LP540 Longpass Filter (T>95%@550-1200nm, OD5@200-530nm)
LP540 Longpass Filter (T>95%@550-1200nm, OD5@200-530nm)
In Stock.
Ships within 5 working days of order.
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- Wavelength: LP540 longpass filter optimized for yellow-green to NIR applications from 550-1200nm
- Spectral Features: Sharp cut-on at 540nm with >95% transmission above 550nm for superior signal clarity
- Optical Density: OD5 blocking from 200-530nm ensures deep rejection of shorter wavelengths
- Filter Dimension Availability: Multiple sizes available – contact us for custom dimensions and mounting options
Request Raw Data
Request Raw Data
You can request the raw transmission data from us.
Copy the link of the product page and send email to shop@syronoptics.com, you will get reply within 1 working days.
Shipment & Delivery
Shipment & Delivery
- Stocked products ship within 5 business days after order confirmation.
- Custom-made products typically ship within 4–8 weeks.
- Delivery times may be affected by holidays, customs clearance, or other unforeseen events.
- Tracking information becomes available 3–5 days after dispatch when the parcel is handed to the local courier.
- Some deliveries may require customer pickup. Please ensure your contact information is correct and respond promptly to courier communications.
- General international parcel shipping cost: USD 35 (for reference).
Return & Refund
Return & Refund
1. Eligible Products
Stocked (catalog) products with a unit price under USD 500 are eligible for return within 14 days after delivery.
Custom-made or non-stock items are not eligible for no-reason returns.
2. No-Reason Return (Buyer’s Remorse)
If you wish to return an item for reasons other than product defect or seller error:
- Please email shop@syronoptics.com to request a return authorization and return address.
- Buyer is responsible for all return shipping costs.
- Items must be unused, in original condition, and with original packaging.
- Refund will be issued after inspection of the returned item.
3. Seller’s Fault (Defective / Wrong / Damaged Item)
If the return is due to seller error (defective product, wrong item shipped, or damage during shipping):
Please provide clear evidence (photos or videos) showing the issue.
We will evaluate the case and either:
- Provide a replacement, or
Issue a refund (with or without requiring the item to be returned). - Return shipping cost will be covered by the seller in confirmed seller-fault cases.
4. Important Notes
- Returned items are subject to inspection before refund approval.
- Shipping fees, customs duties, and taxes are non-refundable unless the return is due to seller fault.
- Unauthorized returns will not be accepted.
Payment Terms
Payment Terms
Payments can be made online using Credit Card, Apple Pay, Google Pay, WeChat Pay, and Alipay.
If you prefer to pay by bank transfer, please contact shop@syronoptics.com to request an invoice with our banking details.
If you require deferred payment terms, you may request NET 7 or NET 30 at the time of placing your order.
All requests for deferred payment are subject to approval and will be confirmed by SyronOptics via email.
Custom Sizing
Custom Sizing
Custom sizing is available from 3 × 3 mm (or Ø5 mm) up to 60 × 60 mm. For custom cut sizes, please contact shop@syronoptics.com for a quotation.
Pricing is not significantly lower for small-size orders in low quantities due to operational costs.
SKU:
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| Specifications | |
|---|---|
Cut-On Wavelength |
540nm
|
Optical Density |
OD5
|
Part Number |
SO3040033
|
Curve |
|
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LP540 Longpass Filter - Fluorescence Microscopy
Fluorescence Microscopy
In biology and medical research, scientists use special dyes that glow to see tiny cell structures. This filter is perfect because it acts as a wall that completely blocks the harsh blue or green light used to "excite" or wake up the dye, while allowing the much dimmer yellow, red, or infrared glowing light from the actual sample to pass cleanly into the camera.
Recommended light source:
- Blue or Green LED light source: They provide strong, focused energy to make the samples glow, and because their light is strictly under 530nm, the filter will perfectly block them from blinding the camera.
- Broadband Xenon Arc light source: This produces a massive amount of bright light across all colors; when paired with an initial filter that only lets blue/green out to hit the sample, the LP540 acts as the perfect secondary shield for the camera.
-
LP540 Longpass Filter - Industrial Machine Vision
Industrial Machine Vision
Factories use automated cameras to inspect products for flaws on fast-moving assembly lines. By putting this filter over the camera lens, it blocks out all the bright, scattered blue and green ambient lighting in the factory. This allows the camera to only see the specific red or infrared lights used to illuminate the product, completely removing background glare and shadows.
Recommended light source:
- Red LED light source: Red light (typically around 630nm) passes almost perfectly through this filter, meaning the camera gets a highly efficient, bright image of the product without wasting any of the light's energy.
- Near-Infrared (NIR) LED light source: Invisible to the human eye but easily seen by cameras, NIR light (like 850nm) passes right through this filter and is fantastic for seeing through dark plastics, checking liquid levels, or inspecting food quality.
