THORLABS FELH0500 Longpass Filter Wavelength 25.0
( Brand: Thorlabs ), ( Manufacturer Part Number: FELH0500 ), ( Type: Longpass Filter ), ( Unit Type: Unit ), ( Country Of Origin: United States )
Review THORLABS 25.0mm Longpass Filter Cut on Wavelength 500 Nm
The Thorlabs FELH0500 25.0 Longpass Filter is a high-quality optical component designed for precise wavelength selection in the visible spectrum. This filter is specifically engineered to allow light with a wavelength longer than 500 nm to pass through while blocking shorter wavelengths, making it ideal for applications that require the rejection of light below 500 nm.
The FELH0500 Longpass Filter has a thickness of 25.0 mm, providing sufficient optical path length for effective light attenuation. It is made of high-quality optical glass, ensuring excellent transmittance and low absorption. The filter's surface is coated with a multilayer antireflection coating, minimizing reflections and maintaining optimal light transmission.
The cut-on wavelength of 500 nm ensures that the filter is effective in blocking out light in the blue spectrum, making it suitable for applications such as fluorescence microscopy, where one wants to block the excitation light and only observe the fluorescent light emitted by the sample. The filter's high transmission in the longer wavelengths allows for clear visualization of the fluorescent signals.
In summary, the Thorlabs FELH0500 25.0 Longpass Filter is a reliable and efficient optical filter for blocking out blue light and allowing longer wavelength light to pass. Its high quality construction, combined with its specific cut-on wavelength, makes it an essential tool for a wide range of applications in the field of optics and photonics.
Thorlabs FELH0500 25.0 Longpass Filter: Pros:1. High quality: Thorlabs is a well-respected manufacturer known for producing high-quality optical products.
2. Cut-on wavelength: The filter has a cut-on wavelength of 500 nm, making it ideal for applications that require the transmission of wavelengths longer than 500 nm and the rejection of shorter wavelengths.
3. High optical density (OD): The filter has an OD of 2.5, which means it can effectively block out a significant amount of light below 500 nm.
4. Low absorption: The filter has low absorption in the transmission range, ensuring minimal loss of desired wavelengths.
5. Durable: The filter is made of Schott B260 glass, which is known for its excellent durability and chemical resistance.
Cons:1. Price: The filter is relatively expensive compared to some other filters on the market.
2. Limited transmission range: The filter is designed to transmit wavelengths longer than 500 nm and block wavelengths shorter than 500 nm. This may not be suitable for applications that require transmission of a wider range of wavelengths.
3. Thickness: The filter is 25.0 mm thick, which may be too thick for some applications that require a thin optic.
Ending conclusion:The Thorlabs FELH0500 25.0 Longpass Filter is a high-quality product that is well-suited for applications requiring the transmission of wavelengths longer than 500 nm and the rejection of shorter wavelengths. However, its high price, limited transmission range, and thickness may make it unsuitable for some applications.
Recommendation:If you need a longpass filter with a cut-on wavelength of 500 nm, the Thorlabs FELH0500 25.0 Longpass Filter is a good choice. However, if you are looking for a more cost-effective solution or require a filter with a different transmission range, you may want to consider other options on the market. It is recommended to compare multiple products and their specifications before making a purchase decision.
Details:
Warranty This item is guaranteed to be as described. This unit will arrive in the condition shown. THORLABS FELH0500 25.0mm LONGPASS FILTER, CUT-ON WAVE length : 500 nm: This lot is for one Thorlabs mm Longpass Filter, Cut-On Wave length . This is the lens only, there no frame present.
Power cords and power adapters are never included unless specifically mentioned. Orders are shipped to the cardholders billing address. Shipping Buyer pays for all shipping costs.
part #: felh0500 price
- $79.99
specifications linactuat:
- brand: Thorlabs
- mpn: Felh0500
- type: Longpass Filter
- unit type: Unit
- country of origin: United States
returns linactuat:
- policy: No Returns
payments linactuat:
- other
- credit card: Visa
- wallet: Google-pay
seller linactuat:
- rating: 100.0%
- city: Las Vegas, Nevada
- # reviews: 7425
general linactuat:
- Industrial Automation Motion Controls > Rotary Linear Motion > Other Rotary Linear Motion
- condition: Used
shipping linactuat:
- class: Standard
- type: Calculated
- cost: $6.40
- transit: 4-7 Days
- carrier: USPS, UPS
- service: USPS Ground Advantage, UPS Ground
offer linactuat:
- options: Ship-to-home
- quantity: 1
- availability: In Stock
- sold: 0
- started: November 14, 2025
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