Back to results
US 2002/0064733 A1Published application
Film having a long wavelength filter
OwnerLorin C. Nashinventor
Life of this patent
Estimating the term…
Abstract
A photographic film having a long wavelength (LW) filter is disclosed. The LW filter is capable of blocking substantially all light in the infra-red (IR) portion of the light spectrum. In at least one embodiment, the LW filter is further capable of transmitting light in the visible part of the light spectrum. A LW filter may be placed in various positions on a photographic film, and/or included in one of a photographic film's emulsion layers.
Claims23
A photographic film comprising:
- at least one light sensitive emulsion layer capable of forming a latent image upon exposure to light;
- and
- at least one long-wavelength (LW) filter, said at least one LW filter capable of blocking transmission of substantially all light in the infra-red (IR) portion of the light spectrum.
A method of constructing photographic film, the method comprising:
- depositing at least one light sensitive emulsion layer onto a photographic film, the at least one light sensitive emulsion layer capable of forming a latent image upon exposure to light;
- and
- depositing at least one long-wavelength (LW) filter onto the photographic film, the at least one LW filter capable of blocking transmission of substantially all light in the infra-red (IR) portion of the light spectrum.
A color photographic film comprising:
- a plurality of light sensitive emulsion layers capable of forming a latent image upon exposure to light;
- at least one antihalation layer;
- and
- at least one long-wavelength (LW) filter capable of blocking transmission of substantially all light in the infra-red (IR) portion of the light spectrum.
1 more element
Dependencies are inferred from the claim text.