Micro Spectrophotometer USPM-RU III

Measuring Even Minute Areas

The curved surface of the lens can be measured from a minute spot as small as ø60 μm or ø30 μm formed on the sample surface. This provides the ability to use a goniometer to examine the curved side of lenses or other optical components.

Fast Results

Quick, highly repeatable measurements can be achieved in seconds using a flat field grating, line sensor and high-speed spectrophotometry.

Reduces Backside Interference

Accurate measurement of surface reflectivity can be performed without the costly steps needed to prevent rear surface reflection. Rear surface-reflected light is reduced by means of special optics using ring-shape illumination light that block all out-of-focus light reflection similar to a confocal system. Whether your optical component is spherical, aspherical or flat, the USPM-RU III does not require sample preparation through antireflection treatments.

Measurement wavelength

380nm – 780nm

Measurement method

Comparison measurement using reference specimen

Sample N.A.*

0.12 (using 10x objective lens) 

0.24 (using 20x objective lens) 

* it differs from objective lens’ N.A.

Sample W.D.

10.1 mm (using 10x objective lens) 

3.1 mm (using 20x objective lens)

Sample curvature radius

-1R – ∞, +1R – ∞

Sample measurement range

Approximately ø60 µm (using 10x objective lens) 

Approximately ø30 µm (using 20x objective lens)

Measurement repeatability (2σ)

±0.1 % and less (during 380 nm – 410 nm measurement) 

±0.01 % and less (during 410 nm – 700 nm measurement)

Display resolution

1 nm

Measurement time

A few secs-several secs (it differs from sampling time)

Light source

Halogen lamp 12 V 100W

Z-direction movement range of the stage

85mm

PC interface

USB

Weight

Unit Approximately 20 kg 

Power source for light source: Approximately 3 kg 

Control box: Approximately 8 kg

External dimensions

Unit: 300 (W) x 550 (D) x 570 (H) mm 

Power source for light source: 150 (w) x 250 (D) x 140 (H) mm 

Control box: 220 (W) x 250 (D) x 140 (H) mm

Power Source

Power source for light source: 100 V (2.8A)/220 V AC 

Control box: 100 V (0.2A)/220V AC

Environment for use

Installed at the horizontal plane with no vibration 

Temperature: 23 ±5°C 

Humidity: 60% or less 

An environment is not subject to air fluctuation