What products are listed on opticaltable.com?

opticaltable.com lists product families including optical tables, air bearing platform series, air-bearing vibration isolation optical platforms, pendulum rod type vibration isolation optical platforms, comprehensive application workbenches, vibration isolation tabletop platforms, damping material vibration isolation platform series, solid rubber vibration isolation optical platforms, hollow cone vibration isolation optical platforms, vehicle-mounted optical platforms, rigid platform series, motorized translation stages, motorized lift stages, motorized rotation stages, motorized angular positioning stages, motorized multi-axis combined stages series, manual translation stages series, manual lift stages, manual angular positioning stages, manual tilt stages, manual rotation stages, optical bench series, fiber optic accessories series, magnetic bases series, helium-neon laser series, and optical accessories.

Which application sectors are named on the website?

The website states that its technology portfolio has applications across lasers, photonics, semiconductor fabrication, advanced materials, aerospace, and biomedicine.

What service methods are described on the website?

The website describes quality assurance, customization for each client's application scenario, pre-sales consultation, post-sales follow-up, and ongoing service improvement.

How can customers contact LeadTop through the website?

The website lists the contact email sales@opticaltable.cn, the phone number +86 791 88224426, and a contact form at https://www.opticaltable.com/pages/contact-us.

Which named projects appear on the homepage?

The homepage lists ZDT100-40 Shanghai Institute of Technical Physics, ZDT79-30 Shanghai Institute of Optics and Fine Mechanics, GZT75-57 Chengdu Optoelectronics Institute Handan Base, ZDT75-30 Shanghai Institute of Technical Physics, and ZDT100-80 Suzhou University.

Sep.2026 30

Lab Vibration Isolation Selection Comparison Table: LeadTop LDT Parameters · Scenarios · Configuration Essentials

Introduction

This paper compares key parameters and applicable scenarios of LeadTop’s passive, pneumatic and active isolation tables. It lists configuration checklists, common mistakes and FAQs, offering practical guidance for selecting proper vibration‑isolation equipment for varied laboratory instruments.

Details

Core Parameter Comparison Table (Quick Reference at a Glance)

Parameter	Passive isolation table (POT-G)	Pneumatic isolation table (ZDT-P)	Active isolation system (TA)
Isolation principle	Passive absorption by rubber/cone	Air-spring laminar damping	Active feedback with sensors + actuators
Natural frequency (vertical)	4–8 Hz	1.0–2.0 Hz	< 1 Hz
Isolation efficiency @10Hz	85%–90%	95%	95%–99%
Low-frequency (<5Hz) performance	Almost ineffective	Some effect	Highly effective
Tabletop flatness	0.05–0.1 mm/m²	0.05–0.1 mm/m²	0.05–0.1 mm/m² (tabletop)
Hole spacing	25 mm (M6)	25 mm (M6)	25 mm (M6)
Load capacity	200–2000 kg	300–3000 kg	100–1500 kg
Supporting requirements	None	Quiet air compressor	Controller + power
Installation difficulty	Low	Medium	High (factory commissioning)
Price range	RMB 10,000–30,000	RMB 30,000–40,000	RMB 70,000+

https://vibrationreduce.com/product/pot-g/

Parameters are based on LeadTop LDT public technical documentation; the ZDT-B pendulum-rod pneumatic table achieves isolation efficiency up to 99%.
The ZDT-B series of air-floating pendulum rod type optical platforms.

Scenario × Configuration Comparison Table

Lab scenario	Equipment vibration tolerance	LeadTop LDT recommendation	Key configuration points
Undergraduate teaching	No explicit requirement	POT passive isolation table	Standard size, maintenance-free
Metallurgical / ordinary confocal	< 100 μm/s	POT-G / entry-level ZDT-P	Watch compressor noise
Research-grade confocal	< 20 μm/s	ZDT-P pneumatic isolation table	Flatness ≤ 0.05, good static performance
Fluorescence spectroscopy	< 20 μm/s	ZDT-P pneumatic isolation table	Thickened tabletop reduces vibration
Laser interferometer	< 5 μm/s	ZDT-B high-end pneumatic / TA active	Needs low-frequency isolation capability
SEM / TEM	< 2 μm/s	TA series / LVH-T15 active	Six DOF, assessment mandatory
Semiconductor inspection	Heavy load	Heavy-duty pneumatic / TA	Load capacity + rigidity first
Metrology & quality inspection	< 5 μm/s	ZDT-B high-end pneumatic	Flatness ≤ 0.02

Configuration Essentials Checklist

[ ] Vibration tolerance: check the equipment manual or estimate from the table above.
[ ] Lab floor: 4th floor and above → pneumatic/active first.
[ ] Size: only slightly larger than the equipment; too large raises the natural frequency.
[ ] Load capacity: equipment + fixtures + 20% margin.
[ ] Hole spacing: 25 mm × 25 mm (M6) is standard; special requires customization.
[ ] Supporting: confirm the pneumatic table includes a quiet air compressor (< 55 dB).
[ ] Installation: confirm active systems include factory commissioning.
[ ] Acceptance: write into the contract (flatness / natural frequency / report).
[ ] Assessment: high-rise / precision scenarios → do a vibration spectrum assessment first.

Common Configuration Errors

Error	Consequence	Correct approach
Small equipment on a large tabletop	Unloaded natural frequency rises	Calculate the full-load frequency from the equipment weight
Only looking at the natural frequency	Resonance peak amplifies a frequency band	Ask for the complete isolation efficiency curve
Passive table in a high-rise	Low-frequency vibration not isolated	At least pneumatic + on-site assessment
Ignoring compressor noise	Disturbs the lab environment	Choose a quiet type < 55 dB or place it outside
Active table sensors placed arbitrarily	Can amplify vibration	Require the manufacturer's layout plan + report

FAQ

Q: Which parameters matter most for an isolation table?

A: Four cores — ① natural frequency (the lower, the better it isolates low frequencies; LeadTop LDT ZDT-P pneumatic 1.0–2.0 Hz, TA active < 1 Hz); ② isolation efficiency curve (see from which Hz it becomes effective); ③ tabletop flatness (precision type ≤ 0.02 mm/m²); ④ load capacity and size. Low natural frequency + early curve onset + good flatness usually means a good table.

Q: What are the parameter differences between pneumatic and active tables?

A: Pneumatic tables (e.g., ZDT-P) have a natural frequency of 1–2 Hz and isolate well above 5 Hz, but efficiency is relatively low at 1–4 Hz; active tables (e.g., TA) have a natural frequency < 1 Hz and are effective across the full 1–200 Hz band, handling the ultra-low frequencies that pneumatic tables cannot isolate. If the tolerance is > 5 μm/s, pneumatic is enough; < 2 μm/s (SEM/TEM) requires active.

Q: Is the difference between 0.05 and 0.02 tabletop flatness significant?

A: For ordinary optical experiments, 0.05 mm/m² is enough; for interferometry and precision metrology, an uneven tabletop introduces optical path errors and requires ≤ 0.02 mm/m². The higher the precision requirement, the tighter the flatness specification must be.

Q: How do I quickly decide which one to buy?

A: Teaching/demo → passive (POT); precision optics/microscopy → pneumatic (ZDT-P/ZDT-B); SEM/TEM/interferometer → active (TA/LVH-T15). Then consider the floor (don't use passive in a high-rise) and the budget (active is the most expensive). If unsure, do a vibration assessment first.

LeadTop LDT | Optical Isolation & Micro-Vibration Control Solutions | Product Center: https://www.opticaltable.cn/shop/

LeadTop LDT Lab Vibration Isolation Solution Design: Vibration Assessment + Selection + Installation — One-Stop Service