Rosco Projections

Posts tagged ‘gobos’:

Rosco Image Spot: Compact, Efficient Image Projection — Even Outdoors!

Rosco Image Spot, handheld

For many years, we have enjoyed a great relationship with Rosco’s gobo production specialists deep in the heart of Round Rock, Texas. Thanks in no small part to many years of hard work by Anne Hunter and her crew, Rosco is a world leader in gobos, from simple metal patterns to colored glass effects and all varieties in between. Gobos find use in theater, architectural work, weddings, and other—sometimes unexpected—venues.

Now, leveraging their depth of experience, Rosco has released the Image Spot line of LED gobo projectors. Powerful, yet fitting in the palm of your hand, the Image Spot IP40 and IP65 projectors are perfect for mounting anywhere you need to project an image or message (or just need an compact and efficient spot light), whether that be in a shop, museum, theme park, or other indoor or outdoor setting.

Rosco Image Spot projecting a flame

Image Spot’s 70,000-hour-rated LEDs are energy-efficient and bright, allowing a maximum throw distance of 40 feet (12 meters) using only 45 watts of power. Speaking of power, the projector accepts universal line voltage input, meaning Image Spot units can come along on your world tour without skipping a beat. And the industry-leading 3-year warranty lets you rest assured they’ll stand up to the rigors of touring, too.

Rosco Image Spot Heat Sink and CablesImage Spot comes with an on-board dimming control, maxing out at 3000 lumens @ 5500K. It’s efficient enough that, even running at full blast, there’s no need for a cooling fan… so Image Spot always runs silently. No noise, and no spinning parts to cause those “unexpected tune-ups” down the line!

Rosco Image Spot, wet

The base model, the IP40, is spec’d for indoor use and can be controlled on-device or by DMX512 using standard RJ45/Cat5 cable. For outdoor applications, look to the IP65; weatherproof (as you might guess from its name), it supports DMX512 over exterior-rated Cat5e.

Rosco Image Spot in White, side viewAll Image Spot units measure 7.8×4.8×3.2 inches and weigh just five and a half pounds. They’re available to match most decors in black, white, or silver. Mounting options include canopy, C-clamp, track mount, and pole mount.

Here’s an important piece of advice: because they’re so versatile, Image Spot units are not packaged with a lens. They’ll work fine without a gobo, but won’t do much without a lens. Don’t forget to order one!

Rosco Image Spot Lens AttachmentDepending on your specific needs, you’ll want to pair your Image Spot with a 19, 25, or 30 degree lens to tune your projection to size. The following diagram, along with your trusty measuring tape, should help you work out just what you need to order. If your lighting plan calls for diffusion (perhaps to illuminate artwork or products in a store) add a pack of Rosco’s OPTI-FLECS filters to your shopping cart.

Image Spot photometrics

Rosco Image Spot Gobo and Filter HolderWhen ordering gobos, be sure to order the correct size for Image Spot by using the standard five-digit gobo number and appending “-SPOT” (e.g., “54321-SPOT”). If you’re looking for a Permacolor dichroic filter, use the format “1203-XXXX-SPOT”, substituting the four-digit color number you need. Gobos that use your own custom artwork should use the formats listed in the table below – call us to set up your order, and we will work closely with the crew in Round Rock to make sure it comes out looking great. We’ll admit to being a tiny bit jealous of our central Texas colleagues; we are huge barbecue fans, and they’re surrounded by some of the best barbecue in the world. We may have to ask to visit them one of these days… around lunchtime would be nice!

Item Code Description
2507210ISPOT Image Spot Custom Steel Gobo
260CUSBWOSPO Image Spot Custom B&W Glass Gobo
260CUS1COSPO Image Spot Custom One-Color Glass Gobo
260CUS2COSPO Image Spot Custom Two-Color Glass Gobo
260CUSMCOSPO Image Spot Custom Multi-color Glass Gobo

Dedolight Projection Attachments: How to Use Gobos and Slides to Project Patterns

Dedolight gobos

How to Project Patterns and Images With Dedolight Heads

An excellent way to make your lighting more interesting is to involve gobos. Gobos come in a variety of forms, including silhouette patterns, color modulators, and more. Dedolight manufactures projection attachments for light heads in their Classic, 200, and 400 series that yield incredibly precise images and shadows. Dedolight’s “Imager” attachments overcome several of the problems inherent in those of other manufacturers — Dedolight’s offer:

  • High light efficiency due to perfectly-matched optics
  • Perfect contrast rendition
  • Very low distortion
  • No color fringing (a very typical problem on traditional profiler/ellipsoidal units)
  • No halation (which would impair the shadow edge or affect overall contrast)
  • Interchangeable lenses, from wide angle to telephoto and zoom

Continue Reading…

Dedolight Projection Lenses

Dedolight projection lenses

Dedolight’s “Imager” projection attachments are unusual in that they use interchangeable lenses, similar to those on an SLR camera. By choosing lenses with different focal lengths, you can produce patterns and effects (“gobos”) in a variety of angles and image sizes. These are high quality, heat-tolerant, metal-barreled lenses that can be switched out quickly, according to your needs.

Which lens you use depends on what size image you need. The standard lens, included in the DP1 projection kit, is the 85mm f/2.8. At a distance of 6½ feet (2m), this lens will project a 53″ (135cm) diameter image. On the other hand, if you wanted a much tighter beam, or you needed a greater throw distance, you can use the 185mm f/3.5 lens at that same distance could project a crisp 16″ (40cm) diameter circle.

These lenses are available sized for either the Dedolight DP1 family (compatible with the Dedolight Classic and 200 Series light heads) or the Dedolight DP400 projection attachment (for the 400 Series.)

ModelFocal Length (mm)f-stopNotes

Lenses for Dedolight Classic and 200 Series Imagers
DPL60M 60 f/2.4
DPL85M 85 f/2.8 Standard imager lens
DPL185M 185 f/3.5
DPLZ120M 70-120 zoom f/3.5
DPLZ150M 85-150 zoom f/3.5
DPX Similar to a camera’s macro extension tube; enables extremely compact projections (2″ across) or, with an iris, a point of light as small as 2mm!

ModelFocal Length (mm)f-stopNotes

Lenses for Dedolight 400 Series Imagers
DP400-70 70 f/1.5
DP400-100 100 f/1.6
DP400-150 150 f/2.2
DP400-185 185 f/3.5 Standard projection lens for DP400. Focus scales on both sides of barrel.
DP400-230 230 f/2.0

Click to view a Dedolight photometrics table, showing image sizes, lux values on typical light heads, and more.