44 results about "Blue green colour" patented technology

A white beam with high color-rendering index is formed by uniting a collimated red beam and a collimated blue-green beam, the latter having as its source a blue LED with a green phosphor. The white beam is formed by a prism with an amber low-pass dichroic filter. The prism cross-section can be either a square or an equilateral triangle. The triangular prism can have one third of its mass reduced by stepped facets. Both types of prism can be elongated to accommodate multiple collimators. Switching between white, red, and blue-green allows application to police vehicles.

There is provided a white light illumination system including a radiation source, a first luminescent material having a peak emission wavelength of about 570 to about 620 nm, and a second luminescent material having a peak emission wavelength of about 480 to about 500 nm, which is different from the first luminescent material. The LED may be a UV LED and the luminescent materials may be a blend of two phosphors. The first phosphor may be an orange emitting Eu2+, Mn2+ doped strontium pyrophosphate, (Sr0.8Eu0.1Mn0.1)2P2O7. The second phosphor may be a blue-green emitting Eu2+ doped SAE, (Sr0.90-0.99 Eu0.01-0.1)4Al14O25. A human observer perceives the combination of the orange and the blue-green phosphor emissions as white light.

The invention provides a liquid ejecting apparatus. A first head unit has: a first portion; a second portion connected to the first portion on a first side in the first direction and having a shorterwidth in the second direction than the first portion; and a third portion connected to the first portion on a second side in the first direction, having a shorter width in the second direction, and provided at a position different from the second portion in the second direction. A second head unit has: a fourth portion; a fifth portion connected to the fourth portion on the first side and having ashorter width in the second direction; and a sixth portion connected to the fourth portion on the second side, having a shorter width in the second direction than the fourth portion, and provided ata position different from the fifth portion in the second direction, a portion of the first head, a portion of the second head, a portion of the third head, and a portion of the fourth head being located on the second portion, the third portion, the fifth portion, and the sixth portion, respectively, wherein the first color is blue green and the third color is magenta.

The invention discloses an abalone shell pigment and a preparation method thereof. An abalone shell is adopted as a raw material, an algae pigment at the outer layer of the abalone shell is extracted by adopting an acid solution, and the abalone shell pigment is processed in decalcifying, purifying and precipitating manners. The abalone shell pigment has the characteristics of acid solubility, alkali insolubility, water insolubility and hydrophilic organic solvent insolubility. E490<1%>1cm of a blue-green pigment is greater than or equal to 75, E600<1%>1cm of a reddish-brown pigment is greater than or equal to 50, the calcium content is smaller than or equal to 2.5%, the total nitrogen is smaller than or equal to 7.5%, and the total sugar is smaller than or equal to 5.0%. The abalone shell pigment can be efficiently extracted under the conditions of room temperature, low acid concentration and short time, active ingredients of the abalone shell pigment are reserved to the maximal extent by the processing procedures of purifying, precipitating, washing, drying and the like; the abalone shell pigment is novel in conception, abundant in raw materials, high in production efficiency, low in preparation cost, simple in technology, green and environment-friendly, convenient to implement, and great in generalization performance, and a new path is found out for high-valued utilization of the abalone shell.