Patent ID: 11933943
Assignee: LAMINATED FILM LLC
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A method of manufacturing a stack of peelable lenses to have a target peel strength, the method comprising:
producing a first stack of lenses, said producing the first stack including:
providing a lens, the lens initially defining an outermost lens of the first stack; and
performing the following sequence of steps one or more times:
coating the outermost lens of the first stack with an adhesive coating;
heating the adhesive coating to evaporate at least some solvent of the adhesive coating and to initiate curing of the adhesive coating;
exposing the adhesive coating to ultraviolet light to continue curing of the adhesive coating; and
laminating an additional lens onto a surface of the adhesive coating, the additional lens redefining the outermost lens of the first stack;

producing a second stack of lenses, said producing the second stack including:
providing a lens, the lens initially defining an outermost lens of the second stack; and
performing the following sequence of steps one or more times:
coating the outermost lens of the second stack with an adhesive coating;
heating the adhesive coating to evaporate at least some solvent of the adhesive coating and to initiate curing of the adhesive coating;
exposing the adhesive coating to ultraviolet light to continue curing of the adhesive coating; and
laminating an additional lens onto a surface of the adhesive coating, the additional lens redefining the outermost lens of the second stack;

coating the outermost lens of the first stack with an adhesive coating;
heating the adhesive coating that is coated on the outermost lens of the first stack to evaporate at least some solvent of the adhesive coating and to initiate curing of the adhesive coating;
after said heating the adhesive coating that is coated on the outermost lens of the first stack, exposing the adhesive coating to ultraviolet light to continue curing of the adhesive coating, wherein parameters of the heating and the exposing of the adhesive coatings are selected such that the adhesive coatings are only partially cured to result in a peel strength of the stack that is less than the target peel strength;
after said exposing the adhesive coating that is coated on the outermost lens of the first stack, laminating the second stack of lenses onto a surface of the adhesive coating to combine the first and second stacks into a combined stack of lenses; and
exposing the combined stack of lenses to an electron beam to sterilize the combined stack of lenses and to continue curing of the adhesive coatings contained within the combined stack of lenses.