II-VI INCORPORATED 208685 Infrared Znse Lens Plano Convex Et Plano/convex 1.5 Dia. 3.75 .300

( Brand: Ii-vi Incorporated ), ( Part Type: Len ), ( Manufacturer Part Number: 208685 )

Review II VI INCORPORATED Infrared Mounted Znse Lens Plano/convex 1.5 Inch Dia. 3.75 Fl Et .300

The II-VI 208685 infrared ZnSe lens is a high-performance, plano-convex optic component designed for use in various industrial, scientific, and military applications. This lens is made of Zinc Selenide (ZnSe), a versatile and reliable material in the infrared spectral range.

The plano-convex design of the lens signifies that one side of the lens is flat (plano), while the other side is curved (convex). This specific lens features a 1.5 focal length and a 3.75 effective focal diameter. The flange-to-flange length is 300 millimeters, providing sufficient space for integration into various optical systems.

The refractive index of the ZnSe material used in this lens is 2.42 at a wavelength of 1 micron, ensuring excellent light transmission and minimal dispersion in the near-infrared region. This lens's high transparency in the 1-5 m spectral range makes it an ideal choice for applications such as infrared imaging, spectroscopy, and laser systems.

1. Material: Zinc Selenide (ZnSe)

2. Shape: Plano-convex

3. Focal length: 1.5 meters

4. Effective focal diameter: 3.75 meters

5. Flange-to-flange length: 300 millimeters

6. Operating wavelength range: 1-5 m

7. Refractive index at 1 m: 2.42

8. High transparency and minimal dispersion in the near-infrared region.

The II-VI 208685 infrared ZnSe lens's precise manufacturing and rigorous quality control processes ensure consistency and reliability in optical performance. This lens is delivered with a protective coating to maintain its high-performance characteristics and extend its operational life.

Pros and Cons of Buying II-VI 208685 Infrared ZnSE Plano-Convex Lens (1.5, 3.75 fl, ET300)

The II-VI 208685 Infrared ZnSE Plano-Convex Lens with a focal length of 3.75 feet and an effective focal length of 3 inches (ET300) is designed for infrared applications. This lens is made of Zinc Selenide (ZnSe), which is known for its excellent infrared transmission properties. In this discussion, we will explore the potential advantages and disadvantages of purchasing this specific II-VI infrared lens.

1. Superior Infrared Transmission: Zinc Selenide (ZnSe) material is an excellent choice for infrared applications due to its high transparency in the near-infrared region. This lens is expected to provide excellent transmission in the infrared spectrum.

2. Flat Field: The plano-convex design of this lens results in a flat field, which is essential for uniform image quality in many applications, such as machine vision and scientific research.

3. High-Quality Coating: II-VI lenses are known for their high-quality coatings, which reduce reflections and improve transmission. This lens's multilayer anti-reflection coating is expected to enhance its performance and durability.

4. Versatile: The relatively short focal length of 3 inches makes this lens suitable for various applications, including infrared microscopy, surveillance, and industrial inspection.

1. Limited Focal Length: The short focal length of 3 inches may not be ideal for all applications. Users with requirements for longer focal lengths might find it necessary to invest in additional lenses.

2. Cost: II-VI lenses are generally more expensive compared to lenses from other manufacturers due to their high-quality materials and advanced coatings.

3. Size and Weight: The lens's dimensions and weight may be a concern for some users, especially those who require portability.

The II-VI 208685 Infrared ZnSE Plano-Convex Lens (1.5, 3.75 fl, ET300) offers several advantages, such as superior infrared transmission, flat field, high-quality coating, and versatility. However, it also comes with some disadvantages, including a limited focal length, higher cost, and larger size and weight.

Based on the information provided, it is recommended that potential buyers carefully consider their specific application requirements and budget before deciding to purchase this II-VI infrared lens. If the advantages align with the user's needs and budget, this lens could prove to be an excellent investment. Otherwise, users might want to explore other options with longer focal lengths, lower costs, or smaller sizes.

part # 208685 price

• $399.95

specifications cncmano:

• brand: Ii-vi Incorporated
• part type: Len
• manufacturer part number: 208685

payments cncmano:

• other
• wallet: Paypal
• credit card: Diners-club

general cncmano:

• condition: Seller refurbished
• Business Industrial > CNC, Metalworking Manufacturing > Other CNC, Metalworking Manufacturing

seller cncmano:

• rating: 100.0%
• # reviews: 1130

shipping cncmano:

• service: Economy
• class: Economy
• transit: 4-10 Days
• cost: $0.00
• type: Fixed

returns cncmano:

• policy: No Returns

offer cncmano:

• sold: 0
• availability: In Stock
• started: February 23, 2026
• quantity: 1
• options: Ship-to-home

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