Many applications require that CMOS or CCD imaging lenses be optimized for a finite object, that is, for an object distance closer than “infinity.” The practical definition of infinity varies based on individual use-case requirements and specific lens being used. It can be defined in different ways, such as spot size, through-focus MTF, etc. As a general rule of thumb, and depending on F/#, infinity is generally 100-200x the focal length (EFL) of the lens…
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Innovation, Performance, Support and Value
Sunex specializes in high-performance lenses and customized solutions from design to manufacturing. We have built a high quality manufacturing organization (ISO9001, ISO14001 and TS16949 certified) enabling us to deliver cost-effective optics flawlessly manufactured with outstanding reliability to customers worldwide. We take pride in providing in-depth technical support to our customers.
“We are getting great feedback from the field on the camera image quality, people are saying things like spectacular and magnificent. This, of course, starts with the excellent lens you are delivering.”
“Initial evaluation indicates a contrast of 40-50% with our object. This is better than our requirement of 30%. This is for each of the three images at 520, 550, and 630 nm without re-focusing. This is excellent performance.”
“Thanks guys, I am very satisfied.!!! This lens is a big improvement in our digital product.”
Knowledge Center Recent Articles
The general guideline for cleaning optics is “if it’s not dirty, don’t clean it”. Handling optics increases their chances of getting dirty or damaged, so you should clean optics only when necessary. Both the proper cleaning products and proper methods are equally important to cleaning the optic. There are different methods for cleaning and certain specialized optics require particular attention and change in procedures. Below are general guidelines to be used as a reference only…
One of the questions we frequently get at Sunex is some variation of, “Can I modify a standard lens, and what does this entail?” The answer to this question is, “Yes!” depending on what you would like to modify, of course! In general, there are four categories of what can potentially be modified on a standard lens: External Mechanical Features Coatings/Filters F/# Specifications While first-order lens parameters which are inherent to the optical design typically…
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Products & Solutions
Fisheye Lens for DSLR Camera
SuperFisheye® lenses with a field of view of 185 degrees are designed for digital SLR cameras such as the Canon 50D and Nikon D300. These lenses are useful for producing 360 degree panoramic images and fully immersive images (similar to Google Street View). We also provide panoramic rotators and proprietary Dewarper software for these lenses.
Industrial Imaging Lenses
These lenses are used for finite object imaging applications such as face/object recognition, barcode capturing, machine vision, and bio-medical securities. Their small size is compatible with a variety of hand-held products. We can also integrate auto-focus technologies with these lenses.
Security & Surveillance
These lenses are designed for security/ surveillance cameras where low light and day/night operations are important. The lenses have a field of view up to 185 degrees (superfisheye). Certain lenses are also spectrally optimized to cover the visible and the near infrared spectrum (NIR). We also provide day/night exchangers and special IR cut-off filters.
Typical video-conferencing cameras require lenses with high image quality and low distortion. For high frame rates in low light situation, a lens with low f/# is required. We offer lenses with advanced optical technology incorporating high-index materials and aspherical elements in various imager sizes. We also provide IR cut-off filters and optical low-pass filters as part of a complete optical solution.
If off-the-shelf optics does not meet your application requirement, we can also work with you to design, prototype and mass-produce custom optics tailored to your specific needs. We manufacture quality optics in our facilities in China and provide professional support from our USA office.
Notice to all Sunex US employee regarding Families First Coronavirus Response Act (FFCRA or Act). Congress has recently passed this act to protect our employee’s health and family during COVID-19 crisis. Please read this notice for details.