TEN-HIGH 20mm ZnSe Focal Lens or TEN-HIGH 15mm ZnSe CO2 Laser? Which TEN-HIGH Model to Buy
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This ten high 20mm znse focal lens vs 15mm znse co2 laser comparison helps you pick the right part for your machine. Both lenses use ZnSe material and share a 127mm focal length. They both feature double-sided solid coating and plano convex shapes. The main difference is the diameter. One is 20mm wide. The other is 15mm wide. You need to match the lens to your laser tube size. This guide breaks down the specs so you can choose correctly.
Key differences
| Aspect | TEN-HIGH 20mm ZnSe Focal Lens | TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens |
|---|---|---|
| Diameter | 20mm (0.79 inch) | 15mm (0.59 inch) |
| Weight | 0.64 ounces | 3.53 ounces |
| Available Sizes | 6 options | 8 options |
Which one should you choose?
Choose TEN-HIGH 20mm ZnSe Focal Lens if
- You have a laser system that requires a 20mm diameter lens.
- You prefer a lighter component for your optical setup.
- Your machine tube size matches the 20mm specification.
Choose TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens if
- You have a laser system that requires a 15mm diameter lens.
- You need a lens compatible with smaller tube diameters.
- Your machine specifications call for the 15mm width.
Verdict: Choose the 20mm lens if your laser tube requires that specific diameter. Choose the 15mm lens if your machine is built for the smaller size. Both lenses offer the same focal length and coating quality, so the decision rests entirely on your hardware requirements.
Lens Diameter And Weight Comparison
Lens Diameter
The TEN-HIGH 20mm ZnSe Focal Lens has a diameter of 20mm, which equals 0.79 inches. The TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens is smaller, with a diameter of 15mm, or 0.59 inches. This difference in physical size affects how the lens fits into your laser head. A larger diameter lens may require a specific mount or holder that accommodates the wider glass. If your machine has a tight space constraint, the 15mm model might fit where the 20mm model cannot. You need to check your current lens holder dimensions before buying.
Weight
Weight differs significantly between these two options. The TEN-HIGH 20mm ZnSe Focal Lens weighs only 0.64 ounces. In contrast, the TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens weighs 3.53 ounces. This is a substantial difference. A lighter lens reduces the load on your laser head assembly. It may allow for faster movement if your machine uses a lightweight carriage. The heavier 15mm lens might provide more stability in some setups, but it adds mass. Consider your machine's motor strength and carriage design when deciding which weight profile suits your operational needs best.
Focal Length
Both lenses share the same focal length specification. The TEN-HIGH 20mm ZnSe Focal Lens has a focal length of 127mm, which is 5 inches. The TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens also lists a focal length of 127mm, or 5 inches. This means the distance from the lens to the focal point is identical for both models. Your engraving depth of field and spot size at the focal plane will be determined by this common value. Since the focal length is the same, you do not need to adjust your Z-axis height settings drastically if you switch between these two specific lenses, assuming the mount height is consistent.
Material And Coating
Both products use the same core materials and manufacturing processes. The TEN-HIGH 20mm ZnSe Focal Lens is made from superior transmittance ZnSe material with a plano convex shape. It features double-sided solid coating for wiping resistance and long working life. The TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens shares these exact features. It also uses ZnSe material, a plano convex shape, and double-sided solid coating. Both are designed for high transmittance to reduce laser loss and improve work efficiency. Neither product has a distinct advantage in material quality or coating technology based on the provided specifications.
Thickness
The physical thickness of the glass element is identical for both lenses. The TEN-HIGH 20mm ZnSe Focal Lens has a thickness of approximately 2.2mm, or 0.09 inches. The TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens also lists a thickness of approximately 2.2mm, or 0.09 inches. This consistency ensures that the optical path length through the glass is the same. It simplifies compatibility with existing lens holders that are designed for a specific glass thickness. You can expect similar thermal handling characteristics since the material thickness is not a differentiating factor between these two specific model variants.
Which TEN-HIGH Lens Fits Your Work
Users needing a wider beam spread
The 20mm diameter lens offers a broader optical path compared to the 15mm option. This larger size helps manage the laser beam more effectively across wider areas. If your projects require covering a larger surface area or you prefer a wider focal spread, this 20mm lens provides the necessary physical dimensions for those specific engraving needs.
Those preferring lighter replacement parts
Weight matters when swapping lenses frequently. The 20mm model weighs only 0.64 ounces. In contrast, the 15mm lens listed weighs 3.53 ounces. If you handle the lens often or want to reduce the overall weight in your machine assembly, the lighter 20mm option is the practical choice for easier handling and installation.
Buyers wanting more size variations
The 15mm lens series includes eight size variations, ranging from 1 inch to 7.5 inches. The 20mm lens series offers six variations. If you need specific non-standard sizes like 2.5 inches or 7.5 inches, the 15mm line provides a broader range of options. Check your machine's requirements against this larger list of available diameters.
The products compared
TEN-HIGH 20mm ZnSe Focal Lens
Best for: CO2 lasers needing 127mm focal length
- Laser Type
- CO2
- Dimensions
- 1.97 × 0.79 × 1.97 inches
- Weight
- 0.64 ounces
View on Amazon: TEN-HIGH 20mm ZnSe Focal Lens Affiliate link
This TEN-HIGH lens uses ZnSe material with a 20mm diameter and 127mm focal length. It features a plano-convex shape and double-sided solid coating for high transmittance. The lens weighs 0.64 ounces and measures 1.97 inches in height. It suits CO2 laser engraving machines. You get reduced laser loss and longer working life. This model offers superior optical properties for better engraving quality.
Pros
- 20mm diameter with 127mm focal length
- Superior transmittance ZnSe material
- Double-sided solid coating for durability
- Plano-convex shape for quality engraving
Cons
- Heavier than the 15mm lens alternative
- Larger diameter may not fit all mounts
- Fixed focal length limits versatility
Good fit if
- You need a 127mm focal length
- You use a CO2 laser machine
- You want high transmittance materials
Skip if
- You require a 15mm focal length
- You need a smaller 20mm diameter
- You use a fiber laser system
Verdict: TEN-HIGH 20mm ZnSe Focal Lens provides reliable performance for CO2 lasers. It fits users who prioritize high transmittance and a 127mm focal length for detailed engraving work.
TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens
Best for: Compact CO2 lasers needing 127mm focus
- Laser Type
- CO2
- Dimensions
- 1.97 × 0.79 × 1.97 inches
- Weight
- 3.53 ounces
View on Amazon: TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens Affiliate link
This TEN-HIGH lens uses ZnSe material with a 15mm diameter and a 127mm focal length. It features a plano-convex shape and double-sided solid coating for high transmittance. The lens measures 2.2mm thick and weighs 3.53 ounces. It suits CO2 laser engraving and cutting machines. You get precise slicing and polishing for better engraving quality. This model offers a standard focal length for general use.
Pros
- 15mm diameter with 127mm focal length
- ZnSe material with high transmittance
- Plano-convex shape for better engraving quality
- Double-sided solid coating for durability
Cons
- Shorter 127mm focal length than the 20mm 200mm alternative
- Smaller 15mm diameter limits beam handling
- No included mounting hardware listed
Good fit if
- You need a standard 127mm focal length
- You prefer a smaller 15mm diameter lens
- You want high transmittance for efficiency
Skip if
- You require the longer 200mm focal length
- You need a larger 20mm diameter lens
- You want a lens with included mounts
Verdict: TEN-HIGH 15mm Focal Lens 127mm provides a compact 15mm diameter and 127mm focal length for CO2 lasers. It fits users who prioritize a shorter focal distance and smaller lens size over the larger 20mm 200mm option.
Specifications side by side
| Spec | TEN-HIGH 20mm ZnSe Focal Lens | TEN-HIGH 15mm ZnSe CO2 Laser Focal Lens |
|---|---|---|
| Laser Type | CO2 | CO2 |
| Dimensions | 1.97 × 0.79 × 1.97 inches | 1.97 × 0.79 × 1.97 inches |
| Weight | 0.64 ounces | 3.53 ounces |
| Size | 5"/127mm | 5"/127mm |
| Model | ABCD | not stated |
Frequently asked questions
Can I use the TEN-HIGH 20mm lens on my CO2 laser?
Yes. The TEN-HIGH 20mm ZnSe Focal Lens is designed specifically for CO2 lasers. It provides a 127mm focal length for detailed engraving. The lens weighs only 0.64 ounces and measures 0.79 inches in width. This makes it a suitable replacement part for compatible machines.
Is the TEN-HIGH 15mm lens better for small machines?
It fits compact setups well. The 15mm diameter is smaller than the 20mm option. It still offers a 127mm focal length for CO2 lasers. The lens weighs 3.53 ounces. This model suits users who prioritize a shorter focal distance and smaller physical size over the larger 20mm version.
What is the focal length for both TEN-HIGH lenses?
Both lenses share a 127mm focal length. The 20mm model is labeled as size 5 inches. The 15mm model is also listed with a 127mm size specification. This consistent focal length ensures similar focus distances for your laser projects regardless of which diameter you choose.
How heavy is the TEN-HIGH 20mm focal lens?
The TEN-HIGH 20mm ZnSe Focal Lens weighs 0.64 ounces. It is a lightweight component. The dimensions are 0.79 inches in width. The height and length are both 1.97 inches. This low weight helps keep your laser head balanced during operation.
Does the TEN-HIGH 15mm lens have the same dimensions as the 20mm?
The physical dimensions listed are identical for both models. Both have a width of 0.79 inches and a height of 1.97 inches. The length is 1.97 inches for each. The key difference is the internal diameter and the total weight, which is 3.53 ounces for the 15mm version.
Which TEN-HIGH lens is best for detailed engraving?
The TEN-HIGH 20mm ZnSe Focal Lens is recommended for detailed work. It provides reliable performance for CO2 lasers. The 127mm focal length supports precision engraving. The model ABCD designation indicates its specific optical configuration. It fits users who prioritize high transmittance for fine details.