THORLABS NE02B Unmounted Absorptive Filter Optical Density

( Brand: Thorlabs ), ( Part Type: Filter ), ( Manufacturer Part Number: NE02B )

Review THORLABS Unmounted Absorptive Nd Filter Optical Density

The Thorlabs NE02B Unmounted 25 mm Absorptive ND Filter is an essential accessory for any optics laboratory or photography setup that requires neutral density filtration. This filter is specifically designed to attenuate light while maintaining a neutral color balance, making it an ideal choice for applications where consistent color rendition is crucial.

The NE02B filter is available in various optical densities ranging from 0.1 to 5.0, ensuring that users can find the right level of light attenuation for their specific applications. The optical density (OD) of this filter refers to its ability to reduce the amount of light passing through it. For instance, an OD of 1.0 reduces the light intensity by a factor of 10, while an OD of 2.0 reduces it by a factor of 100.

This unmounted filter features a 25 mm diameter and is made of Schott B270 glass, which is known for its excellent optical quality. The absorptive nature of this filter means that it uses chemical absorption to reduce light, making it an effective solution for applications where polarization or color separation is not required.

The NE02B filter is also scratch-resistant, ensuring that it can withstand routine handling and use without the risk of incurring damage. The filter is supplied in a protective paper packet to maintain its pristine condition until it is ready to be used.

To install the NE02B filter, it can be placed in front of an optical system or camera lens using a filter holder or mount. The absence of a mount makes it a versatile solution for those who already have a filter holder or prefer to use their setup without one.

In summary, the Thorlabs NE02B Unmounted 25 mm Absorptive ND Filter is a high-quality, neutral density filter that offers excellent light attenuation and consistent color rendition. Its unmounted design makes it a versatile solution for various applications, while its scratch-resistant construction ensures durability and longevity.

Pros and Cons of Buying Thorlabs NE02B Unmounted 25mm Absorptive ND Filter

The Thorlabs NE02B is an unmounted 25mm absorptive neutral density filter. This filter is designed to reduce the amount of light passing through it while maintaining a neutral color balance. In this analysis, we will discuss the potential advantages and disadvantages of purchasing a Thorlabs NE02B filter.

1. High Optical Density: The filter offers an optical density (OD) of 2.5, which is ideal for significantly reducing the amount of light in various applications, such as high power laser systems, microscopy, and photometry.

2. Broadband Transmission: The filter exhibits a broadband transmission spectrum, meaning it can be used with various light sources, including visible, UV, and IR wavelengths.

3. Reduces Glare and Reflections: By absorbing a large portion of the incident light, the NE02B filter minimizes glare and reflections, which can improve image quality and contrast in certain applications.

4. Durable Construction: The filter is made of Schott BK7 glass, ensuring excellent optical quality and durability.

5. Cost-Effective: Compared to other high-density filters, the NE02B is relatively affordable, making it an attractive option for researchers, students, and hobbyists.

1. Absorptive Filters Introduce Heat: Since the filter absorbs a significant amount of light, it can generate heat, which may impact temperature-sensitive components or samples in certain applications.

2. Limited Light Transmission: As an absorptive filter, the NE02B only transmits a small percentage of the incident light, which might be a concern for applications requiring high light levels.

3. Potential for Image Degradation: Absorptive filters can introduce distortions or image degradation due to the absorption of light. This may be a concern for high-resolution imaging applications.

4. Custom Mounting Required: The NE02B is an unmounted filter, meaning that users must purchase and install their own filter mounts, which can add to the overall cost and complexity of the system.

The Thorlabs NE02B unmounted 25mm absorptive ND filter offers several advantages, including high optical density, broadband transmission, and durability. However, it also presents some disadvantages, such as the potential for heat generation, limited light transmission, and the need for custom mounting.

Based on this analysis, the Thorlabs NE02B filter is an excellent choice for applications where a high optical density filter is required, and the potential disadvantages, such as heat generation and limited light transmission, can be mitigated through proper system design and implementation. In conclusion, the NE02B filter is a cost-effective solution for researchers, students, and hobbyists seeking to significantly reduce the amount of light in their optical systems.

Details:

Shipped with USPS Ground Advantage. Condition is New. Thorlabs NE02B - Unmounted 25mm Absorptive ND Filter, Optical Density.

part #: ne02b prices

• $30.00-$35.00

specifications detectoimage:

• brand: Thorlabs
• part type: Filter
• manufacturer part number: NE02B

general detectoimage:

• condition: New
• Test, Measurement Inspection > Cameras Imaging > Other Cameras Imaging

payments detectoimage:

• other
• wallet: Google-pay
• credit card: Diners-club

returns detectoimage:

• policy: No Returns

seller detectoimage:

• rating: 100.0%
• # reviews: 2085
• city: San Mateo, California

offer detectoimage:

• availability: In Stock
• sold: 0
• started: October 9, 2025
• quantity: 2
• options: Ship-to-home

shipping detectoimage:

• carrier: USPS
• transit: 6-9 Days
• type: Fixed
• class: Standard
• service: USPS Ground Advantage
• cost: $6.00

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