Optical Power Meter for Testing Optical Power Integrity of Laser and LED Equipment


The Hioki 3664 is an optical power meter for measuring the optical power of a spatial light. It is ideal for testing the optical power of the laser light source and LED light source of audio and video equipment such as Blue-Ray and DVD recorders, drives, and copiers. The optional optical sensors for the power meter are interchangeable and their sensitivity can be adjusted independently.

Key Features

  • 4.5 digits and broad dynamic range with 0.01 dBm resolution
  • Automatic correction of sensor sensitivity using measurement wavelength input
  • Remote operation on a computer screen and data capture via a USB connection
  • Analog output function

Model No. (Order Code)

Note: This product cannot perform measurement alone. Please purchase an optional light sensor separately.
Use of Optical Sensor 9743/ 9743-10 that are exclusively for blue-violet optical lasers is not supported on earlier versions of Model 3664 (Version 1.01 or earlier). Download the Hioki 3664 Setup Utility to enable compatibility of the Optical Sensors with all versions of Optical Power Meter 3664.

Basic specifications

Accuracy guaranteed: 1 year
Measurement items Optical power (W, dBm)
Measurable wavelength Depends on optical sensor in use (option)
Measurable power Depends on optical sensor in use (option)
Accuracy ±0.7 % (±5 % in combination with the optional sensor)
Wavelength sensitivity compensation Can be set for every 1 nm, Automatic compensation for the sensor’s sensitivity
Display 19999 max. Display resolution: 0.01 dBm / 0.01 dB,
Measurement display unit: nW, μW, mW, dBm, dB
Analog output Depends on optical sensor in use (option)
(1 V approx. or 0.7 V approx. when the sensor calibration point input)
Functions Scaling, Relative measurement, Max. value/ Min. value/ Average-value display, Auto power save, Setting backup, Battery check
Interfaces USB 1.1 (Output measurement value and remote control)
Power supply LR6 (AA) alkaline batteries ×4, Continuous use : 60 hr (using with the 9742 optical sensor as correction input), or AC adapter 9445-02/-03, 1.6 VA max.
Dimensions and mass 85 mm (3.35 in) W × 160 mm (6.30 in) H × 35 mm (1.38 in) D, 270 g (9.5 oz) (without batteries)
Included accessories AC adapter 9445-02 ×1, Output cord L9094 ×1, Driver software (CD-R) ×1, LR6 (AA) alkaline batteries ×4, USB cable ×1, Strap ×1, Instruction manual ×1

Included accessories (1)

Options A (0)

For blue-violet optical lasers

Options B (0)