9902.17.16 - Projection lenses, each with focal length of 19.68 mm or more but not over 132.0 mm, throw ratio of 0.28:1 or more but not over 7.10:1 and focus range optical 0.45 m or more but not over 40 m, the foregoing not exceeding 5.4 kg in weight (provided for in subheading 9002.11.40)

This HTS category, 9902.17.16, specifically classifies projection lenses that meet a precise set of optical and physical specifications. These lenses are characterized by a defined focal length range (19.68 mm to 132.0 mm), a specific throw ratio (0.28:1 to 7.10:1), and an optical focus range (0.45 m to 40 m). Furthermore, the weight of these projection lenses must not exceed 5.4 kg. These lenses are ultimately categorized under subheading 9002.11.40 of the HTS.

Given that Chapter 99 pertains to temporary legislation and special provisions, this specific subheading functions as a targeted classification for a particular type of projection lens that might otherwise fall under more general optical instrument headings. Its existence signifies a need for precise identification and potential tracking or tariff treatment distinct from broader categories of lenses or optical components.

As a leaf node within the HTS structure, 9902.17.16 does not have further subdivisions. Therefore, the key to accurately classifying goods under this heading lies in meticulously verifying all the stipulated physical and optical parameters against the specifications of the projection lens in question. Any deviation from the defined focal length, throw ratio, focus range, or weight would necessitate reclassification into a different HTS code.