Autofocus video microscopes are efficient tools for industrial inspection, scientific research, and quality control. With their automated focusing capabilities and real-time video imaging, they significantly improve observation efficiency. However, not all scenarios are suitable for the use of such equipment.

Autofocus Video Microscope Optical Features

1. Fast autofocus: No manual focusing required, significantly improving detection efficiency.

2. Real-time video observation: Supports dynamic process observation and recording.

3. Limited depth of field: At high magnifications, the depth of field is shallow, requiring high sample flatness.

4. Dependent on surface texture/features: The autofocus algorithm relies on changes in brightness or structural features on the sample surface.

5. Sensitive to Vibration: Even minor vibrations may cause focusing instability or image blurring.

6. Adjustable Lighting: Four-zone adjustable lighting ensures uniform illumination, with automatic exposure reducing reflections and producing a soft effect.

Typical Application Scenarios

1. Batch product appearance inspection: electronic components (PCB solder joints, chip pins), precision parts (threads, small holes), and scratch and stain detection on jewelry.

2. Surface morphology analysis: Measurement of material surface roughness and scratch depth (requires 3D analysis software).

3. Dynamic process recording: Observation of micro-mechanical motion and material deformation under heat.

4. Educational demonstrations: Real-time display of microscopic structures for simultaneous observation by multiple users.

5. Laboratory routine testing: Rapid screening of biological samples and material microstructures.

Not Applicable Scenarios

1. Completely transparent/low-contrast samples: Glass, transparent plastic, unstained cells, etc., lack surface features, making it difficult for the autofocus system to find sufficient contrast for focusing.

2. Highly reflective or mirror-like surfaces: Highly reflective metals, mirrors, etc., cause strong light reflection, interfering with imaging and causing the autofocus system to malfunction or misjudge.

3. Deep holes or complex three-dimensional structures: Insufficient light in deep holes and obstructed views by internal wall structures make it difficult for the autofocus system to locate the effective focal plane.

4. High-speed movement or instantaneous changes: The autofocus system requires time to calculate and adjust, making it difficult to keep up with rapid changes, resulting in blurry images or missed critical frames.

5. High-temperature or extreme environment samples: Thermal radiation interferes with imaging, and high temperatures may damage the lens or sensor (most devices have an upper temperature limit of approximately 40°C–50°C).

6. Scenes requiring extremely large depth of field: Under high magnification, the depth of field is only micrometer-level, making it impossible to clearly display areas with significant height differences simultaneously.