Frameless light modifying element

An optical film lens system for a light fixture, the optical film lens system comprising:

• a lens apparatus configured for transmissively modifying light from a light fixture, the lens apparatus comprising:
• two elongated frame members;
• a piece of optical film configured to transmissively modify light from a light source, the piece of optical film comprising:
• a substrate composition that allows the piece of optical film to be folded without breaking;
• two opposing support edges, wherein an area between the two opposing support edges defines a lens plane, and wherein each opposing support edge is configured to attach to one of the two elongated frame members;
• two opposing non-supported edges of the piece of optical film that are configured without any structural support;
• wherein the two elongated frame members are configured to attach to two corresponding opposing edges of an aperture of the light fixture such that:
• the lens plane of the optical film piece is freely and flexibly suspended across the aperture of the light fixture;
• and
• the two non-supported edges of the piece of optical film are not attached to and not supported by the light fixture.

A lens apparatus:

• configured to transmissively modify light from a light emitting device, the lens apparatus comprising:
• at least one piece of optical film configured for transmissively modifying light and configured to attach to a light emitting device in proximity to an aperture of the light emitting device, the at least one piece of optical film comprising:
• a substrate that allows the at least one optical film piece to be folded without breaking, the substrate having a first major surface, wherein the first major surface comprises a lens plane;
• two or more major edges;
• four corner regions;
• one or more of a score line, perforated line and crimp line adjacent to at least a portion of at least the two or more major edges;
• and
• edge trusses configured along all or a substantial portion of the at least two major edges of the at least one piece of optical film, wherein each edge truss comprises one or more edge truss sides configured from folds in the at least one piece of optical film along the one or more of score lines, perforated lines and crimp lines, wherein at least one edge truss side of each edge truss is configured at an angle relative to the first surface of the at least one piece of optical film;
• and
• wherein each edge truss is configured to impart support to the lens apparatus and to resist deflection of the lens apparatus to enable the lens apparatus to be disposed in a substantially flat configuration without requiring tensioners or tensioning from an external frame when suspended along all, or a portion of the periphery of the first surface of the optical film piece, or suspended from four or more points on two or more edge trusses.

A lens apparatus:

• configured to transmissively modify light from a light emitting device, the lens apparatus comprising:
• at least one piece of optical film configured for transmissively modifying light and configured to attach to a light emitting device in proximity to the aperture of the light emitting device, the at least one piece of optical film comprising:
• a substrate that allows the at least one optical film piece to be folded without breaking, the substrate having a first major surface and a second major surface that opposes the first major surface, wherein the first major surface comprises a lens plane;
• two or more major edges;
• four corner regions, each having one or more associated minor edges defining one or more corner cuts that define a corner cutout;
• an edge truss configured on the two or more major edges, wherein each edge truss is disposed towards the second major surface of the at least one piece of optical film;
• and
• each edge truss comprises one or more sides configured from a corresponding fold in the at least one piece of optical film, wherein at least one of the one or more sides of each edge truss is configured at an angle relative to the first major surface of the at least one piece of optical film to impart support to the lens apparatus and to resist deflection of each edge truss.