{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SQSHBC36GYPHTYUPU5DCQUWKA5","short_pith_number":"pith:SQSHBC36","canonical_record":{"source":{"id":"1506.08956","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2015-06-30T06:39:19Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"b32aacb4cd0716c1e4cb84c45c5ff75750ed80deb08770299e7e8ef66e5c039f","abstract_canon_sha256":"f8f045900676f0a564fe1f1610a692f8a0b71727f299de7cecfda02044615f26"},"schema_version":"1.0"},"canonical_sha256":"9424708b7e361e79e28fa7462852ca0751fd04ceebfd0f4d32f1a00c4495e246","source":{"kind":"arxiv","id":"1506.08956","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.08956","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"arxiv_version","alias_value":"1506.08956v2","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08956","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"pith_short_12","alias_value":"SQSHBC36GYPH","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SQSHBC36GYPHTYUP","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SQSHBC36","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SQSHBC36GYPHTYUPU5DCQUWKA5","target":"record","payload":{"canonical_record":{"source":{"id":"1506.08956","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2015-06-30T06:39:19Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"b32aacb4cd0716c1e4cb84c45c5ff75750ed80deb08770299e7e8ef66e5c039f","abstract_canon_sha256":"f8f045900676f0a564fe1f1610a692f8a0b71727f299de7cecfda02044615f26"},"schema_version":"1.0"},"canonical_sha256":"9424708b7e361e79e28fa7462852ca0751fd04ceebfd0f4d32f1a00c4495e246","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:43.007526Z","signature_b64":"QWUMOKK/JQuAKOdcdrOoQx3L5Q0jcl3GlU8U5Uo4yp99scEC0nczqb18LmF0OvpbcwsbatTDITrAn+xLQOD8DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9424708b7e361e79e28fa7462852ca0751fd04ceebfd0f4d32f1a00c4495e246","last_reissued_at":"2026-05-18T01:36:43.006847Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:43.006847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.08956","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":"2026-05-18T01:36:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wLhkGyGfr9/5d3WpAPoCyjnVubQgPmWxsa1jraahkaF1CdVwvHim7wCGjyh9usiElP6og/HcRpc4xa4PjCMoBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:19:01.823420Z"},"content_sha256":"df5790cc7dc9ec4fc86c1287c765dc8d9d07466b5bdd8d15d566754fc5826d96","schema_version":"1.0","event_id":"sha256:df5790cc7dc9ec4fc86c1287c765dc8d9d07466b5bdd8d15d566754fc5826d96"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SQSHBC36GYPHTYUPU5DCQUWKA5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lens Factory: Automatic Lens Generation Using Off-the-shelf Components","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"cs.GR","authors_text":"Brian Guenter, James Hays, Libin Sun, Neel Joshi, Patrick Therien","submitted_at":"2015-06-30T06:39:19Z","abstract_excerpt":"Custom optics is a necessity for many imaging applications. Unfortunately, custom lens design is costly (thousands to tens of thousands of dollars), time consuming (10-12 weeks typical lead time), and requires specialized optics design expertise. By using only inexpensive, off-the-shelf lens components the Lens Factory automatic design system greatly reduces cost and time. Design, ordering of parts, delivery, and assembly can be completed in a few days, at a cost in the low hundreds of dollars. Lens design constraints, such as focal length and field of view, are specified in terms familiar to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08956","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":""},"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":"2026-05-18T01:36:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jX0UJgVhpvr4j6w3rXpqzmib6eM1QADffdT52T9eR74NtKbk1oMQsqZeJhSzAfQcSa283iw41QKhc8EkmMffCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:19:01.823771Z"},"content_sha256":"b16740f00bb81ebc723f37dafd43361f5fd81c8e7d953689710af79b91daa3ba","schema_version":"1.0","event_id":"sha256:b16740f00bb81ebc723f37dafd43361f5fd81c8e7d953689710af79b91daa3ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SQSHBC36GYPHTYUPU5DCQUWKA5/bundle.json","state_url":"https://pith.science/pith/SQSHBC36GYPHTYUPU5DCQUWKA5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SQSHBC36GYPHTYUPU5DCQUWKA5/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":"2026-05-28T06:19:01Z","links":{"resolver":"https://pith.science/pith/SQSHBC36GYPHTYUPU5DCQUWKA5","bundle":"https://pith.science/pith/SQSHBC36GYPHTYUPU5DCQUWKA5/bundle.json","state":"https://pith.science/pith/SQSHBC36GYPHTYUPU5DCQUWKA5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SQSHBC36GYPHTYUPU5DCQUWKA5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SQSHBC36GYPHTYUPU5DCQUWKA5","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":"f8f045900676f0a564fe1f1610a692f8a0b71727f299de7cecfda02044615f26","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2015-06-30T06:39:19Z","title_canon_sha256":"b32aacb4cd0716c1e4cb84c45c5ff75750ed80deb08770299e7e8ef66e5c039f"},"schema_version":"1.0","source":{"id":"1506.08956","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.08956","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"arxiv_version","alias_value":"1506.08956v2","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08956","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"pith_short_12","alias_value":"SQSHBC36GYPH","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SQSHBC36GYPHTYUP","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SQSHBC36","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:b16740f00bb81ebc723f37dafd43361f5fd81c8e7d953689710af79b91daa3ba","target":"graph","created_at":"2026-05-18T01:36:43Z","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"},"paper":{"abstract_excerpt":"Custom optics is a necessity for many imaging applications. Unfortunately, custom lens design is costly (thousands to tens of thousands of dollars), time consuming (10-12 weeks typical lead time), and requires specialized optics design expertise. By using only inexpensive, off-the-shelf lens components the Lens Factory automatic design system greatly reduces cost and time. Design, ordering of parts, delivery, and assembly can be completed in a few days, at a cost in the low hundreds of dollars. Lens design constraints, such as focal length and field of view, are specified in terms familiar to ","authors_text":"Brian Guenter, James Hays, Libin Sun, Neel Joshi, Patrick Therien","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2015-06-30T06:39:19Z","title":"Lens Factory: Automatic Lens Generation Using Off-the-shelf Components"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08956","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:df5790cc7dc9ec4fc86c1287c765dc8d9d07466b5bdd8d15d566754fc5826d96","target":"record","created_at":"2026-05-18T01:36:43Z","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":"f8f045900676f0a564fe1f1610a692f8a0b71727f299de7cecfda02044615f26","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2015-06-30T06:39:19Z","title_canon_sha256":"b32aacb4cd0716c1e4cb84c45c5ff75750ed80deb08770299e7e8ef66e5c039f"},"schema_version":"1.0","source":{"id":"1506.08956","kind":"arxiv","version":2}},"canonical_sha256":"9424708b7e361e79e28fa7462852ca0751fd04ceebfd0f4d32f1a00c4495e246","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9424708b7e361e79e28fa7462852ca0751fd04ceebfd0f4d32f1a00c4495e246","first_computed_at":"2026-05-18T01:36:43.006847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:43.006847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QWUMOKK/JQuAKOdcdrOoQx3L5Q0jcl3GlU8U5Uo4yp99scEC0nczqb18LmF0OvpbcwsbatTDITrAn+xLQOD8DA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:43.007526Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.08956","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df5790cc7dc9ec4fc86c1287c765dc8d9d07466b5bdd8d15d566754fc5826d96","sha256:b16740f00bb81ebc723f37dafd43361f5fd81c8e7d953689710af79b91daa3ba"],"state_sha256":"bdc2a37d6d95186c400bcd62fe8b7c632388e443a045aaa3ad5508f90d4b5d57"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q/HlCqlzxrtFwBmVy/vOyJBeYJJC8GfBJsVpFv6DejymXNHB8KkCuCe2rczfyA4LxRH/FXssenVPka3WOIWgDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T06:19:01.825751Z","bundle_sha256":"43115aaedfff3319d96d03fc717d75078345dbd68ceb20b4d33245edc3e956b3"}}