Patent ID: 7203006

Claim:
A telescope eyepiece assembly comprising: a first tubular member having a first end configured for engagement with the body of a telescope and a threaded second end; a second tubular member having a threaded first end configured for engagement with the second end of said first tubular member, and an externally threaded neck near a second end, a plurality of axially extending slots being defined in the second end to form a plurality of resilient segments extending from said neck; and a locking ring having an internally threaded first end configured for engagement with the externally threaded second end of said second tubular member, the locking ring having an annular ridge projecting from an internal surface thereof; wherein said annular ridge encircles said plurality of resilient segments when the locking ring is engaged with the externally threaded second end of said second tubular member, whereby said resilient segments are flexed radially inward as said locking ring is tightened to retain in place an eyepiece inserted in the second end of said second tubular member; whereby rotation of said second tubular member results in axial movement of an eyepiece retained inserted in the second end of said second tubular member for focusing said telescope.