The MT-7S  Color Check Tester is a professional optical instrument dedicated to lens color difference comparison. It enables simultaneous color comparison of 6 groups of lenses, featuring fast measurement speed and easy operation, compliant with multiple domestic and international standards.

Features:

• Ultra-fast single measurement, completed within 1 second

• Simultaneous color comparison for 6 specimen groups

• Adapted to high-temperature & high-humidity dyeing working environments

• Compatible with power lenses (central power ≤ ±4D)

• Conforms to a full range of domestic and international industry standards

Function:

Transmittance Curve Graph

Displays transmittance curve in the 380~780nm; default transmittance value is set to 0 for UV wavelength range.

Wavelength Quick Comparison Tool

Vertical graduation lines display corresponding transmittance values of the selected wavelength instantly.

Multi-sample Color Matching

Supports color comparison of six lens samples, ideal for color check across multiple dyeing machines.

Adjustable Sampling Interval

Wavelength sampling interval selected at 1nm or 5nm.

Master Template Data Storage

Customizable master template data, retrievable anytime for comparison testing.

CIE Lab Color Difference Analysis for Dyed Lenses

Evaluates L (lightness), a (red-green axis), b (yellow-blue axis) values and automatically calculates color difference

Lab Color Matching Modes

Built-in CIE color coordinates: D65 2° standard observer and D65 10° standard observer.

Human Vision-Based Color Difference Calculation

Automatically computes ΔE2000 total color difference, ΔH hue difference and ΔC chroma difference.

Visual Color Simulation 

On-screen color swatch preview for intuitive visual comparison of lens tint.

Traffic Signal Q Factor 

Calculates Q factor values to meet sunglass standard worldwide

CIE Color Limit Compliance (US Standard)

Tests CIE XY chromaticity coordinates and auto-judges pass/fail against US standard

CIE Color Limit(US Standard) and CIE 1976 Lab

Traffic Signal Q factor, Tv value and Color No

Transmittance Curve ( Standard sample vs Tested sample)