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Dual vs lens-focused crystal advantages?

Posted by: Gary Truemner , E-mail: loca2016@tor.hookup.net, on September 08, 1996 at 20:40:36:

The original Dual crystal contact probes used for near surface resolution seem to have been superceded by lens-focused
single crystal probes.

Are there new crystal materials which would give Dual crystal probes an advantage over lens-focus probes? i.e. optimized
transmitter and receiver crystal material.

Other than assembly cost of Dual probes, are there clear reasons not to use Dual probes instead of lens-focus single crystal
probes?

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Follow Ups:

• Re: Dual vs lens-focused crystal advantages? Gerhard Splitt 16:30:49 9/09/96 (size: 1582) (4)
  • Re: Dual vs lens-focused crystal advantages? Gary Truemner 23:55:05 9/15/96 (size: 1820) (3)
    • Re: Dual vs lens-focused crystal advantages? Gerhard Splitt 12:22:25 9/18/96 (size: 4209) (2)
      • Re: Dual vs lens-focused crystal advantages? Gary Truemner 03:13:46 9/19/96 (size: 514) (1)
        • Re: Dual vs lens-focused crystal advantages? Gerhard Splitt 16:23:42 9/23/96 (size: 1415) (0)

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Comments:
: The original Dual crystal contact probes used for near surface resolution seem to have been superceded by lens-focused : single crystal probes. : Are there new crystal materials which would give Dual crystal probes an advantage over lens-focus probes? i.e. optimized : transmitter and receiver crystal material. : Other than assembly cost of Dual probes, are there clear reasons not to use Dual probes instead of lens-focus single crystal : probes?

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