摘要:
Novel fluorine-modified acid anhydrides of formula (1) are useful curing agents typically in epoxy resin compositions for encapsulating semiconductor devices. ##STR1## R.sup.1 is a hydrogen atom, substituted or unsubstituted monovalent hydrocarbon group, hydroxyl group, alkoxy group or alkenyloxy group. Rf is a divalent perfluoroalkylene or perfluoropolyether group of the general formula (2): ##STR2## wherein l is an integer of 0 to 8, k and m are integers of 0 to 15, j and n are 0 or 1, with the proviso that j, k, l, m and n are not equal to 0 at the same time.
摘要:
A novel quaternary phosphorus compound is a salt between tetraphenyl borate and a phosphonium having an aromatic group attached to a phosphorus atom through an oxygen atom. It is blended with an epoxy resin as a curing catalyst to form an epoxy resin composition which flows smoothly and quickly cures into a product having improved moisture resistance and adhesion.
摘要:
In a light transmissive epoxy resin composition comprising (A) an epoxy resin and (B) a curing agent are blended (C) an organic phosphorus anti-discoloring agent and (D) silica-titania glass beads surface treated with an organic silicon compound. The composition restrains coloring in composition form and discoloration in cured form while curing into clear low stressed products having high light transmittance. Optical semiconductor devices encapsulated with the cured epoxy resin composition are reliable.
摘要:
An illumination apparatus includes: a red light valve configured to modulate red component light according to a red input signal; a green light valve configured to modulate green component light according to a green input signal; a blue light valve configured to modulate blue component light according to a blue input signal; a fourth color light valve configured to modulate a fourth color component light; and a color combiner configured to combine light emitted from the red light valve, the green light valve and the blue light valve. The fourth color component light emitted from the fourth color light valve enters a certain light valve, which is any one of the red light valve, the green light valve and the blue light valve.
摘要:
A projection-type image display device includes three light sources respectively configured to emit a different colored outgoing light, a light combining unit configured to combine outgoing lights, and a projection unit configured to project a combined light combined by the light combining it. The projection-type image display device includes a first cooler configured to cool a first light source of the three light sources, and a second cooler configured to cool a second and a third light source of the three light sources except the first light source.
摘要:
An apparatus for detecting the displacement of a movable member of an electronic musical instrument. The apparatus has superior mechanical durability compared to displacement sensors of the past and can withstand long-term use. The apparatus includes a sensor that provides a detectable electrical characteristic having a value and a spring that, when compressed upon displacement of the movable member acts with the sensor, causing the value of the electrical characteristic to change. The value of the electrical characteristic represents the amount of displacement of the movable member and is used by a controller of the electronic musical instrument.
摘要:
A light source controller includes a light source driver, a light amount sensor, a memory configured to store property information indicating a relationship between the drive current and the outgoing light amount for each level of the environmental temperature of the solid-state light source, and a controller configured to control the drive current supplied from the light source driver. The controller obtains the property information corresponding to the environmental temperature of the solid-state light source according to the relationship between the drive current and the outgoing light amount, and controls the drive current according to the obtained property information so as to bring the outgoing light amount close to a target light amount.
摘要:
Provided are a light emitting control device, computer readable memory device, and method to control a light emitter associated with a pad capable of being struck to produce a sound. In response to detecting a striking of the pad, a tone associated with the pad is produced. A level of the tone produced is determined and a level meter brightness is determined based on the determined level of the tone. An output brightness for the light emitter is calculated associated with the struck pad using the determined level meter brightness and a brightness change pattern. The light emitter associated with the pad is controlled according to the determined output brightness.
摘要:
A method for producing an optical element having a three-dimensional structural part that can resolve problems associated with deterioration of optical characteristics that is caused by variations in the element shape in the conventional process and poor endurance caused by insufficient joining strength and the optical element produced by the method are provided. A method for producing an optical element configured by joining at least a first optical member and a second optical member formed from an oxide material includes the processes of forming a refractive index periodic structural part with a period equal to or less than a visible light wavelength on at least one of the first optical member and the second optical member, forming a joining layer composed of an oxygen-deficient oxide on the first optical member and the second optical member, tightly joining the first optical member and the second optical member by the joining layer, and oxidizing the joining layer after the tight joining.
摘要:
There are provided a write light valve for generating image-writing light by modulating write light, a driver for writing images into the write light valve based on image data, read light valves for each color for generating respective color image lights by modulating each received color illumination light, an imaging lens group for guiding the image-writing light emitted from the write light valve to the respective read light valves, a dichroic cube for combining together color image lights emitted from the respective read light valves, a projection lens for projecting each color image light combined together. The imaging lens group has a distortion aberration which reduces or cancels out a distortion aberration of the projection lens.