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Automatic focus control unit, electronic device and automatic focus control method

An automatic focus and control unit technology, applied in the direction of optical components, installation, microscopes, etc., can solve the problems of structure expansion, installation of focus detection equipment, increase the cost of focus detection equipment, etc., and achieve the effect of fast focusing

Active Publication Date: 2009-10-14
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method may require a mechanism for moving the chromatic aberration correcting lens without misaligning the optical axis, which may require high precision accessories
In addition, the added optical components enlarge the structure and increase the cost of the focus detection equipment
Therefore, it is difficult to install focus detection equipment on conventional standard microscopes

Method used

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  • Automatic focus control unit, electronic device and automatic focus control method
  • Automatic focus control unit, electronic device and automatic focus control method
  • Automatic focus control unit, electronic device and automatic focus control method

Examples

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Embodiment Construction

[0033] Hereinafter, a specific description will be given of a microscope 1 to which an autofocus control unit, an electronic device, and an autofocus control method according to an embodiment of the present invention are applied with reference to the accompanying drawings.

[0034] refer to figure 1, the microscope 1 includes: an objective lens unit 10 provided with a plurality of objective lenses 2 with mutually different magnifications; an image pickup unit 11 for receiving reflected light generated by a laser beam directed to and reflected from the test sample 3, and An image pickup element 4 ; and an illumination unit 12 for illuminating the objective lens 2 with illumination light passing through the objective lens 2 are provided. Objective lens unit 10 also comprises: automatic focus control unit 13, is used for detecting the focal point of objective lens 2 relative to test sample 3; Drive unit 14, is used for changing between objective lens unit 10 and the mirror stage...

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PUM

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Abstract

The present invention discloses an automatic focus control unit, an electronic device and an automatic focus control method. The automatic focus control unit includes: a first light-emitting element; a line sensor; a second light-emitting element; a slit member; a shifting mechanism; and a controller. The invention may execute rapid focus without generating large deviation of focus point on sample of object lens.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter disclosed in Japanese Priority Patent Application JP 2008-103984 filed in the Japan Patent Office on Apr. 11, 2008, the entire content of which is hereby incorporated by reference. technical field [0003] In general, the present invention relates to an autofocus control unit and method for automatically controlling focus by positionally adjusting a test sample and an objective lens. In particular, the present invention relates to an autofocus control unit and method capable of performing focusing according to an objective lens when switching a plurality of objective lenses for use, and an electronic device. Background technique [0004] In the field of optical equipment such as optical microscopes, depth gauges, etc., autofocus devices have been used as means for automatically focusing on a test sample to be inspected. [0005] Examples of the autofocus device include a d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B21/24
CPCG02B21/245G02B21/247
Inventor 佐藤英树星光男菊地清幸松木康记武山宅寿
Owner DEXERIALS CORP
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