PMB Series Platform Mounting Adjustment Base

• Platform size options: 25mm and 50mm.
• Compatible with mirror accessories of Ø0.5-2 inches.
• Angle range: ±4°.

Compared with conventional adjustment frames, a major advantage of the platform adjustment base is its ability to fix optical components of the same size as or larger than the adjustment frame.

Platform Mounting Adjustment Base
Model	PMB25	PMB50
Specification	25.4*25.4*21.2mm	50.8*50.8*22.9mm
Tabletop Size	24.6*24.6mm	49.3*49.3mm
Central Mounting Hole	Ø6.5mm	Ø6.5mm
Angle Range	±4°, Resolution 9.5mrad/rev	±4°, Resolution 9.5mrad/rev
Adjustment Screw	M4*0.25	M6*0.35
Tabletop Thread	/	4 places of M44, 1 place of M41 (countersunk hole)
Weight	19.6g	65.7g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy

 

Mirror Fixing Disc
Model	FD05	FD1	FD2
Specification	Ø13.8*10.8mm	Ø26.5*10.9mm	Ø53.0*11mm
Compatible Size	Ø0.5 inch	Ø1 inch	Ø2 inch
Screw Hole Type	1 place of M4*1	1 place of M4*1	1 place of M4*1
Weight	1.3g	3.1g	11.3g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy	7075 Aluminum Alloy

 

45° Mirror Fixing Base
Model	FM05	FM1	FM2
Specification	Ø16.0*17.3mm	Ø28.5*34.7mm	Ø55.0*53.4mm
Compatible Size	Ø0.5 inch	Ø1 inch	Ø2 inch
Screw Hole Type	1 place of M4*1	1 place of M4*1	1 place of M4*1
Weight	5.0g	30.0g	144.9g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy	7075 Aluminum Alloy

Technical Description

• Compared with conventional adjustment frames, a major advantage of the platform adjustment base is its ability to fix optical components of the same size as or larger than the adjustment frame. It provides ±4° angle adjustment driven by a 2mm hex key, with a resolution of 9.5mrad/rev.

• The adjustment base is equipped with two types of mirror adapters: the FD series is suitable for 0° mirror installation, while the FM series is suitable for 45° mirror installation. The adapter is connected to the adjustment frame through the central hole of the platform and locked in place by the set screw on the side. (Note: These adapters adopt a bonding fixation method; it is recommended to use UV glue for bonding, which needs to be purchased separately.)

• The side of the PMB series platform is provided with M4 countersunk holes, supporting installation via connecting rods for easy system integration.

Engineering Drawing