144 results about "Blue green color" patented technology

An illuminating device able to easily visualize a pedestrian, etc. on a footway by the driver of an automobile is provided. The illuminating device has a footway side light source portion for irradiating light of spectral characteristics rich in blue-green color light to the footway, and a roadway side light source portion for irradiating light of spectral characteristics rich in green-red color light to a roadway. Further, the spectral characteristics of the light irradiated from the footway side light source portion are set such that a value Ip obtained by the following formula (1) is greater than a value IC obtained by the following formula (1) from the spectral characteristics of the light irradiated from the roadway side light source portion.I=∫ab⁢S⁡(λ)·V′⁡(λ)⁢⁢ⅆλ∫380780⁢S⁡(λ)·V⁡(λ)⁢⁢ⅆλ(1)

A fluorescent lamp including a phosphor layer comprising a phosphor blend including four or more optimized phosphors emitting within a specific spectral range to optimize luminosity for a given color rendering index (CRI) and color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blue phosphor having an emission peak at 440–490 nm, a blue-green phosphor having an emission peak at 475–525 nm, a green phosphor having an emission peak at 515–550 nm, an orange phosphor having an emission peak from 550–600 nm, a deep red phosphor having an emission peak at 615–665 nm, and a red phosphor having an emission peak at 600–670 nm.

The present invention provides a blue (blue-green) phosphor that has sufficient emission intensity in the wavelength region around 490 nm and that has high emission luminance at a temperature region reached during LED operation. The present invention also provides a white light-emitting device that uses a high-luminance green phosphor having an emission peak wavelength of 535 nm or greater and that has improved bright blue reproducibility.A phosphor having a chemical composition of general formula [1] has sufficient emission intensity in a wavelength region around 490 nm, and a white light-emitting device that uses such a phosphor has improved bright blue reproducibility.(Sr, Ca)aBabEux(PO4)cXd  [1](In general formula [1], X is Cl; c, d and x are numbers satisfying 2.7≦c≦3.3, 0.9≦d≦1.1 and 0.3≦x≦1.2; and a and b satisfy the conditions a+b=5−x and 0.12≦b / (a+b)≦0.4.)

An oxynitride phosphor consisting of a crystal containing at least one or more of Group II elements selected from the group consisting of Be, Mg, Ca, Sr, Ba and Zn, at least one or more of Group IV elements selected from the group consisting of C, Si, Ge, Sn, Ti, Zr and Hf, and a rare earth element being an activator R, thereby providing a phosphor which is excited by an excitation light source at an ultraviolet to visible light region and which has a blue green to yellow luminescence color that is wavelength converted.

The invention discloses a ratio fluorescence nano probe and application thereof. The characteristic that m-CDs can exclusively respond to ClO- is utilized, the m-CDs is used as a fluorescence probe, and [Ru(bpy)3]2+ is used as a reference reagent to establish the CDs@[Ru(bpy)3]2+ ratio fluorescence nano probe. After different concentrations of ClO- are added for reaction, the fluorescence color ofthe ratio fluorescence probe gradually changes from a blue-green color to a red color, so that the probe can be used for quantitative or semi-quantitative detection of the ClO-. In addition, the ratio fluorescence nano probe can be ingested into cells to achieve cell imaging, so that the probe is used for visual detection of ClO- reactive oxygen free radicals in the cells. The ratio fluorescencenano probe has the advantages of being simple in operation, wide in applicability, quick to react, capable of producing a variety of color changes and the like and can be used for multi-color, visualand online quantitative analysis of target objects.