Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
197 words
In a lighting system for illuminating an instrument display the combination comprising a. an instrument display, b. a transparent wedge shaped body positioned in front of said display for illuminating said display by light emitted rearwardly from said wedge after multiple internal reflections, c. a light source so positioned with respect to the thick portion of the wedge for introducing light into the wedge, d. means for controlling transmission of light emitted frontwardly from said wedge to minimize glare and utilize selected portions thereof to illuminate selected marking on the instrument face, including e. shielding means positioned in front of said wedge to block forwardly emitted light from said wedge, said shielding means including means defining display openings extending therethrough and aligned with said display, and further opening means extending through said shield representing index or nomenclature marks so that a portion of the forwardly emitted light is transmitted through said further openings to illuminate said marks with forwardly emitted light. f. At least one light transmission control element positioned between the wedge and said further openings to control the characteristics of the light transmitted through the further openings and the illumination of the marks represented thereby.
Claim 2
Dependent Claim
197 words
In a lighting system for illuminating an instrument display the combination comprising a. an instrument display, b. a transparent wedge shaped body positioned in front of said display for illuminating said display by light emitted rearwardly from said wedge after multiple internal reflections, c. a light source so positioned with respect to the thick portion of the wedge for introducing light into the wedge, d. means for controlling transmission of light emitted frontwardly from said wedge to minimize glare and utilize selected portions thereof to illuminate selected marking on the instrument face, including e. shielding means positioned in front of said wedge to block forwardly emitted light from said wedge, said shielding means including means defining display openings extending therethrough and aligned with said display, and further opening means extending through said shield representing index or nomenclature marks so that a portion of the forwardly emitted light is transmitted through said further openings to illuminate said marks with forwardly emitted light. f. At least one light transmission control element positioned between the wedge and said further openings to control the characteristics of the light transmitted through the further openings and the illumination of the marks represented thereby.
Claim 3
Dependent Claim
32 words
The lighting system according to claim 1 wherein said display means comprises a plurality of counter wheels and said display opening includes a plurality of openings aligned with said plurality of wheels.
Claim 4
Dependent Claim
33 words
The lighting system according to claim 1 wherein said wedge includes opening means extending through the thick portion of the wedge and said light source is positioned in the opening in the wedge.
Claim 5
Dependent Claim
25 words
The lighting system according to claim 1 in which the light transmission control element controls the intensity of the light transmitted through the further openings.
Claim 6
Dependent Claim
26 words
The lighting system according to claim 1 in which the light transmission controL element controls the spectral characteristic of the light transmitted through the further openings.
Claim 7
Dependent Claim
29 words
The lighting system according to claim 1 in which the light transmission control element controls both the intensity and spectral characteristic of the light transmitted through the further openings.
Claim 8
Dependent Claim
29 words
The lighting system according to claim 2 including light transmission control elements positioned between the wedge and said further openings to control the characteristics of the light transmitted therethrough.
Claim 9
Dependent Claim
19 words
The lighting system according to claim 7 wherein said further openings represent nomenclature marks identifying the parameter being measured.
Claim 10
Dependent Claim
15 words
The lighting system according to claim 8 wherein said further openings also include further indeces.