The DR-M2 artificial lens refractive index tester can measure the refractive index (nD) and Abbe value using different wavelengths in the wavelength range of 450 to 1100nm. The measurement results are determined by adjusting the boundary line to the cross point, and the measurement results are displayed in digital form on the LCD screen. Compared with traditional Abbe refractometers, the readings are faster and clearer. Especially suitable for high-precision measurement of refractive index of artificial lenses or contact lens materials.

[Product Parameters]

• Measurement range: refractive index (nD) 1.3000-1.7100 (589nm)
• Resolution: refractive index (nD): 0.00001, Abbe number: 0.1
• Measurement accuracy: refractive index (nD): ± 0.0002 (using 500 to 650nm test pieces)
• Measurement temperature: 5-50 ℃
• Light source: halogen lamp
• Power Supply: AC100～240V，50/60Hz
• Size and weight: 13 × 29 × 31cm, 6.0kg (host), 15 × 33 × 11cm, 3.2kg (power box)

[Standard Configuration]

• One host
• One power box
• enclosure:
  • ---1 wrench
  • ---1 standard calibration film
  • ---Refractive liquid (4ml) 1 bottle
  • ---1 piece of lighting glass
  • ---Filter 589nm
  • ---1 copy of instruction manual

[Optional Configuration]

• Filter 486nm, 656nm, combined with 589nm for measuring Abbe value Vd
• Filter combinations of 546nm, 480nm, and 644nm are used to measure the Abbe value Ve
• External constant temperature cycler
• External thermal printer
• Digital imaging system

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Reference: Refractive Index of Common Lens Materials: