DOI HAZE GLOSS METER

About DOI HAZE GLOSS METER

As a Authorized dealer we are engaged in providing the broad assortment of wide gamut of optical instruments . The Elcometer 408 provides the very latest in gloss measurement technology, providing accurate gloss, haze and distinctiveness of image (DOI) analysis in a single reading.

Accurate

Distinctness of Image (DOI)

 

• Distinctness of Image measures the sharpness of a reflected image in a coating surface. Similar coatings may have identical gloss values but visually the quality may be very different. A visually poor coating may have a highly textured dimpled appearance known as "orange peel". When a reflected object is viewed in such a coating the image becomes fuzzy and distorted.
• A surface that has a perfect undisorted images returns a value of 100. As the value decreases the image becomes more distorted.

 

Reflected Image Quality (RIQ)

 

• Reflected Image Quality provides greater sensitivity when evaluating highly reflective coatings and the specular / diffuse element of lower gloss materials.
• A surface that exhibits a perfect undistorted image returns a value of 100, as the values decrease higher surface texture is present and the image sharpness reduced.

 

Goniophotometric Profile

 

• The gloss, haze, DOI and Rspec values produced by the Elcometer 408 can be used to assess the visual quality of any surface. The full range of goniophotometric curves can be downloaded to a computer for detailed understanding of specular reflectance. The Elcometer 408 can also be used to quantify an orange peel finish or a substandard coating with a low DOI.

 

Peak Reflectance (Rspec)

 

• Rspec is the peak reflectance measured over a very narrow angle in the specular direction and is very sensitive to any surface texture, waviness or rippling. When Rspec is equal to the gloss the surface is smooth. Rspec drops as the surface texture increases.

 

Haze (HU) & Log Haze (HULog)

 

• High quality gloss surfaces have a clear, deep, brilliant finish. Haze causes a drop in reflected contrast and causes halos to appear around light sources, these unwanted effects dramatically reduce visual quality.
• Undetectable by traditional gloss meters the Elcometer 408 measures Haze Units in accordance with ASTM E430 at the same time as simultaneously measuring gloss and DOI. 

 

Gloss (GU)

 

• A simple measurement proportional to the amount of light reflected from a surface determining how shiny a surface appears.
• Surface texture can reduce appearance quality, without affecting gloss. These two test panels have identical readings when measured with a standard glossmeter. 

 

Advanced Surface Quality Analysis

This meter allows measurement of gloss, DOI, and haze by leveraging reflectometry and haze photometry. With single and multi-angle gloss modes, you get comprehensive insights into surface quality, supporting industries like automotive and coatings. Accurate results are delivered through digital touch control and an intuitive LCD interface.


Precision and Compliance Assured

Engineered to comply with ASTM D523 and ISO 2813 standards, this device ensures reliable and reproducible testing. The self-calibration function maintains instrument accuracy, while the precision aperture and stable LED light source guarantee consistency across measurements.


Optimized for Versatility and Ease of Use

Designed as a table-top, automatic system weighing 15 kg, the meter accommodates specimen sizes up to 100 mm x 50 mm with adjustable strokes and widths. Its digital controls, quick response time, and robust data managementincluding USB and RS232 outputsstreamline operation for both laboratory and industrial workflows.