83mm Fine Focus High Track Stand,ZJ-627
Specification:
Scope holder:Φ83mm
Track Length:520mm
Base Dimensions:320x305x16mm
Coarse/Fine Focus Type: Coaxial Coarse/Fine Focus
Travel Distance:385mm
Net weight: 3.373kg (7.34lbs)
Dimensions: 320x305x341mm
Industry product knowledge
optical lnes design
Manufacturing costs and delivery schedules are also a major part of optical design. The price of an optical glass blank of given dimensions can vary by a factor of fifty or more, depending on the size, glass type, index homogeneity quality, and availability, with BK7 usually being the cheapest. Costs for larger and/or thicker optical blanks of a given material, above 100–150 mm, usually increase faster than the physical volume due to increased blank annealing time required to achieve acceptable index homogeneity and internal stress birefringence levels throughout the blank volume. Availability of glass blanks is driven by how frequently a particular glass type is made by a given manufacturer, and can seriously affect manufacturing cost and schedule.
