TEN-HIGH Cu Reflective Lens CO2 or TEN-HIGH Diameter 20mm Focal Lens? Which TEN-HIGH Model to Buy
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You are comparing ten high cu reflective lens co2 vs diameter 20mm focal lens. Both items are replacement parts for CO2 laser engraving machines. They share a focus on high optical performance and durability. The main difference lies in their function and material. One is a transmissive ZnSe focal lens. The other is a reflective gold-plated copper mirror. Understanding these specs helps you pick the right component for your specific optical path needs.
Key differences
| Aspect | TEN-HIGH 20mm ZnSe Focal Lens | TEN-HIGH 30mm Gold-Plated Copper CO2 Mirrors |
|---|---|---|
| Laser Type | CO2 | CO2 |
| Material | ZnSe | Gold-Plated Copper |
| Form Factor | Plano convex lens | Plane mirror |
| Diameter | 20mm | 30mm |
| Compatible Power | not listed | 40W-5000W |
| Transmittance/Reflectance | High transmittance | ＞99.9% |
Which one should you choose?
Choose TEN-HIGH 20mm ZnSe Focal Lens if
- You need a focal lens to focus the laser beam onto the material.
- Your machine requires a 20mm diameter ZnSe lens.
Choose TEN-HIGH 30mm Gold-Plated Copper CO2 Mirrors if
- You need reflective mirrors to direct the laser beam.
- You are upgrading or replacing mirrors in a high-power system up to 5000W.
Verdict: Choose the 20mm ZnSe focal lens if you need to focus the beam for cutting or engraving. Select the gold-plated copper mirror if you need reflective components to guide the laser path. The focal lens shapes the beam, while the mirror redirects it.
Reflective vs Focal Lens Specs
Laser Type
Both products are designed specifically for CO2 laser systems. The TEN-HIGH 20mm ZnSe Focal Lens is listed for CO2 machines. The TEN-HIGH Cu Reflective Lens is also designated for CO2 laser engraving. Since both items target the same laser technology, there is no difference in compatibility here. You can use either part in a CO2 setup. The choice depends on where the part sits in the optical path, not on the laser type itself.
Optical Function
The focal lens uses a plano convex shape to focus the beam. This shape helps with better quality when engraving. It has a focal length of 127mm. The reflective lens is a plane mirror. It reflects the laser beam rather than focusing it. The focal lens reduces laser loss through high transmittance. The reflective mirror boasts over 99.9% transmittance. One directs the beam to the material. The other guides the beam through the machine. They serve distinct roles in the optical train.
Material Composition
The focal lens is made from ZnSe material. This material offers excellent optical properties and superior transmittance. It has a double-sided solid coating for wiping resistance. The reflective lens is made from oxygen-free copper. It is gold-plated for high performance. This material provides high temperature resistance and long working life. The copper mirror is suitable for higher power ranges. The ZnSe lens focuses the light. The copper mirror reflects it. The materials are chosen for their specific optical behaviors.
Power Compatibility
The focal lens does not list a specific power range. It focuses on transmittance and coating durability. The reflective lens supports a wide power range. It is compatible with power from 40W to 5000W. This makes the copper mirror suitable for high-power machines. The focal lens is a standard replacement part. Its power handling is implied by its design. The mirror explicitly states its high power capability. If you run high-power equipment, the mirror spec is clear. The lens spec is less detailed on this point.
Physical Dimensions
The focal lens has a diameter of 20mm. Its focal length is 127mm. The thickness is approximately 2.2mm. The weight is 0.64 ounces. The reflective lens has a diameter of 30mm. Its thickness is 3mm. The weight is 0.3KG. The sizes are different. The mirror is larger and heavier. The focal lens is smaller and lighter. These dimensions determine where they fit in the machine. You must match the size to your holder. The focal length is unique to the lens. The mirror has no focal length.
Which TEN-HIGH lens fits you
Users needing precise engraving details
The TEN-HIGH 20mm ZnSe Focal Lens uses a plano convex shape to improve engraving quality. Its high transmittance reduces laser loss, increasing work efficiency. The 127mm focal length and 20mm diameter create a focused beam for sharp details. Superior coatings and precision polishing ensure long life and consistent optical performance for detailed tasks.
High power laser machine operators
The TEN-HIGH Cu Reflective Lens supports power levels from 40W to 5000W. Made of gold-plated oxygen-free copper, it handles high temperatures and offers greater than 99.9% transmittance. This mirror guides the beam rather than focusing it. The 30mm diameter and robust construction suit high-power systems requiring durable reflective components.
Buyers wanting multiple replacement mirrors
This package includes three gold-plated copper mirrors. The set provides redundancy for maintenance or backup. Each mirror features superb coating art and precision grinding. The high optical properties and long working life make it a practical choice for maintaining beam alignment in CO2 laser engraving machines without frequent single purchases.
The products compared
TEN-HIGH 20mm ZnSe Focal Lens
Best for: Standard 5-inch focal length replacement
- 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 zinc selenide with a plano-convex shape to improve engraving quality. It measures 20mm in diameter with a 127mm focal length. The double-sided coating aims to reduce laser loss and increase efficiency. It fits CO2 laser cutting and engraving machines. You should choose this if you need a standard 5-inch focal length replacement part for your existing setup.
Pros
- 20mm diameter and 127mm focal length
- ZnSe material with high transmittance
- Plano-convex shape for better quality
- Double-sided solid coating for durability
Cons
- Fixed 127mm focal length limits close-up work
- No included cleaning kit or case
- Requires manual handling during installation
Good fit if
- You need a 5-inch focal length replacement
- You use a standard CO2 laser machine
- You want high transmittance for efficiency
Skip if
- You require a shorter focal length
- You need a pre-cleaned lens
- You want a kit with tools
Verdict: TEN-HIGH 20mm 127mm Focal CO2 Lens provides a standard 5-inch focal length for CO2 machines. It suits users who need a direct replacement with high transmittance for standard engraving tasks.
TEN-HIGH 30mm Gold-Plated Copper CO2 Mirrors
Best for: High-power CO2 laser reflective optics
- Laser Type
- CO2
- Compatible Material
- Gold
View on Amazon: TEN-HIGH 30mm Gold-Plated Copper CO2 Mirrors Affiliate link
This TEN-HIGH lens is a gold-plated copper mirror for CO2 laser systems. It has a 30mm diameter and 3mm thickness. The material offers over 99.9% transmittance for high efficiency. It supports power levels from 40W to 5000W. You get three mirrors in one package. This setup suits users needing durable, high-transmittance reflective optics for higher power engraving or cutting tasks.
Pros
- Gold-plated oxygen-free copper construction
- Greater than 99.9% transmittance
- Compatible with 40W to 5000W power
- Package includes three mirrors
Cons
- Plane shape limits focal depth control
- 30mm diameter is larger than standard 20mm lenses
- Requires existing optical alignment in the laser head
Good fit if
- You need high transmittance for high-power CO2 lasers
- You want a durable gold-plated copper mirror
- You require multiple replacement lenses in one pack
Skip if
- You need a focused beam for fine engraving
- You require a compact 20mm lens size
- You are using a low-power laser under 40W
Verdict: TEN-HIGH Gold-Plated Copper CO2 Laser Lens is a high-transmittance reflective mirror for high-power CO2 lasers. It fits users who need durable copper optics and multiple replacements. It is not suitable for fine focal work.
Specifications side by side
| Spec | TEN-HIGH 20mm ZnSe Focal Lens | TEN-HIGH 30mm Gold-Plated Copper CO2 Mirrors |
|---|---|---|
| Laser Type | CO2 | CO2 |
| Compatible Material | not stated | Gold |
| Dimensions | 1.97 × 0.79 × 1.97 inches | not stated |
| Weight | 0.64 ounces | not stated |
| Size | 5"/127mm | Gold-Plated Copper |
| Model | ABCD | not stated |
| Color | not stated | D: 30mm |
Frequently asked questions
Is the TEN-HIGH 20mm lens a mirror or a focal lens?
The TEN-HIGH 20mm ZnSe Focal Lens is a focal lens, not a mirror. It is designed to focus the laser beam onto the material for engraving or cutting. The reflective lens, made of gold-plated copper, serves as a mirror to redirect the laser path within the machine. Choose the focal lens for final beam focusing.
What is the focal length of the TEN-HIGH 20mm ZnSe lens?
The TEN-HIGH 20mm ZnSe Focal Lens has a focal length of 127mm, which equals 5 inches. This standard length is suitable for most CO2 laser engraving machines. It provides a balanced focus spot size for general engraving tasks. This specification helps you determine if it fits your machine's optical tube length.
Does the TEN-HIGH Cu reflective lens work for fine details?
No, the TEN-HIGH Gold-Plated Copper CO2 Laser Lens is not suitable for fine focal work. It is designed as a high-transmittance reflective mirror for high-power CO2 lasers. Its primary role is to direct the beam, not to focus it for detailed engraving. Use the ZnSe focal lens for precision work.
What material is the TEN-HIGH 20mm focal lens made of?
The TEN-HIGH 20mm ZnSe Focal Lens is made of Zinc Selenide (ZnSe). This material offers high transmittance for CO2 laser wavelengths, reducing laser loss and increasing work efficiency. The reflective lens, in contrast, is made of gold-plated copper. ZnSe is the standard material for focusing optics in CO2 systems.
How much does the TEN-HIGH 20mm focal lens weigh?
The TEN-HIGH 20mm ZnSe Focal Lens weighs 0.64 ounces. It is a lightweight component with dimensions of 1.97 inches in height and length. The width is 0.79 inches. This small footprint makes it easy to handle and install as a replacement part in standard CO2 laser engraving machines.
What is the diameter of the TEN-HIGH copper mirror?
The TEN-HIGH Gold-Plated Copper CO2 Laser Lens has a diameter of 30mm. It is designed for high-power CO2 laser systems requiring durable reflective optics. This size distinguishes it from the 20mm diameter of the focal lens. Ensure your machine's optical path can accommodate this 30mm reflective component.
Can I use the copper lens for engraving instead of the ZnSe lens?
No, you cannot use the copper reflective lens for engraving. The copper lens is a mirror that redirects the laser beam. The ZnSe focal lens is required to focus the beam onto the material surface. Using the mirror for engraving will not produce any result. Each component has a distinct role in the optical path.