食品・飲料・医薬品の包装検査用マシンビジョンレンズ：選定ガイド
規制対象の医薬品包装ラインにおいて、充填レベル、キャップ／シール、製造年月日コード、異物検査用のマシンビジョン用光学系、およびブリスター包装、ラベル、不正開封検知検査用の光学系の選定。
Food, beverage, and pharmaceutical packaging lines test machine vision optics harder than most inspection environments. High conveyor speeds need fast apertures, washdown cycles degrade unsealed lenses, and regulated packaging adds traceability requirements a cosmetic defect check does not have. No single focal length or mount type fits every station.
For most tasks the choice is between Commonlands M12 lenses (compact, inexpensive, suited to multi-camera arrays) and C-mount lenses (adjustable iris, higher resolution ceiling, more tuning margin). A flat packaging surface, a tight mechanical envelope, and a sensor 1/1.8″ or smaller point to M12. Product height variation, a need for iris control, or a sensor 2/3″ and larger point to C-mount. Direct high-pressure washdown on the lens itself points to the Commonlands CIL190 or a sealed housing.
目次
コンベアベルトの欠陥検出
Low distortion matters on belt inspection because distorted frames make consistent bounding-box or contour detection harder across the field. The Commonlands CIL512 (12mm C-mount, approximately −1.8% TV distortion) suits wide-belt coverage on a 1.1″ sensor. The CIL533 (16mm, −0.1% optical/rectilinear distortion, a different metric, not directly comparable to CIL512's TV figure) is the lower-distortion choice for narrower fields at longer working distances.
ラベルおよびバーコードの検証
Working distances for label stations typically fall between 150–400mm, where M12 lenses with good off-axis correction are competitive. The Commonlands CIL052 (5.2mm M12, −0.1% distortion) holds consistent resolution across a 1/1.8″ sensor for full-label capture at short working distances. The CIL042 (4.2mm M12, −0.7% distortion) covers a wider field for larger labels, though the higher distortion limits OCR edge-accuracy near the corners.
液面レベルおよびキャップの検査
Multi-camera setups are common here, one camera per lane or per product variant, so cost matters. The Commonlands CIL083 (8mm M12, $19) is the cost-effective choice: at F/2.8 it gathers enough light for reasonable exposures under standard line illumination, and −0.5% TV distortion is adequate for threshold pass/fail.
For measurement-grade systems where image height maps to a physical volume, the CIL553 (16mm C-mount, −0.09% distortion, 25MP) gives better geometric accuracy and supports higher-resolution sensors for finer increments.
異物および汚染物質の検出
Foreign object detection (glass, bone, metal, insects) often pairs machine vision with NIR illumination, because many contaminants invisible in white light absorb or reflect differently in the 700–1100nm range. A standard lens with an IR-cut filter strongly attenuates that range, so it is unsuitable for NIR work regardless of sensor sensitivity.
For NIR food inspection, specify a lens variant without the IR-cut filter. Commonlands offers CIL083-F2.8-M12ANIR for compact M12 installations and CIL512-F2.8-CMANIR for C-mount setups. Both transmit beyond 700nm for use with NIR illumination sources. See the NIR imaging guide for sensor and illumination pairing.
For visible-light contamination such as surface marks, color patches, or label anomalies, standard lens variants work fine. What matters most is contrast performance at the spatial frequencies of the smallest contaminant you need to flag.
選別と等級分け
Items need to stay fully in frame as they pass, which means a wide-angle lens or a camera set farther back. The Commonlands CIL042 (4.2mm, F/1.9) gives the widest field here and passes more light than F/2.8 alternatives, so it suits fast lanes where motion blur is the main concern. The CIL083 (8mm, F/2.8) works better for texture grading over a smaller inspection area.
医薬品包装の検査
| 点検作業 | 主要な光学制約 | レンズの起点 |
|---|---|---|
| ラベルおよびロットコード／UDIの検証 | 低歪み、最小文字のピクセル密度 | Low-distortion M12 or C-mount, <0.5% distortion |
| ブリスターパックおよびパウチの品揃え状況 | キャビティの高さの変化に伴う被写界深度 | 絞り調整機能付きCマウント |
| シールおよびフラップ／不正開封防止機能の検査 | 折り目や盛り上がった縫い目における被写界深度 | 絞り調整機能付きCマウント |
| カートンのラベル貼付位置／印刷位置 | 全視野にわたって低歪み | Cマウント、2/3インチまたは1.1インチセンサー |
Traceability pushes lot-code and UDI reading toward lower distortion and higher edge resolution than a presence check: every character in the lot code and expiration date has to decode for recall and serialization audits under frameworks like DSCSA. A lens with 2% barrel distortion compresses character strokes near the periphery, lowering OCR confidence where wide-zone label text sits. Under 0.5% distortion usually removes the need for software correction, which adds latency and per-unit calibration.
The CIL052 (5.2mm M12) is a compact option for code-reading and label heads. The CIL522 (12mm C-mount, 0.4% distortion, F/1.4) adds adjustable iris for packaging with depth-of-field pressure.
Blister cavities, formed pouches, and folded flaps sit at different distances from the camera, so at a wide aperture even a few millimeters of height variation can defocus part of the frame. Stopping down extends depth of field, and because machine vision illumination is usually programmable, a two-stop reduction is compensated with more strobe power, not a lens change.
The CIL512 covers up to 1.1″ sensors with a 17.6mm image circle for carton and tray coverage. The CIL544 25mm C-mount handles small-character lot-code work at longer standoff. M12 still fits embedded code readers and compact label heads where the envelope forces a smaller lens and the surface stays flat.
Continuous-web label inspection at line speed needs a line-scan camera and line-scan optics, not area-scan. 360-degree vial inspection needs multiple cameras or a pericentric lens. SWIR imaging through opaque packaging needs a sensor and lens matched to the SWIR band. None are current Commonlands products. For those tasks, a specialist in that modality is the better starting point.
食品・医薬品製造におけるM12とCマウントの比較
M12とCマウントは、同じ設計のバリエーションではなく、異なる光学システムです。M12レンズは剛体構造を採用しており、バレルをねじ込むことで焦点を合わせますが、焦点位置の変化に応じて収差を再調整する内部機構は備えていません。一方、Cマウントレンズは、内部のレンズ群を動かすカム式再焦点調整システムを採用しており、焦点を調整する際に軸外収差を再調整します。この違いは、製品や作動距離を変更する際に重要になります。 機械的な詳細については、マウント比較ガイドの全文をご覧ください。
M12 lenses are smaller, lighter, and cheaper, typically $19–79 in the Commonlands food and packaging range. Across multi-camera arrays of 10–20 cameras on wide conveyors, that cost difference adds up, and M12 integrates cleanly into compact embedded smart cameras.
| 因子 | M12 | Cマウント |
|---|---|---|
| 価格（コモンランズ・シリーズ） | 19～79ドル | 119～349ドル |
| サイズと重量 | コンパクトで軽量 | より大きく、より重い |
| 絞り制御 | 固定絞り | 調整可能なアイリスリング |
| 対応センサーフォーマット | ほとんどのモデルは最大1/1.8インチまで、一部のモデルは最大1/1.6インチまで対応 | 最大1.1インチ以上 |
| ピント調整 | ねじれの回転、剛体 | カメラの再フォーカス、収差の再調整 |
| 耐洗浄性等級 | IP69K対応（CIL190） | 通常、外部の密閉型ハウジングに依存している |
| マルチカメラアレイ | コストの面で好まれる | 解像度や被写界深度の調整が必要な場合に使用します |
For IP69K washdown protection on the lens itself, the CIL190 (19mm M12, F/1.6, IP69K) is the specific option. C-mount installations in direct washdown zones typically rely on an external sealed housing, since the iris mechanism is not rated for high-pressure water.
センサーのペアリングと解像度
Basic pass/fail inspection includes fill level threshold, cap presence, or gross defect detection. For these tasks, a 1/3″ sensor with an M12 lens provides adequate resolution at lower cost per camera head. The CIL083 covers up to 1/1.8″ sensors, giving flexibility if sensor format changes in a later system revision.
Label reading and barcode verification need more pixels across the inspection area. 1/1.8″ sensors at 8–12MP give the pixel density needed for character recognition. The Commonlands CIL052 covers 1/1.8″ at 10MP+, and the CIL042 covers 1/1.7″ at 5–6MP. Stepping up to a 2/3″ sensor means moving to a C-mount lens, because these M12 image circles do not reach an 11mm diagonal.
High-resolution defect detection on large areas benefits from 1″ or larger sensors. Examples include texture grading, print-quality verification, and foreign material on wide-format labels. The CIL512 covers a 1.1″ image circle on sensors like the IMX253 for that field coverage and resolution. Use the DOF calculator to check depth of field across your product height range at the chosen aperture.
食品・医薬品製造における環境への配慮
洗浄耐性（IP67 対 IP69K）
IP67 covers submersion to 1 meter. IP69K covers high-pressure, high-temperature jet spray, the standard used in food plant sanitation. These are different requirements: an IP67 rating makes no claim against an 80°C pressure-washer stream, so do not assume it survives one. Check the rating against the plant's sanitation protocol. Not every station needs IP69K. Many pharmaceutical labeling and carton cells run in dry, climate-controlled rooms where a standard sealed lens is enough.
The CIL190 is IP69K rated for direct spray-down. For lenses without an IP rating, sealed housing with a protective optical window is the standard approach. Specify AR-coated glass for the window to keep transmission losses low. The IP rating guide covers what each rating actually tests and its limits. IP69K on a lens also does not imply IP69K on the camera or mount. Confirm the full system rating, not just the lens.
温度サイクル試験
Lenses moving between cold storage (0–5°C) and warm production areas (20–30°C) can fog optical elements or shift focus as mechanical tolerances tighten. Optical polymers have higher, less predictable thermal expansion than glass, so element materials and how the design is athermalized both affect focus stability. Check the datasheet operating-temperature range rather than assuming a construction type wins. See ruggedized machine vision lenses for the Commonlands products built for thermal cycling.
食品・飲料・医薬品パッケージの検査用コモンランズレンズ
食品・医薬品包装の検査に最適なマシンビジョン用レンズ トップ5
| ランク | レンズ | マウント | EFL | F# | シーリングに関する注意事項 | こんな方に最適 |
|---|---|---|---|---|---|---|
| 1 | CIL052 | M12 | 5.2mm | F/3.4 | IP等級なし。乾燥した場所、または軽く密閉された場所 | ラベルおよびバーコードの検証（歪み率−0.1%） |
| 2 | CIL544 | Cマウント | 25mm | F/1.8 (adjustable iris) | IP等級なし。湿気の多い場所では、密閉型ハウジングを追加してください。 | より長い距離からの日付コードおよびロットコードのOCR |
| 3 | CIL083 | M12 | 8mm | F/2.8 | IP等級なし。標準的な密閉配管での使用 | 充填レベルの合否判定、マルチカメラアレイ |
| 4 | CIL512 | Cマウント | 12mm | F/2.8 | IP等級なし。洗浄対応の密閉型筐体 | 異物およびNIR汚染（NIR対応モデルあり） |
| 5 | CIL042 | M12 | 4.2mm | F/1.9 | IP等級なし；乾式選別用エンクロージャー | 高速選別・格付け（広視野角） |
Where a bare Commonlands lens is the wrong call: large-format C-mount stations that need factory-automation glass rated for continuous line duty are better served by a Fujinon or Kowa FA lens with longer published shock and MTF data. For a direct washdown zone, a full IP69K camera housing protects the whole optical stack, which a per-lens rating cannot.
よくある質問
幅600mmのコンベアベルトには、どの焦点距離が必要ですか？
It depends on working distance and sensor size: EFL = (WD × sensor width) / FOV width. For a 600mm belt at 300mm working distance on a 2/3″ sensor (8.8mm width), EFL = (300 × 8.8) / 600 = 4.4mm. A shorter EFL at fixed FOV and sensor size gives more depth of field, not less. The real tradeoffs at 4.4mm are distortion, keystone effects at the belt edges, and corner performance.
At 500mm the EFL rises to 7.3mm, easing those edge effects. A 1″ sensor (12.8mm) at 400mm gives about 8.5mm. Iterate with the FOV calculator before committing.
マルチカメラ式の食品検査ラインに最適な低価格レンズはどれですか？
The CIL083 at $19 is the practical answer for cost-sensitive multi-camera lines. It covers 1/1.8″ sensors at F/2.8 with −0.5% TV distortion, adequate for pass/fail inspection. For label stations, the CIL052 at $79 gives −0.1% distortion and better off-axis performance. Running 14 fill-level stations on CIL083 and 6 label stations on CIL052 across a 20-camera line saves about $840 without compromising where optics matter.
1本のレンズで、ラベルの読み取りと欠陥検出の両方をカバーすることは可能でしょうか？
Usually not with a single station. Label reading needs the frame filled with the label for maximum pixel density per character, while defect detection may need to cover the whole product including edges. These fields of view conflict, and a lens optimized for one leaves the other underserved.
If a single camera must serve both, choose the field of view for the more demanding task and verify the other still meets acceptance criteria at the resulting resolution.
製薬用包装ラインにおいて、CマウントはM12よりも優れているのでしょうか？
C-mount is the better default for most fixed-station packaging inspection: adjustable iris, larger sensor support, and more tuning margin. A 2/3-inch or 1.1-inch sensor covers a wider packaging zone at the same working distance without sacrificing pixel density.
M12 is right when the inspection head has a hard size constraint, the surface is flat and consistent, and a modest sensor is enough. Many embedded code readers and compact label heads use M12 for exactly this reason.
洗浄環境下でレンズを保護するにはどうすればよいですか？
The direct option is a lens with an IP69K rating: the CIL190 (19mm M12) is rated for the high-pressure, high-temperature jet spray used in food plant sanitation. For lenses without an IP rating, a sealed housing with an AR-coated optical window is the standard approach. See the IP rating guide for what each rating covers and what it does not.
包装ライン用のレンズ選定についてサポートが必要ですか？
食品、飲料、医薬品の包装検査用M12レンズおよびCマウントレンズをご覧ください。
Size focal length with the FOV calculator, or contact Commonlands engineering with your sensor format, working distance, and inspection task.