{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2JNOMBYLPHPBQG7DFHAABKJTJA","short_pith_number":"pith:2JNOMBYL","canonical_record":{"source":{"id":"2006.10747","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-17T20:50:44Z","cross_cats_sorted":[],"title_canon_sha256":"e80a292abc8ceacde273e04eeede25055195ebb647e9428e549219b1f008272d","abstract_canon_sha256":"d97289281577731d8b49c549f8f0f51c894f8e18395115653913eef17c4f6a33"},"schema_version":"1.0"},"canonical_sha256":"d25ae6070b79de181be329c000a933482c06f6b50112f62bd0161325b058f44c","source":{"kind":"arxiv","id":"2006.10747","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.10747","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"2006.10747v2","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.10747","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"2JNOMBYLPHPB","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"2JNOMBYLPHPBQG7D","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"2JNOMBYL","created_at":"2026-07-05T01:14:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2JNOMBYLPHPBQG7DFHAABKJTJA","target":"record","payload":{"canonical_record":{"source":{"id":"2006.10747","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-17T20:50:44Z","cross_cats_sorted":[],"title_canon_sha256":"e80a292abc8ceacde273e04eeede25055195ebb647e9428e549219b1f008272d","abstract_canon_sha256":"d97289281577731d8b49c549f8f0f51c894f8e18395115653913eef17c4f6a33"},"schema_version":"1.0"},"canonical_sha256":"d25ae6070b79de181be329c000a933482c06f6b50112f62bd0161325b058f44c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:14:01.760456Z","signature_b64":"f/09he8++q0weBFc0VrDg6nTq8ZE1rG237MqWH5TeQT8XBZrRhkPORZRtSRHRX7kDeF9ZD1vfBo3y1XffhQzBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d25ae6070b79de181be329c000a933482c06f6b50112f62bd0161325b058f44c","last_reissued_at":"2026-07-05T01:14:01.760045Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:14:01.760045Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.10747","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"51HP0UrnzZpo9gnE2PbsYDDHiH++Fa8dHYL9xopZWFo+pLC7waWLo3djevHoZ2eRFyNtln3B3QeQ4s9LEHPeDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T03:27:29.532167Z"},"content_sha256":"12cd5055367bde2c660d5a4f7f861f3ae9e00beea05aa5fa9cdd72032f5d9701","schema_version":"1.0","event_id":"sha256:12cd5055367bde2c660d5a4f7f861f3ae9e00beea05aa5fa9cdd72032f5d9701"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2JNOMBYLPHPBQG7DFHAABKJTJA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An inverse designed achromatic flat lens operating in the ultraviolet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Berardi Sensale Rodriguez, Sourangsu Banerji","submitted_at":"2020-06-17T20:50:44Z","abstract_excerpt":"We demonstrate an inverse designed achromatic, flat, polarization-insensitive diffractive optic element, i.e., multilevel diffractive lens (MDL), operating across a broadband range of UV light (250 nm - 400 nm) via numerical simulations. The simulated average on-axis focusing efficiency of the MDL is optimized to be as high as ~86%. We also investigate the off-axis focusing characteristics at different incident angles of the incoming UV radiation such that the MDL has a full field of view of 30 degrees. The simulated average off-axis focusing efficiency is ~67%, which is the highest reported t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.10747","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.10747/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ThT3RUYR8ztBsYgR39WvS8Ls1dB9XitOIgpwbgGDo5+2FDjqSpc3h+d5s8161dOcASJnsLh+6Z1IGNx6LpVgAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T03:27:29.532546Z"},"content_sha256":"1bb1cee0201263a3746bf88774905c7790f60853f9c32fccb14d88de7c9036ca","schema_version":"1.0","event_id":"sha256:1bb1cee0201263a3746bf88774905c7790f60853f9c32fccb14d88de7c9036ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2JNOMBYLPHPBQG7DFHAABKJTJA/bundle.json","state_url":"https://pith.science/pith/2JNOMBYLPHPBQG7DFHAABKJTJA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2JNOMBYLPHPBQG7DFHAABKJTJA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-24T03:27:29Z","links":{"resolver":"https://pith.science/pith/2JNOMBYLPHPBQG7DFHAABKJTJA","bundle":"https://pith.science/pith/2JNOMBYLPHPBQG7DFHAABKJTJA/bundle.json","state":"https://pith.science/pith/2JNOMBYLPHPBQG7DFHAABKJTJA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2JNOMBYLPHPBQG7DFHAABKJTJA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2JNOMBYLPHPBQG7DFHAABKJTJA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"d97289281577731d8b49c549f8f0f51c894f8e18395115653913eef17c4f6a33","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-17T20:50:44Z","title_canon_sha256":"e80a292abc8ceacde273e04eeede25055195ebb647e9428e549219b1f008272d"},"schema_version":"1.0","source":{"id":"2006.10747","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.10747","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"2006.10747v2","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.10747","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"2JNOMBYLPHPB","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"2JNOMBYLPHPBQG7D","created_at":"2026-07-05T01:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"2JNOMBYL","created_at":"2026-07-05T01:14:01Z"}],"graph_snapshots":[{"event_id":"sha256:1bb1cee0201263a3746bf88774905c7790f60853f9c32fccb14d88de7c9036ca","target":"graph","created_at":"2026-07-05T01:14:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.10747/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate an inverse designed achromatic, flat, polarization-insensitive diffractive optic element, i.e., multilevel diffractive lens (MDL), operating across a broadband range of UV light (250 nm - 400 nm) via numerical simulations. The simulated average on-axis focusing efficiency of the MDL is optimized to be as high as ~86%. We also investigate the off-axis focusing characteristics at different incident angles of the incoming UV radiation such that the MDL has a full field of view of 30 degrees. The simulated average off-axis focusing efficiency is ~67%, which is the highest reported t","authors_text":"Berardi Sensale Rodriguez, Sourangsu Banerji","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-17T20:50:44Z","title":"An inverse designed achromatic flat lens operating in the ultraviolet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.10747","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:12cd5055367bde2c660d5a4f7f861f3ae9e00beea05aa5fa9cdd72032f5d9701","target":"record","created_at":"2026-07-05T01:14:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"d97289281577731d8b49c549f8f0f51c894f8e18395115653913eef17c4f6a33","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-17T20:50:44Z","title_canon_sha256":"e80a292abc8ceacde273e04eeede25055195ebb647e9428e549219b1f008272d"},"schema_version":"1.0","source":{"id":"2006.10747","kind":"arxiv","version":2}},"canonical_sha256":"d25ae6070b79de181be329c000a933482c06f6b50112f62bd0161325b058f44c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d25ae6070b79de181be329c000a933482c06f6b50112f62bd0161325b058f44c","first_computed_at":"2026-07-05T01:14:01.760045Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:14:01.760045Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f/09he8++q0weBFc0VrDg6nTq8ZE1rG237MqWH5TeQT8XBZrRhkPORZRtSRHRX7kDeF9ZD1vfBo3y1XffhQzBw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:14:01.760456Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.10747","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12cd5055367bde2c660d5a4f7f861f3ae9e00beea05aa5fa9cdd72032f5d9701","sha256:1bb1cee0201263a3746bf88774905c7790f60853f9c32fccb14d88de7c9036ca"],"state_sha256":"4be8e41e50cf5b19d6a91a60a4defee9701f4815950e91292c00b2fc405f9fd9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6sOi9zLTinR9FY1nkbiCBUW7VGv696tOty8fxWuglMxaWXjpzYIry+HsDQKHwyjwhRNmc6jITuQ2PtGzrzcSBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-24T03:27:29.534907Z","bundle_sha256":"950575b7ab1479112d3e8e3f65688a747878af172e806f0fc2564b20dde3822f"}}