Lens
Latest screenshot: 2024-07-10
Access to search interface:
open
Last major interface update:
2021-08-14
Owner of search system:
Cambia
Location of system headquarters:
Brisbane, AU
Year of launch:
2017
Type:
Search engine
Help URL:
Twitter:
Description of search system (by system owner)
The Lens serves global patent and scholarly knowledge as a public resource to make science- and technology-enabled problem solving more effective, efficient and inclusive.
Total coverage:
236.41M
Year-over-year growth (2019-2020):
2.86%
Subject coverage:
Multidisciplinary
Retrospective coverage:
1800–2021
Record types:
25
Open Access records:
40.59M / 17.17%
Search functionality and interface
Systematic keyword searching:
extensive
Backward citation searching:
extensive
Forward citation searching:
extensive
Query builder:
Search history:
Match preview:
Sorting options:
11
Query
Latency with short query:
3.1 seconds
Latency with long query:
5.75 seconds
Controlled vocabulary:
Field codes:
76
Full text search:
Search string length (narrow):
500 terms max.
Search string length (wide):
500 terms max.
Language support: Chinese:
Language support: Cyrillic:
Truncation:
Wildcards:
Keyword position irrelevant:
Longer strings, fewer hits:
Automatic query expansion (stemming):
Verbatim queries:
Reproducible queries (time):
Reproducible queries (locations):
Operators
Search operators:
4
Boolean 'OR':
Boolean 'AND':
Boolean 'NOT':
Proximity operator:
Boolean works exact:
Nested search (parentheses):
Citation search / filtering
Record type filters:
25
Results filters:
28
Suggested related records:
Supported by bibliometric tools:
Bibliometrix; CiteSpace; VOSviewer
Backward citation information:
Backward citation score:
82.35%
Forward citation information:
Forward citation score:
71.12%
Retrieval
Number of accessible records:
10000
Bulk select records:
Bulk export records:
50000
Export formats:
5
API:
upon request
Bulk select records' backward citations:
Bulk export backward citations:
50000
Bulk select records' forward citations:
Bulk export forward citations:
50000
