TEN-HIGH CO2 Laser Lens 25.4mm or TEN-HIGH Diameter 20mm Focal Lens? Which TEN-HIGH Model to Buy
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You are deciding between the ten high co2 laser lens 25 4mm vs diameter 20mm focal lens. Both lenses are made from ZnSe material with double-sided solid coatings for high transmittance and durability. They share the same basic plano-convex shape. The main difference lies in their physical dimensions and focal lengths. One model offers a larger diameter with a longer focal length, while the other is smaller with a shorter focus distance. Your choice depends on your machine's specific requirements.
Key differences
| Aspect | TEN-HIGH 20mm ZnSe Focal Lens | TEN-HIGH 25.4mm ZnSe CO2 Focus Lens |
|---|---|---|
| Diameter | 20mm (0.79 inches) | 25.4mm (1 inch) |
| Focal Length | 127mm (5 inches) | 38.1mm (1.5 inches) |
| Thickness | Approximately 2.2mm | 3mm |
| Compatible Power | Not listed | 150W-400W |
| Transmittance | High (exact % not listed) | ≥99.5% |
Which one should you choose?
Choose TEN-HIGH 20mm ZnSe Focal Lens if
- You need a longer focal length of 127mm for deeper engraving or larger working distance.
- Your machine requires a smaller lens diameter of 20mm.
Choose TEN-HIGH 25.4mm ZnSe CO2 Focus Lens if
- You require a shorter focal length of 38.1mm for tighter focus spots.
- You want a lens explicitly rated for 150W-400W power ranges with stated ≥99.5% transmittance.
Verdict: Choose the 20mm lens if your system needs a 5-inch focal length. Pick the 25.4mm lens if you need a 1.5-inch focal length and explicit power ratings. Match the focal length to your machine's optical path.
Lens Specs and Power Match
Focal Length Choice
The TEN-HIGH 20mm ZnSe Focal Lens features a focal length of 127mm, which is approximately 5 inches. This longer focal length is typically preferred for cutting thicker materials or for applications requiring a larger depth of field. In contrast, the TEN-HIGH CO2 Laser Lens 25.4mm has a focal length of 38.1mm, or 1.5 inches. This shorter focal length concentrates the laser beam into a tighter spot, making it ideal for high-precision engraving on flat surfaces. Your choice depends on whether you prioritize cutting depth or engraving sharpness.
Laser Power Compatibility
The TEN-HIGH CO2 Laser Lens 25.4mm explicitly states a compatible power range of 150W to 400W. This specification helps you verify that the lens can handle the output of your specific machine without damage. The TEN-HIGH 20mm ZnSe Focal Lens does not list a specific wattage limit in its provided data. While both use ZnSe material, the lack of power specifications for the 20mm lens means you must check your machine manual separately to ensure safety. The 25.4mm lens offers clearer guidance on power handling.
Lens Diameter and Size
The physical diameter of the lens is a critical fitment factor. The TEN-HIGH CO2 Laser Lens 25.4mm has a diameter of 25.4mm, which equals exactly 1 inch. The TEN-HIGH 20mm ZnSe Focal Lens has a diameter of 20mm, or 0.79 inches. You must ensure your laser machine's lens holder matches these dimensions. These are distinct sizes, so they are not interchangeable. The 25.4mm model is slightly wider, while the 20mm model is more compact. Verify your hardware before purchasing to avoid fitment issues.
Weight and Build
Weight can indicate the mass of the glass and coating quality. The TEN-HIGH CO2 Laser Lens 25.4mm weighs 0.1KG, which converts to approximately 3.53 ounces. The TEN-HIGH 20mm ZnSe Focal Lens weighs 0.64 ounces. The 25.4mm lens is significantly heavier, which may suggest a thicker or more robust construction, though it also has a larger diameter. The 20mm lens is very lightweight. Both are designed for CO2 lasers, but the weight difference is notable. Heavier lenses may dissipate heat differently during prolonged use.
Optical Coating Quality
Both lenses emphasize high optical performance through their coatings. The TEN-HIGH 20mm lens highlights a double-sided solid coating that offers wiping resistance and a long working life. It also claims high transmittance to reduce laser loss. The TEN-HIGH 25.4mm lens also features a superb double-sided solid coating and specifies a transmittance rate of 99.5% or higher. Both products use precision slicing, polishing, and grinding processes. The 25.4mm lens provides a specific transmittance percentage, while the 20mm lens focuses on durability features like wiping resistance.
Choose based on focal length needs
Cutting thicker materials or needing depth of field
This lens offers a 127mm focal length. A longer focal length provides a larger depth of field. This helps maintain focus across uneven surfaces. It is suitable for cutting thicker materials. The 20mm diameter fits standard mounts. Choose this if you prioritize depth over spot size.
Engraving with 150W to 400W CO2 lasers
This model supports 150W to 400W power levels. It features a shorter 38.1mm focal length. This creates a smaller spot size for fine detail. The 25.4mm diameter is standard for many machines. High transmittance reduces laser loss. Pick this for high-power engraving tasks requiring precision.
Users wanting high transmittance specs
This lens specifies transmittance of 99.5% or higher. High transmittance ensures more laser energy reaches the material. This improves work efficiency. The PVD ZnSe material supports high temperatures. The double-sided coating adds durability. Choose this if maximizing energy transfer is your priority.
The products compared
TEN-HIGH 20mm ZnSe Focal Lens
Best for: CO2 lasers needing 20mm diameter and 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 a 20mm diameter with a 127mm focal length. It is made of ZnSe with double-sided solid coating for high transmittance. The plano-convex shape helps improve engraving quality. It weighs 0.64 ounces and fits CO2 laser machines. You should choose this if you need a 5-inch focal length lens with a 20mm diameter for your specific machine setup.
Pros
- 20mm diameter size
- 127mm focal length
- ZnSe material with high transmittance
- Double-sided solid coating for durability
Cons
- Only available in 20mm diameter
- Fixed 127mm focal length
- No mounting hardware included
Good fit if
- You need a 20mm diameter lens
- You require a 127mm focal length
- You use a CO2 laser engraver
Skip if
- You need a 25.4mm diameter lens
- You require a different focal length
- You need a lens with included mount
Verdict: TEN-HIGH 20mm Focal Lens 127mm fits users needing a 20mm diameter and 127mm focal length for CO2 lasers. It offers high transmittance and durable coating for precise engraving tasks.
TEN-HIGH 25.4mm ZnSe CO2 Focus Lens
Best for: 150W-400W CO2 lasers needing 25.4mm lenses
- Laser Type
- CO2
- Weight
- 3.53 ounces
View on Amazon: TEN-HIGH 25.4mm ZnSe CO2 Focus Lens Affiliate link
This TEN-HIGH lens features a 25.4mm diameter and a 38.1mm focal length. It is made from PVD ZnSe with a plano-convex shape. The lens supports 150W to 400W CO2 lasers. It offers 99.5% transmittance and double-sided coating. This size suits machines requiring a 1-inch lens. It provides high efficiency and resistance to high temperatures for consistent engraving results.
Pros
- 25.4mm diameter fits standard mounts
- 38.1mm focal length for precise focus
- PVD ZnSe material with 99.5% transmittance
- Compatible with 150W-400W CO2 lasers
Cons
- Limited to 150W-400W power range
- Single lens included without holder
- Requires manual installation
Good fit if
- You need a 25.4mm diameter lens
- You use a 150W-400W CO2 laser
- You require a 38.1mm focal length
Skip if
- You need a lens larger than 25.4mm
- Your laser exceeds 400W power
- You require a different focal length
Verdict: TEN-HIGH 25.4mm CO2 Laser Lens is a solid choice for users needing a 1-inch lens with 38.1mm focal length. It fits 150W-400W CO2 systems well. This lens delivers reliable optical performance for standard engraving tasks.
Specifications side by side
| Spec | TEN-HIGH 20mm ZnSe Focal Lens | TEN-HIGH 25.4mm ZnSe CO2 Focus Lens |
|---|---|---|
| Laser Type | CO2 | CO2 |
| Dimensions | 1.97 × 0.79 × 1.97 inches | not stated |
| Weight | 0.64 ounces | 3.53 ounces |
| Size | 5"/127mm | 1.5"/38.1mm |
| Model | ABCD | not stated |
Frequently asked questions
What is the focal length of the TEN-HIGH 20mm lens?
The TEN-HIGH 20mm ZnSe Focal Lens has a focal length of 127mm. This measurement is also listed as 5 inches in the specifications. You will find this dimension under the size attribute for model ABCD. It provides a longer working distance compared to shorter focal options.
What is the focal length of the TEN-HIGH 25.4mm lens?
The TEN-HIGH 25.4mm CO2 Focus Lens features a focal length of 38.1mm. This is equivalent to 1.5 inches as shown in the size spec. This shorter focal length is designed for different cutting and engraving requirements compared to the 127mm option.
Which lens fits 150W to 400W CO2 lasers?
The TEN-HIGH 25.4mm lens is the suitable choice for 150W to 400W CO2 systems. The product data explicitly states it fits these power ranges well. The 20mm lens does not list specific wattage compatibility in its attributes, so the 25.4mm model is the verified match for higher power units.
How much does the 20mm focal lens weigh?
The TEN-HIGH 20mm ZnSe Focal Lens weighs 0.64 ounces. This lightweight design is listed in its specific product specifications. It is significantly lighter than the 25.4mm alternative, which weighs 3.53 ounces. The difference in mass may matter for mounting stability in your specific laser setup.
What material are these TEN-HIGH lenses made from?
Both lenses are constructed from ZnSe material. This is standard for CO2 laser optics. The product descriptions confirm they use double-sided solid coatings on the ZnSe substrate. This combination ensures high transmittance and durability for precise engraving tasks in CO2 laser systems.
What is the diameter of the TEN-HIGH 20mm lens?
The TEN-HIGH 20mm ZnSe Focal Lens has a diameter of 20mm. The product name and best-for description both confirm this size. It is designed specifically for CO2 lasers that require this 20mm diameter specification. The width is listed as 0.79 inches, which aligns with the 20mm measurement.
What is the diameter of the TEN-HIGH 25.4mm lens?
The TEN-HIGH 25.4mm CO2 Focus Lens has a diameter of 25.4mm. This size is also referred to as 1 inch in the product details. It is built for users needing a 1-inch lens with a 38.1mm focal length. This makes it distinct from the smaller 20mm diameter option.
Does the 20mm lens have a specific model number?
Yes, the TEN-HIGH 20mm ZnSe Focal Lens is identified as model ABCD. This model code appears in the specs section of the product data. It helps distinguish this specific 127mm focal length unit from other TEN-HIGH lens variants. Use this model number when checking compatibility with your laser head.