OPTO Telecentric Lenses Up to 4/3" SENSORS
Opto Engineering (OPTO) offers a variety of lenses for machine vision applications that support up to 4/3" sensors
Opto Engineering (OPTO) offers a variety of lenses for machine vision applications that support up to 4/3″ sensors (which have a diagonal image circle of approximately 21.6 \text{ mm} to 23 \text{ mm}).
The most common data provided for these lenses relate to their key optical and mechanical specifications, often categorized by lens type.
Telecentric Lenses (TC4MHR and TC4MHR CORE Series)
Telecentric lenses are a core product for OPTO and are essential for high-precision measurement (metrology) applications as they eliminate parallax error.
| Parameter | TC4MHR Series (Classic) Example: TC4MHRP120-C | TC4MHR CORE Series (Compact) Example: TC4MHRP-CORE192-C |
| Max Sensor Size | $4/3″$ | $4/3″$ |
| Magnification (Mag) | Varies widely, e.g., $0.120\times$ | Varies, e.g., $0.192\times$ |
| Field of View (FOV) on $4/3″$ Sensor | Depends on Mag, e.g., $34.5 \times 25.9 \text{ mm}$ (for $0.120\times$) | Depends on Mag, e.g., $21.6 \times 16.2 \text{ mm}$ (for $0.192\times$) |
| Working Distance (WD) | Varies widely, e.g., $334.6 \text{ mm}$ | Varies, e.g., $192 \text{ mm}$ |
| F-Number ($f/\#$) | Typically around $f/8$ | Typically around $f/8$ |
| Mount | C-Mount, F-Mount, M42-Mount | C-Mount |
| Key Advantage | High-resolution, low distortion, high telecentricity | Extremely compact size (up to 70% shorter) with excellent performance |
Fixed Focal Length Lenses (EN10MP and EN-A5MX Series)
These lenses are designed for general machine vision tasks requiring high resolution and are compatible with large, high-pixel-count sensors.
EN10MP Series (10 Megapixel)
Target Sensor: High-resolution sensors up to $1.1″$ and $4/3″$ (e.g., Sony Pregius $12 \text{ MP}$ IMX304/253).
Resolution: Designed for high-speed, high-precision imaging.
Low Distortion: Typically very low, some models down to $0.14\%$.
| Part Number | Focal Length (f) | Max Sensor Size | Angle of View (Diagonal) | f/# Range | Mount |
| EN10MPL1220 | $12 \text{ mm}$ | $4/3″$ | $89.0$ degrees | $f/2.0 – f/22$ | C |
| EN10MPL2520 | $25 \text{ mm}$ | $4/3″$ | $49.7$ degrees | $f/2.0 – f/22$ | C |
| EN10MPL5020 | $50 \text{ mm}$ | $4/3″$ | $25.9$ degrees | $f/2.0 – f/22$ | C |
Common Features
4/3" Sensor Format
The “4/3 inch” designation refers to the maximum image circle diameter the lens can cover, which is approximately 21.6 \text{ mm} diagonal (or up to 23 \text{ mm} for some lens series), not the physical size of the sensor chip itself.
Applications
These lenses are primarily used for industrial machine vision and metrology (precise measurement) where consistent and accurate imaging across the entire field of view is critical.
