Skip To The Main Content
                             
 3D DHM

3D DHM

TR Scan


Trimos N° 700 405 30 21


Pack including

3D DHM pack-2

  • TRSCAN with 3 CNC Axes ( Z / X / Y )
  • DHMSx head and reference mirror ( only 1 head S1 or S2 or S3 )
  • 2 Screen TFT 19”
  • Workstation Dell with Windows Seven 64 bits Ultimate
  • Trimos Measurement and Trimos Analysis STT software

Application : Roughness and microtopography only on reflective parts
 
3D DHM application

Technical specifications for DHM

 

DHM

Digital Holographic Microscopy (DHM) is the generation of computer images of a sample using holographic techniques.

A hologram results from the interference between the object wave reflected from a sample and magnified by a microscope objective, and a reference wave.

Using a laser source, the small angle between the waves exhibits fringes that carry the phase and amplitude information in a single image - the hologram which is captured on a digital camera in a few microseconds.

The captured image is transmitted to a computer where numerical procedures are applied to reconstruct a 3D image of the sample. This process is called "image reconstruction".
The innovation of the DHM™ patented technology is the intervention of digital processing at a level that had not been reached so far in microscopy.

                         DHM s1 DHM s2 DHM s3

OPTICAL PROBE

DHMS1

DHMS2

DHMS3

Resolution in Z

0.1 nm

0.1 nm

0.1 nm

Resolution lateral (X/Y)

0.5 µm

0.6 µm

0.6 µm

Vertical range 1)

3 µm

7 µm

7 µm

Measuring area range X/Y

~250 µm x ~250 µm

~330 µm x ~330 µm

~330 µm x ~330 µm

Optical zoom

10x

7x

7x

Wavelenght Lambda 1

~850 nm

~760 nm

~760 nm

Wavelenght Lambda 2

~665 nm

~665 nm

~665 nm

 Working distance  ~6 mm  ~6 mm ~6 mm 
 Reflectivity of the sample  < 1% to 100 % < 1% to 100 %   < 1% to 100 %

1) values can vary, depending on the texture of the parts.