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2021109 — Direct lit LED backlighting uses LED lighting across the back of the TV, directly behind the LCD panel, providing a fairly uniform amount of ...

2018910 — A high numerical aperture objective acting as a condenser will increase the signal (light) ... reduce, rather than increase, the magnification ...

Use of coloured lighting in interior spaces has become prevalent in recent years. Considerable importance is ascribed to coloured lighting in interior and lighting design. The effects of colour on the perception of interior spaces have been studied as surface colour; but here, the effects of three different types of chromatic light were investigated. The lighting differed in colour (red, green and white) and perceptions of interior space were assessed. 97 participants (59 women, 38 men; M age = 21.4 yr.) evaluated the experiment room on a questionnaire assessing eight evaluative factors: Pleasantness, Arousal, Aesthetics, Usefulness, Comfort, Spaciousness, Colour, and Lighting quality. Perceptions of the room differed by colour of lighting for some of the evaluative factors, but there was no sex difference in perceptions. Interior spaces may be perceived as equally pleasant under white, green and red lighting. Under white lighting a space is perceived as more useful, spacious, clear, and luminous. Green lighting would make the same effect. Green and white lighting were perceived equally comfortable in an interior space. Chromatic coloured lighting was perceived to be more aesthetic than white lighting. The results support previous findings for some evaluative factors, but differed for others.

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Leading names included Bill Ham, The Joshua Light Show/Joe's Lights/Sensefex located in NY, Tony Martin (SF, NYC), Elias Romero (SF), Mike Leonard (lights for Pink Floyd) (UK),[1] The Heavy Water Light Show,[2] Mark Boyle's Lights/Joan Hill (UK),[3][4] Marc Arno Richardson’s Diogenes Lanternworks (SF, Denver),[5] Lymbic System (Mark Hanau) (UK),[6] Glen McKay's[7] Headlights, The Pig Light Show (NY),[8][9] Lights by Pablo (NY), The Brotherhood of Light (SF),[10] Little Princess 109 (SF),[11] LSD,[12] Ed's Amazing Liquid Light Show,[13] Abercrombe Lights (SF),[14] the Single Wing Turquoise Bird light show (California),[15][16][17] Sector (Alberto Zanotti) and Anna Patti (Italy). The Incredible Liteshow was run by Gary Gand in Chicago. Gand and his wife Joan went on to pioneer electronics in the Rock n Roll industry becoming the first Moog synthesizer dealer in the US and later the first Apple computer dealer in the music industry.

Two groups that are associated with the light shows they worked with above all others are Jefferson Airplane and the Headlights light show in America and Pink Floyd with light artist Mike Leonard in England.[1]

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SUMITA Optical Glass | Specializes in advanced optics, glass science, optical design, and fiber optics. SUMITA's expertise includes advanced optical glass, ...

The style and content of each show were unique but the object of most was to create a tapestry of multimedia live event visual amplification elements that were seamlessly interwoven, in a constant state of flux and above all, reflected the music the show was attempting to depict in emotional visual terms.

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Liquid light shows (or psychedelic light shows)[not verified in body] are a form of light art that surfaced in the early 1960s as accompaniment to electronic music and avant-garde theatre performances. They were later adapted for performances of rock or psychedelic music.

Unpolarized polarized – Most sources of light are described as 'unpolarized' light (i.e. natural light), meaning that they consist of many photons with random ...

20211116 — A collimated beam of light means that the wavefront is plane parallel. The figure below shows a lens and a point source of light at its front ...

VisionAid Magnifier is specifically designed for crafts and hobbies, offering distortion-free crystal clear magnification and a convenient built-in LED light to ...

Liquid light shows surfaced on both sides of the Atlantic around 1966 and were an integral part of the psychedelic music scene well into the seventies. Shows could be as simple as a single operator and two or three modified slideprojectors or overhead projectors and a couple of color wheels or as complex as shows with ten or more operators, 70 plus projectors (including liquid slide, liquid overhead, movie and still image models plus a vast array of highly advanced (for the time) special effects equipment).

Our patented light guide film technology Clad Flat Fiber™ (CFF) can be used to specify LED locations, design electronics, and provide a complete light guide ...

While the shows on both sides of the Atlantic had much in common they differed in two important ways. First, the American shows tended to be larger, with seven operators and over thirty projectors not being exceptional. In contrast, the shows in England and the continent of Europe seldom had more than three operators and ten or so projectors. Second, American shows were generally built around the overhead projector with the liquids in large clock cover glasses. Shows in England and Europe, in contrast, used modified 2" sq. slide projectors which had their dichroic heat filters (one or both) removed and employed two three or even four layers of slide cover glasses with one or two liquids (oil and water based, in the early days) between the glasses. Alternatively different coloured water based dyes were used in each layer, which slowly boiled producing pulsing vapour bubbles when exposed to the heat of the projector lamp with the heat filters removed. Consequently, randomly pulsing and moving blobs of colour were projected on the screen creating the light show. Before the projected layers totally dried out a new slide would be switched in the projector slide holder, meanwhile the old glass would be removed, cleaned and refurbished with new dyes and the projection process would continue. The surface tension of the liquids largely retained the mixtures between the glass slides, but the process was nevertheless very messy indeed and operators had their hands almost permanently stained by the dyes. A popular choice of colored liquids for light shows was Flo-Master ink, a product developed for use in permanent marker pens, also Vitrina which was intended for painting on glass. While these inks were very vivid they also had the problem of staining the operator's hands very deeply.

Nov 6, 2023 — The 3-1/2 order Fresnel lens that beckoned mariners safely into Montauk between 1903 and 1987 has been returned to active service in the lantern room.