiant
`energy; and
`to determine a utilization system for
`determining, from the optical gain, at
`least one characteristic of the object
`based on a change in a radiant flux
`density of the reflected radiant energy
`over time; and for tracking the object
`based on the determined characteristic.
`
`
`
`58. The apparatus of claim [[51]] 57,
`wherein the at least one characteristic
`includes any optically detectable
`property of the object.
`
`59. The apparatus of claim [[51]] 57,
`wherein the at least one characteristic
`includes a relative position of the object
`within the optical system.
`
`-3-
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