Microscope-related: Objective lens

Infinity-corrected objective lenses are widely used in imaging and laser point focusing applications. Infinity-corrected objective lenses are microscope objective lenses that form images at infinity. These lenses are designed with a long working distance, allowing optical elements such as beam splitters and optical filters to be placed in the optical path. When using infinity-corrected objective lenses for imaging applications, a secondary lens called an imaging lens is required to focus the light collected from the specimen onto the image sensor. In laser applications, the use of an imaging lens is not necessary. Finite-conjugate objective lenses are widely used for simple microscope setups and OEM integration. Finite-conjugate objective lenses are microscope objective lenses that do not require an imaging lens (auxiliary lens) to focus on the specimen. These lenses are typically optimized for use in the visible spectrum. Finite-conjugate objective lenses are generally constructed using three lens elements, which helps reduce size and weight.

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