1. Camera Filters On Sale
  2. sku: 16469876153706633
  3. MIDOPT LP1070-37.5

MIDOPT LP1070-37.5 Midwest Optics Wave Infrared Longpass Filter

Lp1070-37.5 Midopt Midwest Optics Lp1070 Short-wave Infrared Longpass Filter

( Brand: Midopt ), ( Manufacturer Part Number: LP1070-37.5 ), ( Part Type: Filter Short ), ( Filter Effects: Infrared )

Review MIDOPT Midwest Optics Lp1070 Short wave Infrared Longpass Filter

The **Midopt Midwest Optics LP1070-37.5** is a high-performance **short-wave infrared (SWIR) longpass filter** engineered for precision optical applications requiring strict spectral control in the near-infrared and shortwave infrared regions. Designed with a **cut-on wavelength of 1070 nm**, this filter effectively blocks all light below this threshold while transmitting wavelengths longer than 1070 nm with minimal absorption, making it ideal for imaging, spectroscopy, and laser-based systems where spectral purity is critical. Constructed from **optically polished glass substrates** with a durable, multi-layer dielectric coating, the LP1070-37.5 ensures consistent performance across a broad spectral range, from approximately 1070 nm to beyond 2000 nm, with an **optical density (OD) of 4 or greater** at wavelengths shorter than the cutoff guaranteeing near-complete rejection of stray or unwanted radiation. The filter s **37.5 mm diameter** provides ample clear aperture for most standard optical setups, including cameras, sensors, and telescopes, while its **thin profile** minimizes bulk without compromising structural integrity. Suitable for use in **harsh environments**, including industrial, aerospace, and scientific research applications, the LP1070-37.5 is coated with an **anti-reflective (AR) layer** on both surfaces to reduce surface reflections and maximize throughput in the transmission band. Whether integrated into a **SWIR camera system, laser protection setup, or high-precision spectroscopic analyzer**, this filter delivers exceptional spectral fidelity, low polarization sensitivity, and long-term stability, making it a reliable choice for demanding optical filtering requirements.

### **Pros and Cons of buying a MidOpt LP1070-37.5 (Short-Wave Infrared Longpass Filter)**

#### **Pros:**

1. **High Optical Quality** MidOpt is a reputable manufacturer known for precision optical coatings and minimal distortion. The LP1070-37.5 is designed for high transmission in the near-infrared (NIR) and short-wave infrared (SWIR) ranges while blocking visible and longer wavelengths, making it suitable for applications requiring clean spectral separation.

2. **Specific Wavelength Cutoff** The 1070 nm cutoff is useful for applications where visible light must be blocked while allowing SWIR or NIR light to pass. This is particularly valuable in:

- **Thermal imaging** (where blocking visible light reduces glare and improves contrast).

- **Medical imaging** (e.g., fluorescence imaging, where specific NIR wavelengths are isolated).

- **Astronomy** (for blocking ambient light while capturing SWIR signals).

- **Security and surveillance** (where IR-sensitive cameras need to avoid visible light interference).

3. **Durable and Stable Coating** MidOpt s coatings are designed to resist environmental factors like moisture, dust, and temperature fluctuations, ensuring long-term performance.

4. **Compatibility with Common Optical Systems** The filter s dimensions (37.5 mm) make it suitable for standard optical mounts, lenses, and filter holders, reducing the need for custom adaptations.

5. **Cost-Effective for Specialized Applications** While not the cheapest filter on the market, it offers a balance between performance and price for users who require a reliable SWIR longpass filter without investing in high-end research-grade optics.

---

#### **Cons:**

1. **Limited Visible Light Blocking** The LP1070-37.5 is optimized for SWIR/NIR applications but may not provide perfect blocking of all visible light, especially near the cutoff region (900 1100 nm). Users requiring stricter visible rejection (e.g., for high-contrast imaging) may need additional filters or bandpass combinations.

2. **Potential for Reflection and Ghosting** Like all optical filters, it may introduce some back-reflection or ghosting, which could affect image quality in high-precision applications. Anti-reflection (AR) coatings can help, but they may increase cost.

3. **Size Constraints** The 37.5 mm diameter limits its use in compact or space-constrained systems. Smaller or larger formats may be required for certain applications.

4. **No Built-in UV Blocking** If the application involves UV light, additional filters will be needed, as the LP1070-37.5 does not inherently block UV wavelengths.

5. **Requires Proper Alignment** Like any optical component, misalignment or improper mounting can degrade performance. Users must ensure precise installation to avoid vignetting or uneven light transmission.

---

### **Conclusion and Recommendation**

The **MidOpt LP1070-37.5** is a **high-quality, reliable longpass filter** well-suited for applications requiring the isolation of SWIR/NIR light while blocking visible wavelengths. It excels in **thermal imaging, medical diagnostics, astronomy, and security systems** where a clean spectral cutoff is critical.

**Recommendation:** - **Buy if:**

- You need a **cost-effective, mid-range filter** for SWIR/NIR applications where visible light rejection is a priority.

- Your system can accommodate the **37.5 mm size** and requires minimal additional filtering.

- You prioritize **optical clarity and durability** over ultra-narrowband performance.

- **Consider alternatives if:**

- You need **perfect visible light blocking** (e.g., for high-contrast imaging), in which case a **shortpass filter or bandpass combination** may be better.

- Your budget allows for **custom or research-grade filters** with tighter specifications.

- You require **UV blocking**, as this filter does not address that range.

For most **general-purpose SWIR/NIR applications**, the **MidOpt LP1070-37.5 is a solid choice** that balances performance and affordability. However, always verify compatibility with your specific optical setup before purchasing.

Details:

All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct. Because silicon is inherently opaque, blocking in the visible and very near-IR spectrum's excellent, positioning of cut-on slope completely insensitive to angle incidence light impinging on surfaces. LP1070 also reduces Nd:YAG 1064nm light transmission by approximately 50%. Very lightly used - purchased for a prototype that was tested few weeks.

No scratches on either side of optic - excellent condition. Typically $259 new. Manufacturer: The MidOpt LP1070-37.5 is a 0.7mm thick silicon longpass filter with anti reflection coatings on both sides, optimized for 1100-2300nm transmission.

part #: lp1070375 price

  • $125.00

specifications filtecam:

  • brand: Midopt
  • mpn: Lp1070-37.5
  • part type: Filter Short
  • filter effects: Infrared

seller filtecam:

  • rating: 100.0%
  • # reviews: 314
  • city: Broomfield, Colorado

shipping filtecam:

  • service: USPS Ground Advantage
  • carrier: USPS
  • type: Calculated
  • transit: 4-9 Days
  • class: Standard
  • cost: $0.00

payments filtecam:

  • credit card: Discover
  • wallet: Paypal
  • other

returns filtecam:

  • policy: No Returns

offer filtecam:

  • quantity: 1
  • availability: In Stock
  • sold: 0
  • started: May 28, 2026
  • options: Ship-to-home

general filtecam:

  • condition: Used
  • Cameras Photo > Lenses Filters > Filters
part type: filter short, filter effects: infrared,
category: camera & photo > cameras photo > lenses filters > filters, sku: 16469876153706633,
Midopt LP1070-37.5 Is Similar To:
filtecam logo
1 offer $125.00 USD
  • Used. Offer #1 priced at $125.00 + $0.00 shipping estimate = $125.00* total. The MidOpt is a 0.7mm thick silicon longpass filter with antireflection coatings on both sides, optimized for 1100-2300nm transmission.FREE SHIPPING

Copyright © filtecam.com