What is the seg drop when A=65mm, B=56mm, DBL=15mm, and the requested Seg Ht is 25mm?

What is the seg drop when A=65mm, B=56mm, DBL=15mm, and the requested Seg Ht is 25mm?

• A. 2mm below geometric center
• B. 3mm below geometric center
• C. 1mm below geometric center
• D. 4mm below geometric center

Answer: (B)

To determine the seg drop, it is important to understand how it relates to the measurements given. In this specific scenario, the seg drop is calculated based on the relationship between the heights and widths of the lens. The first step is to find the geometric center of the lens, which can be calculated by adding the A measurement and the B measurement together, then dividing by 2: Geometric Center = (A + B) / 2 = (65mm + 56mm) / 2 = 60.5mm Next, since the frame's DBL (distance between lenses) is provided, this can be factored into the placement of the segment height. The request specifies a seg height of 25mm from the bottom of the frame. The seg drop itself refers to how far below the geometric center the seg height is set. To find the seg drop specifically, you would subtract the requested seg height (25mm) from the geometric center (60.5mm): Seg Drop = Geometric Center - Requested Seg Height = 60.5mm - 25mm = 35.5mm However, to find the drop below the geometric center, you have to look for how this distance compares to

To determine the seg drop, it is important to understand how it relates to the measurements given. In this specific scenario, the seg drop is calculated based on the relationship between the heights and widths of the lens.

The first step is to find the geometric center of the lens, which can be calculated by adding the A measurement and the B measurement together, then dividing by 2:

Geometric Center = (A + B) / 2 = (65mm + 56mm) / 2 = 60.5mm

Next, since the frame's DBL (distance between lenses) is provided, this can be factored into the placement of the segment height. The request specifies a seg height of 25mm from the bottom of the frame.

The seg drop itself refers to how far below the geometric center the seg height is set. To find the seg drop specifically, you would subtract the requested seg height (25mm) from the geometric center (60.5mm):

Seg Drop = Geometric Center - Requested Seg Height

= 60.5mm - 25mm

= 35.5mm

However, to find the drop below the geometric center, you have to look for how this distance compares to