TEN-HIGH Diameter 20mm Focal Lens Review: Who It Fits and Who Should Skip It
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This ten high diameter 20mm focal lens review covers a replacement part for CO2 laser systems. It is a ZnSe plano-convex lens with a 20mm diameter and a 127mm focal length. The lens features double-sided solid coating for wiping resistance. It aims to reduce laser loss through high transmittance materials. The physical dimensions are approximately 1.97 inches in height and 0.64 ounces in weight. This component is designed for precision slicing and polishing processes. It serves as a direct upgrade for machines requiring this specific focal length.
What stands out
- 20mm diameter and 127mm focal length
- Superior transmittance ZnSe material
- Double-sided solid coating for durability
- Plano-convex shape for engraving quality
- High temperature and laser resistance
Who it fits
Good fit for
You should choose this lens if you run a CO2 laser engraver or cutter that requires a 127mm focal length. The 20mm diameter fits standard holders for this size. The high transmittance ZnSe material helps maintain beam efficiency. If you need a lens that resists wiping damage and handles high temperatures, this spec sheet suggests it is built for that. It is a practical choice for users who value optical precision and long working life in their daily operations.
Who should skip it
You should skip this option if your machine uses a different focal length, such as 50.8mm, 75mm, or 101.6mm. The data lists other size options, so this specific 127mm lens will not fit those setups. It is also not suitable for fiber lasers, as the attributes specify CO2 compatibility only. If you need a lens with a different diameter, like 25.4mm or 38.1mm, this 20mm unit is the wrong fit. Check your machine’s required focal length before purchasing.
Verdict: This lens is a solid match for CO2 lasers needing a 127mm focal length. Its ZnSe construction and coating specs support reliable performance.
Key specs explained for this lens
Diameter: 20mm (0.79 inch)
This measurement defines the physical width of the glass element. You must check your laser tube’s mounting ring to ensure the 20mm size fits. A mismatch prevents installation. If your machine uses a 25mm or 38mm lens, this part will not work. Always verify the holder size before purchasing to avoid incompatibility.
Focal length: 127mm (5 inches)
The focal length determines the distance from the lens to the material surface. A 127mm focal length is standard for many CO2 engravers. It offers a balance between spot size and depth of field. Shorter focal lengths produce finer lines but require tighter focus. Longer ones allow more working distance but may reduce detail.
Material: ZnSe
Zinc Selenide is the standard material for CO2 laser optics. It allows the 10.6-micron wavelength to pass through with minimal absorption. This material handles high heat better than alternatives like copper. It ensures consistent beam quality over time. If your laser is a CO2 type, ZnSe is the correct choice for your resonator.
Shape: Plano-convex
This lens has one flat side and one curved side. The plano-convex design helps focus the laser beam to a single point. This shape is common for engraving and cutting tasks. It directs energy efficiently onto the workpiece. Proper orientation matters. Install the convex side toward the material for optimal focus and cut quality.
Lens Design and Build Quality
The listing describes this lens as a plano-convex element made from zinc selenide. This material choice targets high transmittance for CO2 laser systems. The manufacturer states that superior transmittance reduces laser loss, which can improve work efficiency. The lens features a double-sided solid coating. According to the listing, this coating provides wiping resistance and aims for a long working life. The substrate is described as excellent, with precision slicing, polishing, and grinding processes. These steps support high temperature and laser resistance. You should handle the glass carefully to maintain these optical properties.
Physical dimensions are specific. The diameter measures 20mm, or 0.79 inches. The focal length is 127mm, which equals 5 inches. The thickness is approximately 2.2mm, or 0.09 inches. The listing also provides general product dimensions of 1.97 inches in height and length, with a weight of 0.64 ounces. These measurements define the footprint of the component. You must verify that your machine’s mounting ring accepts a 20mm diameter lens. A mismatch will prevent installation.
The design focuses on optical clarity and durability. The plano-convex shape is selected for better engraving quality. The coating process aims to protect the glass surface. This build suggests a part designed for frequent replacement in active CO2 laser setups. The lightweight nature means it does not add significant mass to your optical train. Ensure your machine’s optical path aligns with the 127mm focal length for optimal focus.
Setup And Daily Use Guide
Installing this TEN-HIGH lens requires careful handling. You must verify that your CO2 laser machine uses a 20mm diameter mount. The listing specifies a 127mm focal length. This dimension determines where the laser beam converges. Incorrect focal length results in poor engraving quality. The lens weighs 0.64 ounces. Its small size makes it easy to handle during replacement. You should clean the surface before installation. The double-sided solid coating offers wiping resistance. This feature allows you to maintain the lens without damaging the optical surface. Daily use involves regular cleaning to preserve high transmittance. The zinc selenide material provides laser resistance. This helps the lens withstand high temperatures during operation. Reduced laser loss means more energy reaches the workpiece. You will notice higher work efficiency when the lens is clean. The plano-convex shape ensures consistent beam focus. This geometry supports better quality engraving results. You should store the lens in a dry place. Moisture can affect the coating over time. The listing notes excellent optical properties. This suggests stable performance across different tasks. You do not need special software or adapters. The lens fits directly into standard CO2 laser tubes. Check the thickness, which is approximately 2.2mm. This ensures proper seating in your machine’s housing. Regular maintenance keeps the double-sided coating effective. Wiping the lens gently extends its working life. The high precision process of the substrate ensures durability. You rely on this component for consistent cut depth. Proper setup leads to reliable daily performance.
Before You Buy This Lens
You need to verify compatibility before ordering. This TEN-HIGH lens is designed strictly for CO2 laser systems. It will not work with fiber or diode machines. Check your current lens diameter. The listing specifies a 20mm size. If your machine uses a 25mm mount, this part will not fit. You must also confirm the focal length. The 127mm length changes your focus point. Compare this with other options in the 1 product selection. If you need a different focal length, look for the 50.8mm or 75mm variants. Upkeep requires care. The double-sided coating needs gentle cleaning. Use only approved wipes. Avoid harsh chemicals. This lens replaces worn optics. It restores beam quality. You should handle it with clean gloves. Dust affects transmittance. Proper storage matters. Keep the lens in its case when not in use. This ensures longevity. The high transmittance material helps efficiency. But only if installed correctly. Verify all specs match your machine’s requirements. This prevents wasted time and incorrect purchases.
Check before you buy
- Confirm your laser is a CO2 system, not fiber or diode.
- Measure your current lens mount to ensure it is 20mm.
- Check if your machine requires a 127mm focal length specifically.
- Review other size options like 50.8mm if 127mm is wrong.
- Ensure you have clean gloves and approved wipes for handling.
The product at a glance
TEN-HIGH 20mm ZnSe Focal Lens
Best for: CO2 laser users needing 127mm focal length
- Laser Type
- CO2
- Dimensions
- 1.97 × 0.79 × 1.97 inches
- Weight
- 0.64 ounces
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This TEN-HIGH lens is a 20mm diameter, 127mm focal length component designed for CO2 laser engraving and cutting machines. It uses ZnSe material with high transmittance to reduce laser loss and improve efficiency. The plano-convex shape aids engraving quality, while double-sided solid coating offers wiping resistance and a long working life. It suits users needing a standard 5-inch focal length replacement part.
Pros
- 20mm diameter and 127mm focal length
- High transmittance ZnSe material
- Plano-convex shape for better engraving
- Double-sided solid coating for durability
Cons
- Limited to CO2 laser systems only
- Focal length is fixed at 127mm
- No variable focus capability
Good fit if
- You need a 127mm focal length lens
- You use a CO2 laser machine
- You want high transmittance materials
Skip if
- You use a fiber laser system
- You need a different focal length
- You require variable focus options
Verdict: TEN-HIGH 20mm CO2 Laser Lens is a solid replacement for CO2 machines needing a 127mm focal length. It fits users prioritizing high transmittance and durable coating over variable focus features.
Specifications side by side
| Spec | TEN-HIGH 20mm ZnSe Focal Lens |
|---|---|
| Laser Type | CO2 |
| Dimensions | 1.97 × 0.79 × 1.97 inches |
| Weight | 0.64 ounces |
| Size | 5"/127mm |
| Model | ABCD |
Frequently asked questions
Is this lens compatible with fiber or diode lasers?
No. This TEN-HIGH lens is designed strictly for CO2 laser systems. It will not function with fiber or diode machines. You must verify your machine type before purchasing. Using it with the wrong laser type can damage the equipment or result in no engraving at all.
What is the actual focal length of this lens?
The focal length is 127mm. This measurement determines where the laser beam converges to a focal point. If your machine requires a different focal length, this lens will not produce sharp results. Always check your machine’s specifications to ensure the 127mm length matches your setup.
Does this lens fit standard CO2 laser mounts?
It fits mounts designed for a 20mm diameter lens. The physical width of the glass element is 0.79 inches. You must check your laser tube’s mounting ring to ensure this size fits. A mismatch between the mount and the lens diameter prevents proper installation.
What material is the lens made from?
The lens is made from zinc selenide (ZnSe). This material is chosen for its high transmittance in CO2 laser systems. High transmittance reduces laser loss, which can improve work efficiency. The plano-convex shape helps focus the beam effectively on the material surface.
Is the lens coated for durability?
Yes. The lens features double-sided solid coating for wiping resistance. This coating helps protect the glass element from scratches and debris during cleaning. It is designed to maintain optical clarity over time. Handle the lens with care to preserve the coating’s effectiveness.
How heavy is this focal lens?
The lens weighs 0.64 ounces. This lightweight design makes it easy to handle during installation. The dimensions are 1.97 inches in height and length, with a width of 0.79 inches. Its compact size ensures it fits into standard laser head assemblies without adding significant bulk.