Clearvue

Background
Clearvue was a Chicago-based educational company formed sometime in 1954 at the earliest to produce and distribute educational media. Clearvue renamed "Clearvue/eav" and merged with the Society for Visual Education in 2004 to form "Clearvue & SVE" before being folded into Discovery Education in 2007.

1st Logo (Opening Logo) (1990?-1992?)
Logo: On a black background, we see the word "Clearvue" in the Brandish font zooming in and spinning around. It starts out in rainbow colors but then turns a yellow color as it stops spinning. The slogan "Educational Enrichment For All Grade Levels" fades in below in blue.

Technique: The spinning and the color changing.

Music/Sounds: None.

Availability: Rare. Seen on the Fun to Learn video series. This does not appear on the Sterling releases.

2nd Logo (Closing Logo) (1990-1991)
Logo: On a blue background, we see the words "A Clearvue Production" in yellow, wiping in from the center.

Variants:
 * On the episodes "Learning About Responsibility and Sharing" (shown on the Laugh and Learn: Time VHS) and "Survival Safety Signs" (shown on the Laugh and Learn: Shapes VHS), the text is in three lines instead of two. The text also scrolls upward along with the credits rather than wiping.
 * On the episodes, "One, Two and Three", "Four, Five and Six", "Seven, Eight and Nine" and "Ten" (all shown on the Laugh and Learn: 123s VHS), the text is displayed in a fat font displayed on a green sign which Professor Centi (the main character on the aforementioned episodes) holds up. It is revealed via a rain-like wipe effect.
 * On the episodes "Falling Star and the Clever Clowns", "Shapelessville Shapes Up" and "The Circular Circus On Parade" (all shown on the Laugh and Learn: Shapes VHS), the text is in a different font, is in all caps and takes place against a blue square with a white outline, all presented against a maroon/peach psychedelic background. The text also scrolls up along with the credits and zooms out at the end.

Technique: The text wiping in.

Music/Sounds: None.

Availability: Rare. Seen at the end of the Fun to Learn video series.

1st Logo (1991?-1996?)
Logo: On a black background, an orange square, with multiple smaller ones in a concentric style, is seen at the top of the screen. Below it is the text "Presented by" in a sky blue color, and below that is the large white text "CLEARVUE/eav". An address and phone number can be seen in orange at the bottom of the screen.

Technique: None.

Music/Sounds: None.

Availability: Extremely rare.

2nd Logo (1996?-2000?)
Logo: TBA.

Technique: TBA.

Music/Sounds: None, or the video's opening/closing theme.

Availability: Ultra rare. This was known to be seen on The Perfect Paragraph.

3rd Logo (2000?-2004)
TBA.

(2004-2007)
Logo: Same as the SVE & Churchill Media logo, except just before the SVE logo appears, the entire logo freeze-frames and the Clearvue & SVE logo appears in its place.

Technique: Same as the SVE & Churchill Media logo.

Music/Sounds: Same as the SVE & Churchill Media logo.

Availability: Extremely rare. Seen on a print of the Horrible Histories (2001) episode "Groovy Greeks".