TM-30 Minus Green Filter

TM-30 is a specialized reference filter engineered specifically for TM-30 color quality metric evaluation and research applications. This filter exhibits a distinctive yellow-amber notch, maintaining green at 84.1 % while compressing the yellow region to 45.0 %. The separated green bands reveal the filter's precision design: 510-540 nm green stays elevated at 91.7 %, but 540-580 nm yellow-green drops sharply to 50.5 %, isolating yellow suppression from pure green correction. Peak transmission reaches 95.7 % at 685 nm with 81.7 % average, and blue excels at 89.3 %. TM-30 serves research labs, standardization committees, and color science applications requiring measurable yellow-specific filtering for CRI/TM-30 investigation.

Key Advantages

• Yellow-Specific Spectral Targeting - Unique 540-580 nm notch at 50.5 % isolates yellow suppression from broad green correction, enabling precise TM-30 evaluation and color quality metric research
• Separated Green-Yellow Response - 510-540 nm green at 91.7 % versus 540-580 nm yellow at 50.5 % provides distinct spectral signatures for scientific analysis of fluorescent and LED color characteristics
• Exceptional Blue Transmission - 89.3 % blue passage maintains excellent short-wavelength fidelity while yellow suppression proceeds, supporting color science applications requiring full visible range data
• Hard-Oxide Ion-Assisted Coating - Precision multilayer dichroic design ensures repeatable spectral performance across research protocols, calibration procedures, and long-term testing schedules
• Custom Format Options - Available in round, square, free-form blanks from 5 mm to 450 mm at 0.21-3.8 mm thickness on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG substrates for laboratory integration

Typical Applications

• TM-30 Research & Development - Support scientific investigation into TM-30 color quality metrics, enabling controlled testing of fluorescent and LED sources against standardized yellow-correction protocols
• Color Science Standardization - Enable research institutions and lighting standards committees to establish repeatable measurement baselines for yellow spectral characteristics in light source evaluation
• LED Phosphor Development - Assist phosphor researchers in isolating yellow-green emission characteristics during LED package optimization and color-rendering-index improvement cycles
• Spectral Analysis & Metrology - Provide laboratory-grade spectral filtering for precision light measurement systems, colorimetry instruments, and radiometric calibration procedures
• Lighting Industry Quality Control - Support manufacturing quality assurance and field testing of fluorescent and LED products against established color quality standards requiring yellow-notch verification

TM-30 supports research and standardization work with rapid custom production. Request samples for laboratory integration and testing protocols.