Mitsui Chemicals, Inc.

Yamamoto Chemicals, Inc.

Other

Mitsui Toatsu Chemicals, Incorporated

A School Corporation Kansai University

Kansai Paint Company, Ltd.

Visual Technology Laboratory Inc.

Taizo Nishimoto

Tsutami Misawa

Hisashi Tsukahara

Kenichi Sugimoto

Keisuke Takuma

Akira Ogiso

Takeshi Tsuda

Hideki Umehara

Shinobu Inoue

Tadashi Koike

Mitsunobu Yoshida

Yoshiro Tajitsu

Kazuhiro Tanimoto

Yojiro Kumagae

Kenichi Goto

Hitoshi Onishi

Toshihiro Masaoka

Shunsuke Fujii

Kenichi Kato

Kenji Mizoue

Genji Imai

Hideo Kogure

Akinori Nagatomo

Shin Fukuda

Yuji Inatomi

Tomoyoshi Sasakawa

Tomoyuki Okamura

Yoshiki Nakamura

Katsuhiko Koike

Noriaki Asada

Fumiharu Yamazaki

Toshihisa Kitagawa

Jun Tokuhiro

Ryousuke Nara

Shoko Matsumura

Norihiko Mihara

Sueko Kanaya

Shunsuke Murayama

Hiroaki Saigo

An analysis unit determines at least two boundaries by determining; in a coordinate system indicating a correlation between a luminance contrast value between a luminance of an attention portion and a luminance of a background portion, and a luminance average value of a visual target including the attention portion and the background portion; the boundary between a region where a subject has a visibility and a region where the subject does not have the visibility for each combination of stimulus values of a color stimulus of a visual target.

Visual function examination system and optical characteristic calculation system

A piezoelectric polymer material comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a DSC method of from 40% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation MORc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 &#x3bc;m, of from 40 to 700.

Piezoelectric polymer material and method for producing same

The invention provides a piezoelectric polymer material comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a DSC method of from 20% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation MORc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 &#x3bc;m, of from 40 to 700.

An optical recording medium having an organic dye layer as a recording layer on a substrate, wherein at least one benzobisazole-based compound represented by a general formula (1) is contained in the recording layer: (wherein substituents X and Y each independently represent an aryl group or a heteroaryl group, rings A and B each independently represent an oxazole ring or a thiazole ring, and Qand Qeach independently represent a hydrogen atom, a halogen atom or an alkyl group, with a proviso that, aryl group(s) or heteroaryl group(s) represented by the substituents X and Y each independently may be substituted by a halogen atom, a hydroxyl group, a cyano group, an amino group or a substituted or unsubstituted alkyl, aralkyl, aryl, alkenyl, alkoxy, aralkyloxy, aryloxy, alkenyloxy, alkylthio, aralkylthio, arylthio, alkenylthio, mono-substituted amino, di-substituted amino, acyl, alkoxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, alkenyloxycarbonyl, mono-substituted aminocarbonyl, di-substituted aminocarbonyl, acyloxy or heterocyclic ring group).

Benzobisazole compound and optical recording medium containing the compound

An optical recording medium having a recording layer which contains at least one compound selected from the group consisting of mono-, di-, and triazaporphyrin compounds optionally in the form of a metal complex; or an optical recording medium comprising a substrate and formed thereon at least a recording layer containing an organic dye as a main component, characterized in that the organic dye has a first maximum value of absorption at a wavelength &#x3bb;of 400 nm or less in the absorption spectrum and has a second maximum value of absorption at a longer-wavelength side than the &#x3bb;, and a wavelength band wherein the refractive index (n) and the absorption coefficient (k) of the above organic dye satisfy n&#x2267;1.90 and 0.03&#x2266;k&#x2266;0.30.

Optical recording medium and novel azaporphyrin compounds

The display filter is constituted by laminating a transparent adhesive layer (C)containing dye, a polymer film (B), a transparent electrically conductive layer (D), a transparent adhesive layer (E), and a functional transparent layer (A)having an anti-reflection property, a hard coat property, a gas barrier property, an antistatic property and an anti-fouling property sequentially in this order, adhered on a display area; on this occasion, the transparent electrically conductive layer (D)is grounded to a ground terminal of the display via an electrodeand an electrically conductive copper foil adhesive tape

Display filter, display apparatus, and method for production of the same

A recordable optical recording medium of this invention capable of good recording and reproduction with a laser at wavelengths of 300 to 500 nm and/or 500 to 700 nm comprises at least one porphycene compounds optionally chelated with a metal in its recording layer.

Optical recording medium and porphycene compound

Dipyrromethene-metal chelate compound and optical recording medium using thereof

Optical recording medium and dipyrromethene metal chelate compound for use therein

A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: ##STR1## wherein R.sub.1 and R.sub.9 are each independently an alkenyl group, an aryl group or a heteroaryl group; R.sub.2 to R.sub.8 are each independently a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl, alkoxy, alkenyl, acyl, alkoxycarbonyl, aralkyl, aryl or heteroaryl group having 20 or less carbon atoms; and M is a transition metal.

Optical recording medium and dipyrromethene metal chelate compound for

A visible light curable resin composition containing a photocurable resin, a photoreaction initiator and a photosensitizer having the formula (1). The composition has a very high sensitivity to a general-purpose visible light laser, so that a high-speed scanning exposure is possible by the laser, and an extremely fine high resolution can be obtained. In addition, the composition can be used for coating or printing under safelight irradiating conditions and under bright circumstantial conditions without any thickening of the composition, and hence the composition can exert excellent noticeable effects in points of safe operativity, operational efficiency and the stability of products. Formula (1) is as follows: ##STR1## wherein rings X.sub.1 and X.sub.2 are each an optionally substituted pyrrole ring; Y is H, CN, optionally substituted alkyl, aralkyl, aryl, heteroaryl or alkenyl group; and Z.sub.1 and Z.sub.2 are halogen, optionally substituted alkyl, alkoxy, alkylthio, aralkyl, aralkyloxy, aryl, aryloxy, arylthio, heteroaryl, heteroaryloxy or heteroarylthio group, provided that at least one of substituents on the pyrrole rings X.sub.1 and X.sub.2, groups Z.sub.1 and Z.sub.2 is the alkoxy, aralkyloxy or aryloxy group.

Photosensitizer, visible light curable resin composition using the same,

An optical recording medium having at least a recording layer and a reflective layer on a substrates, the said recording layer contains a dipyrromethene metal chelate compound obtained from a dipyrromethene compound represented by the general formula (1) and a metal ion: ##STR1## wherein R.sup.1 to R.sup.7 are defined in the specification.

Dipyrromethene metal chelate compounds

An optical recording medium having at least a recording layer and a reflective layer on a substrate. The recording layer contains a dipyrromethene metal chelate compound obtained from a dipyrromethene compound represented by the general formula (1) and a metal ion: ##STR1## wherein R.sup.1 to R.sup.7 are defined in the specification.

Optical recording medium

An optical recording medium comprising a recording layer, a light interference layer, a reflective layer and a protective layer that are laminated on a substrate, characterized in that said recording layer and said light interference layer comprise at least one organic dye, and that a light absorbent and/or a thermal decomposition promoter are/is added to said light interference layer, wherein the optical recording medium has compatibility that allows good recording and/or reproduction by using lasers of different two wavelength ranges and has good recording properties.

A near infrared light-absorbing dye comprising phthalocyanine compounds represented by the following formula (2): ##STR1## wherein in formula (2), M is two hydrogen atoms, a divalent metallic atom, a trivalent monosubstituted metallic atom, a tetravalent disubstituted metallic atom or an oxymetal atom, and L.sup.1, L.sup.2, L.sup.3 and L.sup.4 are each independently formula (a) or (b), ##STR2## in the formula (a) or (b), R.sup.1 and R.sup.3 are each a substituted or unsubstituted alkyl group, and R.sup.2 is a straight chain or branched halogenated alkyl or alkenyl group having 3 to 10 carbon atoms, X is a chlorine, bromine or iodine atom, and m is an integer of 1 to 12, provided that formula (2) represents a mixture of L.sup.1 =L.sup.2 =L.sup.3 =L.sup.4 =formula (a), L.sup.1 =L.sup.2 =L.sup.4 =formula (a) and L.sup.3 =formula (b), L.sup.1 =L.sup.4 =formula (a) and L.sup.2 =L.sup.3 =formula (b), L.sup.1 =L.sup.3 =formula (a) and L.sup.2 =L.sup.4 =formula (b), L.sup.1 =formula (a) and L.sup.2 =L.sup.3 =L.sup.4 =formula (b), and L.sup.1 =L.sup.2 =L.sup.3 =L.sup.4 =formula (b), and an optical recording medium comprising the phthalocyanine mixture.

Phthalocyanine compounds and optical recording media comprising them

Growing community of inventors

Chiba, Japan

Taizo Nishimoto