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Hello, I'm looking for about 2000 pieces of a S-BSL7 ground disc with the following dimensions: Diameter: 8.000" +.000/-.002" Thickness: 0.275" +/-.004" Chip Spec: <.020". Is this something you could provide? Or do you have a distributor that could make something like this?

Dear OHARA Sales Team, I hope you are doing well. I am writing to inquire whether your S-LAH99W glass can be ordered in the size of 50 × 75 × 1 mm. If S-LAH99W is not available in this size, we would also be interested in other glass materials with a refractive index close to or higher than 1.9 in the visible wavelength range, provided they can be supplied in the form of glass sheets with dimensions of 50 × 75 × 1 mm. We would need approximately 50 pieces in total. Could you please let us know whether this is feasible, and if so, kindly provide a quotation? Thank you very much for your time and assistance. I look forward to your reply. Best regards,

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Hi, I am looking for a round fused silica window, 0.3mm to 0.4mm thick, 28mm diameter. Please let me know if you can provide this.

Hello, I’m with Forsyth Advisors, and we are currently supporting a client in the aerospace and defense industry with sourcing their optical window assemblies. After reviewing your website and capabilities, I believe your team could be a strong fit for this opportunity. The projected annual volume is approximately 3,000 units, and the client is seeking a long-term partner to support the full production volume. If there is interest, I can share a mutual NDA so we can proceed with providing the RFQ package and technical details. I look forward to the opportunity to connect and discuss further.

Hi Ohara, I'm a materials engineer working with the University of Arizona Steward Observatory and would like to confirm some material properties for the E6 Low Expansion glass. I'm compiling the various material specifications and references used by the University of Arizona on its various optical projects. Can you provide any materials datasheets or similar reference documents with the material's mechanical and thermal properties? I am specifically looking for the thermal conductivity and specific heat of E6; I was not able to find this information on your website or published academic literature. Thank you so very much for all your time and consideration. I greatly appreciate your help! Best, Carson Quimby

Found you in photonics buyers guide. We are looking to procure raw ingot material of Germanium to later be manufactured into IR applications. We would like to get pricing and availability of 50kg - 150kg of Ge. Thank you!

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Can someone provide the material properties for various glasses (S-LAL18, S-NBH51, ...) that relate to the depth of a strain field due to a surface stress. I imagine they are the strain tensor coefficients.

I read about the SK-1310 fused silica substrate, which show good transmission in NIR range, therefor I want to ask if the product is available in German and which size and shape of the products I could buy? Thank you in advance for your help. Best regards,

Dear Sirs, I’m looking for Quartz glasklar (JGS2) 180mm mirrors. Is this something you can provide? If yes, I will send you our requirements to get a quote from you. Best regards, Arthur

Hello, I'm a postdoc at the University of Colorado Boulder and got your contacts from a colleague here. I'm urgently in the market for -SCHOTT SF57 -H-ZF52GT -or equivalent glass rods (n=1.86). I am using them to stretch optical pulses at 515-560nm from ~300 fs to a few picoseconds. I need: -65 cm total of glass -preferably in 1" diameter (rectangular glass would be just fine as it doesn't need to be cylindrical) -10-30 cm long segments  -high substrate-surface flatness values to ensure minimal light distortions/scattering from the rod ends -AR coating in the visible is ideal, but if it is much more expensive, no coatings would be just fine.  I would like to know what your company might be able to offer along these lines, if anything, and what pricing and lead times would look like for the options that you have. Thanks for your help! Sincerely, Jasmine Andersen, PhD She/her/hers Research Associate | Optics and Photonics Research Group Electrical, Computer, and Energy Engineering | University of Colorado Boulder

CMC manufactures Head Up Displays. Some of our lenses are currently made from Ohara material S-LAH55V which is apparently no longer available. Our vendor is recommending S-LAH55VS as the replacement. I have reviewed the data sheets that I found online and compared the old to the new, but I am a Mechanical Engineer with no real material experience with optical materials. These two materials look very similar, but I am wondering if Ohara is considering these materials equivalent. If not, generically speaking what effects would changing from the old to the new create? I have to get back to the vendor ASAP so any help in this area would be greatly appreciated. Thank you. Ron Hunter

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We are a leading solar cell manufacturer in India with a total production capacity of 11 GW. As part of a new R&D initiative, we are currently exploring cerium-doped borosilicate glass specifically designed for space applications. Our focus is on materials/glass that offer enhanced radiation shielding properties, excellent optical stability, and durability under extreme environmental conditions.

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Please quote for the following : Sl. No Item Description Quantity 1. Optical Grade Materials 1 Set Technical Specification Optical Grade Materials, SI. No Component / Material Dimension Refractive Index (with tolerance) dn/dT (Equal to or less than) Abbe number (with tolerance) Homogeneity Grade Quantity Diameter (mm) Thickness (mm) 1. Zns 45 20 2.2523 (+0.0005) @3.9 µm +43x10-6/K NA +2x10-5 Optical grade 5 No’s 2. Zns 25 5 2.2523 (+0.0005) @3.9 µm +43x10-6/K NA +2x10-5 Optical grade 20 No’s 3. Silicon 40 20 3.4258 (+0.0005) @3.9 µm 160x10-6/K NA +2x10-5 Optical grade 10 No’s 4. Silicon 40 10 3.4258 (+0.0005) @3.9 µm 160x10-6/K NA +2x10-5 Optical grade 10 No’s 5. Silicon 30 20 3.4258 (+0.0005) @3.9 µm 160x10-6/K NA +2x10-5 Optical grade 10 No’s 6. Silicon 25 15 3.4258 (+0.0005) @3.9 µm 160x10-6/K NA +2x10-5 Optical grade 10 No’s 7. Silicon 25 5 3.4258 (+0.0005) @3.9 µm 160x10-6/K NA +2x10-5 Optical grade 50 No’s 8. NFK-5 25 5 1.4891 (+0.0005) @546nm -1.4x10-6/K 70.23 (0.5%) +2x10-5 Optical grade 5 No’s 9. NFK-5 35 20 1.4891 (+0.0005) @546nm -1.4x10-6/K 70.23 (0.5%) +2x10-5 Optical grade 5 No’s 10. NFK-5 40 15 1.4891 (+0.0005) @546nm -1.4x10-6/K 70.23 (0.5%) +2x10-5 Optical grade 20 No’s 11. CaF2 Size 40x55 10 1.4285 (+0.0005) @1.06µm -10.6x10-6/K NA +2x10-5 Optical grade 5 No’s 12. CaF2 38 10 1.4285 (+0.0005) @1.06µm -10.6x10-6/K NA +2x10-5 Optical grade 5 No’s 13. CaF2 25 5 1.4285 (+0.0005) @1.06µm -10.6x10-6/K NA +2x10-5 Optical grade 30 No’s 14. SSK-5 40 15 1.6615 (+0.0005) @546nm 2.2 x10-6/K 50.59 (0.5%) +2x10-5 Optical grade 5 No’s 15. SSK-5 25 5 1.6615 (+0.0005) @546nm 2.2 x10-6/K 50.59 (0.5%) +2x10-5 Optical grade 30 No’s 16. NLAF-2 30 20 1,74479 (+0.0005) @546nm -0.1 x10-6/K 44.5 (0.5%) +2x10-5 Optical grade 5 No’s 17. NLAF-2 30 15 1,74479 (+0.0005) @546nm -0.1 x10-6/K 44.5 (0.5%) +2x10-5 Optical grade 5 No’s 18. NLAF-2 40 12 1,74479 (+0.0005) @546nm -0.1 x10-6/K 44.5 (0.5%) +2x10-5 Optical grade 5 No’s 19. NLAF-2 25 5 1,74479 (+0.0005) @546nm -0.1

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Dear Sir, We are urgently looking for optical grade germanium blanks and are wondering if OHARA can supply this type of material of non Chineese origin (our project is being delayed because of export licence from China taking more time than usual). If this is from your capabilities, could you contact me by e-mail for detailed specifications ? Thanks in advance for your feedback and help Best regards Guillaume Wetzel CTO

拝啓 ご挨拶申し上げます。 インドのRCMPAポリッシングテクノロジーズのアミット・ガティールと申します。 近年の日中貿易関係の変化に伴い、日本のガラスメーカーにとって、中国以外の安定した酸化セリウムガラス研磨粉の供給源を確保することがますます重要になっています。多くの日本企業が、長期的な信頼性と依存度低減のために、供給源の多様化に積極的に取り組んでいます。 弊社は以前貴社にご連絡を差し上げたことがあり、この度改めてご連絡を差し上げる絶好の機会だと考えております。RCMPAはここ数年、特に日本市場で求められる高純度・高効率研磨材の生産技術と製品性能を大幅に向上させてきました。 RCMPAについて 酸化セリウムガラス研磨粉の製造メーカー 自動車用ガラス、光学用途、ディスプレイガラス、精密研磨向けの特殊グレードを提供 長年にわたり日本への供給実績あり 中国以外の信頼できるサプライチェーンにより、安定性と一貫性を確保 お客様の技術要件に基づいた研磨特性のカスタマイズが可能 最新の研磨粉グレードをご紹介し、お客様の現在および将来のニーズにどのように対応できるかについてご相談させていただければ幸いです。 この件についてさらに詳しくお話しするため、適切な技術／研究開発／調達担当者をご紹介いただけますでしょうか。 よろしくお願いいたします。ご連絡をお待ちしております。 敬具 アミット・ガティール RCMPA Polishing Technologies Pvt. Ltd. メールアドレス：bdminternational@rcmpa.com 携帯電話番号：+91 9167835927

Hello, I am interested in a glass that has low transmission in the visible (about 5% at 450nm, 530nm, and 630nm) and very high transmission in the NIR (as close to 100% as possible at 850nm). From reviewing your catalog, I understand this may need to be a custom material. Would like to chat further.