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Containing many problems and solutions, this book will be of great use to undergraduate and graduate students of optometry, optical design, optical engineering, and visual science, and to professionals working in these and related fields. Part III Physical optics and physical optical instruments.

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Part IV Ophthalmic instruments. Part V Aberrations and image quality. Part VI Visual ergonomics.

Part II Geometrical optical instruments or systems. In general, resolution is proportional to the price of the lens and is inversely proportional to the depth of field. It is therefore important to specify only the minimum feature size that is needed so that the cost of the lens is at a minimum and the depth of field requirement can be met.

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It is important to choose a sensor that will have a pixel size that will satisfy your resolution and depth of field requirements. The pixel size and the minimum feature size will determine the required magnification of the lens which is equal to the pixel size divided by the minimum feature size. Since magnification is also equal to the image distance divided by the object distance, the image distance can then be found.

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These values can then be used with the thin-lens formula to determine the focal length of the lens that satisfies the specifications. Field of view is the maximum object field that will be imaged by the system. This will be limited by the camera sensor size.

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Larger sensor sizes mean a greater FOV. Since cameras come in standard sizes, it is a good idea to select the camera sensor early on in the development process and determine your other specifications from the sensor size used.

Below is a table of standard aspect ratio camera formats and their dimensions. It is important that your optical engineer understands what you are specifying, so the more information the better when specifying FOV.