LS117 Optical Density Meter

Suitable for testing opalescent translucent materials

Visible light transmittance and optical density can be measured simultaneously
Measuring accurately, and ensure it can pass the inspection of Chinese national authoritative metrology institute

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LS117 densitometer features and operation

LS117 densitometer is an instrument that can measure both optical density and light transmittance. The instrument adopt the diffuse transmission principle which is suitable for the optical density test of opalescent translucent materials and frosted matte materials. The light source of the instrument complies with the CIE photopic luminosity function and can pass the inspection of Chinese national metrological institute.


Suitable for testing optical density of aluminized film, film, X-ray film, lens ink and other materials. The optical density meter is suitable for testing the light transmittance of opalescent translucent materials, matte materials.


Parameter Value
Light transmittance measurement accuracy ±1% (0%-50%)
±2% (50%-100%)
Light transmittance resolution 0.0005% (0%-10%)
0.005% (10% -100%)
Optical density measurement range 0.000OD-6.000OD
Optical density measurement accuracy ±0.02 (0-2.00OD)
±1% (2.00-4.00OD)
±2% (4.00-6.00OD)
Optical density resolution 0.001 OD (0.00-2.00OD)
0.01 OD (2.00-4.00OD)
0.1 OD (4.00-6.00OD)
Aperture 2mm
Light Source 380nm-760nm, conforming to CIE photopic luminosity function
Weight About 576g (without battery)
Power supply 4*AAA alkaline dry battery
Display 240*160 dot-matrixes LCD
Dimension 148mm×76mm×26mm (L*W*H)


High resolution, wide optical density measurement range

The optical density meter has wide measuring range. The optical density value can be measured to OD 6. The transmittance resolution is up to 0.005%

Light transmittance and optical density are measured simultaneously

During the test, the interface displays both the transmittance value and the optical density value of the material

Diffuse transmission light path design

The LS117 portable densitometer uses a diffuse transmission light path design, which has the same effect of the integrating sphere. There are relevant instructions in "GB / T 11500-2008 / ISO 5-2: 2001". The regulation has stated that “Use opale glass method instead of integrating sphere method as the basis of ISO standard diffuse transmission density"

High-precision and great accuracy

The light source complies with the CIE photopic luminosity function to ensure that it passes the testing of the Chinese Metrology Institute

Two measurement ways for more flexible to use

The optical density meter has two measurement methods which is more flexible to use.
Fixed measurement: It is more suitable for testing regular or smaller objects.
Hand-held measurement: take the probe down for testing, which is more suitable for irregular and large-volume materials

Pedestal measurement

Pedestal measurement

Field measurement

Field measurement

Qualifications and Standards

The LS117 Optical Density Meter conforms to the following standards: 

  1. JJF1225-2009 Calibration Specification for Transmittance Meter of Automobile

  2. JJG920-2017 Diffuse Transmission Visual Densitometers


Optical density meter operation video

Optical Density Meter measured the transmittance of negative film

Optical density meter measures ultra-low transmittance materials

Optical density meter measures the OD value of aluminum coating

Optical density meter measures the light transmittance of zirconia

Comparison between Linshang LS117 optical density meter and X-Rite

The difference between regular transmission and diffuse transmission materials and their light transmittance measurement demonstration


No. Description Quantity Unit
1 LS117 Optical Density Meter 1 pcs
2 AAA battery 4 pcs
3 User Manual 1 pcs
4 Black Flannelette 1 pcs
5 Calibration Report 1 pcs
6 Certificate / warranty card 1 pcs
7 Aluminum box 1 pcs
8 Packing box dimension 34*25*14 cm(L*W*H) 1 pcs
package dimension
package dimension

Light Transmission Meter Selection

More about Linshang transmission meter price, product model selection, parameter comparison and question

More details


  1. 1. The difference between LS117 and LS116

    LS116 is suitable for measuring the light transmittance of transparent and regular materials. The diameter of the tested material must be greater than 10mm;

    LS117 is mainly suitable for measuring the light transmittance of opalescent, frosted fog, diffuse transmission materials and low-transmittance materials (at the same time it can measure the optical density value).The diameter of the measured material should be greater than 2mm.

  2. 2. What is the maximum sample thickness that LS117 light transmittance meter can measure?

    The LS117 light transmittance meter (optical density meter) use a point light source. Generally speaking, the smaller the tested material thickness, the more accurate the test result. It is not recommended to measure materials with a thickness that more than 2mm.

  3. 3. How to calibrate LS117 and how often does it need to be calibrated?

    The LS117 light transmittance meter (optical density meter) has a real-time dynamic self-calibration function and does not require other tools such as standard films to assist in calibration. Without placing any material under test, as long as the instrument passes self-calibration and displays 100%, the light transmittance test can be performed. The instrument accuracy is also guaranteed to meet the factory standards.