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Automatic focusing device having a hunting prevention circuit

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Automatic focusing device in a stereoscopic microscope

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device in microscope system

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device of a microscope

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device probe comprising a focusing device and

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device using a light sensor of center-split t

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device which inhibits focusing when a low con

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device with frequency weighted amplification

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device with low light contrast inhibiting mea

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing device with range boundary setting

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing mechanism for an operation microscope having

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing mechanism for mounting on measuring device

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate

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Automatic focusing method and apparatus utilizing contrasts of p

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing of every image point in an image

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing of optical images

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing system

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing system

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing system

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Automatic focusing system for a microscope

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Automatic focusing system including quantizing means

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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