LS117 Optical Density Meter

LS117 Optical Density Meter


I. LS117 Optical Density Meter Introduction

Linshang 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 aluminized film, film, X-ray film, lens ink and other materials. The light transmittance test of opalescent translucent materials and frosted matte materials, such as zirconia, opalescent acrylic and so on. The light source of the instrument complies with the CIE photopic luminosity function and can pass the inspection of Chinese national metrological institute.

LS117 light transmission meter advantage video

Related knowledge of optical density: optical density, abbreviated as OD. It is defined as the logarithm of the ratio of incident light to transmitted light, or the logarithm of the light transmittance reciprocal. The calculation formula is OD = log10 (incident light / transmitted light) or OD = log10 (1 / light transmittance). Generally, when testing materials with very low light transmittance, it is difficult to compare the differences between the materials using the light transmittance value. The data will be more intuitive after converting into optical density values.

II. LS117 Optical Density Meter Parameters

Light transmittance 

measurement accuracy

±1% (0%-50%)
±2% (50%-100%)

Light transmittance 


0.0005% (0%-10%)

0.005% (10% -100%) 

Optical density 

measurement range


Optical density 

measurement accuracy

±0.02 (0-2.00OD)

±2% (2.00-6.00OD)

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)

light transmission meter
LS117 light transmission meter appearance

III. LS117 Optical Density Meter Characteristics

1. 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%.

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

optical density meter
two test data of LS117 optical density meter 

3. 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”.

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

5. The optical density meter has two measurement methods which is more flexible to use.

optical density meter measurement modes
two measurement methods of LS117 light transmittance meter

(1) Fixed measurement: It is more suitable for testing regular or smaller objects.

(2) Hand-held measurement: take the probe down for testing, which is more suitable for irregular and large-volume materials.

6. 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.

optical density meter test different materials
LS117 test optical density value

light transmittance meter
LS117 light transmittance meter test light transmittance

IV. LS117 Optical Density Meter Qualification and Standard

1. The LS117 Optical Density Meter conform to the following standard “JJF1225-2009 Calibration Specification for Transmittance Meter of Automobile”, “JJG920-2017 Diffuse Transmission Visual Densitometers”

2.  Calibration report

Calibration report

V. LS117 Optical Density Meter Operation Video 

No. Description Quantity Unit
1 LS117 Optical Density Meter 1 pcs
2 AAA battery  4 pcs
3 User Manual  1 pcs
4 Certificate / warranty card  1 pcs
5 Aluminum box  1 pcs

Packing box dimension
34*25*14 cm(L*W*H)

1 pcs

LS117 Optical Density Meter package
LS117 Optical Density Meter package

VII.LS117 Optical Density Meter After-Sales Service

  1. The meter has one-year warranty. If the instrument works abnormally, please send the whole instrument to our company for maintenance

  2. Provide users with spare parts and lifelong maintenance services

  3. Provide the users with the meter inspection service 

  4. Free technical support for long term

Manufacturer: Shenzhen Linshang Technology Co.,Ltd. Website: 

Service hotline: 0755-86263411 Email:

For more information about the Light Transmittance Meter  selection, please click article below for details

Light Transmittance Meter Selection and FAQ