Projection Head and Focus Column

Assembly

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An adjustable optical turret containing a primary projection lens, first surface mirror, and manual or motorized focus mechanism.

Direct parts	6
Total parts	7
Used in	1 assembly
Class	Assembly

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An adjustable optical turret containing a primary projection lens, first surface mirror, and manual or motorized focus mechanism. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Projection Head and Focus Column parts and their functions

6 top-level parts · 7 parts in total · full bill of materials below

Projection Head and Focus Column parts diagram: 1 projection lens, 2 first-surface mirror, 3 lens turret, 4 focus drive, 5 ball bearing, 6 fastener set. 7 parts in 6 top-level items. — Projection Head and Focus Column parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Projection Lens	1×	High-NA projection lens, typically 10–12 inches focal length
2	First-Surface Mirror	1×	First-surface aluminum-coated mirror at 45° angle
3	Lens Turret	1×	Rotating turret for multiple lens magnifications
4	Focus Drive	1×	Screw drive or motor for vertical focus adjustment
5	Ball Bearing	2×	Lens turret rotation and focus rod bearings
6	Fastener Set	1×	Mirror and lens mount bolts

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Build & assembly graph

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Bill of materials for Projection Head and Focus Column

6 top-level lines · 6 rows shown · 7 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Projection Lens	overhead-projector-primary-lens	1×	1	·	part
2	First-Surface Mirror	overhead-projector-mirror	1×	1	·	part
3	Lens Turret	overhead-projector-lens-turret	1×	1	·	part
4	Focus Drive	overhead-projector-focus-mechanism	1×	1	·	part
5	Ball Bearing	ball-bearing	2×	2	·	part
6	Fastener Set	fastener-set	1×	1	·	part

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Where the projection head and focus column is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Office & Retail Equipment 1 Overhead Projector

Used in 1 assembly

Overhead Projector

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks