It is possible to measure the total light transmittance when the sample is obliquely incident at any angle from -60° to 60°!
**Features** - This device is a transmittance meter that complies with the total light transmittance measurement standards (ISO 13468-1, JIS K 7361). It measures the total light transmittance of transparent objects by guiding a highly parallel light beam into an integrating sphere. - Furthermore, the light source can be adjusted to angles ranging from -60° to 60° relative to the sample, allowing for the measurement of total light transmittance at arbitrary angled incidence. - By adopting a double beam method, there is no need to move the sample to a compensating aperture to account for integrating sphere efficiency, enabling high-precision measurements with excellent operability. - The automatic angle adjustment of the light source allows for highly reproducible angle measurements through the use of an intelligent driver. - The optical system is designed in a vertical orientation, making it possible to measure even large samples simply by placing them on the sample stage. - The computation and control unit utilizes commercially available personal computers and employs software capable of various calculations, including averaging, ensuring fully automated operation that consistently yields stable measurement results.
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1. Detection Unit Measurement Target: Transmitted Object Sample Shape: A4 size, plate-shaped object, t = 10 mm (MAX) Sample Table: 530 × 430 mm * An aluminum plate (thickness 4 mm) is used in the center 350 × 350 mm, with a detachable auxiliary sample table around the perimeter. Light Source: Halogen lamp with dichroic mirror, 12V 50W (nominal lifespan 2000 hours) Overall Spectral Sensitivity: Approximates V(λ) and D65 light through the combination of light source, light receiving element, and color glass filter. Integrating Sphere Diameter: Approximately 150 mm Light Beam Diameter: Approximately 9 mm Sample Aperture: Approximately 30 × 15 mm (long hole) Incident Angle Range: ±60°, 0.1° step data reading time: Approximately 120 seconds Angle Accuracy: Within 0.05° Power Supply: AC 100V, 50/60Hz Power Consumption: Approximately 200W Dimensions & Weight: Approximately 530 (w) × 580 (d) × 570 (h) mm, Approximately 30 kg 2. Calculation and Display Unit A commercially available personal computer is used for the calculation and control unit, equipped with software programs capable of various calculations, including averaging. Display Content: ±60° 0.1° step data and graphs * Measurement step customization is possible * For more details, please feel free to contact our sales department.
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Company information
In 1947, a color research group was established in a corner of Tsukishima, Tokyo, which later became the Color Division of Nihon Denshi Sokki Co., Ltd., focusing mainly on the production of standard color samples and research and guidance on color adjustment. In November 1956, it became independent and was established as Murakami Color Technology Research Institute, Inc. Since its founding, our company has made the production of measuring instruments related to visual information processing, including "color and gloss," the creation of color samples, and the promotion of color management the pillars of its business, operating as a pioneer in the industry. Our market share is extremely high. We will continue to make further efforts for the development of color science and the creation of a prosperous society, and we hope to be of service to everyone.