AvianGroupUSA logo Avian Technologies LLC
P.O. Box 716
Sunapee, NH 03782-0716
603-526-2420 (office), 603-526-2729 (fax)

Goniometric (spectral)

Goniometric (photometric)


Gloss and Reflectance

Haze and Clarity

Online Systems
  Glossmeter GR-2
  Glossmeter GR-4
  Color CMTS-5000
  Color CMTS-5000T
  Hazemeter HMS-3
  Transmittance TM-100M


The Murakami Team
Murakami Products
Avian Technologies LLC
Murakami Corporate



The HM-150N is designed to measure total light transmittance, diffuse transmittance, and haze. It is ideally suited to make these measurements for light transmissible materials such as plastics, films, glass and liquid. Employing a double-beam system, highly accurate and repeatable transmittance and haze measurements can be realized.

Internal switchable filters tune the light source to the spectral characteristics of CIE standard photometric observer and CIE standard illuminant D65, but also the combination including CIE standard illuminant A. A personal computer is used for interface, calculation, and control. Several useful functions, such as average calculation, and output by printer are available. The instrument’s high resolution provides more stabilized data displaying the values up to two decimal points.

The HM-150N conforms to most national and international haze standards, including:

  • IS0 14782 Determination of haze for transparent materials
  • IS0 13468-1 Determination of the total luminous transmittance of transparent materials
  • ASTM D1003 Haze and Luminous Transmittance of Transparent Plastics (D1003 is approximated)


Measuring object

Light transmissible materials such as plastics, films, glass and liquid

Sample size

Sheets and the like50×50mm up to 150×180mm

FilmHolder(option) required

LiquidGlass Cell(10mm in Light path length-option) required

Measuring Light flux

Incident Port:Dia. 20mm, Light Flux:Dia. 14mm


0.01% in full scale

Measurement Item

Total light transmittance{Tt(τt)}, Diffuse transmittance

{Td(τd), Haze(haze Value) and Parallel light transmittance


Optical System

Conforms to ISO14782, JIS K7136 for haze measurement

ISO13468-1, JIS K 7361 for Total Transmittance

Approximating to ASTM D1003&JIS7105)

Spectral Characteristics

CIE standard photometric observer and CIE standard illuminant D65.

Light Source

Halogen Lamp with a dichromic mirror, 12 V/50W

Lamp Life 2000 hrs. Nominal


Switchable between A and D65


Silicone photodiode

Computer Interface

USB or RS-232




Approximately 13 kg

Power Requirement

100V to 220V±10V AC, 50/60Hz

© 2018 Avian Technologies LLC, all rights reserved.