Dan Gray
How does the eye work?
The human eye is a complex organ and can be thought of as one of the most advanced and capable vision systems in existence. What camera...
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Dan Gray
How to achieve optimal lens and image sensor matching
Digital camera technology was first developed by Kodak in 1975. Since then, digital cameras have become so mainstream, that in 2022 there...
Dan Gray
Deep Thoughts: How Depth of Field Impacts Images
Depth of field (DOF) is a measure of the range of distances from a lens that appears to be in focus. This range varies depending on the...
Dan Gray
Why is the chief ray angle important?
What is the lens chief ray angle? The lens chief ray is the ray path from an off-axis point that passes through the center of the...
Dan Gray
How to ensure your lens designs are manufacturable
Are your lens designs coming back from suppliers as "not manufacturable"? Modern optical design software such as Zemax and CodeV are...
Dan Gray
What the f-number!
The term "f-number" can be confusing, but it's quite simple if you think of it in terms of its three main characteristics: image...
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DAN GRAY
Passionate about optics and product development
This is a blog covering topics in optics, photonics, product development, engineering, project management and leadership. I started this site with the goal of offering readers a glimpse into my thoughts and experiences. Take some time to explore the blog and see for yourself what makes you curious and eager. Read on and enjoy!
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