摘要:
An ultraviolet absorbing paint is provided. The ultraviolet absorbing paint includes an oxide precursor of at least one transition metal selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ce, suitably an ultraviolet absorbing paint. The oxide precursor of the transition metal is a metal salt, a metal acid salt, or an organic metal compound of at least one transition metal selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ce.
摘要:
Disclosed is a curable resin composition that has significantly high transparency in the UV region, UV resistance and heat resistance, does not cause cracking, peeling or coloration even when used for sealing a UV LED to which high power is applied, and inhibits shrinking during curing. The curable resin composition includes 20-85 wt % of an alkoxy oligomer having a specific structure and present as liquid at room temperature and 15-80 wt % of a silicone resin present as solid at room temperature. The curable resin composition preferably includes 0.1-20 parts by weight of phosphoric acid, as a catalyst, based on 100 parts by weight of the combined weight of the alkoxy oligomer and the silicone resin.
摘要:
Provided is a light irradiation apparatus. The light irradiation apparatus which irradiates light of a line shape extending in a first direction and having a predetermined line width in a second direction perpendicular to the first direction, includes a substrate, a plurality of light sources placed on a surface of the substrate side by side at a predetermined interval along the first direction, with a direction of an optic axis being a third direction perpendicular to the first and second directions, a plurality of heat radiation fins standing erect on an opposite surface of the substrate and arranged in rows in the first direction, and N cooling mechanisms placed side by side along the first direction to cover a plurality of heat radiation fins, in which N is an integer greater than or equal to 2. Each of the cooling mechanisms includes a case and a cooling fan.
摘要:
The near-field extinction ratio of a polarizing glass is increased. A polarizing glass contains anisotropically shaped metal particles oriented and dispersed in a glass substrate, which contains 0.40-0.85 wt % Cl relative to the entire glass substrate. The Vickers hardness ranges from 360 to 420, the Knoop hardness number ranges from 400 to 495, or the glass substrate contains at least one component selected from the group consisting of Y2O3, La2O3, V2O3, Ta2O3, WO3, and Nb2O5. The content of each of the selected components ranges from 0.05-4 mole percent, and if a plurality of the components are selected, the total content of the components is 6 mole percent or less.
摘要:
UV-resistant materials are disclosed that include at least one self-supporting film of UV-resistant clay particles and that are substantially non-reactive to incident UV radiation. An exemplary material is substantially non-transmissive to at least one UV wavelength of less than 300 nm, can include a polymeric material for enhanced flexibility, and can include an additive that is non-transmissive to at least one UV wavelength of greater than 300 nm. The material can be multiple layers of respective clay films. The materials can be used to form UV-resistant devices such as seals, mounting cushions, and light-shields for use in any of various UV-illumination sources and process systems. An example UV-illumination source is an excimer laser. An example system is a light-CVD system.
摘要:
Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.
摘要:
An ultraviolet absorbing film, a light absorbing film, an optical element, an optical unit, and a light illuminating apparatus are disclosed. The ultraviolet absorbing film is provided on at least one surface of an optical element to reduce internal reflections therein and includes a transition metal oxide of a transition metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ce, and combinations thereof that contains no organic constituent. The ultraviolet absorbing film is formed by a process including applying an ultraviolet absorbing paint including an oxide precursor of the transition metal on at least one surface of the optical element; and a binder component or a solvent in which the oxide precursor is dissolved; and heating the coating to a predetermined temperature at which the oxide precursor forms the transition metal oxide and the binder or the solvent substantially completely decomposes or volatilizes.
摘要:
Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.
摘要:
Provided is a circuit board supporting structure capable of easily detaching a circuit board on a base. The circuit board supporting structure is configured to support a circuit board on a base, in which the base has a concave portion formed in a placement surface of the circuit board, and a rotational operation member configured to be rotatably accommodated in the concave portion and extend and retract in a direction perpendicular to the placement surface by a rotational operation, in which the circuit board has a through hole formed at a position corresponding to the concave portion, in which the rotational operation member has a reference surface formed approximately in parallel with the placement surface, and an operation portion formed on a rotational axis of the rotational operation member so as to be exposed from the through hole.