Upright Laser Interferometer-Wavelength Objective Lens Testing Capabilities

Upright laser interferometer

-Main Functions and Application Scope

It enables measurement of the wavefront aberration of objective lenses and outputs PV and RMS values. It is used for transmitted wavefront testing of commonly available microscope objectives, tube lenses, and similar components, i.e., online monitoring of optical system alignment and measurement of system accuracy.

Test Schematic Diagram

-Main Specifications and Technical Indicators

1.Measurement method: Fizeau interferometry principle

2.Effective clear aperture: 60 mm

3.Light source: Semiconductor laser (635 nm)

4.Camera: 1/2″ sensor; effective imaging resolution 1024 × 1024

5.Host spatial resolution: >150 fringe pairs across the full aperture

6.Phase-shifting method: Piezoelectric ceramic mechanical phase shifting

7.Alignment method: Combination of cross-hair fine alignment and rapid alignment, with alignment accuracy of ±3°

8.Transmission reference mirror material: Fused silica

9.Flat reference mirror accuracy: PV: better than λ/20

10.Spherical reference mirror accuracy: PV: better than λ/20

11.Objective lens adjustment angle: ±5°

12.Objective lens to reflective bowl travel: Z-axis effective travel 300 mm

-Product Features

1. Anti-Vibration Function: Sirius anti-vibration PSI (Anti-vibration PSI) analysis software, combined with rapid mechanical phase shifting, enables stable and reliable measurement in conventional vibration environments.

2. High-Definition Resolution: High-definition optical system design provides stronger detail resolution. G60 standard-definition version 60 mm host spatial resolution (number of periods) greater than 150 fringe pairs (mechanical phase-shifting mode).

3. Result Output:

-Interferometer Model Selection

1. 601 Top Beam Output Interferometer ：Suitable for high-mix, low-volume production. No recess base required, but inspection is relatively slower due to varying R values.
2. 601 Bottom Beam Output Interferometer ：Suitable for mass production.
3. 601 Spherical Laser Interferometer ：The 601 interferometer is available in top beam output / bottom beam output models, and can be optionally equipped with a grating ruler for measuring the R value of lenses.