Gyōda, Japan
Gyōda, Japan

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Patent
Polarization Solutions Llc and IWASAKI Electrical CO. | Date: 2015-02-05

A light irradiation device for irradiating polarized light having a light source, a device-side polarizer for polarizing light of the light source and a measuring device that measures a polarization axis of the light polarized by the device-side polarizer is provided, an extinction ratio of the device-side polarizer being set to 100:1 or more.


Patent
Iwasaki Electrical Co. | Date: 2016-09-07

Problem to be Solved Heat of a lamp is enabled to be efficiently radiated by heat radiation fins. Solution An LED lamp 1 is equipped with a plurality of light source units 13 each having a mounting board on which a light emitting element is mounted, on a front surface of a substrate 22, the plurality of light source units 13 are disposed around an axis C of the LED lamp 1 with back surfaces 22d of the respective substrates 22 facing inside, and gaps G1 left from one another, and heat radiation fins 29 that are disposed to be inclined with respect to an axial direction of the axis C are provided on the back surface 22d of the substrate 22.


Patent
Iwasaki Electrical Co. | Date: 2015-10-28

The purpose of the present invention is to provide an LED lamp equipped with a novel cooling and heat radiation means. The lamp comprises: a plurality of LED elements (18); a light source support (14) extending along the axial line of a lamp while supporting the LED elements on the lateral surface; and a hermetically sealed glass container (6) surrounding the light source support and sealing in a low molecular weight gas as a cooling gas. The light source support surrounds a cooling gas flow channel along the axial line of the lamp and, in addition to a gas inlet and outlet located on both ends of the light source support, has gas inlets and outlets (26) between both ends.


Patent
Iwasaki Electrical Co. | Date: 2015-06-10

Provided is a ceramic metal halide lamp that can achieve a correlated color temperature on the order of 2500 K without sacrificing lamp life. An additive contains Thallium iodide (TlI), Sodium iodide (NaI), Calcium iodide (CaI_(2)), Lithium iodide (LiI), and a rare earth metal iodide, and is further configured in a manner so that the correlated color temperature is 2250-2750 K, the bulb wall loading is 20-30 W/cm^(2), and the rated output is 35-400 W. When the mole ratio of Sodium iodide to the total number of moles of the additive is M(NaI) (in mol%) and the sum of the mole ratio of the rare earth metal iodide (ReI_(3)) and the mole ratio of Thallium iodide (TlI) is M(ReI_(3)+TlI) (in mol%), 4 < M(NaI)/M(ReI_(3)+TlI) < 16 and 2 mol% < M(ReI_(3)+TlI) < 9 mol%.


Patent
Eye Lighting Systems Corporation and IWASAKI Electrical CO. | Date: 2015-06-22

A lamp achieves high output power like an HID lamp by using a light emitting element(s) as a light source. A mount board having LED mounted thereon is provided on the surface of a base member, and there are provided plural flat plate type light source units arranged around an axial line while the back surfaces thereof faces inwards, and a support member provided on the axial line. The plural light source units are supported on the support member, and a space through which air flows is provided at the back surface side of each base member.


Patent
Iwasaki Electrical Co. | Date: 2016-09-07

The invention provides a light source that is favorable for the lighting of fresh foods required to show colors of meat, vegetables and the like more vividly than a high-chroma and high-color-rendering type of high-pressure sodium lamp and a method of manufacturing the same. In a light source according to the present embodiment of the present invention comprises at least a light emitting portion to emit visible rays;the light emitting portion is provided with such a luminous spectrum that if a wavelength region of 380 to 780 nm of visible light is split into a first wavelength region of a violet-bluish colors of wavelengths of 380 to 490 nm, a second wavelength region of greenish colors of wavelengths of 490 to 570 nm, a third wavelength region of yellowish colors of wavelengths of 570 to 590 nm, and a fourth wavelength region of orange-reddish colors of wavelengths of 590 to 780 nm, anda distribution ratio of an integrated value of energy strength of light from the light emitting portion calculated for each of the four wavelength regions is set to be y1 : y2 : y3 : y4 (where y1 + y2 + y3 + y4 = 100), the following formula is obtained.


Patent
IWASAKI Electrical CO. and Kochi University | Date: 2014-09-10

An imaging system includes: a first lighting device for irradiating an imaging target object with visible light; a second lighting device for irradiating the imaging target object with near-infrared light; and an image sensor for photodetecting visible light caused by the visible light and coming from the imaging target object and fluorescence caused by the near-infrared light and coming from the imaging target object during a predetermined shutter open period every frame of a predetermined period. The image sensor outputs photodetection signals corresponding to photodetection amounts of the visible light and the fluorescence. The imaging system also includes a controller that generates a composite image of a visible image and a fluorescence image based on the photodetection signals, and has a lighting controller that turns on the second lighting device with optical power corresponding to the shutter open period in synchronism with the shutter open period.


Patent
Iwasaki Electrical Co. | Date: 2015-06-10

Provided is a ceramic metal halide lamp that is favorable for illuminating fresh foods in the manner of a high-chroma, high-color-rendering, high-pressure sodium lamp. A method for producing the ceramic metal halide lamp, which has a light-emitting tube formed from a translucent ceramic in which are sealed a starting noble gas, mercury, and an additive, and a translucent outer tube that houses the light-emitting tube, contains: a wavelength region splitting step for splitting the wavelength region (380-780 nm) of visible light into the four wavelength regions of a violet-blue color system, a green color system, a yellow color system, and an orange-red color system; and an additive setting step for setting the composition and amount added of the additive in a manner so that the ratio of the integrated value of the energy strength of light from the light-emitting tube calculated for each of the four wavelength regions is 6 3 : 18 5 : 6 3 : 70 11 (where the total value is 100).


Patent
Iwasaki Electrical Co. | Date: 2016-07-13

It is an object of the invention to provide a halogen lamp of which the middle portion of filament can be supported by support rods so as not to sag under its own weight, and of which the support rods are not deformed so as to bend by filament weight as the rod is not weakened by influence of high heat ray emitting from filament. A halogen lamp providing, in a glass envelope (2) positioned horizontally at the lamp installing, a coil filament (3), a pair of short and long electric supply rods (4A, 4B) which support a front end and a rear end of the filament and are connected to them, and a pair of short and long support rods (L1, L2) arranged in parallel in a lower side of the filament (3) to support two points (P1, P2) which are back and forth in longitudinal middle area of the filament (3) to diagonal upward direction from the right and left underside of the filament.


Patent
Iwasaki Electrical Co. | Date: 2016-11-02

The purpose of the present invention is to provide an LED lamp comprising a novel cooling/radiation means. This LED lamp comprises: a plurality of LED elements; a plurality of light-source supporting bodies having each of the plurality of LED elements mounted thereon and extending along the lamp axial line; and a hermetically sealed glass container encasing the light-source supporting bodies. The plurality of light-source supporting bodies are arranged so as to form an n-angle shape (n = a natural number such as 3, 4, ....), as viewed from a cross-section perpendicular to the lamp axial line, such that a gas flow path is formed that flows along the lamp axial line between both end sections thereof. The light-source supporting bodies have a ventilation structure that penetrates between an LED element mounting surface and a rear surface, such that an inflow and outflow of gas in the gas flow path is formed.

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