분광 밀도 계기

분광광계의 색도계의 광택 미터, 안개 미터, 코팅 두께 미터, 창문 색깔 미터, UV 미터, Leeb 경도 테스터, 빛 부스, 색깔 시험 차트, 초음파 두께 게이지.Threenh 기술 회사는 다양한 측정 장치의 독립적인 설계, 연구 개발, 생산 및 판매를 준수합니다.

The LAB color space defines colors in a three-dimensional model: Lightness (L), red–green axis (a), and blue–yellow axis (b). It's a globally recognized standard supported by most modern color measuring devices. CIELAB is a standardized, device-independent system designed to map all visible colors that the human eye can perceive.

The LAB color space uses three values to define any color, each representing a specific dimension:

L (Lightness): Ranges from 0 to 100. It measures the brightness of the color, where 0 is pure black and 100 is pure white.
A (Red-Green Axis): Ranges from approximately -128 to +127. Positive values represent red tones, while negative values represent green tones.
B (Yellow-Blue Axis): Ranges from approximately -128 to +127. Positive values represent yellow tones, while negative values represent blue tones.

그래요그러나 산업 표준을 충족시키기 위해 LED 리트로피팅을 위해, 색상 교정 된 LED 모듈은 정확한 색상 렌더링을 위해 사용되어야합니다. 우리는 일반적으로 고객이 색상의 정확성에 영향을 미치고 불필요한 손실을 일으킬 수 있기 때문에 스스로 수정하도록 권장하지 않습니다.

When detecting color differences, the first factors to consider when selecting a light source include its stability, directionality, lifespan, and the effectiveness of the ultimately obtained spectral curve. The illuminant of a colorimeter is a fixed bulb, such as a tungsten lamp，LED light or a long-life xenon lamp. However, for the same color sample, the results displayed by the instrument vary under different light sources. This is because different light sources cause different absorption and reflection of light on the sample, leading to differences in how both the human eye and the instrument perceive the color.

In general, the D65 light source is used in the application of coil steel inks for construction. The D65 light source is equivalent to average daylight. Most coil steel inks for construction are used outdoors, and sunlight is regarded as the standard light source in outdoor environments. For household appliance coil steel inks, due to their usage characteristics, they are mostly used indoors. Therefore, the A standard light source is adopted for color measurement of samples based on indoor lighting conditions. The A light source is a carefully specified tungsten light source. Other light sources, such as fluorescent light sources, can be used in many types of applications. For example, some textile factories use fluorescent light sources. Therefore, a reasonable light source should be selected as the mutually recognized measurement method based on actual usage conditions and user requirements. Once agreed upon by both parties, color measurement must be conducted under the same conditions. This helps reduce unnecessary systematic errors and human errors, achieving the optimal consistency in color measurement.

The 3nh high-precision spectrophotometric colorimeter adopts a combined LED light source with long lifespan and low power consumption, which includes UV (ultraviolet) and UV-excluded options. This design can meet the color difference detection needs of different users and supports the selection of multiple light source modes.

색상 측정의 원칙은 색깔이 있는 溶液에 의해 흡수되는 빛의 강도가 흡수하는 종의 농도와 경로 길이에 비례한다고 말하는 Beer-Lambert의 법칙입니다.특정 파장에서 흡수되는 빛의 범위를 측정합니다.

표본의 L*a*b 값과 참조를 교정 된 분광광계나 색도계로 기록하십시오.ΔE를 사용하여 색상의 차이를 계산합니다.델타 E가 낮을수록 결과가 더 정확합니다.에너지의 차이점, ΔE < 1, is generally assumed to be invisible to the eye.