RGBIR is a popular term for lenses optimized for operation in both daylight and low-light conditions. Such products require specialized design considerations, broadband AR coatings (BBAR) with low reflectivity (R%), dual-bandpass filter with high transmissivity (T%) in the VIS and IR bands, and specific manufacturing techniques to provide the best possible image quality.
If done right, an RGBIR lens can significantly improve focus, brightness, and resolution over conventional lenses.
The enhanced infrared sensitivity of RGBIR lenses is often paired with a dedicated infrared illumination source enabling night vision applications and use cases such as biometric authentication, gaze tracking, and gesture recognition.
IR-corrected lenses are used in many applications across different industries and can be referred to as RGBIR (e.g., automotive), Day/Night (e.g., Security and Surveillance), and also hyperspectral (e.g., medical).
All graphs are for illustration purposes only. The individual lens performance can be different.
Feature Products
| PN | Format | MP Class | FOV | F/# | Feature |
|---|---|---|---|---|---|
| DSL208 | 1/1.3” | 1.3MP | 22° | F/2.0 | All glass, long EFL, RGBIR Optimized |
| DSL213 | 1.3” | 2MP | 170° | F/2.0 | All glass, RGBIR Optimized |
| DSL186 | 1/1.7” | 8MP | 140° | F/1.8 | Hybrid, RGBIR Optimized, HDR |
| DSL240 | 1/1.3” | 1.3MP | 71° | F/2.1 | All glass, compact format, RGBIR Optimized |
| DSL936 | 1/1.2” | 5MP | 52° | F/3.2 | All glass, compact design, RGBIR Optimized |
| DSL392 | 1/1.27” | 2MP | 201° | F/2.0 | All glass, SuperFisheye(TM), Tailored Distortion(TM), RGBIR Optimized, HDR |
| IRC4x | various | -/- | -/- | -/- | single band, dual-band filters, VIS+850, VIS+940 |
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Additional Topics related to RGB☰IR(TM) lenses
Dual-Bandpass Filters
For many camera applications, Infrared (IR) is an unwanted component of the light spectrum and is often blocked using IR cut-off filters that block the transmission of the infrared while passing the visible (VIS). The Sunex IRC4x family of dual-bandpass filters on the other hand are specifically designed to allow the visible and a narrow IR-band to pass through simultaneously. Typical configurations are VIS+850 and VIS+940. Sunex also offers single-band IR filters, and custom filter designs.
Sensor Module Capabilities
Depending on the need and expertise of our customers, we provide design and manufacturing services for a complete sensor module. We strive to find the best solution for your needs, from designing the schematic, creating the PCB layout, and sourcing all components to building according to your PCB design and parts consignment. At Sunex, we have the in-house expertise and capabilities for lens and sensor board design, manufacturing, and testing to deliver a fully tested sensor module.
Active Alignment Capabilities
To achieve the highest system performance when pairing a high-quality lens with a high-resolution sensor, we recommend that our customers consider an active alignment process. Applying a fully automated 6-axis active alignment in mass production increases yield, shortens cycle times, improves system performance, and lowers part-to-part variance.
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