| 摘要 |
PURPOSE:To set an eye point invariably at a proper position by providing an ocular lens frame movably and fixing it after focus adjustment, and fixing an eyepiece to the adjusted ocular lens at the proper position. CONSTITUTION:The ocular lens 40 is arranged in the ocular lens frame 37, which is provided in an adjustable state while engaging a coupling member 10 threadably. The lens frame 37 is rotated to make a focus adjustment during adjustment, and the frame 37 is fixed to the coupling member 10 with a screw 43 where a sharp image is observed. Then, the 1st ocular cover 12A is fixed to the coupling member 10 with an adhesive and then the 2nd ocular cover 12B to which cover glass 15 and the eyepiece 14 are fitted is also fixed abutting the rear end surface of the frame 37. Consequently, the eye point is set invariably at the proper position without any influence of variance in the length of the lens system. |
